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APW7324

Description
4A,5V, 500KHz Synchronous Buck Converter
File Size348KB,22 Pages
ManufacturerAnpec
Websitehttp://www.anpec.com.tw/
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APW7324 Overview

4A,5V, 500KHz Synchronous Buck Converter

APW7324
4A,5V, 500KHz Synchronous Buck Converter
Features
High Efficiency up to 94%
- Automatic Skip/PWM Mode Operation
Adjustable Output Voltage from 0.8V to V
IN
Operating from 2.9 to 6V Supply
Integrated 85mΩ High Side / 75mΩ Low Side
MOSFETs
Low Dropout Operation: 100% Duty Cycle
Stable with Low ESR Ceramic Capacitors
Current up to 4A
Power-On-Reset Detection on VCC and VIN
Integrate Soft-Start and Soft-Stop
Over-Temperature Protection
Over-Voltage Protection
Under-Voltage Protection
High/ Low Side Current Limit
Power Good Indication
Enable/Shutdown Function
Available in SOP-8P and TDFN3x3-10 Packages
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
APW7324 is a synchronous buck converters with inte-
grated 85mΩ high side and 75mΩ low side power
MOSFETs. The APW7324 with a current-mode control
scheme can convert wide input voltage of 2.9V to 6V to
the output voltage adjustable from 0.8V to 6V to provide
excellent output voltage regulation.
The APW7324 is equipped with an automatic Skip/PWM
mode operation. At light load , the IC operates in the Skip
mode to reduce the switching losses. At heavy load, the
IC works in PWM mode.
The APW7324 is also equipped with Power-on-reset, soft
start, soft-stop, and whole protections (under-voltage,
over-voltage, over-temperature and current-limit) into a
single package.
This device, available in SOP-8P and TDFN3x3-10
packages, provides a very compact system solution ex-
ternal components and PCB area.
Simplified Application Circuit
V
IN
C2
R3
VCC
C3
ON
OFF
VIN
POK
L1
LX
R1
V
OUT
C4
Applications
Notebook Computer & UMPC
LCD Monitor/TV
Set-Top Box
DSL, Switch HUBr
Portable Instrument
APW7324
FB
EN
GND PGND
R2 C1
(optional)
Pin Configuration
VCC 1
POK 2
GND 3
FB 4
8 VIN
7 LX
6 PGND
5 EN
EN 1
NC 2
PGND 3
LX 4
LX 5
10 FB
9 GND
8 POK
7 VCC
6 VIN
SOP-8P
(Top View)
TDFN3x3-10
(Top View)
Exposed Pad (connected to GND plane
for better heat dissipation
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. A.4 - Aug., 2013
1
www.anpec.com.tw

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