Datasheet > APW1172

APW1172

更新时间： 2024-11-09 03:19:19

品牌	Logo	应用领域
茂达 - ANPEC		稳压器开关
页数	文件大小	规格书
21页	443K
描述
2.5A SWITCH STEP DOWN SWITCHING REGULATOR

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中文翻译

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APW1172 数据手册

APW1172

2.5A SWITCH STEP DOWN SWITCHING REGULATOR

Features

General Description

The APW1172 is a step down monolithic power

switching regulator with a switching current limit of

2.5A Internal Switch

Operating Input Voltage from 4.8V to 22V

3.8Aso it is able to deliver more than 2.5ADC current

to the load depending on the application conditions.

The output voltage can be set from 1.235Vto 22V.The

high current level is also achieved utilize an SO8

package with exposed padframe. The type of package

allowstore-ducetheRth(j-amb)downtoapproximately

45°C/W.

3.3V ±2% Reference Voltage

Output Voltage :

APW1172 - adjustable from 1.235V to 20V

Low Dropout Operation: 100% Duty Cycle

250KHz Internally Fixed Frequency

Voltage Feed-Forward

An internal oscillator fixes the switching frequency at

250KHz.

Zero Load Current Operation

Internal Current Limit

Having a minimum input voltage of 4.8V only, it is

particularly suitable for 5V bus, available in all computer

related applications.

Inhibit for Zero Current Consumption

Synchronization

Pulse by pulse current limit with the internal frequency

modulation offers an effective constant current short

circuit protection.

Protection Against Feedback Disconnection

Thermal Protection

External Soft-Start

Over-Voltage Protection

Pin Description

Lead Free Available (RoHS Compliant)

OUT

VCC

GND

VREF

Applications

SYNC

INH

Consumer: STB, DVD, TV, VCR, Car Radio,

LCD monitors

COMP

Networking: XDSL, Modems, DC-DC Modules

Computer: Printers, Audio/Graphic Cards,

Optical Storage, HardDiskDrive

Industrial: Chargers, Car Battery DC-DC

Converters

SOP-8-P (Top View)

= Thermal Pad

(connected to GNDplane 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.

www.anpec.com.tw

Rev. A.4 - Aug., 2005

12 3 4 5 6 7...21

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