XC6372B420PR [TOREX]
Switching Regulator/Controller;
| 型号： | XC6372B420PR |
| 厂家： | 
Torex Semiconductor |
| 描述： | Switching Regulator/Controller |
| 文件： | 总14页 (文件大小：232K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
04S_05XC6372 02.09.12 14:46 ページ 451
Series
Dual Mode [PWM/PFM] Step‐Up DC/DC Controllers/Converters
NCMOS Low Power Consumption
■Applications
GCellular phones, pagers
NOperating Voltage
:0.9V~10.0V
:2.0V~7.0V
GPalmtops
NOutput Voltage Range
GCameras, video recorders
GPortable equipment
NOutput Voltage Accuracy: 2.5%
NSelectable Oscillator Frequency
:50kHz, 100kHz,
180kHz
4
■General Description
■Features
The XC6372 series, unlike the conventional PWM controlled converters,
are a group of step-up DC/DC converters that automatically change their
operation modes into PFM modes while loads are light, such as when
the duty ratios are less than 10%.
Operating (start-up) voltage range
: 0.9V~10V
Output voltage range : 2.0V~7.0V in 0.1V increments
Highly accurate
: Set-up voltage 2.ꢀ%
When loads are light, as in the stand-by mode, the XC6372 changes to
PFM control so as to decrease oscillator frequencies, resulting in
reduced supply current.
Oscillator frequency : ꢀ0kHz, 100kHz, 180kHz ( 1ꢀ%ꢁ
selectable
Maximum output currents (Tr built-in)
: Typ.100mA @ VIN=3.0,
Therefore, the XC6372 is suitable for use with portable equipment that
requires the PWM controlled performance of low ripple and high output
current, and a supply current that varies between low and high. Built-in
proprietary phase compensation and soft start-up circuits ensure
excellent transient response and improved performance.
VOUT=ꢀ.0V....Note(1ꢁ
Highly efficient (Tr built-in)
: Typ.8ꢀ% @ VIN=3.0V,
VOUT=ꢀ.0V.....Note(1ꢁ
Output voltage can be selected from 2.0V to 7.0V in 0.1V increments
(accuracy: 2.ꢀ%ꢁ. Oscillator frequency is also selectable from three
frequencies; ꢀ0, 100, and 180kHz (accuracy: 1ꢀ%ꢁ.
Both switching transistor built-in and external Tr types are
available.
Five-lead packaged units offer either Chip Enable or
independent VOUT pin option.
Every built-in switching transistor type enables a step-up circuit to be
configured using only three external components; a coil, a diode, and a
capacitor. External transistor versions are available to accommodate
high output current applications.
Phase compensation and soft startup circuits included.
Small package
: SOT-89 mini-power mold (3-pin, ꢀ-pinꢁ
Note(1ꢁ: Performance depends on external components and
PCB layout.
SOT-89 small package.
■Typical Application Circuit
■Typical Performance
Characteristic
SD
VOUT
XC6372A301PR
L
L＝100μH（CＲ54），CL＝47μF（Tantalum）�
100
2.7V
VIN
80
SOT-89�
(TOP VIEW)
CIN
CL�
（Tantalum）�
60
40
20
0
VIN=0.9V
1
2
3
�
1.8V
1.2V
10
1.5V
GND
0.1
1
100
1000
Output Voltage:IOUT (mA)
451
04S_05XC6372 02.09.12 14:46 ページ 452
XC6372 Series
■Pin Configuration
5
4
1
2
3
1
2
3
SOT-89�
(TOP VIEW)
SOT-89-5�
(TOP VIEW)
■Pin Assignment
(XC6372A, C6372Bꢁ
4
PIN NUMBER
PIN NAME
FUNCTION
XC6372A
XC6372B
1
2
3
1
2
–
V
SS
Ground
Output voltage monitor / IC internal power supply
Switch
VOUT
Lx
–
3
EXT
External switch transistor drive
(XC6372C, C6372D)
PIN NUMBER
PIN NAME
FUNCTION
XC6372C
XC6372D
5
2
4
5
2
–
V
SS
Ground
Output voltage monitor / IC internal power supply
Switch
VOUT
Lx
EXT
CE
–
3
1
4
3
1
External switch transistor drive
Chip Enable
NC
No Connection
(XC6372E, C6372F)
PIN NUMBER
PIN NAME
FUNCTION
XC6372E
XC6372F
5
2
4
5
2
–
V
SS
Ground
IC internal power supply
Switch
VDD
Lx
EXT
–
3
1
4
3
1
External switch transistor drive
Output voltage monitor
No Connection
VOUT
NC
452
04S_05XC6372 02.09.12 14:46 ページ 453
XC6372
Series
■Product Classification
GSelection Guide
OPERATION
SWITCHING
RELATED
ADDITIONAL
FUNCTION
PART TYPE
XC6372A
PACKAGE
SOT-89
FEATURES
MODE
•
•
Switching transistor incorporated standard type.
PFM operation during light loads.
Built-in Transistor
"Lx"lead
PWM/PFM
------------
------------
•
•
External switching transistor standard type.
Adding external transistor can improve the
output capability up to several hundred mA.
External Transistor
"EXT"lead
XC6372B
XC6372C
XC6372D
XC6372E
XC6372F
PWM/PFM
PWM/PFM
PWM/PFM
PWM/PFM
PWM/PFM
SOT-89
SOT-89-5
SOT-89-5
SOT-89-5
SOT-89-5
•
Stand-by (CE) function added version to the
XC6372A
Stand-by current: 0.5µA max.
Built-in Transistor
"Lx"lead
Chip Enable(CE)
Chip Enable(CE)
•
•
Stand-by (CE) function added version to the
XC6372B
Stand-by current: 0.5µA max.
External Transistor
"EXT"lead
•
•
Individual power supply and set-up voltage
sensing leads are available.
Built-in Transistor
"Lx"lead
Separated
"VDD"and"VOUT"leads
4
•
Individual power supply and set-up voltage
sensing leads are available.
External Transistor
"EXT"lead
Separated
"VDD"and"VOUT"leads
GOrdering Information
XC6372qwerty
XC6372 Series
PWM/PFM Controlled
3-pin. Built-in switching transistor
3-pin. External switching transistor
A
B
C
Stand-by capability. Built-in switching transistor
Stand-by capability. External switching transistor
Separated VDD and VOUT. Built-in switching transistor
Separated VDD and VOUT. External switching transistor
①�
D
E
F
Output Voltage
e.g.,VOUT=3.5V ➔ w=3,
w
e
e=5
OSC Frequency 50kHz
0
OSC Frequency 100kHz
OSC Frequency 180kHz
r
1
2
q
q
=A
=C
~
~
B
F
➔
➔
SOT-89
t
y
P
SOT-89-5
R
L
Embossed tape: Standard Feed
Embossed tape: Reverse Feed
453
04S_05XC6372 02.09.12 14:46 ページ 454
XC6372 Series
■Packaging Information
GSOT-89
1.5±0.1
4.5±0.1
+0.15�
-0.2
1.6
+0.03�
-0.02
0.4
0.42±0.06
0.42±0.06
0.47±0.06
4
1.5±0.1 1.5±0.1
GSOT-89-5
+0.15�
-0.2
1.6
1.5±0.1
0.42±0.06
0.42±0.06
0.42±0.06
+0.03�
-0.02
0.4
0.42±0.06
0.42±0.06
0.47±0.06
1.5±0.1 1.5±0.1
4.5±0.1
454
04S_05XC6372 02.09.12 14:46 ページ 455
XC6372
Series
■Marking
w
q
r
e
2
1
4
3
SOT-89-5
(TOP VIEW)
SOT-89�
(TOP VIEW)�
q Represents the Product Classification
PRODUCT NAME
DESIGNATOR
XC6372A
XC6372B
XC6372C
XC6372D
XC6372E
XC6372F
1
2
1
2
3
4
4
w Represents the integer of the Output Voltage and Oscillator Frequency
OSCILLATOR FREQUENCY（kHz）�
INTEGER OF THE�
OUTPUT VOLTAGE
50
100
180
1
2
3
4
5
6
7
B
C
D
E
F
1
2
3
4
5
6
7
1
2
3
4
5
6
7
H
K
e Represents the decimal number of the Output Voltage and Oscillator Frequency
OSCILLATOR FREQUENCY（kHz）�
THE DECIMAL NUMBER OF�
OUTPUT VOLTAGE
50
100
180
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
H
K
L
M
r Denotes the production lot number�
0 to 9, A to Z repeated(G.I.J.O.Q.W excepted)
455
04S_05XC6372 02.09.12 14:46 ページ 456
XC6372 Series
■Block Diagram
XC6372A~XC6372D
XC6372E and XC6372F
VDD
Lx
VDD
VLx limiter
Soft Start
Vref
Lx
VDD
VLx limiter
Soft Start
Vref
Buffer
Buffer
VOUT
PWM/PFM Control�
OSC 50/100/180KHz
Phase comp
VSS
EXT
VOUT
PWM/PFM Control�
VSS
Phase comp
OSC 50/100/180KHz
+
+
－�
－�
Chip Enable
CE
EXT
Note: 1. Built-in transistor type units use the Lx pin.
External transistor type units use the EXT pin.
1. The VDD pin is only used with the XC6372E and XC6372F .
2. Built-in transistor type units use the Lx pin.
Note:
2. The CE pin is only used with the XC6372C and XC6372D.
3. VOUT pin serves also as VDD
External transistor type units use the EXT pin.
.
4
■Absolute Maximum Ratings
Ta=25°C
PARAMETER
OUT Input Voltage
Lx pin Voltage
Lx pin Current
EXT pin Voltage
EXT pin Current
SYMBOL
RATINGS
UNITS
V
V
OUT
12
12
V
V
V
LX
I
LX
400
mA
V
—
V
EXT
V
SS 0.3~VOUT+0.3
I
EXT
50
12
12
mA
V
CE Input Voltage
V
V
CE
DD
V
DD Input Voltage
V
Continuous Total Power
Dissipation
P
d
500
mW
Operating Ambient
Temperature
–
Topr
stg
30~+80
°C
°C
–
Storage Temperature
T
40~+125
456
04S_05XC6372 02.09.12 14:46 ページ 457
XC6372
Series
■Electrical Characteristics
XC6372A501PR
V
OUT=5.0V,FOSC=100kH
Z
Ta=25°C
PARAMETER
Output Voltage
SYMBOL
CONDITIONS
MIN
4.875
10
TYP
MAX
UNITS
VOUT
5.000
5.125
V
V
Maximum Input Voltage
VIN
External Components Connected.
Operation Start-up Voltage
V
ST1
0.90
0.80
V
V
I
OUT=1mA.
No external components.
Apply voltage to VOUT
Oscillation Start-up Voltage
VST2
.
Lx:10kΩ pull-up to 5V.
I
IN
12.8
80.2
25.7
µA
µA
No Load Input Current
Supply Current 1
(Note2)
V
IN=VOUT✕0.8, IOUT=0mA(Note1)
Same as VST
2.
I
DD
1
2
133.8
Apply output voltage 0.95 to VOUT
✕
.
Same as VST
2.
I
DD
Supply Current 2
8.2
1.4
16.5
µA
Apply output voltage 1.1 to VOUT
✕
.
Same as IDD1. VLX=0.4V.
R
SWON
2.4
1.0
115
Ω
L
X
Switch-On Resistance
Leakage Current
No external components. VOUT=VLX=10V.
Same as IDD1.
µA
L
X
I
LXL
4
Oscillator Frequency(Note 3)
85
80
100
87
kHz
F
OSC
Measuring of LX waveform.
Same as IDD1.
92
25
%
%
V
MAXDTY
PFMDTY
VLxLMT
Maximum Duty Ratio
Measuring of L
X
waveform.
Same as IDD1.
PFM Duty Ratio(Note 4)
10
17
Measuring of L
X
waveform.
Same as IDD1.
Apply output voltage to Lx.
LX
Limit Voltage
0.7
1.3
Voltage required to produce FOSC ✕ 2.
85
%
Efficiency
EFFI
4.0
10.0
20.0
ms
Slow-Start Time
TSS
Measuring conditions: Unless otherwise specified,VIN=VOUT✕0.6, IOUT=50mA. See Typical Application Circuits, Fig.1.
1. The Schottky diode (SD) must be type MA735, with reverse current (I )<1.0µA at reverse voltage (V )=10.0V
R
R
Note:
2. "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates which results
in less average power consumption. The current actually provided by an external VIN source is represented by "No-Load Input Current(IIN)".
3. When PWM operates at PWM Mode.
4. When PFM operates at PFM Mode.
XC6372B501PR
V
OUT=5.0V,FOSC=100kH
Z
Ta=25°C
PARAMETER
Output Voltage
CONDITIONS
MIN
4.875
10
TYP
MAX
UNITS
SYMBOL
V
OUT
5.000
5.125
V
V
Maximum Input Voltage
VIN
External Components Connected.
Operation Start-up Voltage
V
ST1
0.90
0.80
66.8
V
V
I
OUT=1mA.
No external components.
Apply voltage to VOUT
Oscillation Start-up Voltage
V
ST2
1
.
Supply Current 1
(Note1)
Same as VST
2.
IDD
40.0
8.2
µA
Apply output voltage 0.95 to VOUT
✕
.
Same as VST
2.
Supply Current 2
IDD
2
16.5
µA
Apply output voltage 1.1 to VOUT
✕
.
–
Same as IDD1. VEXT= 0.4V.
EXT "High" On Resistance
EXT "Low" On Resistance
R
EXTH
37.5
30
62.5
50
Ω
Ω
Same as IDD1. VEXT=0.4V.
R
EXTL
Oscillator Frequency
(Note 2)
Same as IDD1.
85
80
10
100
87
115
92
kHz
%
F
OSC
Measuring of EXT waveform.
Same as IDD1.
Measuring of EXT waveform.
MAXDTY
Maximum Duty Ratio
PFM Duty Ratio
(Note 3)
Same as IDD1.
Measuring of EXT waveform.
17
25
%
PFMDTY
EFFI
85
%
Efficiency
ms
Slow-Start Time
T
SS
4.0
10.0
20.0
Measuring conditions: Unless otherwise specified,VIN=VOUT✕0.6, IOUT=50mA. See Typical Application Circuits, Fig.2.
1. "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates which results
Note:
in less average power consumption.
2. When PWM operates at PWM Mode.
3. When PFM operates at PFM Mode.
457
04S_05XC6372 02.09.12 14:46 ページ 458
XC6372 Series
XC6372C501PR
PARAMETER
V
OUT=5.0V,FOSC=100kH
Z
Ta=25°C
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
V
OUT
4.875
5.000
5.125
Output Voltage
V
IN
10
V
V
Maximum Input Voltage
External Components Connected.
VST1
0.90
0.80
Operation Start-up Voltage
I
OUT=1mA.
No external components.
Apply voltage to VOUT.
VST2
Oscillation Start-up Voltage
V
Lx: 10k Ω pull-up to 5V.
I
IN
No Load Input Current
V
IN=VOUT✕0.8, IOUT=0mA(Note1)
12.8
80.2
25.7
µA
µA
Supply Current 1
(Note2)
Same as VST
2.
I
DD
1
2
133.8
Apply output voltage 0.95 to VOUT
✕
.
Same as VST
2.
8.2
1.4
16.5
µA
I
DD
Supply Current 2
Apply output voltage 1.1 to VOUT
✕
.
R
SWON
Same as IDD1. VLX=0.4V.
2.4
1.0
115
Ω
LX Switch-On Resistance
LX Leakage Current
4
I
LXL
No external components. VOUT=VL
X=10V.
µA
Same as IDD1.
Measuring of Lx waveform.
85
80
10
100
87
kHz
Oscillator Frequency(Note 3)
F
OSC
Same as IDD1.
Measuring of Lx waveform.
92
%
MAXDTY
PFMDTY
Maximum Duty Ratio
Same as IDD1.
Measuring of Lx waveform.
25
%
µA
V
PFM Duty Ratio(Note 4)
Stand-by Current
17
I
STB
Same as IDD1.
Same as IDD1.
0.5
CE"High" Voltage
CE"Low" Voltage
VCEH
0.75
Same as IDD1.
0.20
0.25
V
VCEL
Same as IDD1.VCE=VOUT✕0.95
µA
µA
V
CE"High" Current
CE"Low" Current
ICEH
–
ICEL
Same as IDD1.VCE=0V.
0.25
L
X
Limit Voltage
0.7
4.0
1.3
VLX
LMT
Same as IDD1. Apply output voltage to Lx.
Voltage required to produce FOSC✕2.
Efficiency
EFFI
85
%
Slow-Start Time
T
SS
10.0
20.0
ms
Measuring conditions: Unless otherwise specified, connect CE to VOUT, VIN=VOUT✕0.6, IOUT=50mA. See Typical Application Circuits, Fig.3.
Note
:
1. The Schottky diode (SD) must be type MA735, with reverse current (I
2. "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates
R
) < 1.0µA at reverse voltage (VR) =10.0V
which results in less average power comsumption. The current actually provided by an external VIN source is represented by "No-Load Input
Current (IIN)".
3. When PWM operates at PWM Mode.
4. When PFM operates at PFM Mode.
458
04S_05XC6372 02.09.12 14:46 ページ 459
XC6372
Series
Ta=25°C
XC6372D501PR
V
OUT=5.0V,FOSC=100kH
Z
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
PARAMETER
Output Voltage
VOUT
4.875
5.000
5.125
Maximum Input Voltage
V
IN
10
V
V
External
VST1
0.90
0.80
Operation Start-up Voltage
Components Connected. IOUT=1mA.
No external components.
Apply voltage to VOUT
V
Oscillation Start-up Voltage
V
ST2
1
.
Supply Current 1
(Note1)
Same as VST2.
IDD
66.8
16.5
µA
µA
40.0
8.2
Apply output voltage
✕ 0.95 to VOUT.
Same as VST2.
Supply Current 2
I
DD
2
Apply output voltage 1.1 to VOUT.
✕
–
Ω
Ω
Same as IDD1. VEXT= 0.4V
R
EXTH
62.5
50
EXT"High" On Resistance
EXT"Low" On Resistance
37.5
30
R
EXTL
Same as IDD1. VEXT=0.4V
Same as IDD1.
4
115
kHz
F
OSC
85
100
Oscillator Frequency (Note2)
Maximum Duty Ratio
Measuring of EXT waveform.
Same as IDD1.
Measuring of EXT waveform.
%
MAXDTY
PFMDTY
92
80
10
87
17
Same as IDD1.
Measuring of EXT waveform.
25
%
PFM Duty Ratio (Note3)
Stand-by Current
µA
Same as IDD1.
Same as IDD1.
0.5
I
STB
0.75
V
V
CE"High" Voltage
VCEH
Same as IDD1.
0.20
0.25
CE"Low" Voltage
VCEL
Same as IDD1.VCE=VOUT✕0.95.
CE"High" Current
CE"Low" Current
Efficiency
I
CEH
CEL
µA
µA
%
–
Same as IDD1.VCE=0V.
I
0.25
EFFI
85
Slow-Start Time
T
SS
ms
4.0
10.0
20.0
Measuring conditions: Unless otherwise specified, connect CE to VOUT, VIN=VOUT✕0.6, IOUT=50mA See Typical Application Circuits,Fig.4.
Note
:
1. "Supply Current 1" is the current while the oscillator is continuously oscillating. In an actual operation the oscillator periodically operates which
results in less average power consumption.
2. When PWM operates at PWM Mode.
3. When PFM operates at PFM Mode.
459
04S_05XC6372 02.09.12 14:46 ページ 460
XC6372 Series
Ta=25°C
XC6372E501PR
V
OUT=5.0V,FOSC=100kH
Z
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
V
OUT
Output Voltage
48.75 5.000 5.125
V
V
V
V
IN
Maximum Input Voltage
10
V
ST1
Operation Start-up Voltage
External Components Connected, IOUT=1mA.
No external components. Apply voltage to VOUT.
0.90
V
ST2
Oscillation Start-up Voltage
0.80
V
I
IN
V
IN=VOUT✕0.8,IOUT=0mA(Note1)
No Load Input Voltage
Supply Current 1(Note2)
12.8
25.7
µA
µA
Same as VST2.
80.2 133.8
I
DD
1
2
Apply output voltage
✕0.95 to VOUT.
Same as VST2.
I
DD
8.2
1.4
16.5
µA
Supply Current 2
Apply output voltage
✕
1.1 to VOUT.
Same as IDD1. VOUT=VLX=0.4V.
R
SWON
LXL
OSC
2.4
1.0
Ω
Lx Switch-On Resistance
Lx Leakage Current
I
µA
No external components. VOUT=VLX=10V.
Same as IDD1.
Measuring of Lx waveform.
Oscillator Frequency(Note 3)
F
85
80
100
87
115
92
kHz
%
Same as IDD1.
Measuring of Lx waveform.
Same as IDD1.
Measuring of Lx waveform.
Maximum Duty Ratio
MAXDTY
PFMDTY
4
PFM Duty Ratio(Note 4)
Lx Limit Voltage
10
17
25
%
V
Same as IDD1 Apply output
voltage to Lx.
VL
X
LMT
1.3
0.7
Voltage required to produce FOSC ✕ 2.
Efficiency
EFFI
85
%
4.0
10.0
20.0
ms
Slow-Start Time
TSS
Measuring conditions: Unless otherwise specified, connect VDD to VOUT. VIN=VOUT✕0.6, IOUT=50mA. See Typical Application Circuits,Fig.5.
Note:
1. The Schottky diode (SD) must be type MA2Q735, with reverse current (I
R
)<1.0µA at reverse voltage (VR)=10.0V
2. "Supply current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates which results in
less average power consumption. The current actually provided by external VIN source is represented by "No-Load Input Current (IIN)".
3. When PWM operates at PWM Mode.
4. When PFM operates at PFM Mode.
When the VDD and VOUT pins are independently used, the voltage range at the VDD pin should be 2.2V to 10V.
The IC operates from VDD=0.8V. However, output voltage and oscillator frequency are properly stabilized when VDD=2.2V or higher.
*
V
OUT=5.0V,FOSC=100kH
Z
Ta=25°C
XC6372F501PR
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
SYMBOL
Output Voltage
V
OUT
IN
48.75 5.000 5.125
V
V
V
10
Maximum Input Voltage
V
Operation Start-up Voltage
V
ST1
External Components Connected. IOUT=1mA.
No external components.
0.90
0.80
V
Oscillation Start-up Voltage
Supply Current 1(Note1)
V
ST
2
1
Apply voltage to VOUT
.
Same as VST Apply output
2.
IDD
40.0
8.2
66.8
16.5
62.5
µA
µA
Ω
voltage 0.95 to VOUT.
✕
Same as VST Apply output
2.
Supply Current 2
I
DD
2
voltage 1.1 to VOUT
✕
.
EXT "High" On Resistance
R
EXTH
EXTL
OSC
–
Same as IDD1. VEXT=VOUT 0.4V
37.5
R
Same as IDD1. VEXT=0.4V
EXT "Low" On Resistance
Oscillator Frequency(Note2)
30
50
Ω
F
Same as IDD1. Measuring of EXT waveform.
85
80
100
115
kHz
87
17
92
25
%
%
Maximum Duty Ratio
Same as IDD1. Measuring of EXT waveform.
Same as IDD1. Measuring of EXT waveform.
MAXDTY
PFMDTY
EFFI
10
PFM Duty Ratio(Note3)
Efficiency
85
%
4.0
10.0
20.0
ms
Slow-Start Time
TSS
Measuring conditions: Unless otherwise specified,connect VDD to VOUT,VIN=VOUT✕0.6, IOUT=50mA. See Typical Application Circuits,Fig.6.
Note:
1. "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In an actual operation the oscillator periodically operates which results
in less average power consumption.
2. When PWM operates at PWM Mode.
3. When PFM operates at PFM Mode.
When the VDD and VOUT pins are independently used, the voltage range at the VDD pin should be 2.2V to 10V.
The IC operates from VDD=0.8V. However, output voltage and oscillator frequency are properly stabilized when VDD=2.2V or higher.
*
460
04S_05XC6372 02.09.12 14:46 ページ 461
XC6372
Series
■Typical Application Circuits
SD
SD
VOUT
VOUT
L
L
Tr
VIN
VIN
SOT-89�
(TOP VIEW)�
�
CIN
SOT-89�
(TOP VIEW)
CIN
CL�
CL�
（Tantalum）
（Tantalum）�
CB
RB
1
2
3
1
2
3
GND
GND
L
: 47µH (SUMIDA, CR-54)
SD : MA2Q735 (Schottky diode; MATSUSHITA)
L
: 100µH (SUMIDA, CR-54)
CL : 16V 47µF (Tantalum capacitor, NICHICON, MCE)
CIN : 16V 220µF (Aluminium Electrolytic Capacitor)
RB : 1kΩ, CB:3300pF (FOSC=100kHz)
SD : MA2Q735 (Schottky diode; MATSUSHITA)
CL : 16V 47µF (Tantalum capacitor, NICHICON, MCE)
CIN : 16V 220µF (Aluminium Electrolytic Capacitor)
4
Tr : 2SC3279, 2SD1628G
Fig-1 XC6372A Application
Fig-2 XC6372B Application
CE
VOUT
CE
SD
SD
VOUT
L
L
3
4
2
1
3
2
1
Tr
VIN
VIN
(TOP VIEW)�
SOT-89-5
CIN
CIN
(TOP VIEW)�
SOT-89-5
CL�
CL�
（Tantalum）�
（Tantalum）�
CB
RB
5
4
5
GND
GND
L
: 47µH (SUMIDA, CR-54)
L
: 100µH (SUMIDA, CR-54)
SD : MA2Q735 (Schottky diode; MATSUSHITA)
SD : MA2Q735 (Schottky diode; MATSUSHITA)
CL : 16V 47µF (Tantalum capacitor, NICHICON, MCE)
CIN : 16V 220µF (Aluminium Electrolytic Capacitor)
CL : 16V 47µF(Tantalum capacitor, NICHICON, MCE)
CIN : 16V 220µF (Aluminium Electrolytic Capacitor)
RB : 1kΩ, CB:3300pF (FOSC=100kHz)
Tr : 2SC3279, 2SD1628G
Fig-3 XC6372C Application
Fig-4 XC6372D Application
461
04S_05XC6372 02.09.12 14:46 ページ 462
XC6372 Series
SD
SD
VOUT
VOUT
L
L
3
2
1
3
4
2
1
Tr
CIN
CIN
VIN
(TOP VIEW)�
SOT-89-5
(TOP VIEW)�
SOT-89-5
VDD
VDD
VIN
CL�
（Tantalum）�
CL�
（Tantalum）�
CB
RB
4
5
5
GND
GND
L
: 100µH (SUMIDA, CR-54)
L
: 47µH (SUMIDA, CD-54)
SD : MA2Q735 (Schottky diode; MATSUSHITA)
SD : MA2Q735 (Schottky diode; MATSUSHITA)
CL : 16V 47µF (Tantalum capacitor, NICHICON, MCE)
CIN : 16V 220µF (Aluminium Electrolytic Capacitor)
CL : 16V 47µF (Tantalum capacitor, NICHICON, MCE)
CIN : 16V 220µF (Aluminium Electrolytic Capacitor)
R
: 1kΩ, CB:3300pF (FOSC=100kHz)
4
Tr : 2SC3279, 2SD1628G
Fig-5 XC6372E Application
Fig-6 XC6372F Application
462
04S_05XC6372 02.09.12 14:46 ページ 463
XC6372
Series
■Typical Performance Characteristics
(1) OUTPUT VOLTAGE vs. OUTPUT CURRENT
XC6372A501PR
XC6372A301PR
L＝100μH（CＲ54），CL＝47μF（Tantalum）�
L＝100μH（CＲ54），CL＝47μF（Tantalum）�
5.2
5.1
5.0
4.9
4.8
3.10
3.05
3.00
2.95
2.90
1.5V
1.2V
1.5V
2.0V
1.2V
1.8V
VIN=0.9V
�
3.0V
VIN=0.9V
2.7V
4.0V
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current:IOUT (mA)
Output Current:IOUT (mA)
4
(2) EFFICIENCY vs. OUTPUT CURRENT
XC6372A301PR
XC6372A501PR
L＝100μH（CＲ54），CL＝47μF（Tantalum）�
L＝100μH（CＲ54），CL＝47μF（Tantalum）�
100
80
60
40
20
0
100
�
�
2.7V
4.0V
80
3.0V
60
40
20
0
VIN=0.9V
VIN=0.9V
2.0V
�
1.8V
1.2V
10
�
1.2V
�
1.5V
1.5V
0.1
1
100
1000
0.1
1
10
100
1000
Output Current:IOUT（mA）�
Output Current:IOUT（mA）�
(3) RIPPLE VOLTAGE vs. OUTPUT CURRENT
XC6372A501PR
XC6372A301PR
L＝100μH（CＲ54），CL＝47μF（Tantalum）�
100
L=100μH(CＲ54),CL=47μF(Tantalum)
100
80
60
40
20
0
80
60
40
20
0
3.0V
�
1.8V
V
2.0
1.5V
1.2V
1.5V
1.2V
VIN=0.9V
2.7V
VIN=0.9V
�
4.0V
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current:IOUT (mA)
Output Current:IOUT (mA)
463
04S_05XC6372 02.09.12 14:46 ページ 464
XC6372 Series
(4) NO LOAD INPUT CURRENT vs. INPUT VOLTAGE
XC6372A501PR
XC6372A301PR
L＝100μH（CＲ54），CL＝47μF（Tantalum）�
L＝100μH（CＲ54），CL＝47μF（Tantalum）�
200
100
80
60
40
20
0
150
100
50
0
0
1
2
3
4
5
0
1
2
3
Input Voltage:VIN (V)
Input Voltage:VIN (V)
4
464
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