XCM520AE03DR-G [TOREX]
600mA Synchronous Step-Down DC/DC Converter + Dual LDO Regulator; 600mA同步降压型DC / DC转换器+双路LDO稳压器
| 型号： | XCM520AE03DR-G |
| 厂家： | 
Torex Semiconductor |
| 描述： | 600mA Synchronous Step-Down DC/DC Converter + Dual LDO Regulator |
| 文件： | 总43页 (文件大小：965K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
XCM520Series
ETR2427-002a
600mA Synchronous Step-Down DC/DC Converter + Dual LDO Regulator
■GENERAL DESCRIPTION
The XCM520 series is a multi chip module which comprises of a 600mA driver transistor built-in synchronous step–down
DC/DC converter and a dual CMOS LDO regulator. The device is housed in small USP-12B01 package which is ideally
suited for space conscious applications.
The XCM520 can replace this dual DC/DC to eliminate one inductor and reduce output noise.
The DC/DC converter with a built-in 0.42ΩP-channel MOS and a 0.52ΩN-channel MOS provides a high efficiency, stable
power supply up to 600mA to using only a coil and two ceramic capacitors connected externally.
The highly accurate, low noise, dual CMOS LDO regulator includes a reference voltage source, error amplifiers, driver
transistors, current limiters and phase compensation circuits internally. The series is also fully compatible with low ESR
ceramic capacitors.
This high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response
performance and high PSRR achieved across a broad range of frequencies. The EN function allows the output of each
regulator to be turned off independently, resulting in greatly reduced power consumption.
■FEATURES
■APPLICATIONS
●Mobile phones, Smart phones
●Bluetooth headsets
<DC/DC Convertor Block>
Driver Transistor
: 0.42Ω P-channel MOS Built-in
Switching Transistor : 0.52Ω N-channel MOS Built-in
Input Voltage Range : 2.7V ～ 6.0V
Output Voltage Range : 0.8V ～ 4.0V
●WLAN PC cards
●Portable HDDs, SSDs
High Efficiency
Output Current
: 92% (TYP.) *
: 600mA
●PDAs, PNDs, UMPCs
●MP3 players, Media players
●Portable game consoles
●Cordless phones, Radio communication equipment
Oscillation Frequency : 1.2MHz,3.0MHz (±15%)
Soft-Start : Built-In Soft-Start
Current Limiter Circuit : Constant Current & Latching
Control : Fixed PWM, Auto PWM/PFM
*Performance depends on external components and wiring on PCB wiring.
<Dual LDO Regulator Block>
Maximum Output Current
:
150mA (Limiter 300mA TYP.)
Dropout Voltage
: 100mV @ 100mA
■TYPICAL APPLICATION CIRCUIT
Operating Voltage Range : 1.5V~6.0V
VOUT1
1.8V
Output Voltage Range : 0.8V~5.0V (0.05V increments)
VOUT2
1.2V
CL1
High Accuracy
: ±2% (VOUT>1.5V)
VOUT2
1
2
3
VOUT1 12
±30mV (VOUT≦1.5V)
CL2
1μF
1μF
VSS 11
EN2
Low Power Consumption : 25μA (TYP.)
CIN1
1μF
Stand-by Current
: Less than 0.1μA(TYP.)
VIN1
EN1
EN3
10
9
High Ripple Rejection : 70dB @1kHz
Low Output Noise
VIN2
PGND
Lx
4
5
6
VIN
3.3V
CIN2
4.7μF
Operating Temperature Range : -40℃~+85℃
AGND
VOUT3
8
Low ESR Capacitor
Package
:Ceramic Capacitor Compatible
: USP-12B01
CL3
10μF
7
VOUT3
2.3V
Standard Voltage Combinations
XCM520xx01D
: VOUT1
1.8V
1.8V
1.8V
1.8V
1.0V
0.8V
VOUT2
1.2V
1.3V
1.2V
1.2V
1.2V
1.5V
VOUT3
2.3V
2.3V
2.2V
2.8V
1.8V
1.8V
L
XCM520xx02D
1.5μH
XCM520xx03D
XCM520xx04D
* The dashed lines denote the connection using through-holes
at the backside of the PC board.
* The above circuit uses XCM520AA01 series.
XCM520xx05D
XCM520xx06D
*Other combinations are available as semi-custom products.
* The DC/DC block VOUT3 is connected to the dual LDO regulator
V
IN1 in this connection.
Environmentally Friendly : EU RoHS Compliant, Pb Free
* Also, it is possible to operate two VIN independently.
1/43
XCM520 Series
■PIN CONFIGURATIOIN
PIN No
XCM520
VOUT2
EN2
XC6401
VOUT2
EN2
VIN
XC9235/XC9236
1
2
3
4
5
6
12
11
10
9
VOUT2
VOUT1
VSS
VOUT2
EN2
VOUT1
VSS
1
2
―
―
XC6401
EN2
VIN
VIN
PGND
Lx
3
VIN1
―
4
VIN2
―
VIN
EN1
VIN1
VIN2
PGND
Lx
EN1
5
PGND
Lx
―
PGND
Lx
6
―
EN/MODE
EN3
XC9235/9236
7
VOUT3
AGND
EN3
―
VOUT
AGND
CE
8
AGND
AGND
VOUT3
8
―
9
―
7
VOUT3
10
11
12
EN1
EN1
VSS
VOUT1
―
VSS
―
(TOP VIEW)
VOUT1
―
1
VOUT2
12
11
VOUT1
VSS
NOTE:
* The two heat-sink pads on the back side are electrically isolated in the package.
*1: The pad of the regulator should be VSS level.
*1
2
EN2
*2: The pad of the DC/DC should be VSS level.
EN1
10
3 VIN1
* The DC/DC ground pin (No. 5 and 8) should be connected for use.
* The two pads are recommended to open on the board, but care must be taken for
voltage level of each heat-sink pad when they are electrically connected.
VIN2
VSSD
Lx
EN3/MODE
VSSA
9
8
4
5
*2
7
6
VOUT3
(TOP VIEW)
■PIN ASSIGNMENT
PIN No
XCM520
VOUT2
EN2
FUNCTIONS
Voltage Regulator Output2
1
2
3
4
5
6
7
8
9
Voltage Regulator ON/OFF Control 2
Voltage Regulator Power Input
DC/DC Power Input
VIN1
VIN2
PGND
Lx
DC/DC Power Ground
DC/DC Inductor Pin
VOUT3
AGND
EN3
DC/DC Output Voltage
DC/DC Analog Ground
DC/DC ON/OFF Control
10
EN1
Voltage Regulator ON/OFF Control 1
11
12
VSS
Voltage Regulator Ground
VOUT1
Voltage Regulator Output Voltage 1
2/43
XCM520
Series
■PRODUCT CLASSIFICATION
●Ordering Information
XCM520①②③④⑤⑥-⑦
(*1)
DESIGNATOR
①②
DESCRIPTION
Options
SYMBOL
DESCRIPTION
－
－
See the chart below
See the chart below
③④
Output Voltage combination
Packages
⑤⑥-⑦
DR-G
USP-12B01
Taping Type (*2)
(*1)
The XCM520 series is Halogen and Antimony free as well as being fully RoHS compliant.
The device orientation is fixed in its embossed tape pocket.
(*2)
●DESIGNATOR①②（Combination of XC6401 series and XC9235/XC9236 series）
DESCRIPTION
①②
COMBINATION OF EACH IC
AA
AB
AC
AD
AE
AF
AG
AH
XC6401FF**＋XC9235A**D
XC6401FF**＋XC9235A**C
XC6401FF**＋XC9236A**D
XC6401FF**＋XC9236A**C
XC6401FF**＋XC9235B**D
XC6401FF**＋XC9235B**C
XC6401FF**＋XC9236B**D
XC6401FF**＋XC9236B**C
Fixed PWM, fOSC=3.0MHz
Fixed PWM, fOSC=1.2MHz
Auto PWM/PFM, fOSC=3.0MHz
Auto PWM/PFM, fOSC=1.2MHz
Fixed PWM, fOSC=3.0MHz, VOUT3 CL Discharge
Fixed PWM, fOSC=1.2MHz, VOUT3 CL Discharge
Auto PWM/PFM, fOSC=3.0MHz, VOUT3 CL Discharge
Auto PWM/PFM, fOSC=1.2MHz, VOUT3 CL Discharge
●DESIGNATOR③④（Output Voltage）
③④
VOUT1(VR_1ch)
VOUT2(VR_2ch)
VOUT3(DC/DC)
01
1.8
1.8
1.8
1.2
1.3
1.2
2.3
2.3
2.2
02
03
04
05
06
1.8
1.0
0.8
1.2
1.2
1.5
2.8
1.8
1.8
*This series are semi-custom products. For other combinations of output voltages please consult with your Torex sales contact.
3/43
XCM520 Series
■BLOCK DIAGRAMS
XC9235B/XC9236B
XC9235A/XC9236A
Available with CL Discharge, High Speed Soft-Start
* XC9235 control scheme is a fixed PWM because that the “CE/MODE Control Logic” outputs a low level signal to the “PWM/PFM Selector”.
* XC9236 control scheme is an auto PWM/PFM switching because the “CE/MODE Control Logic” outputs a high level signal to the “PWM/PFM Selector”.
XC6401FF
*Diodes inside the circuit are an ESD protection diode and a parasitic diode.
■MAXIMUM ABSOLUTE RATINGS
PARAMETER
VIN1 Voltage
VOUT Current
VOUT Voltage
EN1,EN2 Voltage
VIN2 Voltage
Lx Voltage
SYMBOL
RATINGS
6.5
700 *2
UNITS
VIN1
V
mA
V
1
IOUT1+IOUT2
*
VOUT1 / VOUT2
VEN1 / VEN2
VIN2
VSS-0.3～VIN1+0.3
VSS-0.3～6.5
-0.3～6.5
V
V
VLX
-0.3～VIN2+0.3≦6.5
-0.3～6.5
V
VOUT3 Voltage
EN3 Voltage
Lx Current
VOUT3
V
VEN3
-0.3～6.5
V
ILX
±1500
mA
USP12-B01
150
USP12-B01 *3
800 (1ch operate)
600 (both 2ch operate)
-40～+85
Power Dissipation
Pd
(PCB mounted)
mW
℃
Topr
Tstg
Operating Temperature Range
Storage Temperature Range
-55～+125
℃
*1. Rating is defined as a total of VR1 and VR2 in the VR bloc.
*2. Pd > { (VIN1 - VOUT1)×IOUT1+(VIN1 - VOUT2)×IOUT2
}
*3. The power dissipation figure shown is PCB mounted. Please refer to page 41 for details. Also, the power dissipation value above is
for each channel.
4/43
XCM520
Series
■ELECTRICAL CHARACTERISTICS
●XCM520AB, AD (DC/DC BLOCK)
VOUT3 = 1.8V, fOSC=1.2MHz, Ta = 25℃
PARAMETER
Output Voltage
SYMBOL
VOUT3
CONDITIONS
MIN.
1.764
2.7
TYP.
MAX. UNITS CIRCUIT
When connected to external components,
VIN2 = VEN3 =5.0V, IOUT3 =30mA
1.800 1.836
V
V
①
①
①
Operating Voltage Range
Maximum Output Current
VIN2
-
-
6.0
-
When connected to external components,
VIN2=VOUT(E)+2.0V, VEN3=1.0V (*8)
IOUT3MAX
600
mA
VEN3=VIN2, VOUT3=0V,
UVLO Voltage
Supply Current
VUVLO
IDD
ISTB
fOSC
1.00
-
1.40
1.78
V
③
②
Voltage which Lx pin holding “L” level (*1, *10)
XCM520AB
XCM520AD
V
IN2=VEN3=5.0V,
22
15
0
50
33
μA
VOUT3 =VOUT3(E)×1.1V
Stand-by Current
V
IN2 = 5.0V, VEN3 = 0V, VOUT3 = VOUT3(E) × 1.1V
-
1.0
μA
②
①
When connected to external components,
VIN2 = VOUT3(E) + 2.0V, VEN3 = 1.0V, IOUT3 = 100mA
Oscillation Frequency
1020
1200
160
1380
200
kHz
When connected to external components,
PFM Switching Current
IPFM
120
mA
①
VIN2 = VOUT3(E) + 2.0V, VEN3 = VIN2 , IOUT3 = 1mA (*11)
V
EN3 = VIN2 = (C-1) IOUT3 = 1mA (*11)
200
300
%
%
%
①
③
③
PFM Duty Limit
Maximum Duty Ratio
Minimum Duty Ratio
DTYLIMIT_PFM
DMAX
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 0.9V
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 1.1V
100
-
-
-
-
0
DMIN
When connected to external components,
VEN3=VIN2=VOUT3(E)+1.2V,IOUT3= 100mA (*7)
VIN2 = VEN3 = 5.0V, VOUT3 = 0V, ILX = 100mA (*3)
Efficiency (*2)
EFFI
RL
-
92
-
%
①
-
-
-
0.35
0.42
0.45
0.52
0.01
0.01
1050
0.55
0.67
0.66
0.77
1.0
Ω
Ω
④
④
－
－
⑤
⑤
⑥
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
Lx SW "H" Leak Current (*5)
Lx SW "L" Leak Current (*5)
Current Limit (*9)
H
H
ｘ
ｘ
RL
VIN2 = VEN3 = 3.6V, VOUT3 = 0V, ILX = 100mA (*3)
VIN2 = VEN3 = 0V (*4)
RL
ｘ
RL
ｘ
Ω
L
L
VIN2 = VEN3 = 3.6V (*4)
-
-
-
Ω
V
V
IN2 = VOUT3 = 5.0V, VEN3 = 0V, LX = 0V
IN2 = VOUT3 = 5.0V, VEN3 = 0V, LX= 5.0V
μA
μA
mA
ILEAKH
ILEAKL
ILIM
1.0
1350
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 0.9V
900
Output Voltage
Temperature
Characteristics
△
VOUT3
/
VOUT3 = 30mA
-40℃ ≦ Topr ≦ 85℃
-
±100
-
ppm/ ℃
①
(VOUT3・△topr)
VOUT3= 0V, Applied voltage to VEN3,
Voltage changes Lx to “H” level (*10)
VOUT3=30V, Applied voltage to VEN3,
Voltage changes Lx to “L” level (*10)
VIN2 = VEN3 = 5.0V, VOUT3 = 0V
CE "H" Level Voltage
CE "L" Level Voltage
VEN3H
0.65
VSS
-
-
6.0
V
V
③
③
VEN3L
0.25
CE "H" Current
CE "L" Current
IEN3H
IEN3L
- 0.1
- 0.1
0.1
0.1
μA
μA
⑤
⑤
VIN2 = 5.0V, VEN3 = 0V, VOUT3 = 0V
-
When connected to external components,
Soft Start Time
tSS
0.5
1.0
1.0
2.5
ms
ms
①
⑦
V
EN3 = 0V → VIN2 , VOUT3 = 1mA
VIN2 VEN3 = 5.0V, VOUT3 = 0.8
Short Lx at 1Ω resistance (*6)
Sweeping VOUT3 VIN2 VEN3 = 5.0V, Short Lx at
=
× VOUT3 (E)
Integral Latch Time
tLAT
-
20.0
,
=
Short Protection
Threshold Voltage
VSHORT
1Ω resistance, VOUT3 voltage which Lx becomes “L” 0.675
level within 1ms
0.900
1.125
V
⑦
Test conditions: Unless otherwise stated, VIN2 = 5.0V, VOUT3 (E) = Nominal voltage
NOTE:
*1: Including hysteresis width of operating voltage.
*2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
*3: ON resistance (Ω)= (VIN2 - Lx pin measurement voltage) / 100mA
*4: Design value
*5: When temperature is high, a current of approximately 10μA (maximum) may leak.
*6: Time until it short-circuits VOUT3 with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse
generating.
*7: VOUT3(E)+1.2V<2.7V, VIN2=2.7V.
*8: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
*9: Current limit denotes the level of detection at peak of coil current.
*10: "H"＝VIN2～VIN2 - 1.2V, "L"＝+ 0.1V ～ - 0.1V
*11: XCM520A/B series exclude IPFM and DTYLIMIT_PFM because those are only for the PFM control’s functions.
*The electrical characteristics above are when the voltage regulator block is in stop.
5/43
XCM520 Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCM520AA/AC (DC/DC BLOCK)
VOUT3 = 1.8V, fOSC= 3.0MHz, Ta=25℃
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX. UNITS CIRCUIT
When connected to external components,
Output Voltage
VOUT3
VIN2
1.764
2.7
1.800 1.836
V
V
①
①
①
V
IN2 = VEN3 = 5.0V, IOUT3 = 30mA
Operating Voltage Range
Maximum Output Current
-
-
6.0
-
When connected to external components,
IN2=VOUT3(E)+2.0V, VEN3=1.0V (*8)
IOUT3MAX
600
mA
V
VEN3 = VIN2 , VOUT3 = 0V ,
VUVLO
IDD
ISTB
fOSC
1.00
-
1.40
1.78
V
②
③
UVLO Voltage
Supply Current
Voltage which Lx pin holding “L” level (*1, *10)
XCM520AA
XCM520AC
46
21
0
65
35
VIN2=VEN3=5.0V,
VOUT3=VOUT3(E)×1.1V
μA
-
1.0
μA
③
①
Stand-by Current
V
IN2 = 5.0V, VEN = 0V, VOUT3 = VOUT3(E) × 1.1V
When connected to external components,
IN2 = VOUT3(E) + 2.0V , VEN3=1.0V, VOUT3 = 100mA
2550
3000
220
3450
270
kHz
Oscillation Frequency
V
When connected to external components,
IPFM
170
mA
①
PFM Switching Current
V
IN2 = VOUT3(E) + 2.0V, VEN3 = VIN2 , IOUT3 = 1mA (*11)
EN3 = VIN2 = (C-1) IOUT3 = 1mA (*11)
V
200
300
%
%
%
②
②
②
PFM Duty Limit
Maximum Duty Ratio
Minimum Duty Ratio
DTYLIMIT_PFM
DMAX
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 0.9V
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 1.1V
When connected to external components,
100
-
-
-
-
0
DMIN
Efficiency (*2)
EFFI
RL
-
86
-
%
①
V
EN3 = VIN2 ＝ VOUT3 (E) + 1.2V, VOUT3 = 100mA (*7)
VIN2 = VEN3 = 5.0V, VOUT3 = 0V, ILX = 100mA (*3)
VIN2 = VEN3 = 3.6V, VOUT3 = 0V, ILX = 100mA (*3)
VIN2 = VEN3 =5.0V (*4)
-
-
-
0.35
0.42
0.45
0.52
0.01
0.01
1050
0.55
0.67
0.66
0.77
1.0
Ω
Ω
④
④
－
－
⑤
⑤
⑥
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
Lx SW "H" Leak Current (*5)
Lx SW "L" Leak Current (*5)
Current Limit (*9)
H
H
ｘ
ｘ
RL
RL
ｘ
RL
ｘ
Ω
L
L
VIN2 = VEN3 = 3.6V (*4)
-
-
-
Ω
V
V
IN2 = VOUT3 = 5.0V, VEN3 = 0V, LX= 0V
IN2 = VOUT3 = 5.0V, VEN3 = 0V, LX= 5.0V
μA
μA
mA
ILEAKH
ILEAKL
ILIM
1.0
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 0.9V
900
1350
Output Voltage
Temperature
Characteristics
△
VOUT3
/
VOUT3 = 30mA
-40℃ ≦ Topr ≦ 85℃
-
±100
-
ppm/ ℃
①
(VOUT3・△topr)
VOUT3 =0V, Applied voltage to VEN3,
Voltage changes Lx to “H” level (*10)
VOUT3 =0V, Applied voltage to VEN3,
Voltage changes Lx to “L” level (*10)
VENH
0.65
VSS
-
-
6.0
V
V
③
③
EN "H" Level Voltage
EN "L" Level Voltage
VEN3L
0.25
IEN3H
IEN3L
VIN2 = VEN3 =5.0V, VOUT3 = 0V
- 0.1
- 0.1
0.1
0.1
μA
μA
⑤
⑤
EN "H" Current
EN "L" Current
VIN2 =5.0V, VEN3 = 0V, VOUT3 = 0V
-
When connected to external components,
Soft Start Time
tSS
0.5
1.0
0.9
2.5
ms
ms
①
⑦
V
EN3 = 0V → VIN2 , VOUT3 = 1mA
VIN2 VEN3 = 5.0V, VOUT3 = 0.8
Short Lx at 1Ω resistance (*6)
Sweeping VOUT3 VIN2 VEN3 = 5.0V, Short Lx at
=
× VOUT3
(E)
Integral Latch Time
tLAT
-
20.0
,
=
Short Protection
Threshold Voltage
VSHORT
0.675
0.900
1.125
V
⑦
1Ω resistance, VOUT3 voltage which Lx becomes “L”
level within 1ms
Test conditions: Unless otherwise stated, VIN2 = 5.0V, VOUT3 (E) = Nominal voltage
NOTE:
*1: Including hysteresis width of operating voltage.
*2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
*3: ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA
*4: Design value
*5: When temperature is high, a current of approximately 10μA (maximum) may leak.
*6: Time until it short-circuits VOUT3 with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse
generating.
*7: VOUT3 (E)+1.2V<2.7V, VIN2=2.7V.
*8: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
*9: Current limit denotes the level of detection at peak of coil current.
*10: "H"＝VIN2～VIN2 - 1.2V, "L"＝+ 0.1V ～ - 0.1V
*11: XCM520AA series exclude IPFM and DTYLIMIT_PFM because those are only for the PFM control’s functions.
*The electrical characteristics above are when the voltage regulator block is in stop.
6/43
XCM520
Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCM520AF,AH (DC/DC BLOCK)
VOUT3=1.8V, fOSC=1.2MHz, Ta=25℃
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX. UNITS CIRCUIT
When connected to external components,
Output Voltage
VOUT3
VIN2
1.764
2.7
1.800 1.836
V
V
①
①
①
V
IN2 = VEN3 = 5.0V, IOUT3 = 30mA
Operating Voltage Range
Maximum Output Current
-
-
6.0
-
When connected to external components,
VIN2 = VOUT3(E)+2.0V, VEN3=1.0V (*8)
IOUT3MAX
600
mA
VEN3 = VIN2, VOUT3 = 0V,
VUVLO
1.00
-
1.40
1.78
V
UVLO Voltage
③
Voltage which Lx pin holding “L” level (*1, *10)
XCM520AF
XCM520AH
22
15
0
50
33
VIN2 =VEN3= 5.0V,
VOUT3= VOUT3(E)×1.1V
IDD
ISTB
fOSC
μA
μA
kHz
Supply Current
Stand-by Current
②
②
①
V
IN2 = 5.0V, VEN3 = 0V, VOUT3 = VOUT3(E) × 1.1V
-
1.0
When connected to external components,
1020
1200
160
1380
200
Oscillation Frequency
VIN2 = VOUT3(E) + 2.0V, VEN3=1.0V, VOUT3=100mA
When connected to external components,
VIN2 = VOUT3(E) + 2.0V, VEN3 = VIN2 , VOUT3 = 1mA (*11)
IPFM
120
mA
PFM Switching Current
①
V
EN3 = VIN2 = (C-1) VOUT3 = 1mA (*11)
200
300
%
%
%
PFM Duty Limit
Maximum Duty Ratio
Minimum Duty Ratio
DTYLIMIT_PFM
DMAX
①
③
③
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 0.9V
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 1.1V
When connected to external components,
100
-
-
-
-
0
DMIN
Efficiency (*2)
①
EFFI
RL
-
92
-
%
V
EN3 = VIN2 = VOUT3 (E) + 1.2V, VOUT3 = 100mA (*7)
VIN2 = VEN3 = 5.0V, VOUT3 = 0V, ILX = 100mA (*3)
VIN2 = VEN3 = 3.6V, VOUT3 = 0V, ILX = 100mA (*3)
VIN2 = VEN3 = 0V (*4)
-
-
-
-
-
0.35
0.42
0.45
0.52
0.01
1050
0.55
0.67
0.66
0.77
1.0
Ω
Ω
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
Lx SW "H" Leak Current (*5)
Current Limit (*9)
④
④
―
―
⑨
⑥
H
H
ｘ
ｘ
RL
RL
ｘ
RL
ｘ
Ω
L
L
VIN2 = VEN3 = 3.6V (*4)
Ω
V
IN2 = VOUT3 = 5.0V, VEN3 = 0V, LX= 0V
μA
mA
ILEAKH
ILIM
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 0.9V
900
1350
Output Voltage
Temperature
Characteristics
△
VOUT3
/
IOUT3 = 30mA
-40℃ ≦ Topr ≦ 85℃
-
±100
-
ppm/ ℃
①
(VOUT3・△topr)
VOUT3 =0V, Applied voltage to VEN3,
Voltage changes Lx to “H” level (*10)
VOUT3 =0V, Applied voltage to VEN3,
Voltage changes Lx to “L” level (*10)
VIN2 = VEN3 =5.0V, VOUT3 = 0V
EN "H" Level Voltage
EN "L" Level Voltage
VENH
0.65
VSS
-
-
6.0
V
V
③
③
VEN3L
0.25
EN "H" Current
EN "L" Current
IEN3H
IEN3L
- 0.1
- 0.1
0.1
0.1
μA
μA
⑤
⑤
VIN2 = 5.0V, VEN3 = 0V, VOUT3 = 0V
-
When connected to external components,
Soft Start Time
tSS
-
0.25
0.4
ms
ms
①
⑦
V
EN3 = 0V → VIN2 , VOUT3 = 1mA
VIN2 VEN3 = 5.0V, VOUT3 = 0.8
Short Lx at 1Ω resistance (*6)
Sweeping VOUT3 VIN2 VEN3 = 5.0V, Short Lx at
=
× VOUT3
(E)
Integral Latch Time
tLAT
1.0
-
20.0
,
=
Short Protection
Threshold Voltage
VSHORT
RDCHG
0.675
200
0.900
300
1.150
450
V
⑦
⑧
1Ω resistance, VOUT3 voltage which Lx becomes “L”
level within 1ms
VIN2 = 5.0V LX = 5.0V VEN3 = 0V VOUT3 = open
CL Discharge
Ω
Test conditions: Unless otherwise stated, VIN2 = 5.0V, VOUT3 (E) = Nominal voltage
NOTE:
*1: Including hysteresis width of operating voltage.
*2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
*3: ON resistance (Ω)= (VIN2 - Lx pin measurement voltage) / 100mA
*4: Design value
*5: When temperature is high, a current of approximately 10μA (maximum) may leak.
*6: Time until it short-circuits VOUT3 with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse
generating.
*7: VOUT3 (E)+1.2V<2.7V, VIN2=2.7V.
*8: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
*9: Current limit denotes the level of detection at peak of coil current.
*10: "H"＝VIN2～VIN2 - 1.2V, "L"＝+ 0.1V ～ - 0.1V
*11: XCM520AF series exclude IPFM and DLIMIT_PFM because those are only for the PFM control’s functions.
*The electrical characteristics above are when the voltage regulator block is in stop.
7/43
XCM520 Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCM520AE,AG (DC/DC BLOCK)
VOUT3=1.8V, fOSC=3.0MHz, Ta=25℃
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX. UNITS CIRCUIT
When connected to external components,
Output Voltage
VOUT3
VIN2
1.764
2.7
1.800 1.836
V
V
①
①
①
V
IN2 = VEN3 = 5.0V, IOUT3 = 30mA
Operating Voltage Range
Maximum Output Current
-
-
6.0
-
When connected to external components,
VIN2=VOUT3(E)+2.0V,VEN3=1.0V (*8)
VOUT3MAX
600
mA
VEN3 = VIN2, VOUT3 = 0V,
VUVLO
1.00
-
1.40
1.78
V
③
UVLO Voltage
Voltage which Lx pin holding “L” level (*1, *10)
VIN2=VEN3=5.0V,
VOUT3 = VOUT3(E)×1.1V
XCM520AE
XCM520AG
46
21
0
65
35
IDD
ISTB
fOSC
μA
μA
kHz
②
②
①
Supply Current
Stand-by Current
V
IN2 = 5.0V, VEN3 = 0V, VOUT3 = VOUT3(E) × 1.1V
-
1.0
When connected to external components,
2550
3000
220
3450
270
Oscillation Frequency
VIN2 = VOUT3(E) + 2.0V, VEN3=1.0V, VOUT3 = 100mA
When connected to external components,
VIN2 = VOUT3(E) + 2.0V, VEN3 = VIN2 , VOUT3 = 1mA (*11)
IPFM
170
mA
PFM Switching Current
①
V
EN3 = VIN2 = (C-1) VOUT3 = 1mA (*11)
-
100
-
200
300
%
%
%
PFM Duty Limit
Maximum Duty Ratio
Minimum Duty Ratio
DTYLIMIT_PFM
DMAX
①
③
③
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 0.9V
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 1.1V
When connected to external components,
-
-
-
0
DMIN
Efficiency (*2)
①
EFFI
RL
-
86
-
%
V
EN3 = VIN2 ＝ VOUT3 (E)+1.2V, VOUT3 =100mA
VIN2 = VEN3 = 5.0V, VOUT3 = 0V, ILX = 100mA (*3)
VIN2 = VEN3 = 3.6V, VOUT3 = 0V, ILX = 100mA (*3)
VIN2 = VEN3 = 0V (*4)
-
-
-
-
-
0.35
0.42
0.45
0.52
0.01
1050
0.55
0.67
0.66
0.77
1.0
Ω
Ω
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
Lx SW "H" Leak Current (*5)
Current Limit (*9)
④
④
―
―
⑨
⑥
H
H
ｘ
ｘ
RL
RL
ｘ
RL
ｘ
Ω
L
L
VIN2 = VEN3 = 3.6V (*4)
Ω
ILEAKH
ILIM
VIN2 = VOUT3 = 5.0V, VEN3 = 0V, LX= 0V
VIN2 = VEN3 = 5.0V, VOUT3 = VOUT3 (E) × 0.9V (*7)
μA
mA
900
1350
Output Voltage
Temperature
Characteristics
△
VOUT3
/
IOUT3 = 30mA
-40℃ ≦ Topr ≦ 85℃
-
±100
-
ppm/ ℃
①
(VOUT3・△topr)
VOUT3 = 0V, Applied voltage to VEN3,
Voltage changes Lx to “H” level (*10)
VOUT3 = 0V, Applied voltage to VEN3,
Voltage changes Lx to “L” level (*10)
VIN2 = VEN3 = 5.0V, VOUT3 = 0V
EN "H" Level Voltage
EN "L" Level Voltage
VEN3H
0.65
VSS
-
-
6.0
V
V
③
③
VEN3L
0.25
EN "H" Current
EN "L" Current
IEN3H
IENL
- 0.1
- 0.1
0.1
0.1
μA
μA
⑤
⑤
VIN2 = 5.0V, VEN3 = 0V, VOUT3 = 0V
-
When connected to external components,
Soft Start Time
tSS
-
0.32
0.5
ms
ms
①
⑦
V
EN3 = 0V → VIN2 , VOUT3 =1mA
VIN2 VEN3 = 5.0V, VOUT3 = 0.8
Short Lx at 1Ω resistance (*6)
Sweeping VOUT3 VIN2 VEN3 = 5.0V, Short Lx at
=
× VOUT3
(E)
Integral Latch Time
tLAT
1.0
-
20.0
,
=
Short Protection
Threshold Voltage
VSHORT
RDCHG
0.675
200
0.900
300
1.150
450
V
⑦
⑧
1Ω resistance, VOUT3 voltage which Lx becomes “L”
level within 1ms
VIN2 = 5.0V LX = 5.0V VEN3 = 0V VOUT3 = open
CL Discharge
Ω
Test conditions: Unless otherwise stated, VIN2 = 5.0V, VOUT3 (E) = Nominal voltage
NOTE:
*1: Including hysteresis width of operating voltage.
*2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
*3: ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA
*4: Design value
*5: When temperature is high, a current of approximately 10μA (maximum) may leak.
*6: Time until it short-circuits VOUT3 with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse
generating.
*7: VOUT3 (E)+1.2V<2.7V, VIN2=2.7V.
*8: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
*9: Current limit denotes the level of detection at peak of coil current.
*10: "H"＝VIN2～VIN2 - 1.2V, "L"＝+ 0.1V ～ - 0.1V
*11: XCM520AE series exclude IPFM and DTYLIMIT_PFM because those are only for the PFM control’s functions.
*The electrical characteristics above are when the voltage regulator block is in stop.
8/43
XCM520
Series
■ELECTRICAL CHARACTERISTICS (Continued)
●PFM Switching Current (IPFM) by Oscillation Frequency and Output Voltage
1.2MHz
SETTING VOLTAGE
OUT3(E) ≦ 1.2Ｖ
(mA)
MAX.
MIN.
140
130
120
TYP.
180
170
160
V
240
220
200
1.2V ＜ VOUT3(E) ≦1.75Ｖ
1.8V ≦ VOUT3(E)
3.0MHz
(mA)
SETTING VOLTAGE
MIN.
190
180
170
TYP.
260
240
220
MAX.
350
V
OUT3(E) ≦ 1.2Ｖ
1.2V ＜ VOUT3(E) ≦1.75Ｖ
1.8V ≦ VOUT3(E)
300
270
●Measuring PFM Duty Limit, VIN2 Voltage
fOSC
1.2MHz
3.0MHz
(C-1)
VOUT3(E)+0.5V
VOUT3(E)+1.0V
Minimum operating voltage is 2.7V
ex.) Although when VOUT3(E) = 1.2V, fOSC= 1.2MHz, (C-1) = 1.7V the (C-1) becomes 2.7V because of the minimum operating voltage 2.7V.
●Soft-Start Time Chart (XCM520AE/XCM520AF/XCM520AG/XCM520AH Series Only)
PRODUCT SERIES
fOSC
OUTPUT VOLTAGE
MIN.
TYP.
MAX.
UNITS
1200kHz
1200kHz
0.8≦VOUT3(E)<1.5
1.5≦VOUT3(E)<1.8
-
-
0.25
0.32
0.4
0.5
XCM520AF
1200kHz
1200kHz
1200kHz
1200kHz
3000kHz
3000kHz
1.8≦VOUT3(E)<2.5
2.5≦VOUT3(E)<4.0
0.8≦VOUT3(E)<2.5
2.5≦VOUT3(E)<4.0
0.8≦VOUT3(E)<1.8
1.8≦VOUT3(E)<4.0
-
-
-
-
-
-
0.25
0.32
0.25
0.32
0.25
0.32
0.4
0.5
0.4
0.5
0.4
0.5
ms
XCM520AH
XCM520AE/AG
9/43
XCM520 Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCM520 Series VR Block (VR1/VR2: EN_ Active High, without Pull-down resistors)
Ta=25℃
PARAMETER
Output Voltage
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS CIRCUIT
V
OUT(T)≧1.5V
OUT(T)<1.5V
X0.98 (*3)
-0.03 (*3)
150
X1.02 (*3)
+0.03 (*3)
(*2)
(*4)
VOUT(E)
IOUT=30mA
VOUT (T)
V
⑩
V
IOUTMAX
△VOUT
Vdif1
Vdif2
ISS
VIN1=VOUT (T) + 1.0V
1mA≦IOUT≦100mA
-
-
mA
mV
mV
mV
μA
μA
⑩
⑩
Maximum Output Current
Load Regulation
-
15
60
IOUT=30mA
E-1
E-2
25
Dropout Voltage (*5)
⑩
IOUT=100mA
Supply Current
VIN1=VEN=VOUT (T) + 1.0V, IOUT=0mA
VIN1=VOUT (T) + 1.0V, VEN=VSS
VOUT(T)+1.0V≦VIN1≦6.0V
VEN=VIN1, IOUT=30mA
-
-
45
⑫
⑪
Stand-by Current
ISTB
0.01
0.10
△VOUT
/
Input Regulation (*8)
-
1.5
-
0.01
-
0.20
6.0
-
% / V
V
⑩
-
(△VIN1 ・ VOUT
)
Input Voltage
VIN1
△VOUT
/
IOUT=30mA
Output Voltage
ppm/℃
⑩
100
Temperature Characteristics
(△Topr ･VOUT
)
-40℃≦Topr≦85℃
V
IN1=[VOUT(T)+1.0]VDC+0.5Vp-pAC
OUT=30mA, f=1kHz
Ripple Rejection (*9)
PSRR
-
70
-
dB
⑬
I
Limit Current
ILIM
ISHORT
VENH
VENL
IENH
VIN1=VOUT (T) + 1.0V, VEN=VIN1
VIN1=VOUT (T) + 1.0V, VEN=VIN1
-
-
300
-
mA
mA
V
⑩
⑩
⑭
⑭
⑭
⑭
Short Current
30
-
-
EN "H" Level Voltage
EN "L" Level Voltage
EN "H" Level Current
EN "L" Level Current
1.30
-
6
-
0.25
0.10
0.10
V
VIN1=VEN=VOUT (T) + 1.0V
-0.10
-0.10
-
μA
μA
IENL
VIN1= VOUT (T) + 1.0V, VEN=VSS
-
NOTE:
*1 : Unless otherwise stated, VIN1=VOUT(T)+1.0V
*2 : VOUT(E) : Effective output voltage
(I.e. the output voltage when "VOUT(T)＋1.0V" is provided at the VIN pin while maintaining a certain IOUT value).
*3 : Please see the Voltage Chart for each voltage of VOUT(E)
.
If VOUT (T)≦1.45V, MIN VOUT (T) - 30mV, MAX VOUT (T) + 30mV
*4 : VOUT(T) : Nominal output voltage
(*6)
*5 : Vdif={VINa(*7)-VOUTa
}
*6 : VOUT1=A voltage equal to 98% of the output voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input.
*7 : VIN1=The input voltage when VOUT1 appears as input voltage is gradually decreased.
*8 : When VOUT(T)≧4.5V, 5.5V≦VIN1≦6.0V
*9 : When VOUT(T)≧4.8V, VIN1=5.75VDC+0.5Vp-pAC
*The electrical characteristics above are when the DC/DC block is in stop.
10/43
XCM520
Series
■OUTPUT VOLTAGE CHART
●Voltage Chart 1
E-1
DROPOUT VOLTAGE 1 (mV)
Vdif1
E-2
NOMINAL OUTPUT
OUTPUT VOLTAGE (V)
VOLTAGE
DROPOUT VOLTAGE 2 (mV)
Vdif2
(V)
VOUT
VOUT(T)
MIN.
MAX.
TYP.
MAX.
TYP.
MAX.
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2.70
2.75
2.80
2.85
2.90
2.95
0.770
0.820
0.870
0.920
0.970
1.020
1.070
1.120
1.170
1.220
1.270
1.320
1.370
1.420
1.470
1.519
1.568
1.617
1.666
1.715
1.764
1.813
1.862
1.911
1.960
2.009
2.058
2.107
2.156
2.205
2.254
2.303
2.352
2.401
2.450
2.499
2.548
2.597
2.646
2.695
2.744
2.793
2.842
2.891
0.830
0.880
0.930
0.980
1.030
1.080
1.130
1.180
1.230
1.280
1.330
1.380
1.430
1.480
1.530
1.581
1.632
1.683
1.734
1.785
1.836
1.887
1.938
1.989
2.040
2.091
2.142
2.193
2.244
2.295
2.346
2.397
2.448
2.499
2.550
2.601
2.652
2.703
2.754
2.805
2.856
2.907
2.958
3.009
300
700
400
800
200
100
80
600
500
400
300
200
100
350
270
240
200
180
165
700
600
500
400
300
250
65
60
55
50
45
75
65
150
140
200
180
40
60
120
170
35
55
110
160
11/43
XCM520 Series
■DROPOUT VOLTAGE CHART (Continued)
●Voltage Chart 2
E-1
E-2
NOMINAL OUTPUT
OUTPUT VOLTAGE (V)
DROPOUT VOLTAGE 1 (mV)
Vdif1
DROPOUT VOLTAGE 2 (mV)
VOLTAGE
(V)
VOUT
Vdif2
VOUT(T)
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.55
3.60
3.65
3.70
3.75
3.80
3.85
3.90
3.95
4.00
4.05
4.10
4.15
4.20
4.25
4.30
4.35
4.40
4.45
4.50
4.55
4.60
4.65
4.70
4.75
4.80
4.85
4.90
4.95
5.00
MIN.
2.940
2.989
3.038
3.087
3.136
3.185
3.234
3.283
3.332
3.381
3.430
3.479
3.528
3.577
3.626
3.675
3.724
3.773
3.822
3.871
3.920
3.969
4.018
4.067
4.116
4.165
4.214
4.263
4.312
4.361
4.410
4.459
4.508
4.557
4.606
4.655
4.704
4.753
4.802
4.851
4.900
MAX.
3.060
3.111
3.162
3.213
3.264
3.315
3.366
3.417
3.468
3.519
3.570
3.621
3.672
3.723
3.774
3.825
3.876
3.927
3.978
4.029
4.080
4.131
4.182
4.233
4.284
4.335
4.386
4.437
4.488
4.539
4.590
4.641
4.692
4.743
4.794
4.845
4.896
4.947
4.998
5.049
5.100
TYP.
MAX.
TYP.
MAX.
30
45
100
150
12/43
XCM520
Series
■TYPICAL APPLICATION CIRCUIT
1
2
VOUT1
12
11
10
VOUT2
EN2
CL2
CL1
VSS
EN1
CIN1
3
VIN1
4
EN3/MODE
AGND
9
8
7
VIN2
VIN
CIN2
PGND
5
6
CL3
Lx
VOUT3
L
● DC/DC BLOCK fOSC=1.2MHz
● DC/DC BLOCK fOSC=3.0MHz
CIN1
CL1
CL2
L
:
:
:
:
:
:
1μF
1μF
1μF
(Ceramic)
(Ceramic)
(Ceramic)
CIN1
CL1
CL2
L
:
:
:
:
:
:
1μF
1μF
1μF
(Ceramic)
(Ceramic)
(Ceramic)
4.7μH (NR4018 TAIIYO YUDEN)
1.5μH (NR3015 TAIIYO YUDEN)
CIN2
CL2
4.7μF
10μF
(Ceramic)
(Ceramic)
CIN2
CL2
4.7μF
10μF
(Ceramic)
(Ceramic)
■OPERATIONAL EXPLANATION
●DC/DC BLOCK
The DC/DC block of the XCM520 series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM
comparator, phase compensation circuit, output voltage adjustment resistors, P-channel MOSFET driver transistor, N-channel
MOSFET switching transistor for the synchronous switch, current limiter circuit, UVLO circuit and others. (See the block
diagram above.)
By using the error amplifier, the voltage of the internal voltage reference source is compared with the feedback voltage from the
VOUT3 pin through split resistors, R1 and R2. Phase compensation is performed on the resulting error amplifier output, to input a
signal to the PWM comparator to determine the turn-on time during PWM operation. The PWM comparator compares, in terms
of voltage level, the signal from the error amplifier with the ramp wave from the ramp wave circuit, and delivers the resulting
output to the buffer driver circuit to cause the Lx pin to output a switching duty cycle. This process is continuously performed to
ensure stable output voltage.
The current feedback circuit monitors the P-channel MOS driver transistor current for each switching operation, and modulates
the error amplifier output signal to provide multiple feedback signals. This enables a stable feedback loop even when a low
ESR capacitor such as a ceramic capacitor is used ensuring stable output voltage.
<Reference Voltage Source>
The reference voltage source provides the reference voltage to ensure stable output voltage of the DC/DC converter.
<Ramp Wave Circuit>
The ramp wave circuit determines switching frequency. The frequency is fixed internally and can be selected from 1.2MHz or
3.0MHz. Clock pulses generated in this circuit are used to produce ramp waveforms needed for PWM operation, and to
synchronize all the internal circuits.
<Error Amplifier>
The error amplifier is designed to monitor output voltage. The amplifier compares the reference voltage with the feedback
voltage divided by the internal split resistors, R1 and R2. When a voltage is lower than the reference voltage is fed back, the
output voltage of the error amplifier increases. The gain and frequency characteristics of the error amplifier output are fixed
internally to deliver an optimized signal to the mixer.
13/43
XCM520 Series
■OPERATIONAL EXPLANATION (Continued)
<Current Limit>
The current limiter circuit of the XCM520 series monitors the current flowing through the P-channel MOS driver transistor
connected to the Lx pin, and features a combination of the current limit mode and the operation suspension mode.
① When the driver current is greater than a specific level, the current limit function operates to turn off the pulses from the Lx pin
at any given timing.
② When the P-channel MOS driver transistor is turned off, the limiter circuit is then released from the current limit detection state.
③ At the next pulse, the P-channel MOS driver transistor is turned on. However, the P-channel MOS driver transistor is
immediately turned off in the case of an over current state.
④ When the over current state is eliminated, the IC resumes its normal operation.
The IC waits for the over current state to end by repeating the steps ① through ③. If an over current state continues for a few
milliseconds and the above three steps are repeatedly performed, the IC performs the function of latching the OFF state of the
P-channel MOS driver transistor, and goes into operation suspension mode. Once the IC is in suspension mode, operations
can be resumed by either turning the IC off via the EN3 pin, or by restoring power to the VIN2 pin. The suspension mode does
not mean a complete shutdown, but a state in which pulse output is suspended; therefore, the internal circuitry remains in
operation. The current limit of the XCM520 series can be set at 1050mA at typical. Besides, care must be taken when laying
out the PC Board, in order to prevent miss-operation of the current limit mode. Depending on the state of the PC Board, latch
time may become longer and latch operation may not work. In order to avoid the effect of noise, the board should be laid out so
that input capacitors are placed as close to the IC as possible.
Limit < a few milliseconds
Limit＞a few milliseconds
Current Limit LEVEL
ILx
VOUT3
Lx
0mA
VSS
VEN3
VIN1
Restart
<Short-Circuit Protection>
The short-circuit protection circuit monitors the internal R1 and R2 divider voltage from the VOUT3 pin. In case where output
is accidentally shorted to the ground and when the FB point voltage decreases less than half of the reference voltage (Vref)
and a current more than the ILIM flows to the driver transistor, the short-circuit protection quickly operates to turn off and to
latch the driver transistor. In latch state, the operation can be resumed by either turning the IC off and on via the EN3 pin, or
by restoring power supply to the VIN2 pin.
When sharp load transient happens, a voltage drop at the VOUT3 pin is propagated to FB point through CFB, as a result, short
circuit protection may operate in the voltage higher than 1/2 VOUT3 voltage.
<UVLO Circuit>
When the VIN2 pin voltage becomes 1.4V or lower, the P-channel MOS driver transistor is forced OFF to prevent false pulse
output caused by unstable operation of the internal circuitry. When the VIN2 pin voltage becomes 1.8V or higher, switching
operation takes place. By releasing the UVLO function, the IC performs the soft start function to initiate output startup operation.
The soft start function operates even when the VIN pin voltage falls momentarily below the UVLO operating voltage. The UVLO
circuit does not cause a complete shutdown of the IC, but causes pulse output to be suspended; therefore, the internal circuitry
remains in operation.
14/43
XCM520
Series
■OPERATIONAL EXPLANATION (Continued)
<PFM Switch Current>
In the PFM control operation, until coil current reaches to a specified level (IPFM), the IC keeps the P- channel MOSFET on. In
this case, on-time (tON) that the P-channel MOSFET is kept on can be given by the following formula.
t
ON= L×IPFM (VIN2－VOUT3
)
→IPFM①
<PFM Duty Limit>
In the PFM control operation, the PFM duty limit (DLIMT_PFM) is set to 200% (TYP.). Therefore, under the condition that the duty
increases (e.g. the condition that the step-down ratio is small), it’s possible for P-channel MOS driver transistor to be turned off
even when coil current doesn’t reach to IPFM.
→IPFM②
PFM Duty Limit
Ton
fOSC
Lx
Lx
IPFM
0mA
IPFM
0mA
ILx
ILx
IPFM
①
IPFM
②
< CL High Speed Discharge >
XCM520AE/ XCM5AF/XCM520AG/XCM520AH series can quickly discharge the electric charge at the output capacitor (CL)
when a low signal to the CE pin which enables a whole IC circuit put into OFF state, is inputted via the N-channel transistor
located between the LX pin and the VSS pin. When the IC is disabled, electric charge at the output capacitor (CL) is quickly
discharged so that it may avoid application malfunction. Discharge time of the output capacitor (CL) is set by the CL
auto-discharge resistance (R) and the output capacitor (CL). By setting time constant of a CL auto-discharge resistance value [R]
and an output capacitor value (CL) as
τ(τ=C x R), discharge time of the output voltage after discharge via the N-channel transistor is calculated by the following
formula.
V =VOUT3(E)×e -t /τor t = τLn (VOUT3(E) / V)
Where;
V : Output voltage after discharge
VOUT3(E) : Output voltage
t: Discharge time
τ: C×R
100
90
80
70
60
50
40
30
20
10
0
CL=10uF
CL=20uF
CL=50uF
C= Capacitance of Output capacitor (CL)
R= CL auto-discharge resistance
0
10
20
30
40
50
60
70
80
90 100
15/43
XCM520 Series
■OPERATIONAL EXPLANATION (Continued)
●Voltage Regulator BLOCK
The voltage divided by resistors R1 and R2 is compared with the internal reference voltage by the error amplifier. The
P-channel MOSFETs, which are connected to the VOUT pin, are then driven by the subsequent output signal. The
output voltages at the VOUT pin is controlled and stabilized by a system of negative feedback. The current limit circuit
and short protect circuit operate in relation to the level of output current. Further, the IC's internal circuitry can be
shutdown via the EN pin's signal.
< Low ESR Capacitors >
With the XCM520 series, a stable output voltage is achievable even if used with low ESR capacitors as a phase
compensation circuit is built-in. In order to ensure the effectiveness of the phase compensation, we suggest that output
capacitor (CL) is connected as close as possible to the output pins (VOUT) and the VSS pin. Please use an output capacitor
with a capacitance value of at least 1μF. Also, please connect an input capacitor (CIN1) of 1μF between the VIN1 pin and the
VSS pin in order to ensure a stable power input.
< Current Limiter, Short-Circuit Protection >
The XCM520 series includes a combination of a fixed current limiter circuit and a fold-back circuit which aid the operations of
the current limiter and circuit protection. When the load current reaches the current limit level, the fixed current limiter circuit
operates and output voltage drops. As a result of this drop in output voltage, the fold-back circuit start to operate, output
voltage drops further and output current decreases. When the output pin is shorted, a current of about 30mA flows.
< EN Pins >
The IC's internal circuitry can be shutdown via the signal from the EN pin with the XCM520 series. In shutdown state, output
at the VOUT pin will be pulled down to the VSS level via R1 and R2. The operational logic of the IC's EN pin is selectable
(please refer to the selection guide). Note that as the standard type's regulator 1 and 2 are both ' High Active/No Pull Down',
operations will become unstable with the EN pin open. Although the EN pin is equal to an inverter input with CMOS
hysteresis, with either the pull-up or pull-down options, the EN pin input current will increase when the IC is in operation. We
suggest that you use this IC with either a VIN1 voltage or a VSS voltage input at the EN pin. If this IC is used with the correct
specifications for the EN pin, the operational logic is fixed and the IC will operate normally. However, supply current may
increase as a result of through current in the IC's internal circuitry.
16/43
XCM520
Series
■NOTES ON USE
<DC/DC BLOCK>
1. The XCM520 series is designed for use with ceramic output capacitors. If, however, the potential difference is too large
between the input voltage and the output voltage, a ceramic capacitor may fail to absorb the resulting high switching energy
and oscillation could occur on the output. If the input-output potential difference is large, connect an electrolytic capacitor in
parallel to compensate for insufficient capacitance.
2. Spike noise and ripple voltage arise in a switching regulator as with a DC/DC converter. These are greatly influenced by
external component selection, such as the coil inductance, capacitance values, and board layout of external components.
Once the design has been completed, verification with actual components should be done.
3. As a result of input-output voltage and load conditions, oscillation frequency goes to 1/2, 1/3, and continues, then a ripple
may increase.
4. When input-output voltage differential is large and light load conditions, a small duty cycle comes out. After that, 0%duty
cycle may continue in several periods.
5. When input-output voltage differential is small and heavy load conditions, a large duty cycle comes out and may
continues100% duty cycle in several periods.
6. With the IC, the peak current of the coil is controlled by the current limit circuit. Since the peak current increases when
dropout voltage or load current is high, current limit starts operation, and this can lead to instability. When peak current
becomes high, please adjust the coil inductance value and fully check the circuit operation. In addition, please calculate
the peak current according to the following formula:
Ipk = (VIN2-VOUT3)× OnDuty /(2×L×fOSC) + IOUT
L: Coil Inductance Value
fOSC: Oscillation Frequency
7. When the peak current which exceeds limit current flows within the specified time, the built-in P-channel MOS driver
transistor turns off. During the time until it detects limit current and before the built-in P-channel MOS driver transistor can
be turned off, the current for limit current flows; therefore, care must be taken when selecting the rating for the external
components such as a coil.
8. Depending on the state of the PC Board, latch time may become longer and latch operation may not work. In order to avoid
the effect of noise, the board should be laid out so that input capacitors are placed as close to the IC as possible.
9. Use of the IC at voltages below the recommended voltage range may lead to instability.
10. This IC should be used within the stated absolute maximum ratings in order to prevent damage to the device.
11. When the IC is used in high temperature, output voltage may increase up to input voltage level at no load because of the
leak current of the P-channel MOS driver transistor.
12. The current limit is set to 1350mA (MAX.) at typical. However, the current of 1350mA or more may flow.
In case that the current limit functions while the VOUT3 pin is shorted to the GND pin, when P-channel MOS driver transistor is
ON, the potential difference for input voltage will occur at both ends of a coil. For this, the time rate of coil current becomes
large. By contrast, when N-channel MOS driver transistor is ON, there is almost no potential difference at both ends of the
coil since the VOUT3 pin is shorted to the GND pin. Consequently, the time rate of coil current becomes quite small.
According to the repetition of this operation, and the delay time of the circuit, coil current will be converged on a certain
current value, exceeding the amount of current, which is supposed to be limited originally. Even in this case, however, after
the over current state continues for several ms, the circuit will be latched. A coil should be used within the stated absolute
maximum rating in order to prevent damage to the device.
①Current flows into P-channel MOS driver transistor to reach the current limit (ILIM).
②The current of ILIM or more flows since the delay time of the circuit occurs during from the detection of the current limit to
OFF of P-channel MOS driver transistor.
③Because of no potential difference at both ends of the coil, the time rate of coil current becomes quite small.
④Lx oscillates very narrow pulses by the current limit for several ms.
⑤The circuit is latched, stopping its operation.
# ms
17/43
XCM520 Series
■NOTE ON USE (Continued)
13. In order to stabilize VIN2 voltage level and oscillation frequency, we recommend that a by-pass capacitor (CIN) be connected
as close as possible to the VIN2 and VSS pins.
14. High step-down ratio and very light load may lead an intermittent oscillation.
15. During PWM / PFM automatic switching mode, operating may become unstable at transition to continuous mode.
Please verify with actual design.
VOUT3=3.3V, fOSC=1.2MHz
VIN2=3.7V, IOUT3=100mA
<External Components>
L : 4.7μF(NR4018)
CH1:Lx 5V/div
CIN2 : 4.7μF(Ceramic)
CL3 : 10μF(Ceramic)
CH2:VOUT3 20mV/div
16. Please note the inductance value of the coil. The IC may enter unstable operation if the combination of ambient temperature,
output voltage, oscillation frequency, and L value are not adequate.
In the operation range close to the maximum duty cycle, The IC may happen to enter unstable output voltage operation even
if using the L values listed below.
VOUT3=3.3V, fOSC=1.2MHz
●The Range of L Value
V
IN2=4.0V,IOUT3=180mA
fOSC
VOUT
L Value
3.0MHz
0.8V＜VOUT3≦4.0V
1.0μH～2.2μH
3.3μH～6.8μH
4.7μH～6.8μH
CH1:Lx 2.0V/div
<External Components>
V
OUT3≦2.5V
L : 1.5μF(NR3015)
1.2MHz
2.5V＜VOUT3
CIN2 : 4.7μF(Ceramic)
*When
a coil less value of 4.7 μ H is used at
CH2:VOUT3 20mV/div
CL3 : 10μF(Ceramic)
fOSC=1.2MHz or when a coil less value of 1.5μH is used
at fOSC=3.0MHz, peak coil current more easily reach the
current limit ILMI. In this case, it may happen that the IC
can not provide 600mA output current.
18/43
XCM520
Series
■NOTE ON USE (Continued)
●Note on use of pattern layouts
1. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be
exceeded.
2. The capacitor (CIN) should be connected as close as possible to the VIN and VSS pins.
When wiring impedance is high, noise propagation by output current or phase discrepancy occur which results in
unstable operating. In this case, please reinforce VIN and VSS rails. If the operation is still unstable, please increase
input capacitance CIN.
3. With comparison to the separate product usage, the two chips are placed in adjacent in the package so heat generation
Is influenced each other. Please evaluate and verify in the actual design.
●Instructions of pattern layouts
1. In order to stabilize VIN1・VIN2・VOUT1・VOUT2・VOUT3, we recommend that a by-pass capacitor (CIN1・CIN2・CL1・CL2・
CL3) be connected as close as possible to the VIN1・VIN2・VOUT1・VOUT2・VOUT3 and VSS pin.
2. Please mount each external component as close to the IC as possible.
3. Wire external components as close to the IC as possible and use thick, short connecting traces to reduce the circuit
impedance.
4.
VSS（AGND・PGND・VSS）ground wiring is recommended to get large area. The IC may goes into unstable operation
as a result of VSS voltage level fluctuation during the switching.
5. Heat is generated because of the output current (IOUT) and ON resistance of driver transistors.
●Reference Pattern Layout
L
XC
5
M 20
EX
TO
VOUT
3
V
. 1
er . O
USP 12B
ND
AG
L x
CL 3
1
ODE
M
EN3
IC
C
L 2
GND
EN1
VOUT 1
VOUT2
EN2
95
#
Back
Front
Ceramic Capacitor
Inductor
19/43
XCM520 Series
■TEST CIRCUITS
<Circuit No.1 >
<Circuit No.2 >
VIN2
EN3
Lx
A
VOUT3
1μF
AGND
PGND
* External Componen
L
:
1.5μH (N3015) 3.0MHz
4.7μH (NR4018) 1.2MHz
: 4.7μF (ceramic)
EN1
VIN1
EN2
VSS
CIN2
CL3
VOUT1
VOUT2
:
10μF (ceramic)
<Circuit No.3 >
<Circuit No.4 >
Wave Form Measure Point
VIN2
Lx
VIN2
EN3
Lx
EN3
VOUT3
VOUT3
Rpulldown
200Ω
1μF
100mA
1μF
V
AGND
PGND
AGND
PGND
EN1
VIN1
EN2
EN1
VIN1
EN2
VSS
VSS
VOUT1
VOUT2
VOUT1
VOUT2
<Circuit No.6 >
<Circuit No.5 >
ILEAKH
Wave Form Measure Point
VIN2
EN3
Lx
VIN2
EN3
Lx
A
IENH
ILEAKL
VOUT3
VOUT3
PGND
A
IENL
1μF
ILIM
V
1μF
AGND
PGND
AGND
EN1
VIN1
EN2
EN1
VIN1
EN2
VSS
VSS
VOUT1
VOUT2
VOUT1
VOUT2
<Circuit No.8 >
<Circuit No.7 >
ILx
Wave Form Measure Point
ILAT
VIN2
EN3
Lx
VIN2
EN3
Lx
A
VOUT3
VOUT3
1μF
1μF
Rpulldown
1Ω
AGND
PGND
AGND
PGND
EN1
VIN1
EN2
EN1
VIN1
EN2
VSS
VSS
VOUT1
VOUT2
VOUT1
VOUT2
<Circuit No.9 >
20/43
XCM520
Series
■TEST CIRCUITS (Continued)
<Circuit No11 >
EN1/EN2
<Circuit No10 >
EN1/EN2
Active High：EN = VIN1
Active Low：EN = VSS
Active High：EN = VSS
Active Low：EN = VIN1
VIN2
EN3
Lx
VOUT3
PGND
AGND
VOUT1
VIN1
EN1
EN2
A
VOUT2
VSS
CIN1, CL1, CL2 : 1μF (ceramic)
<Circuit No12 >
<Circuit No13 >
VIN1=[VOUT(T)+1.0]VDC+0.5Vp-pAC
VIN2
EN3
Lx
VOUT3
VIN2
EN3
Lx
VOUT3
PGND
AGND
PGND
AGND
IOUT=30mA
VOUT1
VOUT1
A
IOUT1
VIN1
EN1
EN2
VIN1
EN1
EN2
A
V
CL1
VOUT2
VOUT2
A
IOUT=30mA
VSS
V
VSS
IOUT2
V
CL2
CL1, CL2 : 1μF (ceramic)
EN1/EN2
EN1/EN2
VR1 PSRR
Active High (pull-down, without resistance)
VR1 Supply Current, EN1=ON, EN2=OFF
VR2 Supply Current, EN1= OFF, EN2=ON
Active High: ON=VIN1, OFF=VSS
EN1=ON, EN2=OFF
VR2 PSRR
EN1=OFF, EN2=ON
Active High: ON=VIN1, OFF=VSS
Active Low: ON=VSS, OFF=VIN1
Active Low: ON=VSS, OFF=VIN1
<Circuit No14 >
CIN1 : 1μF (ceramic)
EN1/EN2
EN1”H” Level Current
EN1=VIN1 Level
EN2”H” Level Current
EN2=VIN1 Level
EN1”L” Level Current
EN1= VSS
EN2”L” Level Current
EN2=VSS
* The EN which is not measured is in operation sop mode.
Active High: VSS
Active Low: measuring VIN1 Level
21/43
XCM520 Series
■TYPICAL PERFORMANCE CHARACTERISTICS
●DC/DC Block
(1) Efficiency vs. Output Current
VOUT3=1.8V, fOSC=1.2MHz
VOUT3=1.8V, fOSC=3.0MHz
L=4.7μH(NR4018), CIN2=4.7μF, CL3=10μF
L=1.5μH(NR3015), CIN2=4.7μF, CL3=10μF
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
PWM/PFM Automatic Switching Control
PWM/PFM A utomatic Sw itc hing
VIN2= 4.2V
3.6V
PWM Control
VIN2= 4.2V
VIN2= 4.2V
3.6V
PWM Control
VIN2= 4.2V
3.6V
3.6V
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current:IOUT3(mA)
Output Current:IOUT3(mA)
(2) Output Voltage vs. Output Current
VOUT3=1.8V, fOSC=1.2MHz
VOUT3=1.8V, fOSC=3.0MHz
L=4.7μH(NR4018), CIN2=4.7μF, CL3=10μF
L=1.5μH(NR3015), CIN2=4.7μF, CL3=10μF
2.1
2
2.1
2
PWM/PFM Automatic Switching Control
1.9
1.8
1.7
1.6
1.5
1.9
1.8
1.7
1.6
1.5
PWM/PFM Automatic Switching Control
VIN2 4.2V,3.6V
＝
VIN2 4.2V,3.6V
＝
PWM Control
PWM Control
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current:IOUT3(mA)
Output Current:IOUT3(mA)
(3) Ripple Voltage vs. Output Current
VOUT3=1.8V, fOSC=1.2MHz
VOUT3=1.8V, fOSC=3.0MHz
L=4.7μH(NR4018), CIN2=4.7μF, CL3=10μF
L=1.5μH(NR3015), CIN2=4.7μF, CL3=10μF
100
80
60
40
20
0
100
80
60
40
20
0
PWM/PFM Automatic
Switching Control
PWM Control
PWM Control
PWM/PFM Automatic
VIN2 4.2V,3.6V
＝
VIN2 4.2V,3.6V
＝
Switching Control
VIN2 4.2V
＝
3.6V
VIN2 4.2V
＝
3.6V
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current:IOUT3(mA)
Output Current:IOUT 3(mA)
22/43
XCM520
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●DCDC Block (Continued)
(4) Oscillation Frequency vs. Ambient Temperature
VOUT3=1.8V, fOSC=1.2MHz
VOUT3=1.8V, fOSC=3.0MHz
L=4.7μH(NR4018), CIN2=4.7μF, CL3=10μF
L=1.5μH(NR3015), CIN2=4.7μF, CL3=10μF
1.5
1.4
1.3
1.2
1.1
1
3.5
3.4
3.3
3.2
3.1
3
VIN=3.6V
VIN2=3.6V
2.9
2.8
2.7
2.6
2.5
0.9
0.8
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
100
100
Ambient Temperature : Ta (
)
℃
Ambient Temperature : Ta (
)
℃
(5) Supply Current vs. Ambient Temperature
VOUT3=1.8V, fOSC=1.2MHz
VOUT3=1.8V, fOSC=3.0MHz
40
35
30
40
35
30
25
20
15
10
5
VIN2=6.0V
VIN2=4.0V
VIN 2=6.0V
VIN 2=4.0V
25
20
15
10
5
0
0
-50
-25
0
25
50
75
-50
-25
0
25
50
75
100
Ambient Temperature : Ta (
)
Ambient Temperature : Ta (
)
℃
℃
(6) Output Voltage vs. Ambient Temperature
VOUT3=1.8V, fOSC=3.0MHz
(7) UVLO Voltage vs. Ambient Temperature
VOUT3=1.8V, fOSC=3.0MHz
2.1
1.8
VIN 2=3.6V
EN3=VIN2
1.5
1.2
0.9
0.6
0.3
0
2
1.9
1.8
1.7
1.6
1.5
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
Ambient Temperature : Ta (
)
℃
Ambient Temperature : Ta (
)
℃
23/43
XCM520 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●DCDC Block (Continued)
(8) EN "H" Voltage vs. Ambient Temperature
VOUT3=1.8V, fOSC=3.0MHz
(9) EN" L" Voltage vs. Ambient Temperature
VOUT3=1.8V, fOSC=3.0MHz
1.0
0.9
0.8
1.0
0.9
0.8
VIN2=5.0V
0.7
VIN2=5.0V
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.6
0.5
0.4
0.3
VIN2=3.6V
VIN2=3.6V
0.2
0.1
0.0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ambient Temperature: Ta (
)
℃
Ambient Temperature: Ta (
)
℃
(10) Soft Start Time vs. Ambient Temperature
VOUT3=1.8V, fOSC=3.0MHz
VOUT3=1.8V, fOSC=3.0MHz
L=4.7μH(NR4018), CIN2=4.7μF, CL3=10μF
L=1.5μH(NR3015), CIN2=4.7μF, CL3=10μF
5
4
3
2
1
0
5
4
3
2
1
0
VIN2=3.6V
VIN2=3.6V
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
)
100
Ambient Temperature : Ta (
)
℃
Ambient Temperature : Ta (
℃
(11) "Pch / Nch" Driver on Resistance vs. Input Voltage
OUT3=1.8V, fOSC=3.0MHz
V
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Nch on Resistance
Pch on Resistance
0
1
2
3
4
5
6
Input Voltage: VIN2 (V)
24/43
XCM520
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●DCDC Block (Continued)
(12) XCM520AE/ XCM520AF/ XCM520AG/ XCM520AH Series, Rise Wave Form
VOUT3=1.2V, fOSC=1.2MHz
VOUT3=3.3V, fOSC=3.0MHz
L=1.5μH (NR3015), CIN2=4.7μF, CL3=10μF
L=4.7μH (NR4018), CIN2=4.7μF, CL3=10μF
VIN2=5.0V
VIN2=5.0V
IOUT3=1.0mA
IOUT3=1.0mA
V
OUT3：0.5V/div
V
OUT3：1.0V/div
EN3：0.0V⇒1.0V
100μs/div
EN3：0.0V⇒1.0V
100μs/div
(13) XCM520AE/ XCM520AF/ XCM520AG/ XCM520AH Series, Soft-Start Time vs. Ambient Temperature
VOUT3=1.2V, fOSC=1.2MHz
VOUT3=3.3V, fOSC=3.0MHz
L=4.7μH(NR4018), CIN2=4.7μF, CL3=10μF
L=1.5μH(NR3015), CIN2=4.7μF, CL3=10μF
500
400
300
200
100
0
500
400
300
200
100
0
VIN2=5.0V
IOUT 3=1.0mA
VIN2=5.0V
IOUT 3=1.0mA
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ambient Temperature: Ta (
)
℃
Ambient Temperature: Ta (
)
℃
(14) XCM520AE/ XCM520AF/ XCM520AG/ XCM520AH Series, CL Discharge Resistance vs. Ambient Temperature
VOUT3=3.3V, fOSC=3.0MHz
600
500
400
300
200
100
VIN2=6.0V
VIN2=4.0V
-50
-25
0
25
50
75
100
Ambient Temperature: Ta (
)
℃
25/43
XCM520 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●DCDC Block (Continued)
(15) Load Transient Response
V
OUT3=1.2V, fOSC=1.2MHz(PWM/PFM Automatic Switching Control)
L=4.7μH(NR4018), CIN2=4.7μF(ceramic), CL3=10μF(ceramic), Topr=25℃
IN2=3.6V, EN3=VIN2
V
IOUT3 =1mA → 100mA
IOUT3=1mA → 300mA
1ch: IOUT3
1ch: IOUT3
2ch
2ch
VOUT3: 50mV/div
VOUT3: 50mV/div
50μs/div
50μs/div
IOUT3 =100mA → 1mA
IOUT3 =300mA → 1mA
1ch: IOUT3
1ch: IOUT3
2ch
2ch
VOUT3: 50mV/div
VOUT3: 50mV/div
200μs/div
200μs/div
26/43
XCM520
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●DCDC Block (Continued)
(15) Load Transient Response (Continued)
VOUT3=1.2V, fOSC=1.2MHz(PWM Control)
L=4.7μH(NR4018), CIN2=4.7μF(ceramic), CL3=10μF(ceramic), Topr=25℃
VIN2=3.6V, EN3=VIN2
IOUT3=1mA → 100mA
IOUT3=1mA → 300mA
1ch: IOUT3
1ch: IOUT3
2ch
2ch
VOUT 3: 50mV/div
VOUT3: 50mV/div
50μs/div
50μs/div
IOUT3=100mA → 1mA
IOUT3=300mA → 1mA
1ch: IOUT3
1ch: IOUT3
2ch
2ch
VOUT3: 50mV/div
VOUT3: 50mV/div
200μs/div
200μs/div
27/43
XCM520 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●DCDC Block (Continued)
(15) Load Transient Response (Continued)
V
OUT3=1.8V, fOSC=3.0MHz (PWM/PFM Automatic Switching Control)
L=1.5μH(NR3015), CIN2=4.7μF(ceramic), CL3=10μF(ceramic),Topr=25℃
IN2=3.6V, EN=VIN2
V
IOUT3=1mA → 100mA
IOUT3=1mA → 300mA
1ch: IOUT3
1ch: IOUT3
2ch
2ch
VOUT3: 50mV/div
VOUT3: 50mV/div
50μs/div
50μs/div
IOUT3=100mA → 1mA
IOUT3=300mA → 1mA
1ch: IOUT3
1ch: IOUT3
2ch
2ch
VOUT3: 50mV/div
VOUT3: 50mV/div
200μs/div
200μs/div
28/43
XCM520
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●DCDC Block (Continued)
(15) Load Transient Response (Continued)
V
OUT3=1.8V, fOSC=3.0MHz(PWM Control)
L=1.5μH(NR3015), CIN2=4.7μF(ceramic), CL3=10μF(ceramic), Topr=25℃
IN2=3.6V, EN1=VIN2
V
IOUT3=1mA → 100mA
IOUT3=1mA → 300mA
1ch: IOUT3
1ch: IOUT3
2ch
2ch
VOUT3: 50mV/div
VOUT3: 50mV/div
50μs/div
50μs/div
IOUT3=100mA → 1mA
IOUT3=300mA → 1mA
1ch: IOUT3
1ch: IOUT3
2ch
2ch
VOUT3: 50mV/div
VOUT3: 50mV/div
200μs/div
200μs/div
29/43
XCM520 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block
(1) Output Voltage vs. Output Current
VOUT=0.8V
VOUT=0.8V
VIN1=1.8V, CIN1=1μF(ceramic), CL=1μF(ceramic)
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
1.0
0.8
0.6
0.4
0.2
0.0
1.0
0.8
0.6
0.4
0.2
0.0
VIN1= 6.0V
= 3.8V
ꢀꢀꢀ = 1.8V
= 1.5V
Topr= 85℃
= 25℃
ꢀꢀꢀ =-40℃
0
50
100 150 200 250 300 350
0
50
100 150 200 250 300 350
Output Current: IOT(mA)
U
Output Current: IOUT (mA)
VOUT=2.85V
VOUT=2.85V
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
VIN1=3.85V, CIN1=1μF(ceramic), CL=1μF(ceramic)
4.0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
VIN1 = 6.0V
= 4.0V
=3.15V
Topr= 85℃
= 25℃
ꢀꢀꢀ =-40℃
0
50
100 150 200 250 300 350
0
50
100 150 200 250 300 350
Output Current: I
(mA)
OUT
Output Current: IOT(mA)
U
VOUT=3.0V
VOUT=3.0V
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
VIN1=4.0V, CIN1=1μF(ceramic), CL=1μF(ceramic)
4.0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
VIN1= 6.0V
= 4.0V
ꢀꢀꢀ = 3.3V
Topr= 85℃
= 25℃
ꢀꢀꢀ =-40℃
0
50
100 150 200 250 300 350
Output Current: IOUT (mA)
0
50
100 150 200 250 300 350
Output Current: I (mA)
OUT
30/43
XCM520
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block (Continued)
(1) Output Voltage vs. Output Current (Continued)
VOUT=5.0V
VOUT=5.0V
VIN1=4.0V, CIN1=1μF(ceramic), CL=1μF(ceramic)
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
6.0
5.0
4.0
3.0
2.0
1.0
0.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
VIN1= 6.0V
= 5.3V
Topr= 85℃
= 25℃
ꢀꢀꢀ =-40℃
0
50
100 150 200 250 300 350
0
50
100 150 200 250 300 350
Output Current: IOUT (mA)
Output Current: IOUT (mA)
(2) Output Voltage vs. Input Voltage
VOUT=0.8V
VOUT=0.8V
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
1.2
1.1
1.0
0.9
0.8
0.90
0.85
0.80
0.75
0.70
0.65
IOUT
=
0mA
IOUT
=
0mA
0.7
0.6
0.5
= 30mA
=100mA
= 30mA
=100mA
0.5
1.0
1.5
2.0
2.5
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Input Voltage: VIN1 (V)
Input Voltage: V (V)
IN1
VOUT=2.85V
VOUT=2.85V
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
2.95
2.90
2.85
2.80
2.75
2.70
3.05
2.85
2.65
2.45
2.25
2.05
IOUT
=
0mA
IOUT
=
0mA
= 30mA
=100mA
= 30mA
=100mA
2.35
2.85
3.35
3.0
3.5
4.0
In
4.5
ta
5.0
VIN1(V
)
5.5
6.0
Input Voltage: VIN1 (V)
p
u
t
V
o
l
g
e
:
31/43
XCM520 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block (Continued)
(2) Output Voltage vs. Input Voltage (Continued)
VOUT=3.0V
VOUT=3.0V
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
3.2
3.0
2.8
2.6
2.4
2.2
3.10
3.05
3.00
2.95
2.90
2.85
IOUT
=
0mA
IOUT
=
0mA
= 30mA
=100mA
= 30mA
=100mA
2.5
3.0
ta
3.5
3.5
4.0
4.5
5.0
5.5
6.0
In
p
u
t
V
o
l
g
e
:VIN1 (V)
Input Voltage: VIN1 (V)
VOUT=5.0V
VOUT=5.0V
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
Ta=25℃, CIN1=1μF(ceramic), CL=1μF(ceramic)
5.2
5.0
4.8
4.6
4.4
4.2
5.10
5.05
5.00
4.95
4.90
4.85
IOUT
=
0mA
IOUT
=
0mA
= 30mA
=100mA
= 30mA
=100mA
4.5
5.0
Input Voltage: VIN1 (V)
5.5
5.5
6.0
Input Voltage: VIN1 (V)
(3) Dropout Voltage vs. Output Current
VOUT=0.8V
VOUT=2.85V
CIN1=1μF(ceramic), CL=1μF(ceramic)
CIN1=1μF(ceramic), CL=1μF(ceramic)
1.0
0.8
0.6
0.4
0.2
0.0
0.5
0.4
0.3
0.2
0.1
0.0
Topr = 85℃
ꢀꢀꢀ = 25℃
ꢀꢀꢀ = -40℃
Topr = 85℃
ꢀꢀꢀ = 25℃
ꢀꢀꢀ = -40℃
0
50
100
150
200
0
50
100
150
200
Output Current: IOUT (mA)
Output Current: IOUT (mA)
32/43
XCM520
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block (Continued)
(3) Dropout Voltage vs. Output Current (Continued)
VOUT=5.0V
VOUT=3.0V
CIN1=1μF(ceramic), CL=1μF(ceramic)
CIN1=1μF(ceramic), CL=1μF(ceramic)
0.5
0.4
0.3
0.2
0.1
0.0
0.5
0.4
0.3
0.2
0.1
0.0
Topr＝-40℃
ꢀꢀꢀ ＝25℃
ꢀꢀꢀ ＝85℃
Topr＝-40℃
ꢀꢀꢀ ＝25℃
ꢀꢀꢀ ＝85℃
0
50
100
150
200
0
50
100
150
200
Output Current: IOUT (mA)
Output Current: IUT(mA)
(4) Supply Current vs. Input Voltage
VOUT=0.8V
VOUT=2.85V
100
80
100
80
60
40
20
0
Topr= 85℃
ꢀꢀꢀ ꢀꢀ = 25℃
ꢀꢀꢀ =-40℃
Topr= 85℃
ꢀꢀꢀ ꢀꢀ = 25℃
ꢀꢀꢀ =-40℃
60
40
20
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage: VIN1 (V)
Input Voltage: VIN1 (V)
VOUT=5.0V
VOUT=3.0V
100
80
60
40
20
0
100
80
60
40
20
0
Topr= 85℃
ꢀꢀꢀ ꢀꢀ = 25℃
ꢀꢀꢀ =-40℃
Topr= 85℃
ꢀꢀꢀ ꢀꢀ = 25℃
ꢀꢀꢀ =-40℃
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage: VIN1 (V)
Input Voltage: VIN1 (V)
33/43
XCM520 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block (Continued)
(5) Output Voltage vs. Ambient Temperature
VOUT=0.8V
VOUT=2.85V
VIN1=1.8V, CIN1=1μF(ceramic), CL=1μF(ceramic)
VIN1=4.0V, CIN1=1μF(ceramic), CL=1μF(ceramic)
2.95
0.84
0.82
0.80
0.78
0.76
2.90
2.85
2.80
2.75
OUT
I
=
0mA
OUT
I
=
0mA
= 10mA
= 30mA
=100mA
= 10mA
= 30mA
=100mA
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ambient Temperature: Ta (℃)
Ambient Temperature: Ta (℃)
VOUT=5.0V
VOUT=3.0V
VIN1=4.0V, CIN1=1μF(ceramic), CL=1μF(ceramic)
VIN1=6.0V, CIN1=1μF(ceramic), CL=1μF(ceramic)
5.20
3.10
3.05
3.00
2.95
2.90
5.10
5.00
4.90
4.80
OUT
I
=
0mA
OUT
I
=
0mA
= 10mA
= 30mA
=100mA
= 10mA
= 30mA
=100mA
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ambient Temperature: Ta (℃)
Ambient Temperature: Ta (℃)
(6) Supply Current vs. Ambient Temperature
VOUT=0.8V
VOUT=2.85V
VIN1=3.85V
VIN1=1.8V
30
28
26
24
22
20
30
28
26
24
22
20
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ambient Temperature: Ta (℃)
Ambient Temperature: Ta (℃)
34/43
XCM520
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block (Continued)
(6) Supply Current vs. Ambient Temperature (Continued)
VOUT=5.0V
VOUT=3.0V
VIN1=6.0V
VIN1=4.0V
30
28
26
24
22
20
30
28
26
24
22
20
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ambient Temperature: Ta (℃)
Ambient Temperature: Ta (℃)
(7) Input Transient Response
VOUT=0.8V
VOUT=0.8V
tr=tf=5μs, CL=1μF(ceramic), IOUT=100μA
tr=tf=5μs, CL=1μF(ceramic), IOUT=30mA
1.00
0.95
0.90
0.85
0.80
0.75
0.70
4
1.00
0.95
0.90
0.85
0.80
0.75
0.70
4
3
3
Input Voltage
Input Voltage
2
2
1
1
0
0
Output Voltage
Output Voltage
-1
-2
-1
-2
Time (200μs/div)
Time (40μs/div)
VOUT=0.8V
VOUT=2.85V
tr=tf=5μs, CL=1μF(ceramic), IOUT=100μA
tr=tf=5μs, CL=1μF(ceramic), IOUT=100mA
1.00
0.95
0.90
0.85
0.80
0.75
0.70
4
3.05
3.00
2.95
2.90
2.85
2.80
2.75
6
5
4
3
2
1
0
3
Input Voltage
Input Voltage
2
1
0
Ou
tp
u
t
V
o
lt
ag
e
Output Voltage
-1
-2
Time(4
0
μ
s
/div)
Time (200μs/div)
35/43
XCM520 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block (Continued)
(7) Input Transient Response (Continued)
VOUT=2.85V
VOUT=2.85V
tr=tf=5μs, CL=1μF(ceramic), IOUT=30mA
tr=tf=5μs, CL=1μF(ceramic), IOUT=100mA
3.05
3.00
2.95
2.90
2.85
2.80
2.75
6
5
4
3
2
1
0
3.05
3.00
2.95
2.90
2.85
2.80
2.75
6
5
4
3
2
1
0
Input Voltage
Input Voltage
Output Voltage
Output Voltage
Time (40μs/div)
Time (40μs/div)
VOUT=3.0V
VOUT=3.0V
tr=tf=5μs, CL=1μF(ceramic), IOUT=100μA
tr=tf=5μs, CL=1μF(ceramic), IOUT=30mA
3.20
3.15
3.10
3.05
3.00
2.95
2.90
6
5
4
3
2
1
0
3.20
3.15
3.10
3.05
3.00
2.95
2.90
6
5
4
3
2
1
0
Inp
u
t
V
o
lta
g
e
Input Voltage
Output Voltage
Output Voltage
Time (200μs/div)
s/div)
Time (40μ
VOUT=3.0V
VOUT=5.0V
tr=tf=5μs, CL=1μF(ceramic), IOUT=100mA
tr=tf=5μs, CL=1μF(ceramic), IOUT=100μA
3.20
3.15
3.10
3.05
3.00
2.95
2.90
6
5
4
3
2
1
0
5.20
5.15
5.10
5.05
5.00
4.95
4.90
8
7
6
5
4
3
2
Input Voltage
InputVoltage
Output Voltage
Output Voltage
Time (40μs/div)
Time(200μs/div)
36/43
XCM520
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block (Continued)
(7) Input Transient Response (Continued)
VOUT=5.0V
VOUT=5.0V
tr=tf=5μs, CL=1μF(ceramic), IOUT=100mA
tr=tf=5μs, CL=1μF(ceramic), IOUT=30mA
5.20
5.15
5.10
5.05
5.00
4.95
4.90
8
7
6
5
4
3
2
5.20
5.15
5.10
5.05
5.00
4.95
4.90
8
7
6
5
4
3
2
Input Voltage
Input Voltage
Output Voltage
Out
p
u
t
V
o
lta
g
e
Time (40μs/div)
Time (40μs/div)
(8) Load Transient Response
VOUT=0.8V
VOUT=0.8V
VIN1=1.8V, tr=tf=5μs, CIN1=CL=1μF(ceramic)
V
IN1=1.8V, tr=tf=5μs, CIN1=CL=1μF(ceramic)
0.90
0.80
0.70
0.60
0.50
0.40
250
200
150
100
50
0.90
0.80
0.70
0.60
0.50
0.40
250
200
150
100
50
Output Voltage
Output Voltage
100mA
Output Current
Output Current
50mA
10mA
10mA
0
0
Time (40μs/div)
Time (40μs/div)
VOUT=2.85V
VOUT=2.85V
VIN1=4.0V, tr=tf=5μs, CIN1=CL=1μF(ceramic)
VIN1=4.0V, tr=tf=5μs, CIN1=CL=1μF(ceramic)
2.95
2.85
2.75
2.65
2.55
2.45
250
200
150
100
50
2.95
2.85
2.75
2.65
2.55
2.45
250
200
150
100
50
Output Voltage
Output Voltage
100mA
10mA
Output Current
Output Current
50mA
10mA
0
0
Time (40μs/div)
Time (40μs/div)
37/43
XCM520 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block (Continued)
(8) Load Transient Response (Continued)
VOUT=3.0V
VOUT=3.0V
VIN1=4.0V, tr=tf=5μs, CIN1=CL=1μF(ceramic)
VIN1=4.0V, tr=tf=5μs, CIN1=CL=1μF(ceramic)
3.10
3.00
2.90
2.80
2.70
2.60
250
200
150
100
50
3.10
3.00
2.90
2.80
2.70
2.60
250
200
150
100
50
Output Voltage
Output Voltage
100mA
10mA
Output Current
Output Current
50mA
10mA
0
0
Time (40μs/div)
Time (40μs/div)
VOUT=5.0V
VOUT=5.0V
VIN1=6.0V, tr=tf=5μs, CIN1=CL=1μF(ceramic)
VIN1=6.0V, tr=tf=5μs, CIN1=CL=1μF(ceramic)
5.10
5.00
4.90
4.80
4.70
4.60
250
200
150
100
50
5.10
5.00
4.90
4.80
4.70
4.60
250
200
150
100
50
Output Voltage
Output Voltage
100mA
10mA
Output Current
Output Current
50mA
10mA
0
0
Time (40μs/div)
Time (40μs/div)
(9) Ripple Rejection Rate
VOUT=2.85V
VOUT=0.8V
VIN1=1.8VDC+0.5Vp-pAC, IOUT=30mA, CL=1μF(ceramic)
VIN1=3.85VDC+0.5Vp-pAC, IOUT=30mA, CL=1μF(ceramic)
80
80
60
40
20
0
60
40
20
0
0.01
0.1
1
10
100
0.01
0.1
1
10
100
Ripple Frequency: f(kHz)
Ripple Frequency: f(kHz)
38/43
XCM520
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
●Regulator Block (Continued)
(9) Ripple Rejection Rate (Continued)
VOUT=3.0V
VOUT=5.0V
VIN1=5.75VDC+0.5Vp-pAC, IOUT=30mA, CL=1μF(ceramic)
VIN1=4.0VDC+0.5Vp-pAC, IOUT=30mA, CL=1μF(ceramic)
80
60
40
20
0
80
60
40
20
0
0.01
0.1
1
10
100
0.01
0.1
1
10
100
Ripple Frequency: f(kHz)
Ripple Frequency: f(kHz)
(10) Cross Talk
VOUT1：3.0V & VOUT2：2.85V
VIN1=4.0V, CIN1=CL1=CL2=1μF(ceramic)
3.1
500
400
300
200
100
0
VR1 Output Voltage (3.0V)
3.0
2.9
2.8
2.7
2.6
VR2 Output Voltage (2.85V)
100mA
10mA
VR1
Output Current
Time (40μs/div)
39/43
XCM520 Series
■PACKAGING INFORMATION
●USP-12B01
2.8±0.08
(0.4) (0.4) (0.4) (0.4) (0.4)
(0.15) (0.25)
0.25± 0.2± 0.2± 0.2± 0.2± 0.2±
0.05 0.05 0.05 0.05 0.05
0.05
1
2
3
4
5
6
12 11 10 9
8
7
1.2±0.1
1.2±0.1
UNIT: mm
0.7±0.05 0.7±0.05
●USP-12B0Reference Pattern Layout
●USP-12B01 Reference Metal Mask Design
1.35
0.90
0.65
0.250.25
1.35
0.90
0.65
1.30
0.95
0.55
0.25 0.25
1.30
0.95
0.55
0.45
0.45
0.35
0.35
0.20
0.50
0.20
0.15
0.40
0.15
40/43
XCM520
Series
■PACKAGING INFORMATION (Continued)
●
USP-12B01 Power Dissipation
Power dissipation data for the USP-12B01 is shown in this page.
The value of power dissipation varies with the mount board conditions.
Please use this data as one of reference data taken in the described condition.
1. Measurement Condition (Reference data)
Condition:
Ambient:
Soldering:
Board:
Mount on a board
Natural convection
Lead (Pb) free
Dimensions 40 x 40 mm (1600 mm2 in one side)
1st Layer: Land and a wiring pattern
2
3
4
nd Layer: Connecting to approximate 50% of the 1st heat sink
rd Layer: Connecting to approximate 50% of the 2nd heat sink
th Layer: Noting
Material:
Glass Epoxy (FR-4)
1.6 mm
Thickness:
Through-hole: 2 x 0.8 Diameter (each TAB needs one through-hole)
Evaluation Board (Unit: mm)
2. Power Dissipation vs. Operating temperature
●Only 1ch heating, Board Mount (Tj max = 125℃)
Ambient Temperature（℃）
Power Dissipation Pd（mW）
Thermal Resistance (℃/W)
125.00
25
85
800
320
Pd vs. Ta
1000
800
600
400
200
0
25
45
65 85
Ambient Temperature: Ta (℃)
105
125
●Both 2ch heating same time, Board Mount (Tj max = 125℃)
Ambient Temperature（℃）
Power Dissipation Pd（mW）
Thermal Resistance (℃/W)
25
85
600
240
166.67
Pd vs. Ta
1000
800
600
400
200
0
25
45
65
85
105
125
Ambient Temperature: Ta (℃)
41/43
XCM520 Series
■MARKING RULE
●USP-12B01
① represents product series
MARK
1
PRODUCT SERIES
XCM520 Series
②③ represents combination of IC
12
11
10
1
2
3
4
5
6
MARK
PRODUCT SERIES
②
A
A
A
A
A
A
A
A
③
A
B
C
D
E
F
XC6401FF**＋XC9235A**D
XC6401FF**＋XC9235A**C
XC6401FF**＋XC9236A**D
XC6401FF**＋XC9236A**C
XC6401FF**＋XC9235B**D
XC6401FF**＋XC9235B**C
XC6401FF**＋XC9236B**D
XC6401FF**＋XC9236B**C
9
8
7
USP-12B01
G
H
④
represents combination of voltage for each IC (Sequence No.)
MARK
PRODUCT SERIES
XCM520**01**
XCM520**02**
XCM520**03**
XCM520**04**
1
2
3
4
⑤,⑥ represents production lot number
01～09、0A～0Z、11･･･9Z、
A1～A9、AA･･･Z9、ZA～ZZ repeated
(G, I, J, O, Q, W excluded)
* No character inversion used.
42/43
XCM520
Series
1. The products and product specifications contained herein are subject to change without
notice to improve performance characteristics. Consult us, or our representatives
before use, to confirm that the information in this datasheet is up to date.
2. We assume no responsibility for any infringement of patents, patent rights, or other
rights arising from the use of any information and circuitry in this datasheet.
3. Please ensure suitable shipping controls (including fail-safe designs and aging
protection) are in force for equipment employing products listed in this datasheet.
4. The products in this datasheet are not developed, designed, or approved for use with
such equipment whose failure of malfunction can be reasonably expected to directly
endanger the life of, or cause significant injury to, the user.
(e.g. Atomic energy; aerospace; transport; combustion and associated safety
equipment thereof.)
5. Please use the products listed in this datasheet within the specified ranges.
Should you wish to use the products under conditions exceeding the specifications,
please consult us or our representatives.
6. We assume no responsibility for damage or loss due to abnormal use.
7. All rights reserved. No part of this datasheet may be copied or reproduced without the
prior permission of TOREX SEMICONDUCTOR LTD.
43/43
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