TPS2112PWG4

自动开关MUX AUTOSWITCHING POWER MUX

DESCRIPON

The TPS211x family of power multiplexers enables seamless transition between two power supplies, such as a battery and a wall adapter, each operating at 2.8–5.5 V and delivering up to 1 A. The TPS211x family includes extensive protection circuitry, including user-programmable current limiting, thermal protection, inrush current control, seamless supply transition, cross-conduction blocking, and reverse-conduction blocking. These features greatly simplify designing power multiplexer applications.

FEATURES

● Two-Input, One-Output Power Multiplexer With Low rDSon Switches:

   – 84 mΩ Typ TPS2113

   – 120 mΩ Typ TPS2112

● Reverse and Cross-Conduction Blocking

● Wide Operating Voltage Range . . . .2.8 V to 5.5 V

● Low Standby Current . . . . 0.5-µA Typ

● Low Operating Current . . . . 55-µA Typ

● Adjustable Current Limit

● Controlled Output Voltage Transition Times, Limits Inrush Current and Minimizes Output Voltage Hold-Up Capacitance

● CMOS and TTL Compatible Control Inputs

● Auto-Switching Operating Mode

● Thermal Shutdown

● Available in a TSSOP-8 Package

APPLICATIONS

● PCs

● PDAs

● Digital Cameras

● Modems

● Cell phones

● Digital Radios

● MP3 Players