Datasheet > RT6239AHGQUF

RT6239AHGQUF

更新时间： 2024-11-13 01:04:31

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
22页	463K
描述
ACOT Synchronous Step-Down Converter

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中文翻译

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RT6239AHGQUF 数据手册

RT6239A/B

9A, 18V, 500kHz, ACOT^TMSynchronous Step-Down Converter

General Description

Features

^Fast Transient Response

The RT6239A/B is a high-performance 500kHz, 9Astep-

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 RT6239A/B is stable with and optimized

for ceramic output capacitors. With internal 30mΩ switches

and 12mΩ synchronous rectifiers, the RT6239A/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

RT6239A/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

^9A Output Current

^30mΩ Internal High-Side N-MOSFET and 12mΩ

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

RT6239A/B

VIN

OUT

BOOT

EN Signal

Power Good

PGOOD

PVCC

GND

is a registered trademark of Richtek Technology Corporation.

DS6239A/B-04 May 2016

www.richtek.com

12 3 4 5 6 7...22

中文翻译

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与RT6239AHGQUF相关器件

型号	品牌	获取价格	描述	数据表
RT6239ALGQUF	RICHTEK	获取价格	ACOT Synchronous Step-Down Converter
RT6239B	RICHTEK	获取价格	暂无描述
RT6239BHGQUF	RICHTEK	获取价格	ACOT Synchronous Step-Down Converter
RT6239BLGQUF	RICHTEK	获取价格	ACOT Synchronous Step-Down Converter
RT6242A	RICHTEK	获取价格	暂无描述
RT6242B	RICHTEK	获取价格	暂无描述
RT6243A	RICHTEK	获取价格	暂无描述
RT6243B	RICHTEK	获取价格	12A, 17V, High Efficiency Synchronous Step-Down Converter
RT6245A	RICHTEK	获取价格	14A, 17V, 400kHz/800kHz/1200kHz Synchronous Step-Down Converter with VID Control
RT6245B	RICHTEK	获取价格	14A, 17V, 400kHz/800kHz/1200kHz Synchronous Step-Down Converter with VID Control

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