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A7330 Datasheet(PDF) 2 Page - AIT Components Ltd.

Part No. A7330
Description  DC-DC CONVERTER BUCK SENSORLESS CC/CV
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Maker  AITCOMPONENTS [AIT Components Ltd.]
Homepage  http://aitcomponents.com
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 2 page
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AiT Semiconductor Inc.
www.ait-ic.com
A7330
DC-DC CONVERTER BUCK (STEP-DOWN)
SENSORLESS CC/CV
REV1.0
- JAN 2016 RELEASED -
- 2 -
PIN DESCRIPTION
Top View
Pin #
Symbol
Function
1
HSB
High Side Bias Pin. This provides power to the internal high-side MOSFET
gate driver. Connect a 22nF capacitor from HSB pin to SW pin.
2
IN
Power Supply Input. Bypass this pin with a 10Ī¼F ceramic capacitor to GND,
placed as close to the IC as possible.
3
SW
Power Switching Output to External Inductor.
4
GND
Ground. Connect this pin to a large PCB copper area for best heat dissipation.
Return FB, COMP, and ISET to this GND, and connect this GND to power GND
at a single point for best noise immunity.
5
FB
Feedback Input. The voltage at this pin is regulated to 800mV. Connect to the
resistor divider between output and GND to set the output voltage.
6
COMP
Error Amplifier Output. This pin is used to compensate the converter.
7
OVP
OVP input. If the voltage at this pin exceeds 0.8V, the IC shuts down high side
switch. There is a 2Ī¼A pull-up current at this pin.
8
ISET
Output Current Setting Pin. Connect a resistor from ISET to GND to program
the output current.
Exposed
Pad
Heat Dissipation Pad. Connect this exposed pad to large ground copper area
with copper and vias.




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