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Amplifiers/Converters??

TI power muxes exhibit <0.05V voltage drop

Posted: 14 Feb 2003 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? tps211x? tps2110? tps2111? tps2112?

Texas Instruments Inc. has introduced the TPS211x family of power muxes that exhibits a voltage drop <0.05V at 300mA - compared to the 0.3V to 0.7V drop of typical two-diode "OR" connection implementation - and results to higher efficiency and longer battery life.

The power switches also enables seamless transition between two power sources, such as single-cell Li-ion battery and wall adapter, by controlling the output voltage transition times. They are designed for portable devices such as PDAs and mobile phones.

Available in an 8-pin TSSOPs, the two-input, one-output devices have two internal high-side power MOSFETs with on resistance ranging from 84 milliohms (TPS2111/3/5) to 120 milliohms (TPS2110/2/4).

The muxes operate from 2.8V to 5.5V and deliver up to 1A. They consume 55?A during operation and 0.5?A during standby. Features include manual switching, "autoswitching" mode, thermal protection, inrush current control, and cross-conduction and reverse-conduction blocking.





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