Datasheet > CM3718

CM3718

更新时间： 2024-01-09 00:32:45

品牌	Logo	应用领域
虹冠电子 - CHAMP		稳压器
页数	文件大小	规格书
10页	329K
描述
1.5A LOW-NOISE PWM STEP-DOWN REGULATOR

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CM3718 数据手册

CM3718

1.5A L^OW-NOISE PWM STEP-DOWN REGULATOR

GENERAL DESCRIPTION

FEATURES

The CM3718 is a low-noise, pulse-width-modulated (PWM),

DC-DC step-down converter. It powers logic and transmitters

in small wireless systems such as cellular phones,

communicating PDAs, and handy-terminals. The device

features an internal synchronous rectifier for high efficiency; it

requires no external Schottky diode. Excellent noise

characteristics and fixed-frequency operation provide easy

post-filtering. The CM3718 is ideally suited for Li-lon battery

applications. It is also useful for +3V or +5V fixed input

applications.

Patent Number #6,452,366

1.2MHz switching and synchronization

Dynamic output-voltage adjustment from VREF to VIN

1.5A Guaranteed Output Current

95% Efficiency

No Schottky Diode Required

External Soft Start

8-pin PSOP power packages

The device operates in one of four modes. Forced PWM

mode operates at a fixed frequency regardless of the load.

Shutdown mode places the device in standby, reducing

quiescent supply current to under 0.1μA.

The CM3718 can deliver over 1.5A. The output voltage can be

adjusted from VREF to VIN. The input range is from 2.0V to

5.0V. Other features of the CM3718 include high efficiency,

low dropout voltage. It is available in a space-saving 8-pin

SOP package.

APPLICATIONS

PIN CONFIGURATION

PSOP-8 (PT-08)

Top View

Cellular Phone

Cordless Phone

PDAs and Handy-Terminals

CPU I/O Supplies

PVIN

VIN

GND

Notebook Chipset Supplies

Battery Operated Devices

PGND

VFB

VREF

2006/10/11 Rev. 1.6

Champion Microelectronic Corporation

Page 1

12 3 4 5 6 7...10

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与CM3718相关器件

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