+ RT9742 70m/55m, 3A/2.5A/2A/1.5A/1A/0.5A High-Side Power Switches with Flag General Description Features 70m/55m (typ.) N-MOSFET Switch The RT9742 is a cost-effective, low-voltage, single Operating Range : 2.7V to 6V N-MOSFET high-side Power Switch IC for USB application. Reverse Blocking Current Low switch-on resistance and low supply current are Under Voltage Lockout realized in this IC. Deglitched Fault Report (FLG) The RT9742 integrates an over-current protection circuit, Thermal Protection with Fold-back a short fold back circuit, a thermal shutdown circuit and Over Current Protection an under-voltage lockout circuit for overall protection. Short Circuit Protection Besides, a flag output is available to indicate fault UL ApprovedE219878 conditions to the local USB controller. Furthermore, the Nemko Approved-NO87949 chip also integrates an embedded delay function to prevent miss-operation from happening due to inrush-current. The Applications RT9742 is an ideal solution for USB power supply and USB Peripherals can support flexible applications since it is available in Notebook PCs TSOT-23-5, TSOT-23-5 (FC) and SOT-23-3 package. Pin Configurations (TOP VIEW) VIN EN/EN VOUT EN GND 5 4 5 4 3 23 23 2 VOUT GND FLG VIN VOUT GND VIN VOUT TSOT-23-5 SOT-23-3 TSOT-23-5 / TSOT-23-5 (FC) (For RT9742M Only) Simplified Application Circuit USB Controller Supply Voltage Over-Current VIN FLG 2.7V to 6V C RT9742 IN V Chip Enable VOUT BUS EN/EN D+ C OUT GND D- GND Data Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9742-04 March 2016 www.richtek.com 1RT9742 Ordering and Marking Information EN Function Package Product Discharge Version Current Active Active Internal TSOT-23-5 Code Function TSOT-23-5 SOT-23-3 High Low Pull High (FC) RT9742AGJ5F 07= 3A Yes V V RT9742BGJ5F 06= 3A Yes V V RT9742ANGJ5F 0F= 3A No V V RT9742BNGJ5F 0E= 3A No V V RT9742CGJ5F 05= 2A Yes V V RT9742DGJ5F 04= 2A Yes V V RT9742CNGJ5F 0D= 2A No V V RT9742DNGJ5F 0C= 2A No V V RT9742CGJ5 0K= 2A Yes V V RT9742DGJ5 0J= 2A Yes V V RT9742CNGJ5 11= 2A No V V RT9742DNGJ5 10= 2A No V V RT9742JNGV 6A= 2A No V V RT9742EGJ5F 03= 1.5A Yes V V RT9742FGJ5F 02= 1.5A Yes V V RT9742ENGJ5F 0B= 1.5A No V V RT9742FNGJ5F 0A= 1.5A No V V RT9742EGJ5 0H= 1.5A Yes V V RT9742FGJ5 0G= 1.5A Yes V V RT9742ENGJ5 0Z= 1.5A No V V RT9742FNGJ5 0Y= 1.5A No V V RT9742KNGV 69= 1.5A No V V RT9742GGJ5F 01= 1A Yes V V RT9742HGJ5F 00= 1A Yes V V RT9742GNGJ5F 09= 1A No V V RT9742HNGJ5F 08= 1A No V V RT9742GGJ5 0F= 1A Yes V V RT9742HGJ5 0E= 1A Yes V V RT9742GNGJ5 0X= 1A No V V RT9742HNGJ5 0W= 1A No V V RT9742LNGV 68= 1A No V V RT9742MGJ5 14= 1.5A Yes V V RT9742MNGJ5 15= 1.5A No V V RT9742NGJ5F 43= 2.5A Yes V V RT9742PGJ5F DD= 2.5A Yes V V RT9742NNGJ5F 42= 2.5A No V V RT9742PNGJ5F CC= 2.5A No V V RT9742QGJ5 47= 0.5A Yes V V RT9742RGJ5 45= 0.5A Yes V V RT9742QNGJ5 46= 0.5A No V V RT9742RNGJ5 44= 0.5A No V V RT9742SNGV 6V= 0.5A No V V Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS9742-04 March 2016 2