Datasheet > RT5751B

RT5751B

更新时间： 2024-11-06 17:00:39

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
25页	1763K
描述
6V 1A, ACOT? Buck Converter

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RT5751B 数据手册

RT5751A/B

6V 1A, ACOT^®Buck Converter

General Description

Features

 Input Voltage Range from 2.5V to 6V

 Integrated 120m and 80m FETs

 1A Output Current, up to 95% Efficiency

 100% Duty Cycle for Lowest Dropout

 1% Internal Reference Voltage

The RT5751A/B is

simple, easy-to-use, 1A

synchronous step-down DC-DC converter with an input

supply voltage range from 2.5V to 6V. The device

build-in an accurate 0.6V reference voltage and

integrates low R_DS(ON)power MOSFETs to achieve

high efficiency in a WDFN-6L 2x2 package.

 1.5MHz Typical Switching Frequency

 Power Saving Mode for Light Loads (RT5751A)

 Low Quiescent Current: 25A (Typ.)

 Fast Advanced Constant On-Time (ACOT^®)

Control

The RT5751A/B adopts Advanced Constant On-Time

(ACOT^®) control architecture to provide an ultrafast

transient response with few external components and

to operate in nearly constant switching frequency over

the line, load, and output voltage range. The RT5751A

operate in automatic PSM that maintain high efficiency

during light load operation. The RT5751B operate in

Forced PWM that help to meet tight voltage regulation

accuracy requirements.

 Internal Soft Startup (0.6ms)

 Enable Control Input

 Power Good Indicator

 Both FETs Over-Current Protection

 Negative Over-Current Protection (RT5751B)

 Input Under-Voltage Lockout Protection

 Hiccup-Mode Output Under-Voltage Protection

 Over-Temperature Protection

The RT5751A/B senses both FETs current for a robust

over-current

protection. The

device features

cycle-by-cycle current limit protection and prevent the

device from the catastrophic damage in output short

circuit, over current or inductor saturation. A built-in

soft-start function prevents inrush current during

start-up. The device also includes input under-voltage

lockout, output under-voltage protection, and

over-temperature protection to provide safe and

smooth operation in all operating conditions.

 RoHS Compliant and Halogen Free

Applications

 Mobile Phones and Handheld Devices

 STB, Cable Modem, and xDSL Platforms

 WLAN ASIC Power / Storage (SSD and HDD)

 General Purpose for POL LV Buck Converter

Simplified Application Circuit

RT5751A/B

VIN

OUT

Enable

FB1

GND

FB2

is a registered trademark of Richtek Technology Corporation.

DS5751A/B-00 May 2020

www.richtek.com

12 3 4 5 6 7...25

中文翻译

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与RT5751B相关器件

型号	品牌	获取价格	描述	数据表
RT5751C	RICHTEK	获取价格	6V 1.5A, ACOT? Buck Converter
RT5751D	RICHTEK	获取价格	6V 1.5A, ACOT? Buck Converter
RT5752A	RICHTEK	获取价格	2A, 1.2MHz, 6V Synchronous Step-Down Converter inTSOT-23-5/TSOT-23-6 and WDFN-6L 2x2
RT5752B	RICHTEK	获取价格	2A, 1.2MHz, 6V Synchronous Step-Down Converter inTSOT-23-5/TSOT-23-6 and WDFN-6L 2x2
RT5753A	RICHTEK	获取价格	3A, 1.2MHz, 6V Synchronous Step-Down Converter In WDFN-8L 2x2
RT5753B	RICHTEK	获取价格	3A, 1.2MHz, 6V Synchronous Step-Down Converter In WDFN-8L 2x2
RT5753C	RICHTEK	获取价格	3A, 1.2MHz, 6V Synchronous Step-Down Converter In WDFN-8L 2x2
RT5753D	RICHTEK	获取价格	3A, 1.2MHz, 6V Synchronous Step-Down Converter In WDFN-8L 2x2
RT5753EL	RICHTEK	获取价格	3A, 1.2MHz, 6V Synchronous Step-Down Converter In WDFN-8L 2x2
RT5753FL	RICHTEK	获取价格	3A, 1.2MHz, 6V Synchronous Step-Down Converter In WDFN-8L 2x2

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