TPS9111 Datasheet, PDF (1/23 Pages) Texas Instruments – CELLULAR SUBSCRIBER TERMINAL POWER SUPPLY

D Complete Power Supply for Cellular
Handsets
D Three Low-Dropout Regulators (LDOs) with
100-mV Dropout
D Less Than 1 µA Supply Current in
Shutdown Typ
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
Pump
D 1.185-V Reference
D 28-Pin TSSOP Package
description
TPS9111
CELLULAR SUBSCRIBER TERMINAL
POWER SUPPLY
SLVS134A – NOVEMBER 1996 – REVISED APRIL 1998
PW PACKAGE
(TOP VIEW)
RESET 1
VCP 2
GND_CP 3
CP ⁴
EN_CP ⁵
GND ⁶
EN ⁷
ON ⁸
VA ⁹
CA ¹⁰
PA ¹¹
GND ¹²
EN_A ¹³
V_CC ¹⁴
28 V_CC
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 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
package.
AVAILABLE OPTIONS
TA
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.
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Copyright © 1998, Texas Instruments Incorporated
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