TPS2112

双路输入/单路输出自动切换功率多路复用器，具有自动 切换、可调节 电流限制、可调节 电压阈值和切换状态

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.

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

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84 m Typ TPS2113

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120 m Typ

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Reverse and Cross-Conduction Blocking

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

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Low Standby Current . . . . 0.5-µA Typ

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Low Operating Current . . . . 55-µA Typ

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Adjustable Current Limit

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

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CMOS and TTL Compatible Control Inputs

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Auto-Switching Operating Mode

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Thermal Shutdown

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Available in a TSSOP-8 Package

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APPLICA ONS

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PCs

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PDAs

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Digital Cameras

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Modems

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Cell phones

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Digital Radios

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MP3 Players