EVB_RT9742AGJ5F: 3A, 2.7 ~ 6V, High-Side Switch, 55mOhm, w/ Flag

Summary

The EVB_RT9742AGJ5F is a cost-effective, low-voltage; single N-MOSFET high-side Power Switch IC reference design for USB application. The RT9742A 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 RT9742A is an ideal solution for USB power supply and can support flexible applications since it is available in TSOT-23-5 (FC) package.

Product Features

Reverse Blocking Current
Thermal Protection with Fold-back
UL Approved-E219878
Nemko Approved-NO87949

Specifications

Manufacturer	Richtek USA Inc.
Category	Power Management
Sub-Category	Load or Power Distribution Switches
Eval Board Part Number	EVB_RT9742AGJ5F-ND
Eval Board Supplier	Richtek USA Inc.
Eval Board	Normally In Stock
Current Out	3 A
Voltage In	2.7 ~ 6 V
Features	Fault Indication Over Current Protection Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out
On Resistance (Typ) @ Vin	55 mΩ @ 5 V
Standby Current [Maximum]	1 µA
Standby Current [Typical]	100 nA
Quiescent Current [Maximum]	40 µA
Power Dissipation (Max)	790 mW
Quiescent Current [Typical]	30 µA
Component Count + Extras	5 + 11
Design Author	Richtek USA Inc.
Main I.C. Base Part	RT9742
Application / Target Market	Handheld games Tablets USB Powered Devices Wearable Devices White Goods
Date Created By Author	2018-06
Date Added To Library	2022-06