产品详情

致新 G546B2P11U 高压侧电源保护开关芯片

General Description 

The G546 are integrated dual channel 87mΩ (G546X1, G546X2) and 72mΩ (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 catastrophic switch failure caused by increasing power dissipation 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.

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 TDFN3X3-8 Package

■ UL Approved_#E232223

■ Nemko IEC 60950-1 CB/CCA_scheme Certification 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