Datasheet > RT6238BLGQUF

RT6238BLGQUF

更新时间： 2022-09-29 19:49:07

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
23页	489K
描述
IC REG BUCK ADJ 8A SYNC

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

RT6238BLGQUF 数据手册

RT6238A/B

8A, 18V, 500kHz, ACOT^TMSynchronous Step-Down Converter

General Description

Features

^Fast Transient Response

The RT6238A/B is a high-performance 500kHz, 8Astep-

down regulator with internal power switches and

synchronous rectifiers. It features quick transient response

using its Advanced Constant On-Time (ACOT^TM) control

architecture that provides stable operation with small

ceramic output capacitors and without complicated

external compensation, among other benefits. The input

voltage range is from 4.5V to 18V and the output is

adjustable from 0.7V to 8V. The proprietaryACOT^TMcontrol

improves upon other fast response constant on-time

architectures, achieving nearly constant switching

frequency over line, load, and output voltage ranges. Since

there is no internal clock, response to transients is nearly

instantaneous and inductor current can ramp quickly to

maintain output regulation without large bulk output

capacitance. The RT6238A/B is stable with and optimized

for ceramic output capacitors. With internal 35mΩ switches

and 14mΩ synchronous rectifiers, the RT6238A/B displays

excellent efficiency and good behavior across a range of

applications, especially for low output voltages and low

duty cycles. Cycle-by-cycle current limit provides

protection against shorted outputs, input under-voltage

lockout, externally-adjustable soft-start, output under- and

over-voltage protection, and thermal shutdown provide safe

and smooth operation in all operating conditions. The

RT6238A/B is available in the UQFN-14L 2x3 (FC)

package, with exposed thermal pad.

^Advanced Constant On-Time (ACOT^TM) Control

^4.5V to 18V Input Voltage Range

^Adjustable Output Voltage from 0.7V to 8V

^8A Output Current

^35mΩ Internal High-Side N-MOSFET and 14mΩ

Internal Low-Side N-MOSFET

^Steady 500kHz Switching Frequency

^Up to 95% Efficiency

^Optimized for All Ceramic Capacitors

^Externally-Adjustable, Pre-Biased Compatible Soft-

Start

 Cycle-by-Cycle Current Limit

 Input Under-Voltage Lockout

 Output Over- and Under-Voltage Protection

 Power Good Output

 Thermal Shutdown

Applications

 Industrial and Commercial Low Power Systems

 Computer Peripherals

 LCDMonitors and TVs

 Green Electronics/Appliances

 Point of Load Regulation for High-Performance DSPs,

FPGAs, and ASICs

Simplified Application Circuit

RT6238A/B

VIN

OUT

BOOT

EN Signal

Power Good

PGOOD

PVCC

GND

is a registered trademark of Richtek Technology Corporation.

DS6238A/B-08 July 2017

www.richtek.com

12 3 4 5 6 7...23

下载PDF

与RT6238BLGQUF相关器件

型号	品牌	描述	获取价格	数据表
RT6239A	RICHTEK	ACOT Synchronous Step-Down Converter	获取价格
RT6239AHGQUF	RICHTEK	ACOT Synchronous Step-Down Converter	获取价格
RT6239ALGQUF	RICHTEK	ACOT Synchronous Step-Down Converter	获取价格
RT6239B	RICHTEK	暂无描述	获取价格
RT6239BHGQUF	RICHTEK	ACOT Synchronous Step-Down Converter	获取价格
RT6239BLGQUF	RICHTEK	ACOT Synchronous Step-Down Converter	获取价格