Datasheet > RT7297A

RT7297A

更新时间： 2024-09-17 12:23:35

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
14页	280K
描述
3A, 18V, 340kHz Synchronous Step-Down Converter

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RT7297A 数据手册

RT7297A

3A, 18V, 340kHz Synchronous Step-Down Converter

General Description

Features

1.5% High Accuracy Reference Voltage

The RT7297Ais a high efficiency, monolithic synchronous

step-down DC/DC converter that can deliver up to 3A

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

RT7297A's current mode architecture and external

compensation allow the transient response to be

optimized over a wide input voltage range and loads.

Cycle-by-cycle current limit provides protection against

shorted outputs, and soft-start eliminates input current

surge during start-up. The RT7297A 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 RT7297A is available in

an SOP-8 (Exposed Pad) package.

^z4.5V to 18V Input Voltage Range

^z3A Output Current

^zIntegrated N-MOSFET Switches

^zCurrent Mode Control

^zFixed Frequency Operation : 340kHz

^zOutput Adjustable from 0.8V to 15V

^zUp to 95% Efficiency

^zProgrammable Soft-Start

^zStable with Low ESR Ceramic Output Capacitors

^zCycle-by-Cycle Over Current Protection

^zInput Under Voltage Lockout

z Output Under Voltage Protection

z Thermal Shutdown Protection

z RoHS Compliant and Halogen Free

Ordering Information

RT7297A

Applications

z Wireless AP/Router

Package Type

z Set-Top-Box

SP : SOP-8 (Exposed Pad-Option 1)

z Industrial and Commercial Low Power Systems

z LCDMonitors and TVs

Lead Plating System

Z : ECO (Ecological Element with

Halogen Free and Pb free)

z Green Electronics/Appliances

z Point of Load Regulation of High-PerformanceDSPs

H : UVP Hiccup

L : UVP Latch-Off

Note :

Pin Configurations

Richtek products are :

(TOP VIEW)

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

` Suitable for use in SnPb or Pb-free soldering processes.

BOOT

VIN

GND

COMP

GND

Marking Information

SOP-8 (Exposed Pad)

RT7297AxZSP : Product Number

RT7297Ax

ZSPYMDNN

X : H or L

YMDNN : Date Code

is a registered trademark of Richtek Technology Corporation.

DS7297A-03 September 2012

www.richtek.com

12 3 4 5 6 7...14

中文翻译

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