TPS9111 Datasheet | Texas Instruments

description CELLULAR SUBSCRIBER TERMINAL POWER SUPPLY SLVS134A - NOVEMBER 1996 - REVISED APRIL 1998 PW PACKAGE (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 27 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 plete power supply system for a cellular subscriber terminal that uses battery packs with three or four Ni MH/Ni Cd 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 m A 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 package. AVAILABLE OPTIONS PACKAGED DEVICE TSSOP (PW) CHIP FORM (Y) - 40°C to 85°C TPS9111IPWLE TPS9111Y 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. - POST OFFICE BOX 655303 DALLAS, TEXAS 75265 Copyright © 1998, Texas Instruments Incorporated 1 TPS9111 CELLULAR SUBSCRIBER TERMINAL POWER SUPPLY SLVS134A - NOVEMBER 1996 - REVISED APRIL 1998 functional block diagram EN REF EN_A EN_B...