TPS9104 Datasheet (Texas Instruments) - CELLULAR SUBSCRIBER TERMINAL POWER SUPPLY/AUDIO SYSTEM

TPS9104, CELLULAR SUBSCRIBER TERMINAL POWER SUPPLY/AUDIO SYSTEM

NC * No internal connection The TPS9104 incorporates a complete power supply and audio power system for a cellular subscriber terminal that uses battery packs with three or four NiMH/NiCd cells or a single lithium-ion cell.

The device includes three low-dropout linear regulators rated for 3.

D Complete Power-Supply/Audio System For Cellular Handsets D Three Low-Dropout Regulators (LDOs) with 100-mV Dropout D Speaker and Ringer Power Amplifiers Drive 32-Ω Dynamic Speakers or Piezo Devices D Low-Noise Microphone Amplifier D Depop Protection For All Amplifiers D Less Than 1 µA Supply Current in Shutdown, Typical D 250-ms Microprocessor Reset Output D 10-mA Charge-Pump Driver Configurable For Inverted or Doubled Output D Separate Enables for LDOs, Amplifiers, and Charge Pump D 1.185-V R