XC6368C321ML-G [TOREX]
Switching Regulator/Controller;
| 型号： | XC6368C321ML-G |
| 厂家： | 
Torex Semiconductor |
| 描述： | Switching Regulator/Controller |
| 文件： | 总28页 (文件大小：1412K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
XC6367/XC6368Series
ETR0401_004a
PWM Controlled, PWM/PFM Switchable Step-up DC/DC Controllers
☆GreenOperation-Compatible
■GENERAL DESCRIPTION
The XC6367/XC6368 series are multi-functional step-up DC/DC controllers which provide high efficiency outputs by using an
externally connected transistor, coil, diode and capacitor.
Output voltage is selectable in 0.1V increments within a range of 1.5V ~ 6.5V (±2.5%). For output voltages outside this
range, we recommend FB version, which has a 1.0V internal reference voltage. Using the FB version, the required output
voltage can be set-up using 2 external resistors.
With a 300kHz oscillation frequency, the size of the external components can be reduced.
Control switches from PWM to PFM during light loads with the XC6368 (PWM/PFM switchable) and the series is highly
efficient from light loads to large output currents.
Soft start time of XC6367/ XC6368A, B, and E series is internally set to 10ms and XC6367/68C, D, and F series regulate
soft-start time by connecting resistors and capacitors externally.
During stand-by (CE pin "Low"), supply current is reduced to less than 0.5μA.
■FEATURES
■APPLICATIONS
Input Voltage Range : 0.9V ~ 10V
Operating Voltage Range : 2.0V ~ 10V
Output voltage Range : 1.5V ~ 6.5V (0.1V increments) (
●Electronic information organizers
●Palmtops
±
2.5%)
●Cellular and portable phones
●Portable audio systems
●Various multi-function power supplies
Oscillation Frequency : 300kHz, 100kHz (±15%)
Custom products for 180kHz, 500kHz
: More than 200mA (VIN=1.8V, VOUT=3.3V)
: 84% (TYP.)
Output Current
High Efficiency
Stand-by capability
Selection
: ISTB=0.5μA (MAX.)
: Soft-start set-up external
Output voltage set-up internal (VOUT)
Output voltage set-up external (FB)
PWM/PFM Control (XC6368)
: SOT-25
Package
Environmentally Friendly : EU RoHS Compliant, Pb Free
■TYPICAL PERFORMANCE
■TYPICAL APPLICATION CIRCUIT
CHARACTERISTICS
1/28
XC6367/XC6368 Series
■PIN CONFIGURATION
（
）
■PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTION
XC6367/XC6368
A, B, C, D
E, F
5
2
4
5
-
EXT
VDD
: External Transistor Connection
: Supply Voltage Input
: Ground
4
GND
: Chip Enable
(C, D, F Types: Soft Start External Set-Up,
Soft Start Capacitor Connected)
3
1
1
2
CE
: Output Voltage Monitor
(E, F Types: Output Voltage Monitor, Power Supply)
(B, D Types: Output Voltage External Set-up)
VOUT
(FB)
■PRODUCT CLASSIFICATION
●Selection Guide
START
Soft-Start Internally Set-Up
Output Voltage Internally Set-Up (VOUT
)
XC6367A,XC6368A
XC6367E,XC6368E
XC6367B,XC6368B
V
OUT=VDD pin
Output Voltage Externally Set-Up (FB)
Soft-Start Externally Set-Up
Output Voltage Internally Set-Up (VOUT
)
XC6367C,XC6368C
XC6367F,XC6368F
XC6367D,XC6368D
V
OUT=VDD pin
Output Voltage Externally Set-Up (FB)
2/28
XC6367/XC6368
Series
■PRODUCT CLASSIFICATION (Continued)
●Ordering Information
*1
*1
(
(
)
)
XC6367①②③④⑤⑥-⑦
XC6368①②③④⑤⑥-⑦
PWM Control
PWM/PFM Switching Control
ITEM
DESCRIPTION
DESIGNATOR
SYMBOL
A
B
C
D
E
F
VOUT type: VOUT internally set-up, Soft-start internally set-up
FB type: VOUT externally set-up, Soft-start internally set-up
VOUT type: VOUT internally set-up, Soft-start externally set-up
FB type: VOUT externally set-up, Soft-start externally set-up
VOUT type: VOUT internally set-up, Soft-start internally set-up
VOUT type: VOUT internally set-up, Soft-start externally set-up
①
Type of DC/DC Converter
15 ~ 65 VOUT type: 3.0V output → ②=3, ③=0
②③
Output Voltage
10
FB type (B, D types): 10 fixed → ②=1, ③=0 fixed
3
1
300kHz
100kHz
④
Oscillation Frequency
2
180kHz (Custom)
500kHz (Custom)
SOT-25 (3,000/Reel)
SOT-25 (3,000/Reel)
5
MR
MR-G
Package
⑤⑥-⑦
(Order Unit)
(*1)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
3/28
XC6367/XC6368 Series
■BLOCK DIAGRAMS
XC6367, XC6368 Series A, C, E, F types (VOUT)
Phase
Compensation
VOUT
VDD
Error Amp.
PWM
Comparator
+
+
Buffer,
Driver
EXT
-
-
Vref with
Soft Start,
CE
Ramp Wave
Generator,
OSC
GND
PWM/PFM
Controller
CE
* VOUT and VDD of the E and F types should be connected internally.
XC6367, XC6368 Series B,D types (FB)
Phase
Compensation
VDD
Error Amp.
PWM
Comparator
+
FB
+
Buffer,
Driver
EXT
-
-
Vref with
Soft Start,
CE
Ramp Wave
Generator,
OSC
GND
PWM/PFM
Controller
CE
4/28
XC6367/XC6368
Series
■ABSOLUTE MAXIMUM RATINGS
Ta = 25℃
UNITS
PARAMETER
SYMBOL
RATINGS
-0.3 ~ +12.0
-0.3 ~ +12.0
-0.3 ~ +12.0
-0.3 ~ +12.0
-0.3 ~ VDD+0.3
±100
VDD Pin Voltage
VDD
V
V
VOUT Pin Voltage
VOUT
VFB
FB Pin Voltage
V
CE Pin Voltage
VCE
V
EXT Pin Voltage
VEXT
IEXT
V
EXT Pin Current
mA
mW
℃
℃
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Pd
150
Topr
Tstg
-30 ~ +80
-40 ~ +125
*Voltage is all ground standardized.
■ELECTRICAL CHARACTERISTICS
VOUT=3.3V, FOSC=300kHz, Ta=25℃
XC6367A333MR, XC6368A333MR
PARAMETER
Output Voltage
SYMBOL
VOUT
VDD
CONDITIONS
MIN.
TYP.
MAX.
3.383
10.0
-
UNITS
V
3.218 3.300
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
2.0
-
-
V
VIN
10.0
V
VST1
VST2
VHLD
IDD1
Tr: 2SD1628, IOUT=1.0mA
-
-
0.9
0.8
0.7
200
35
V
VOUT=CE: Apply voltage
-
-
V
Tr: Use of a 2SX1628, IOUT=1.0mA
VOUT=CE=setting output voltage x 0.95
VOUT=CE=setting output voltage + 0.5V
VOUT=setting output voltage x 0.95, CE=0V
Same as IDD1
-
-
V
-
130
20
-
μA
μA
μA
kHz
%
Supply Current 2
IDD2
-
Stand-by Current
ISTB
-
255
78
15
0.65
-
0.5
345
92
Oscillator Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
FOSC
300
85
25
-
MAXDTY Same as IDD1
PFMDTY IOUT=0mA
35
%
VCEH
VCEL
REXTH
REXTL
EFFI
TSS
VOUT=setting output voltage x0.95
-
V
CE "Low" Voltage
VOUT=setting output voltage x0.95
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
-
0.20
43
V
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
-
29
19
84
10
Ω
-
27
Ω
-
-
%
Soft-Start Time
5
20
msec
Conditions: Unless otherwise stated, connect VDD to VOUT; VIN=setting output voltage x 0.6, IOUT=130mA
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
5/28
XC6367/XC6368 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367A503MR, XC6368A503MR
VOUT=5.0V, FOSC=300kHz,Ta=25℃
PARAMETER
Output Voltage
SYMBOL
VOUT
VDD
CONDITIONS
MIN.
TYP.
MAX. UNITS
4875
5.000 5.125
V
V
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
2.0
-
-
10.0
-
VIN
10.0
V
VST1
VST2
VHLD
IDD1
Tr: 2SD1628, IOUT=1.0mA
-
-
0.9
0.8
0.7
280
38
0.5
345
92
35
-
V
VOUT=CE : Apply voltage
-
-
V
Tr: 2SD1628, IOUT=1.0mA
-
-
V
VOUT=CE=setting output voltage x 0.95
VOUT=CE=setting output voltage + 0.5V
VOUT=setting output voltage x 0.95, CE=0V
Same as IDD1
-
180
22
-
μA
μA
μA
kHz
%
Supply Current 2
IDD2
-
Stand-by Current
ISTB
-
255
78
15
0.65
-
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
FOSC
300
85
25
-
MAXDTY Same as IDD1
PFMDTY
VCEH
IOUT=0mA
%
VOUT=setting output voltage x0.95
VOUT=setting output voltage x0.95
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
V
CE "Low" Voltage
VCEL
-
0.20
29
19
-
V
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
REXTH
REXTL
EFFI
-
20
13
87
Ω
Ω
%
-
-
Connect RSS and CSS,
CE:0V→3.0V
Soft-Start Time
TSS
5
10
20
msec
(XC6367C/F and XC6368C/F series)
Conditions: Unless otherwise specified, connect VDD to VOUT; VIN=setting output voltage x 0.6, IOUT=200mA
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
* 4: The values of supply voltage and NOTE *1 do not apply to XC6367E/F and XC6368E/F series. For XC6367E/F and
XC6368E/F series, output voltage less than 2.0V cannot be set-up.
6/28
XC6367/XC6368
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367B103MR, XC6368B103MR
VOUT=3.0V , FOSC=300kHz, Ta=25℃
PARAMETER
Output Voltage
SYMBOL
VOUT
VDD
CONDITIONS
MIN.
TYP.
MAX. UNITS
2.925 3.000 3.075
V
V
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
2.0
-
-
10.0
-
VIN
10.0
V
VST1
Tr: 2SD1628, IOUT=1.0mA
VDD=CE: Apply voltage, FB=0V
Tr: 2SD1628, IOUT=1.0mA
VDD=CE=2.85V,FB=0V
VDD=CE=3.5V,FB=1.2V
VDD=2.85V, CE=0V, FB=0V
Same as IDD1
-
-
0.9
0.8
0.7
190
34
0.5
345
92
35
-
V
VST2
-
-
V
VHLD
-
-
V
IDD1
-
120
20
-
μA
μA
μA
kHz
%
Supply Current 2
IDD2
-
Stand-by Current
ISTB
-
255
78
15
0.65
-
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
FOSC
MAXDTY
PFMDTY
VCEH
VCEL
300
85
25
-
Same as IDD1
IOUT=0mA
%
VDD=2.85V,FB=0V
V
CE "Low" Voltage
VDD=2.85V,FB=0V
-
0.20
47
30
-
V
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
REXTH
REXTL
EFFI
Same as IDD1, VEXT=VDD-0.4V
Same as IDD1, VEXT=0.4V
-
32
20
84
Ω
Ω
%
-
-
Connect RSS and CSS,
Soft-Start Time
TSS
5
10
20
msec
CE:0V→3.0V (XC6367D/68D series)
Conditions: Unless otherwise stated, VIN=1.8V, IOUT=120mA
External components : RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 47pF
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
7/28
XC6367/XC6368 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367A331MR, XC6368A331MR
VOUT=3.3V, FOSC=100kHz, Ta=25℃
PARAMETER
Output Voltage
SYMBOL
VOUT
VDD
CONDITIONS
MIN.
TYP.
MAX.
UNITS
V
3.218 3.300 3.383
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
2.0
-
-
10.0
-
V
VIN
10.0
V
VST1
VST2
VHLD
IDD1
Tr: 2SD1628, IOUT=1.0mA
-
-
0.9
0.8
0.7
100
20
0.5
115
92
35
-
V
VOUT=CE: Apply voltage
-
-
V
Tr: 2SD1628, IOUT=1.0mA
-
-
V
VOUT=CE=setting output voltage x 0.95
VOUT=CE=setting output voltage + 0.5V
VOUT=setting output voltage x 0.95, CE=0V
Same as IDD1
-
50
11
-
μA
μA
μA
kHz
%
Supply Current 2
IDD2
-
-
Stand-by Current
ISTB
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
FOSC
85
78
15
0.65
-
100
85
25
-
MAXDTY Same as IDD1
PFMDTY IOUT=0mA
%
VCEH
VCEL
REXTH
REXTL
EFFI
TSS
VOUT=setting output voltage x0.95
V
CE "Low" Voltage
VOUT=setting output voltage x0.95
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
-
0.20
43
27
-
V
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
-
29
19
84
10
Ω
-
Ω
-
%
Soft-Start Time
5
20
msec
Conditions: Unless otherwise stated, connect VDD to VOUT; VIN=setting output voltage x 0.6, IOUT=130mA
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
8/28
XC6367/XC6368
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367A501MR, XC6368A501MR
VOUT=5.0V, FOSC=100kHz, Ta=25℃
PARAMETER
Output Voltage
SYMBOL
VOUT
VDD
CONDITIONS
MIN.
TYP.
MAX. UNITS
4875
5.000 5.125
V
V
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
2.0
-
-
10.0
-
VIN
10.0
V
VST1
Tr: 2SD1628, IOUT=1.0mA
VOUT=CE: Apply voltage
-
-
0.9
0.8
0.7
120
22
0.5
115
92
35
-
V
VST2
-
-
V
VHLD
IDD1
Tr: 2SX1628, IOUT=1.0mA
VOUT=CE=setting output voltage x 0.95
VOUT=CE=setting output voltage + 0.5V
VOUT=setting output voltage x 0.95, CE=0V
Same as IDD1
-
-
V
-
70
11
-
μA
μA
μA
kHz
%
Supply Current 2
IDD2
-
-
Stand-by Current
ISTB
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
FOSC
MAXDTY
PFMDTY
VCEH
VCEL
85
78
15
0.65
-
100
85
25
-
Same as IDD1
IOUT=0mA
%
VOUT=setting output voltage x0.95
VOUT=setting output voltage x0.95
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
V
CE "Low" Voltage
-
0.20
29
19
-
V
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
REXTH
REXTL
EFFI
-
20
13
87
10
Ω
-
Ω
-
%
Soft-Start Time
TSS
5
20
msec
Conditions: Unless otherwise stated, connect VDD to VOUT; VIN=setting output voltage x 0.6, IOUT=200mA
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
9/28
XC6367/XC6368 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367B101MR, XC6368B101MR
VOUT=3.0V, FOSC=100kHz, Ta=25℃
MIN. TYP. MAX. UNITS
2.925 3.000 3.075
PARAMETER
Output Voltage
SYMBOL
VOUT
VDD
CONDITIONS
V
V
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
2.0
-
-
10.0
-
VIN
10.0
V
VST1
Tr: 2SD1628, IOUT=1.0mA
VDD=CE: Apply voltage, FB=0V
Tr: 2SD1628, IOUT=1.0mA
VDD=CE=2.85V, FB=0V
VDD=CE=3.5V, FB=1.2V
VDD=2.85V, CE=0V, FB=0V
Same as IDD1
-
-
0.9
0.8
0.7
90
20
0.5
115
92
35
-
V
VST2
-
-
V
VHLD
IDD1
-
-
V
-
50
11
-
μA
μA
μA
kHz
%
Supply Current 2
IDD2
-
-
Stand-by Current
ISTB
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (*3)
CE "High" Voltage
FOSC
MAXDTY
PFMDTY
VCEH
VCEL
85
78
15
0.65
-
100
85
25
-
Same as IDD1
IOUT=0mA
%
VDD =2.85V,FB=0V
V
CE "Low" Voltage
VDD =2.85V,FB=0V
-
0.20
47
30
-
V
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
REXTH
REXTL
EFFI
Same as IDD1, VEXT=VDD-0.4V
Same as IDD1, VEXT=0.4V
-
32
20
84
10
Ω
-
Ω
-
%
Soft-Start Time
TSS
5
20
msec
Conditions: Unless otherwise stated, VIN=1.8V, IOUT=120mA
External components : RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 47pF
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
10/28
XC6367/XC6368
Series
■TEST CIRCUITS
11/28
XC6367/XC6368 Series
■TEST CIRCUITS (Continued)
12/28
XC6367/XC6368
Series
■TEST CIRCUITS (Continued)
13/28
XC6367/XC6368 Series
■TEST CIRCUITS (Continued)
14/28
XC6367/XC6368
Series
■TEST CIRCUITS (Continued)
●External Components
Tr
: XP161A1355PR (N-ch Power MOSFET, TOREX)
As the breakdown voltage of XP161A1355PR is 8V, take care
with the power supply voltage. With output voltages over 6V,
use the XP161A1265PR with a breakdown voltage of 12V.
VST1 : XP161A1355PR = 1.2V (MAX.)
XP161A1265PR = 1.5V (MAX.)
L
: 22μH (CR54, SUMIDA FOSC=300kHz)
47μH (CR75, SUMIDA FOSC=100, 180kHz)
10μH (CR54, SUMIDA FOSC=500kHz)
SD
CIN
CL
: MA2Q735 (Schottky Diode, MATSUSHITA)
: 16V, 220μF (Aluminium Electrolytic Capacitor)
: 16V, 47μF + 47μF (Tantalum capacitor, NICHICON MCE)
NPN Tr type:
Tr
: 2SD1628 (SANYO)
Rb
Cb
: 500Ω(Adjust according to load and Tr. hFE levels)
: 2200pF (Ceramic Type)
Set up so that CB < 1÷(2πx RB x FOSC x 0.7)
C, D, F type (soft-start externally set-up):
CSS
RSS
: 0.1μF (Ceramic Capacitor)
: 470kΩ(C, F Type), 220kΩ(D Type)
B, D type (FB versions)
RFB
CFB
: Set up so that RFB1÷RFB2 = VOUT - 1 (VOUT = setting output voltage),
Please use with RFB1 + RFB2 ≦2MΩ
: Set up so that fzfb = 1÷(2 xπx CFB x RFB1) is within the
0.1 to 20kHz range (10kHz conventional)
Adjustments necessary in respect of L, CL.
VOUT = 3.0V
e.g
RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 47pF
For using MOSFET, We recommend using TOREX MOSFETs, which has a gate protection diode built-in.
GATE PROTECTION DIODE BUILT-IN MOSFET
XP161A1355PR
Rds (ON)
0.15Ω@ Vgs=1.5V
0.095Ω@ Vgs=2.5V
XP161A1265PR
15/28
XC6367/XC6368 Series
■NOTES ON USE
1. Take ample care to ensure that none of the IC's, nor the external component's, absolute maximum ratings are
exceeded.
2. Be extremely careful when selecting parts and do not limit your reference to the specifications and characteristics for
the DC/DC converter alone. The IC also depends, to a great extent, upon the external components.
3. Arrange the peripherals in the environs of the IC. In order to reduce wiring impedance, use short, thick wires. In
particular, wire the load capacitor as close as possible and strengthen the ground wiring sufficiently.
4. Ground current during switching may cause the IC's operations to become unstable due to changes in ground voltage,
so please strengthen the IC's GND pin surroundings.
●External Components
1.Setting soft-start time
In order to lengthen soft-start time we recommend that you use the C or D types of the series which have soft start
time externally set-up.
Soft-start time (TSS) is between MIN & MAX, as indicated in the graphs below, so please select soft-start capacitor
value (CSS) to suit your application.
2. RFB1, CFB set up
fzfb = 1 ÷ ( 2πx CFB x RFB1 )
In order to achieve a value for fzfb within the range of 0.1kHz to 20kHz, we recommend that values for RFB1 & CFB
are selected from the area indicated within the lines of fzfb = 0.1kHz and fzfb = 20 kHz as shown on the graph
below. Please select combinations of values as close to the fzfb = 10kHz line as possible.
XC6367/6368B10xMR (FB)
XC6367/6368D10xMR (FB)
16/28
XC6367/XC6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
17/28
XC6367/XC6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(1) Output Voltage vs. Output Current (Continued)
18/28
XC6367/XC6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current
19/28
XC6367/XC6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current (Continued)
20/28
XC6367/XC6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current
21/28
XC6367/XC6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current (Continued)
22/28
XC6367/XC6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(4) Output Voltage vs. Ambient Temperature
(5) Supply Current 1 vs. Ambient Temperature
(6) Supply Current 2 vs. Ambient Temperature
(7) Stand-by Current vs. Ambient Temperature
(8) EXT "H" On Resistance vs. Ambient Temperature
(9) EXT "L" On Resistance vs. Ambient Temperature
23/28
XC6367/XC6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(10) Oscillation Frequency vs. Ambient Temperature
(12) PFM Duty Ratio vs. Ambient Temperature
(14) Operation Start Voltage vs. Ambient Temperature
(11) Maximum Duty Ratio vs. Ambient Temperature
(13) Efficiency vs. Ambient Temperature
(15) Operation Hold Voltage vs. Ambient Temperature
24/28
XC6367/XC6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(16) Oscillation Start Voltage vs. Ambient Temperature
(17) Soft-Start Time vs. Ambient Temperature
(18) CE "L" Voltage vs. Ambient Temperature
(19) CE "H" Voltage vs. Ambient Temperature
25/28
XC6367/XC6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(20) Load Transient Response
26/28
XC6367/XC6368
Series
■PACKAGING INFORMATION
●SOT-25
■MARKING RULE
●XC6367/6368 Series
① represents product series
MARK
PRODUCT SERIES
XC6367A
MARK
PRODUCT SERIES
XC6368A
A
B
C
D
E
F
K
L
XC6367B
XC6368B
XC6367C
M
N
P
R
XC6368C
XC6367D
XC6368D
XC6367E
XC6368E
XC6367F
XC6368F
SOT-25
(TOP VIEW)
② represents integer of output voltage and oscillation frequency
OSCILLATION FREQUENCY (kHz)
OUTPUT VOLTAGE (V)
100
B
180
1
300
500
B
1
1
2
3
4
5
6
2
C
2
C
3
D
3
D
4
E
4
E
5
F
5
F
6
H
6
H
FOR CUSTOM PRODUCT
S
③ represents decimal number of output voltage and oscillation frequency
OSCILLATION FREQUENCY (kHz)
OUTPUT VOLTAGE (V)
100
0
180
0
300
A
500
A
0
1
2
3
4
5
6
7
8
9
1
1
B
B
2
2
C
D
E
C
D
E
3
3
4
4
5
5
F
F
6
6
H
K
H
K
7
7
8
8
L
L
9
9
M
M
④ represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excluded)
27/28
XC6367/XC6368 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.
28/28
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