Datasheet > A7525

A7525

更新时间： 2024-11-24 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
13页	379K
描述
DC-DC CONVERTER BOOST MICROPOWER SYNCHRONOUS

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A7525 数据手册

A7525

AiT Semiconductor Inc.

www.ait-ic.com

DC-DC CONVERTER BOOST(STEP-UP)

1.2MHz, MICROPOWER SYNCHRONOUS

DESCRIPTION

FEATURES

The A7525 is synchronous, fixed frequency,

step-up DC/DC converters delivering high

efficiency in a 6-lead SOT package. Capable of

supplying 3.3V at 100mA from a single AA cell

input, the device contain an internal NMOS switch

and PMOS synchronous rectifier. A switching

frequency of 1.2MHz minimizes solution footprint

by allowing the use of tiny, low profile inductors

and ceramic capacitors. The current mode PWM

design is internally compensated, reducing

external parts count. The A7525 features

continuous switching at light loads. Anti-ringing

control circuitry reduces EMI concerns by damping

the inductor in discontinuous mode, and the

device features low shutdown current of under

1uA.



High Efficiency: Up to 92%

1.2MHz Constant Switching Frequency

3.3V Output Voltage at I_OUT=100mA from a Single

AA Cell; 5.0V Output Voltage at I_OUT=500mA from

one Li battery.



Low Start-up Voltage: 1.0V

Integrated main switch and synchronous rectifier.

No Schottky Diode Required



2.5V to 5V Output Voltage Range

Automatic Pulse Skipping Mode Operation

Tiny External Components

<1μA Shutdown Current

Anti-ringing Control Reduces EMI

Available in SOT-26 Package

APPLICATION



Cellular and Smart Phones

The A7525 is available in SOT-26 package.

Microprocessors and DSP Core Supplies

Wireless and DSL Modems

MP3 Player

ORDERING INFORMATION

Digital Still and Video Cameras

Portable Instruments

Package Type

Part Number

TYPICAL APPLICATION CIRCUIT

A7525E6R-ADJ

A7525E6VR-ADJ

SOT-26

SPQ: 3,000pcs/Reel

V: Halogen free Package

R : Tape & Reel

Note

AiT provides all RoHS products

Figure 1

Basic Application Circuit with A7525 Adjustable Version

REV1.1

- JAN 2012 RELEASED, SEP 2017 UPDATED -

- 1 -

12 3 4 5 6 7...13

中文翻译

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