Datasheet > A7222

A7222

更新时间： 2022-02-26 12:30:29

品牌	Logo	应用领域
创瑞 - AITSEMI		DC-DC转换器
页数	文件大小	规格书
13页	652K
描述
DC-DC CONVERTER BUCK SYNCHRONOUS

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数据手册

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A7222 数据手册

A7222

AiT Semiconductor Inc.

DC-DC CONVERTER BUCK (STEP-DOWN)

500kHz, 18V, 2A SYNCHRONOUS

www.ait-ic.com

DESCRIPTION

FEATURES

The A7222 is a fully integrated, high-efficiency 2A

synchronous rectified step-down converter. The

A7222 operates at high efficiency over a wide

output current load range.



High Efficiency: Up to 96%

500kHz Frequency Operation

2A Output Current

No Schottky Diode Required

This device offers two operation modes, PWM

control and PFM Mode switching control, which

allows a high efficiency over the wider range of the

load.

4.2V to 18V Input Voltage Range

0.8V Reference

Slope Compensated Current Mode Control for

Excellent Line and Load Transient Response

Integrated internal compensation

Stable with Low ESR Ceramic Output

Capacitors



The A7222 is available in SOT-26 package.



Over Current Protection with Hiccup-Mode

Thermal Shutdown

ORDERING INFORMATION

Inrush Current Limit and Soft Start

-40°C to +85°C Temperature Range

Available in SOT-26 Package

Package Type

Part Number

A7222E6R

A7222E6VR

SOT-26

SPQ: 3,000pcs/Reel

V: Halogen free Package

R: Tape & Reel

APPLICATION

Note



Distributed Power Systems

AiT provides all RoHS products

Digital Set Top Boxes

Flat Panel Television and Monitors

Wireless and DSL Modems

Notebook Computer

TYPICAL APPLICATION

Figure 1.

Figure 2.

NOTE1: C1 and C2 recommended using 22uF ceramic capacitors. If the electrolytic capacitor is used, it is recommended that the ceramic

capacitor in parallel with a capacitance value of 2.2uF or more.

NOTE2: The resistance R3 in Figure 1 makes the loop more stable that recommended not exceed 20kΩ. If it isn’t used, the resistance

R1、R2 should be adjusted(See Figure2.). The value of R1 is recommended to be about 300kΩ.

REV1.0

- SEP 2016 RELEASED -

- 1 -

12 3 4 5 6 7...13

中文翻译

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