Datasheet > RT9742B

RT9742B

更新时间： 2024-09-17 16:37:07

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
19页	298K
描述
70mΩ/55mΩ, 3A/2.5A/2A/1.5A/1A/0.5A High-Side Power Switches with Flag

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数据手册

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RT9742B 数据手册

RT9742

70mΩ/55mΩ, 3A/2.5A/2A/1.5A/1A/0.5A High-Side Power

Switches with Flag

General Description

Features

^70mΩ/55mΩ (typ.) N-MOSFET Switch

^Operating Range : 2.7V to 6V

^Reverse Blocking Current

^Under Voltage Lockout

The RT9742 is a cost-effective, low-voltage, single

N-MOSFET high-side Power Switch IC for USB application.

Low switch-on resistance and low supply current are

realized in this IC.

^Deglitched Fault Report (FLG)

^Thermal Protection with Fold-back

^Over Current Protection

The RT9742 integrates an over-current protection circuit,

a short fold back circuit, a thermal shutdown circuit and

an under-voltage lockout circuit for overall protection.

Besides, a flag output is available to indicate fault

conditions to the local USB controller. Furthermore, the

chip also integrates an embedded delay function to prevent

miss-operation from happening due to inrush-current. The

RT9742 is an ideal solution for USB power supply and

can support flexible applications since it is available in

TSOT-23-5, TSOT-23-5 (FC) and SOT-23-3 package.

^Short Circuit Protection

^UL Approved−E219878

^Nemko Approved-NO109777

Applications

 USB Peripherals

 Notebook PCs

Pin Configuration

(TOP VIEW)

VIN

EN/EN

VOUT

VIN

VOUT

GND

VIN

VOUT

VOUT GND VIN

VOUT GND FLG

EN GND FLG

TSOT-23-5 /

TSOT-23-5 (FC)

TSOT-23-5

For RT9742M/V only

TSOT-23-5

For RT9742U only

SOT-23-3

Simplified Application Circuit

USB Controller

Over-Current

Supply Voltage

2.7V to 6V

VIN

FLG

RT9742

VOUT

Chip Enable

BUS

EN/EN

D+

OUT

GND

D-

GND

Data

is a registered trademark of Richtek Technology Corporation.

DS9742-10 January 2020

www.richtek.com

12 3 4 5 6 7...19

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与RT9742B相关器件

型号	品牌	获取价格	描述	数据表
RT9742C	RICHTEK	获取价格	暂无描述
RT9742D	RICHTEK	获取价格	暂无描述
RT9742E	RICHTEK	获取价格	暂无描述
RT9742F	RICHTEK	获取价格	70mΩ/55mΩ, 3A/2.5A/2A/1.5A/1A/0.5A High-Side
RT9742G	RICHTEK	获取价格	暂无描述
RT9742H	RICHTEK	获取价格	暂无描述
RT9742J	RICHTEK	获取价格	70mΩ/55mΩ, 3A/2.5A/2A/1.5A/1A/0.5A High-Side
RT9742K	RICHTEK	获取价格	暂无描述
RT9742L	RICHTEK	获取价格	暂无描述
RT9742M	RICHTEK	获取价格	70mΩ/55mΩ, 3A/2.5A/2A/1.5A/1A/0.5A High-Side