CELLULAR SUBSCRIBER TERMINAL POWER SUPPLY
|Total Page||23 Pages|
|Features||Datasheet pdf D Complete Power Supply for Cellular Han dsets D Three Low-Dropout Regulators (L DOs) with 100-mV Dropout D Less Than 1 µA Supply Current in Shutdown Typ D 25 0-ms Microprocessor Reset Output D 10-m A Charge-Pump Driver Configurable For I nverted or Doubled Output D Separate En ables for LDOs and Charge Pump D 1.185- V Reference D 28-Pin TSSOP Package desc ription TPS9111 CELLULAR SUBSCRIBER TE RMINAL POWER SUPPLY SLVS134A – NOVEMB ER 1996 – REVISED APRIL 1998 PW PACK AGE (TOP VIEW) RESET VCP GND_CP CP EN_ CP GND EN ON VA CA PA GND EN_A VCC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 VCC 2 7 PL 26 GND 25 ON 24 CL 23 VL 22 REF 21 OFF 20 VB 19 CB 18 ON_REM 17 GND 16 EN _B 15 PB The TPS9111 incorporates a comp.|
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D Complete Power Supply for Cellular
D Three Low-Dropout Regulators (LDOs) with
D Less Than 1 µA Supply Current in
D 250-ms Microprocessor Reset Output
D 10-mA Charge-Pump Driver Configurable
For Inverted or Doubled Output
D Separate Enables for LDOs and Charge
D 1.185-V Reference
D 28-Pin TSSOP Package
CELLULAR SUBSCRIBER TERMINAL
SLVS134A – NOVEMBER 1996 – REVISED APRIL 1998
The TPS9111 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 are disabled until
regulator L (logic regulator) reaches the rated voltage and RESET is logic high. Regulators A and B and the
charge-pump driver also have separate enables allowing circuitry to be powered up or down as necessary to
conserve battery power.
The TPS9111 operates over a free-air temperature range of –40°C to 85°C and is supplied in a 28-pin TSSOP
– 40°C to 85°C
The PW package is only available left-end taped and reeled.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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