Datasheet > RT9728BHGE

RT9728BHGE

更新时间： 2024-09-16 01:18:19

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
14页	227K
描述
Power Switch with Adjustable Current Limit

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RT9728BHGE 数据手册

RT9728B

120mΩ, 1.8A Power Switch with Adjustable Current Limit

General Description

Features

10% Current Limit Accuracy @ 1.3A

The RT9728B is a cost effective, low voltage, single

P-MOSFET power switch IC for USB application with a

adjustable current limit feature. Low switch-on resistance

(typ. 120mΩ) and low supply current (typ. 120μA) are

realized in this IC. The RT9728B can offer a adjustable

current limit threshold between 75mA and 1.8A (typ.) via

an external resistor. The 10% current limit accuracy can

be realized for all current limit settings. In addition, 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 mis-operation due to

high inrush current. The RT9728B is an ideal solution for

USB power supplies and can support flexible applications

since it is suitable for various current limit requirements.

It is available in the SOT-23-6 and WDFN-6L2x2 packages.

^zAdjustable Current Limit : 75mA to 1.8A (typ.)

^zMeets USB Current Limiting Requirements

^zOperating Voltage Range : 2.5V to 5.5V

^zReverse Input−Output Voltage Protection

^zBuilt-in Soft-Start

^z120mΩ P-MOSFET

^z120μA Supply Current

^zRoHS Compliant and Halogen Free

Ordering Information

RT9728B

Package Type

E : SOT-23-6

QW : WDFN-6L 2x2

Lead Plating System

G : Green (Halogen Free and Pb Free)

Applications

z USB Bus/Self Powered Hubs

H : Chip Enable High

L : Chip Enable Low

Note :

z USB Peripheral Ports

z ACPI PowerDistribution

Richtek products are :

z Battery Power Equipment

z 3G/3.5GData Card, Set-Top Boxes

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

` Suitable for use in SnPb or Pb-free soldering processes.

Simplified Application Circuit

VIN

VOUT

OUT

RT9728B

FAULT

ILIM

FAULT Signal

FAULT

EN/EN

Enable

GND

is a registered trademark of Richtek Technology Corporation.

DS9728B-00 August 2013

www.richtek.com

12 3 4 5 6 7...14

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