AP4305KTR-G1 [BCDSEMI]
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER; 恒压恒流控制器
| 型号： | AP4305KTR-G1 |
| 厂家： | 
BCD SEMICONDUCTOR MANUFACTURING LIMITED |
| 描述： | CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER |
| 文件： | 总12页 (文件大小：693K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
General Description
Features
The AP4305 is a highly integrated solution for a con-
stant voltage/constant current mode SMPS application.
·
·
·
·
·
·
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
The AP4305 contains one 1.21V voltage reference
with ± 0.5% accuracy, one current sensing circuit and
two operational amplifiers. Combining the voltage ref-
erence with one operational amplifier makes AP4305
an ideal voltage controller for use in adapters and bat-
tery chargers. The other low voltage reference com-
bined with the other operational amplifier makes it an
ideal current limiter for output low side current sens-
ing.
Applications
·
·
Adapters
Battery Chargers
The AP4305 is available in SOT-23-6 package.
SOT-23-6
Figure 1. Package Type of AP4305
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
1
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Pin Configuration
K Package
(SOT-23-6)
Pin 1 Dot by Marking
VCTRL
VCC
6
5
4
1
2
3
VSENSE
ICTRL
GND
VOUT
Figure 2. Pin Configuration of AP4305 (Top View)
Pin Description
Pin Number
Pin Name
VCTRL
GND
Function
1
2
3
4
5
6
Input pin of the voltage control loop
Ground
VOUT
Output pin. Sinking current only
Input pin of the current control loop
Input pin of the current control loop
Power supply
ICTRL
VSENSE
VCC
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
2
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Functional Block Diagram
V
CC
6
1.210V
3
1
V
OUT
V
CTRL
200mV
2
GND
5
4
I
V
CTRL
SENSE
Figure 3. Functional Block Diagram of AP4305
Ordering Information
AP4305
-
Circuit Type
G1: Green
Package
TR: Tape and Reel
K: SOT-23-6
Package
Temperature Range
Part Number
Marking ID
Packing Type
-40 to 105oC
SOT-23-6
AP4305KTR-G1
G2B
Tape & Reel
BCD Semiconductor's products, as designated with "G1" suffix in the part number, are RoHS compliant and Green.
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
3
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
Power Supply Voltage
VCC
20
V
V
Input Voltage
VIN
TJ
-0.3 to VCC
150
oC
oC
Junction Temperature
Storage Temperature
TSTG
TLEAD
θJC
-65 to 150
260
oC
Lead Temperature (Soldering, 5sec)
Package Thermal Resistance (Junction to Case)
oC/W
92
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.
Recommended Operating Conditions
Parameter
Symbol
VCC
Min
2.5
Max
18
Unit
Power Supply Voltage
Operating Temperature Range
V
oC
TA
-40
105
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
4
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Electrical Characteristics
o
(V =5V, T =25 C, unless otherwise specified.)
CC
A
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
TOTAL CURRENT CONSUMPTION
TA=25oC
-40oC
Total Supply Current
Not Including the Output Sinking
Current
0.5
0.6
1
ICC
mA
<
TA
<
105oC
VOLTAGE CONTROL LOOP
TA=25oC
-40oC
TA=25oC
-40oC
TA=25oC
-40oC
1
3.5
2.5
Transconduction Gain (VCTRL).
Sink Current Only
Gmv
VREF
IIBV
mA/mV
V
<
TA
<
<
<
105oC
105oC
105oC
1.204
1.186
1.21
1.216
1.234
Voltage Control Loop Reference
<TA
50
Input Bias Current (VCTRL
)
nA
100
<TA
CURRENT CONTROL LOOP
TA=25oC
IOUT=2.5mA, TA=25oC
Transconduction Gain (ICTRL).
Sink Current Only
1.5
7
Gmi
mA/mV
mV
198
192
200
202
208
Current Control Loop Reference
VSENSE
<TA<
IOUT=2.5mA, -40oC 105oC
TA=25oC
25
50
IIBI
µA
Current Out of Pin ICTRL at 200mV
-40oC
<TA
<
<
105oC
OUTPUT STAGE
TA=25oC
TA=25oC
Low Output Voltage at 10mA
Sinking Current
200
VOL
mV
mA
Output Short Circuit Current.
Output to VCC, Sink Current Only
27
35
50
IOS
-40oC
<TA
105oC
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
5
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Typical Performance Characteristics
1.220
1.215
1.210
1.205
1.200
1.195
1.190
203
202
201
200
199
198
VCC=12V
VCC=5V
VCC=2.5V
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
100
120
Ambient Temperature (oC)
Ambient Temperature (oC)
Figure 4. V
vs. Ambient Temperature
Figure 5. VSENSE vs. Ambient Temperature
REF
45
40
35
30
25
20
15
100
80
60
40
20
0
VCC=12V
VCC=5V
VCC=2.5V
VCC=12V
VCC=5V
VCC=2.5V
-20
-40
-40
-20
0
20
40
60
80
100
120
-20
0
20
40
60
80
100
120
Ambient Temperature (oC)
Ambient Temperature (oC)
Figure 6. IIBV vs. Ambient Temperature
Figure 7. IIBI vs. Ambient Temperature
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
6
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Typical Performance Characteristics (Continued)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
60
50
40
30
20
10
0
VCC=12V
VCC=5V
VCC=2.5V
VCC=12V
VCC=5V
VCC=2.5V
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
100
120
Ambient Temperature (oC)
Ambient Temperature (oC)
Figure 8. Output Short Circuit Current vs.
Ambient Temperature
Figure 9. Supply Current vs. Ambient Temperature
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
7
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Typical Application
VOUT+
To primary
R2
IL
AP4305
VCC
R4
C1
1.210V
R3
VOUT
+
+
VCTRL
Load
C3
R5
GND
ICTRL
VSENSE
R1
R6
500
VOUT
-
Rss
R1+ R2
(V)
(A)
VOUT =VREF
×
R1
VSENSE
RSS
CurrentLimit =
Figure 10. Typical Application 1 of AP4305
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
8
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Typical Application (Continued)
VOUT
+
To primary
R2
IL
AP4305
VCC
R4
C1
1.210V
R3
VOUT
+
+
VCTRL
Load
C3
R5
GND
ICTRL
VSENSE
R1
R6
500
VOUT
-
Rss
R1+ R2
R1
(V)
VO = [VREF + (IL × RSS )]×
− (IL × RSS )
UT
VSENSE
(A)
CurrentLimit =
RSS
Figure 11. Typical Application 2 of AP4305
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
9
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Typical Application (Continued)
VOUT+
To primary
R2
IL
AP4305
VCC
R4
C1
1.210V
R3
VOUT
+
+
VCTRL
Load
C3
R5
GND
ICTRL
VSENSE
R1
R6
500
VOUT
-
Rss
R1+ R2
R1
(V)
VOUT =VREF
×
− (IL × RSS )
VSENSE ×VREF
VSENSE +VREF × RSS
(A)
CurrentLimit =
(
)
Figure 12. Typical Application 3 of AP4305
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
10
Data Sheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Mechanical Dimensions
SOT-23-6
Unit: mm(inch)
0°
8°
2.820(0.111)
3.020(0.119)
0.300(0.012)
0.200(0.008)
0.400(0.016)
0.300(0.012)
0.600(0.024)
6
5
4
Pin 1 Dot by Marking
1
2
3
0.700(0.028)REF
0.950(0.037)TYP
0.100(0.004)
0.200(0.008)
0.000(0.000)
0.150(0.006)
1.800(0.071)
2.000(0.079)
0.900(0.035)
1.300(0.051)
1.450(0.057)
MAX
May 2010 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
11
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