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AP3003 Datasheet(PDF) 3 Page - BCD Semiconductor Manufacturing Limited

Part No. AP3003
Description  150kHz 3A BUCK DC-DC CONVERTER
Download  16 Pages
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Maker  BCDSEMI [BCD Semiconductor Manufacturing Limited]
Homepage  http://www.bcdsemi.com
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AP3003 Datasheet(HTML) 3 Page - BCD Semiconductor Manufacturing Limited

 
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150kHz 3A BUCK DC-DC CONVERTER
AP3003
Data Sheet
3
Feb. 2007 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
Functional Block Diagram
Figure 3. Functional Block Diagram of AP3003
ON/OFF
FEEDBACK
VIN
OUTPUT
GND
+
_
+
_
+
_
+
_
START UP
2.5V
REGULATOR
1.23V
REFERENCE
LATCH
150KHz
OSC
DRIVER
&
INV
THERMAL
SHUTDOWN
EA
COMP
COMP
COMP
2.5V
Bias
Current
Frequency Shift
220
mV
200
mV
1:100
R2
R1
1
2
3
4
5
R1=2.49k
Ω R2=4.18kΩ
R1=2.49k
Ω R2=7.57kΩ
R1=2.49k
Ω R2=21.8kΩ
For 3.3V
5V
12V
ADJ
4.4
R1=Open
R2=0


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