TPS9110 CELLULAR SUBSCRIBER TERMINAL POWER SUPPLY

SLVS164 - AUGUST 1997

features

Complete Power Supply for Cellular Handsets
Three Low-Dropout Regulators (LDOs) with 100-mV Dropout
Less Than 1 uA Supply Current in Shutdown Typ
250-ms Microprocessor Reset Output
10-mA Charge-Pump Driver Configurable For Inverted or Doubled Output
Separate Enables for LDOs and Charge Pump
1.185-V Reference
28-Pin TSSOP Package

description

The TPS9110 incorporates a complete power supply 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, and logic that includes a 250-ms reset, on/off control, and processor interface. Regulators A and B and the charge-pump driver have separate enables allowing circuitry to be powered up or down as necessary to conserve battery power. Regulators VL, VA, and VB, and the charge pump driver are active as soon as UVLO and OTP are valid and ON\ is toggled low.

The TPS9110 operates over a free-air temperature range of -40°C to 85°C and is supplied in a 28-pin TSSOP package

Title: CELLULAR SUBSCRIBER TERMINAL POWER SUPPLY
Product Family: RF FOR PERSONAL COMMUNICATIONS
Device Functionality: CELLULAR SUBSCRIBER TERMINAL POWER-SUPPLY SYSTEM
Orderable Devices: TPS9110IPWLE

View the complete PDF datasheet: slvs164.pdf (365 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:TPS9110

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