Texas Instruments TPS2114PWRG4

Description
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
(3.10 mm x 4.50 mm) TSSOP-8 package
Two-input, one-output power multiplexer
Low rps(on) switches:
84 mΩ Typ (TPS2115)
120 mΩ Typ (TPS2114)
Reverse and cross-conduction blocking
Wide operating voltage range: 2.8 V to 5.5 V
Low standby current: 0.5 μA Typical
Low operating current: 55 μA Typical
Adjustable current limit
Controlled output voltage transition times, limits inrush current and minimizes output voltage hold-up capacitance
CMOS and TTL compatible control inputs
Manual and auto-switching operating modes
Thermal shutdown

Applications
Modems
PCs
PDAs
Digital cameras
Cell phones
Digital radios
MP3 players