Datasheet > RT7243

RT7243

更新时间： 2024-09-25 17:01:27

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
19页	262K
描述
6A, 18V, Synchronous Step-Down Converter

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RT7243 数据手册

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RT7243

6A, 18V, Synchronous Step-Down Converter

General Description

Features

^Low R_DS(ON)Power MOSFET Switches 26mΩ/19mΩ

^Input Voltage Range : 4.5V to 18V

^Adjustable Switching Frequency : 200kHz to 1.6MHz

^Current-Mode Control

The RT7243 is a high efficiency, monolithic synchronous

step-downDC/DC converter that can deliver up to 6Aoutput

current from a 4.5V to 18V input supply. The RT7243

current-mode architecture with external compensation

allows the transient response to be optimized over a wide

range of loads and output capacitors. Cycle-by-cycle

current limit provides protection against shorted outputs

and soft-start eliminates input current surge during start-

up. Fault condition protections include output under-voltage

protection, output over-voltage protection, and over-

temperature protection. The low current shutdown mode

provides output disconnection, enabling easy power

management in battery-powered systems.

^Synchronous to External Clock : 200kHz to 1.6MHz

^Accurate Voltage Reference 0.8V 1.25%

^Monotonic Start-Up into Pre-biased Outputs

^Adjustable Soft-Start

^Power Good Indicator

^Under-Voltage and Over-Voltage Protection

^Input Under-Voltage Lockout

^RoHS Compliant and Halogen Free

Applications

 High Performance Point of Load Regulation

Marking Information

02= : Product Code

 Notebook Computers

YMDNN : Date Code

 High Density and Distributed Power Systems

02=YM

DNN

Simplified Application Circuit

RT7243

BOOT

VIN

BOOT

PVIN

OUT

Enable

OUT

PGOOD

COMP1

OSC

COMP

RT/SYNC

SS/TR

COMP1

COMP2

GND

is a registered trademark of Richtek Technology Corporation.

DS7243-06 June 2019

www.richtek.com

12 3 4 5 6 7...19

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