AP1603(2010) 查看數據表（PDF） - Diodes Incorporated.
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AP1603 Datasheet PDF : 10 Pages
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AP1603
STEP-UP DC/DC CONVERTER
Pin Descriptions
Pin Name
FB
GND
REF
LX
OUT
SHDN
Description
Feedback.
Ground.
1.2V Reference Voltage. Bypass with a 0.1μF capacitor.
N-Channel and P-Channel Power MOSFET Drain.
Power Output. OUT provides bootstrap power to the IC.
Shutdown Input. Drive high (>80% of VOUT) for operating mode. Drive low
(<20% of VOUT) for shutdown mode. Connect to OUT for normal operation.
Functional Block Diagram
SHDN
Minimum
Off-Time
One-Shot
Q TRIG
One-Shot
Maximum
On-Time
One-Shot
S
F/F
R
Q
TRIG Q
One-Shot
Zero
Crossing
EN Amplifier
P
N
VOUT
Current-Limit
Amplifier
FB connects to
Vcc or GND
Error
Amplifier
FB connects to
external feedback
resistors
0.1uF
47uF
LX
22uH
VIN
47uF
GND
FB
0.1uF
AP1603
Document number: DS31131 Rev. 3 - 2
3 of 10
www.diodes.com
June 2010
© Diodes Incorporated
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