DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 1

Technical content

Features

„ 87mΩ RDS(ON) (G546X1, G546X2) and 72mΩ RDS(ON) (G546X3, G546X4) „ Available with 5 Versions of Current Limits with Foldback „ Operating Range:2.7V to 5.5V „ 400µS Typical Rise Time „ Under voltage Lockout „ 65µA Quiescent Supply Current „ 1µA Maximum Shutdown Supply Current „ Logic Level Enable Pin, Available with Active-High or Active-Low Version „ No Reverse Current when Power Off „ Deglitched Open-Drain Over-Current Flag Output ( OC ) „ SOP-8 Package,MSOP-8 , MSOP-8 (FD) and „ UL Approved_#E232223 „ Nemko IEC 60950-1 CB/CCA_scheme Certifi- cation Report #67291

Applications

„ High-Side Power Protection Switch „ USB Power Management „ USB Host and Self-Powered Bubs „ USB Bus-Powered Hubs „ Hot Plug-In Power Supplies „ Battery-Charger Circuits General Description The G546 are integrated dual channel 87m Ω (G546X1, G546X2) and 72m Ω (G546X3, G546X4) power switchs for self-powered and bus-powered Universal Serial Bus (USB) applications. Several Protection features include current limiting with foldback, and thermal shutdown to prevent catas- trophic switch failure caused by increasing power dis- sipation when continuous heavy loads or short circuit occurs. And a built-in charge pump is used to drive the N-channel MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. OC is open-drain output report over-current or over-temperature event and has typical 9ms deglitch timeout period. Pin Configuration Typical Application Circuit R UL Recognized Component R UL Recognized Component Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. 22µF Load OC1 EN1 (EN1) OC2 EN2 (EN2) 22µF Load 22µF Power Supply 2.7V to 5.5V OUT1 OUT2 IN SOP-8/MSOP-8 G546 OC1

7 OUT1

EN1(EN1) IN EN2 (EN2) GND EN1(EN1) IN EN2 (EN2) *: 22µFx2ea of input capacitor is to prevent input voltage drop at output short. If the PCB trace of power rail to IN is long, larger input capacitor is necessary. G546 MSOP-8 (FD) G546 Thermal Pad GND EN1(EN1) IN EN2 (EN2) OC1 OUT1 OUT2 OC2 22µF* Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. 22µF Load OC1 EN1 (EN1) OC2 EN2 (EN2) 22µF Load 22µF Power Supply 2.7V to 5.5V OUT1 OUT2 IN SOP-8/MSOP-8 G546 OC1 EN1(EN1) IN EN2 (EN2) GND EN1(EN1) IN EN2 (EN2) *: 22µFx2ea of input capacitor is to prevent input voltage drop at output short. If the PCB trace of power rail to IN is long, larger input capacitor is necessary. G546 MSOP-8 (FD) G546 Thermal Pad GND EN1(EN1) IN EN2 (EN2) OC1 OUT1 OUT2 OC2 22µF*