AP4305 [BCDSEMI]
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER; 恒压恒流控制器
| 型号： | AP4305 |
| 厂家： | 
BCD SEMICONDUCTOR MANUFACTURING LIMITED |
| 描述： | CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER |
| 文件： | 总10页 (文件大小：101K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Preliminary Datasheet
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
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.
Easy Compensation
Applications
·
·
Adapters
Battery Chargers
The AP4305 is available in SOT-23-6 package.
SOT-23-6
Figure 1. Package Type of AP4305
BCD Semiconductor Manufacturing Limited
Sep. 2005 Rev. 1. 1
1
Preliminary Datasheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER AP4305
Pin Configuration
K Package
(SOT-23-6)
VCTRL
GND
VCC
1
2
3
6
VSENSE
ICTRL
5
4
VOUT
Figure 2. Pin Configuration of AP4305 (Top View)
Pin Description
Pin Number
Pin Name
Function
Input pin of the voltage control loop
Ground
1
2
3
4
5
6
VCTRL
GND
VOUT
ICTRL
VSENSE
VCC
Output pin. Sinking current only
Input pin of the current control loop
Input pin of the current control loop
Power supply
BCD Semiconductor Manufacturing Limited
Sep. 2005 Rev. 1. 1
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Preliminary Datasheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
Functional Block Diagram
AP4305
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
-
E1: Lead Free
Blank: Tin Lead
Circuit Type
TR: Tape and Reel
Blank: Tube
Package
K: SOT-23-6
Part Number
Marking ID
Temperature
Packing
Type
Package
Range
Tin Lead
Lead Free
Tin Lead
K2B
Lead Free
E2B
-40 to 105oC
SOT-23-6
AP4305KTR
AP4305KTR-E1
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
BCD Semiconductor Manufacturing Limited
Sep. 2005 Rev. 1. 1
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Preliminary Datasheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
Power Supply Voltage
VCC
20
V
Input Voltage
VIN
TJ
-0.3 to VCC
150
V
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
BCD Semiconductor Manufacturing Limited
Sep. 2005 Rev. 1. 1
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Preliminary Datasheet
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
Transconduction Gain (VCTRL).
Sink Current Only
1
3.5
2.5
Gmv
VREF
IIBV
mA/mV
<
TA
<
<
<
105oC
105oC
105oC
1.204
1.186
1.21
1.216
1.234
Voltage Control Loop Reference
V
<TA
50
Input Bias Current (VCTRL
)
nA
100
<TA
CURRENT CONTROL LOOP
TA=25oC
Transconduction Gain (ICTRL).
Sink Current Only
Gmi
1.5
7
mA/mV
mV
TA=25oC
IOUT=2.5
mA
198
192
200
202
208
Current Control Loop Reference
VSENSE
<TA<
-40oC 105oC
TA=25oC
Current Out of Pin ICTRL at
200mV
25
50
IIBI
µA
-40oC
<TA
<
105oC
OUTPUT STAGE
TA=25oC
TA=25oC
Low Output Voltage at 10mA
Sinking Current
VOL
200
mV
mA
Output Short Circuit Current.
Output to VCC. Sink Current Only
27
35
50
IOS
-40oC
<TA
<
105oC
BCD Semiconductor Manufacturing Limited
Sep. 2005 Rev. 1. 1
5
Preliminary Datasheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
AP4305
Typical Performance Characteristics
204
203
202
201
200
199
198
197
1.230
1.225
1.220
1.215
1.210
1.205
1.200
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
120
100
80
60
40
20
0
VCC=12V
VCC=5V
VCC=12V
VCC=5V
VCC=2.5V
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 6. IIBV vs. Ambient Temperature
Figure 7. IIBI vs. Ambient Temperature
BCD Semiconductor Manufacturing Limited
Sep. 2005 Rev. 1. 1
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Preliminary Datasheet
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
BCD Semiconductor Manufacturing Limited
Sep. 2005 Rev. 1. 1
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Preliminary Datasheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
Typical Application
AP4305
VOUT
To primary
R2
AP4305
VCC
R4
C1
1.210V
R3
470K
VOUT
C2
22pF
2.2nF
VCTRL
Load
C3
2.2nF
200mV
GND
R5
22K
ICTRL
VSENSE
R1
R6
500
GND
R7
Figure 10. Typical Application of AP4305
BCD Semiconductor Manufacturing Limited
Sep. 2005 Rev. 1. 1
8
Preliminary Datasheet
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
Mechanical Dimensions
AP4305
SOT-23-6
Unit: mm(inch)
0°
8°
2.820(0.111)
3.020(0.119)
0.300(0.012)
0.400(0.016)
0.200(0.008)
0.300(0.012)
0.600(0.024)
0.700(0.028)REF
0.950(0.037)TYP
0.100(0.004)
0.200(0.008)
0.000(0.000)
0.100(0.004)
1.800(0.071)
2.000(0.079)
1.050(0.041)
1.250(0.049)
1.050(0.041)
1.150(0.045)
BCD Semiconductor Manufacturing Limited
Sep. 2005 Rev. 1. 1
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http://www.bcdsemi.com
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.
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