Datasheet > A7220M8R

A7220M8R

更新时间： 2024-11-27 01:15:03

品牌	Logo	应用领域
创瑞 - AITSEMI		DC-DC转换器
页数	文件大小	规格书
12页	479K
描述
DC-DC CONVERTER BUCK (STEP-DOWN)

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中文翻译

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数据手册

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A7220M8R 数据手册

A7220

AiT Semiconductor Inc.

www.ait-ic.com

DC-DC CONVERTER BUCK (STEP-DOWN)

4.3V TO 18V INPUT, 2A SYNCHRONOUS STEP-DOWN

CONVERTER WITH FAST TRANSIENT RESPONSE

DESCRIPTION

FEATURES

The A7220 is a current mode synchronous

buck converter, and has proprietary



2A Output Current

High Efficient Integrated FETs Optimized for portable

application:

95mΩ (High side) and 90mΩ (Low side)

High Efficiency

Up to 95% Efficiency @ 5V Input, 3.3V Output

Up to 93% Efficiency @ 12V Input, 3.3V Output

Wide Input Voltage Range: 4.3V to 18V @ 2A loading

Wide Output Voltage Range: 0.918V to 14V @2A

loading ( 32W output @max)

Low Output Ripple and Allows Ceramic Output Capacitor

Thermal Shutdown Protection

340KHz Switching Frequency(fsw)

Cycle By Cycle Over Current Limit

+/-1.5% High Accuracy Feedback Voltage

Available in SOP8 and package

W-mode™® Gm curvature circuit that enables

fast transient response, enables the device to

adopt to both low ESR output capacitors, such

as POSCAP or SP-CAP, and ultra-low ESR

ceramic capacitors.



The A7220 operates from 4.3V to 18V V_IN

input, and the output voltage can be

programmed between 0.918V to 14V with 2A

output current, and +/-1.5% high accuracy

output voltage.



Due to 95mΩ (High side) and 90mΩ (Low

side) integrated FETs, the A7220 works in high

efficiency (up to 94% @12V Input, 3.3V output)

The A7220 is available in SOP8 Package.

APPLICATION



Wide Range of Applications for Low Voltage System

ORDERING INFORMATION

Digital TV Power Supply

High Definition Blu-ray Disc Players

Networking Home Terminal

Digital STB

Package Type

SOP8

Part Number

A7220M8R

A7220M8VR

Ideal for Portable Applications

R: Tape & Reel

Note

TYPICAL APPLICATION

V: Halogen free Package

AiT provides all RoHS products

Suffix “ V “ means Halogen free Package

REV3.0

- JUL 2010 RELEASED, FEB 2012 UPDATED -

- 1 -

12 3 4 5 6 7...12

中文翻译

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