CELLULAR SUBSCRIBER TERMINAL POWER SUPPLY/AUDIO SYSTEM

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 3.3 V or 3 V at 100 mA each, a charge-pump driver, two power Amplifiers for a speaker and a ringer, a low-noise Microphone Amplifier and Logic that includes a 250-ms reset, on/off control, and processor Interface Regulators A and B and the charge-pump driver are disabled until Regulator L (logic regulator) reaches the rated voltage and RESET is Logic high. Regulators A and B, the charge-pump driver, and the Amplifiers have separate enables allowing circuitry to be powered up or down as necessary to conserve battery power. Each of the Amplifiers has a depop circuit to prevent objectionable noise when the IC is powered up or when the Amplifiers are enabled. Both the speaker Amplifier and the ringer Amplifier are designed to supply 2 V peak-to-peak into 32 or into a 90-nF piezoelectric speaker. The Microphone Amplifier is a low-noise high-gain (AV=100) circuit capable of supplying 3 V peak-to-peak into a 10-k load. The TPS9104 operates over a free-air temperature range of 40C to 85C and is supplied in a 48-pin TQFP package By Texas Instruments
TPS9104 's PackagesTPS9104 's pdf datasheet
TPS9104IPT
TPS9104Y




TPS9104 Pinout, Pinouts
TPS9104 pinout,Pin out
This is one package pinout of TPS9104,If you need more pinouts please download TPS9104's pdf datasheet.

TPS9104 Application circuits
TPS9104 circuits
This is one application circuit of TPS9104,If you need more circuits,please download TPS9104's pdf datasheet.


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