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APW7153BKII-TRG

3A 5V 2MHz Synchronous Buck Converter

Anpec Electronics 

APW7153/A/B

3A 5V 2MHz Synchronous Buck Converter

Features

• High Efficiency up to 95%

- PFM/PWM Mode Operation

• Adjustable Output Voltage from 0.8V to VIN

• Integrated 110mΩ High/Low Side MOSFET

• Programmable Switching Frequency: 300kHz to

2MHz

• Low Dropout Operation: 100% Duty Cycle

• Stable with Low ESR Capacitors

• Power-On-Reset Detection on VDD and PVDD

• Integrate Soft-Start and Soft-Off

• Over-Temperature Protection

• Over-Voltage Protection

• Under-Voltage Protection

• High/Low Side Current-Limit

• Power Good Indicator (APW7153A/B)

• Enable/Shutdown Function

• Small TDFN3x3-10 and SOP-8P Packages

• Lead Free and Green Devices Available

(RoHS Compliant)

Applications

General Description

APW7153/A/B is a 3A synchronous buck converter with

integrated 110mΩ power MOSFETs. The APW7153/A/B

is designed with a current-mode control scheme; it can

convert wide input voltage of 2.6V to 5.5V to the output

voltage adjustable from 0.8V to 5.5V to provide excellent

output voltage regulation.

The APW7153/A/B is equipped with an PFM/PWM mode

operation. At light load, the IC operates in the PFM mode

to reduce the switching losses. At heavy load, the IC works

in PWM. At PWM mode, the switching frequency is set by

the external resistor.

The APW7153/A/B 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 TDFN3x3-10 and SOP-8P provides

a very compact system solution external components and

PCB area.

Simplified Application Circuit

VIN

• LCD Minitor/TV

• Set-Top Box

• DSL, Switch HUB

• Notebook Computer

• Portable Instrument

VDD PVDD

APW7153/A/B

VOUT

Pin Configuration

APW7153

APW7153

SHDN/RT 1

GND 2

LX 3

PGND 4

9

Expose

Pad

8 COMP SHDN/RT 1

7 FB

6 VDD

GND 2

LX 3

LX 4

5 PVDD PGND 5

11

Expose

Pad

10 COMP

9 FB

8 VDD

7 PVDD

6 PVDD

SOP-8P

(Top View)

TDFN3X3-10

(Top View)

APW7153A

APW7153B

EN/RT 1

GND 2

LX 3

LX 4

PGND 5

11

Expose

Pad

10 COMP

9 FB

8 POK

7 VDD

6 PVDD

SHDN/RT 1

GND 2

LX 3

LX 4

PGND 5

11

Expose

Pad

10 COMP

9 FB

8 POK

7 VDD

6 PVDD

TDFN3X3-10

(Top View)

TDFN3X3-10

(Top View)

9 The pin 2 and 4 must be connected to the pin 9 (Exposed Pad)

11 The pin 2 and 5 must be connected to the pin 11 (Exposed Pad)

ANPEC reserves the right to make changes to improve reliability or manufacturSability without notice, and

advise customers to obtain the latest version of relevant information to verify before placing orders.

Copyright © ANPEC Electronics Corp.

1

Rev. A.6 - Aug., 2012

www.anpec.com.tw

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