CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313
1
Aug. 2006 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Data Sheet
General Description
The AP4313 is a highly integrated solution for a con-
stant voltage/constant current mode SMPS application.
The AP4313 contains one 1.21V voltage reference
with ±1% accuracy, one current sensing circuit and two
operational amplifiers. Combining the voltage refer-
ence with one operational amplifier makes AP4313 an
ideal voltage controller for use in adapters and battery
chargers. The other low voltage reference combined
with the other operational amplifier makes it an ideal
current limiter for output low side current sensing.
The AP4313 is available in SOT-23-6 package.
Features
· Constant Voltage and Constant Current Control
· Precision Internal Voltage Reference
· Few External Components
· Easy Compensation
· Low Supply Current: 0.5mA
· Operating Temperature Range: -40 to 105oC
Applications
· Adapters
· Battery Chargers
Figure 1. Package Type of AP4313
SOT-23-6
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313
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Aug. 2006 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Data Sheet
Figure 2. Pin Configuration of AP4313 (Top View)
Pin Description
Pin Number Pin Name Function
1 VCTRL Input pin of the voltage control loop
2 GND Ground
3 VOUT Output pin. Sinking current only
4 ICTRL Input pin of the current control loop
5 VSENSE Input pin of the current control loop
6 VCC Power supply
Pin Configuration
2
1
3 4
5
6
(SOT-23-6)
K Package
VCTRL
GND
VOUT
VCC
VSENSE
ICTRL
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313
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Aug. 2006 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Data Sheet
Functional Block Diagram
Figure 3. Functional Block Diagram of AP4313
Package Temperature Range
Part Number Marking ID
Packing Type
Tin Lead Lead Free Tin Lead Lead Free
SOT-23-6 -40 to 105oC AP4313KTR AP4313KTR-E1 K6G E6G Tape & Reel
Circuit Type
Package
K: SOT-23-6
E1: Lead Free
Blank: Tin Lead
AP4313 -
TR: Tape and Reel
Ordering Information
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
VCC
VOUT
GND
VSENSEICTRL
1.210V
200mV
1
2
3
4 5
6
VCTRL
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313
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Aug. 2006 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Data Sheet
Parameter Symbol Value Unit
Power Supply Voltage VCC 20 V
Input Voltage VIN -0.3 to VCC V
Junction Temperature TJ 150 oC
Storage Temperature TSTG -65 to 150 oC
Lead Temperature (Soldering, 5sec) TLEAD 260 oC
Package Thermal Resistance (Junction to Case) RθJC 92 oC/W
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated
under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods
may affect device reliability.
Parameter Symbol Min Max Unit
Power Supply Voltage VCC 2.5 18 V
Operating Temperature Range TA -40 105 oC
Recommended Operating Conditions
Absolute Maximum Ratings (Note 1)
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313
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Aug. 2006 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Data Sheet
Parameter Symbol Conditions Min Typ Max Unit
TOTAL CURRENT CONSUMPTION
Total Supply Current
Not Including the Output Sinking
Current
ICC 0.6 1.2 mA
VOLTAGE CONTROL LOOP
Transconduction Gain (VCTRL).
Sink Current Only
Gmv 1 3.5 mA/mV
Voltage Control Loop Reference VREF 1.198 1.21 1.222 V
Input Bias Current (VCTRL) IIBV 50 nA
CURRENT CONTROL LOOP
Transconduction Gain (ICTRL). Gmi 1.5 7 mA/mV
Current Control Loop Reference VSENSE IOUT=2.5mA 196 200 204 mV
Current Out of Pin ICTRL at
-200mV
IIBI 25 µA
OUTPUT STAGE
Low Output Voltage at 10mA
Sinking Current
VOL 200 mV
Output Short Circuit Current.
Output to VCC. Sink Current Only
IOS 27 50 mA
(VCC=5V, TA=25oC, unless otherwise specified.)
Electrical Characteristics
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313
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Aug. 2006 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Data Sheet
Typical Performance Characteristics
Figure 4. VREF vs. Ambient Temperature
Figure 5. VSENSE vs. Ambient Temperature
Figure 6. VCTRL Pin Input Bias Current vs. Figure 7. ICTRL Pin Input Bias Current vs.
Ambient Temperature Ambient Temperature
-40 -20 0 20 40 60 80 100 120
1.195
1.200
1.205
1.210
1.215
1.220
1.225
V R
EF
(V
)
Ambient Temperature (oC)
-40 -20 0 20 40 60 80 100 120
195
196
197
198
199
200
201
202
VCC=12V
VCC=5V
V
CC
=2.5V
V S
EN
SE
(V
)
Ambient Temperature (oC)
-40 -20 0 20 40 60 80 100 120
-40
-20
0
20
40
60
80
V
CC
=12V
VCC=5V
VCC=2.5V
I IB
V (
nA
)
Ambient Temperature (oC)
-40 -20 0 20 40 60 80 100 120
15
20
25
30
35
40
VCC=12V
VCC=5V
VCC=2.5V
I IB
I (µ
A
)
Ambient Temperature (oC)
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313
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Aug. 2006 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Data Sheet
Typical Performance Characteristics (Continued)
Figure 8. Output Short Circuit Current vs. Figure 9. Supply Current vs. Ambient Temperature
Ambient Temperature
-40 -20 0 20 40 60 80 100 120
0
10
20
30
40
50
60
V
CC
=12V
VCC=5V
VCC=2.5V
I O
S (
m
A)
Ambient Temperature (oC)
-40 -20 0 20 40 60 80 100 120
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
VCC=12V
V
CC
=5V
VCC=2.5V
I C
C (
m
A
)
Ambient Temperature (oC)
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313
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Aug. 2006 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Data Sheet
Typical Application
Figure 10. Typical Application of AP4313
1.210V
200mV
VCC
VOUT
GND
VSENSEICTRL
R7
R4
To primary
R2
R1
VOUT
GND
Load
C1
2.2nF
R3
470KC2
22pF
C3
2.2nF
R5
22K
R6
500
VCTRL
AP4313
+ +
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4313
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Aug. 2006 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Data Sheet
Mechanical Dimensions
SOT-23-6 Unit: mm(inch)
2.820(0.111)
3.020(0.119)
2.
65
0(
0.
10
4)
2.
95
0(
0.
11
6)
1.
50
0(
0.
05
9)
1.
70
0(
0.
06
7)
0.950(0.037)TYP
1.800(0.071)
2.000(0.079)
0.300(0.012)
0.400(0.016)
0.700(0.028)REF
0.100(0.004)
0.200(0.008)
0°
8°
0.200(0.008)
0.300(0.012)
0.600(0.024)
0.000(0.000)
0.100(0.004)
1.050(0.041)
1.150(0.045)
1.050(0.041)
1.250(0.049)
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-
cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any
particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use
of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or
other rights nor the rights of others.
- Wafer Fab
Shanghai SIM-BCD Semiconductor Manufacturing Limited
800, Yi Shan Road, Shanghai 200233, China
Tel: +86-21-6485 1491, Fax: +86-21-5450 0008
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