Datasheet > NR8040

NR8040

更新时间： 2024-02-27 03:54:39

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
15页	276K
描述
RT7237C

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中文翻译

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数据手册

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NR8040 数据手册

RT7237C

2A, 18V, 800kHz Synchronous Step-Down Converter

General Description

Features

1.5% High Accuracy Reference Voltage

The RT7237C is a high efficiency, monolithic synchronous

step-down DC/DC converter that can deliver up to 2A

output current from a 4.5V to 18V input supply. The

RT7237C's current mode architecture and external

compensation allow the transient response to be

optimized over a wide input range and loads. Cycle-by-

cycle current limit provides protection against shorted

outputs, and soft-start eliminates input current surge during

start-up. The RT7237C also provides under voltage

protection and thermal shutdown protection. The low

current (<3μA) shutdown mode provides output

disconnection, enabling easy power management in

battery-powered systems. The RT7237C is available in

an SOP-8 (Exposed Pad) package.

^z4.5V to 18V Input Voltage Range

^z2A Output Current

^zIntegrated N-MOSFET Switches

^zCurrent Mode Control

^zFixed Frequency Operation : 800kHz

^zOutput Adjustable from 0.8V to 12V

^zStable with Low ESR Ceramic Output Capacitors

^zUp to 95% Efficiency

^zProgrammable Soft-Start

^zCycle-by-Cycle Over Current Limit

^zInput Under Voltage Lockout

z Output Under Voltage Protection

z Thermal Shutdown Protection

z RoHS Compliant and Halogen Free

Marking Information

Applications

RT7253CHGSP : Product Number

z Wireless AP/Router

RT7237CH

GSPYMDNN

YMDNN : Date Code

z Set-Top-Box

z Industrial and Commercial Low Power Systems

z LCDMonitors and TVs

z Green Electronics/Appliances

z Point of Load Regulation of High-PerformanceDSPs

Simplified Application Circuit

BOOT

RT7237C

VIN

BOOT

OUT

Chip Enable

OUT

GND

COMP

is a registered trademark of Richtek Technology Corporation.

DS7237C-04 November 2012

www.richtek.com

12 3 4 5 6 7...15

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