TPS9111

Features:

· Complete Power Supply for Cellular Handsets
· Three Low-Dropout Regulators (LDOs) with 100-mV Dropout
·Less Than 1 mA 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

Pinout




Specifications

Supply voltage range, VCC, VCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 12 V
Input voltage range at OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V
Input voltage range at PL, PA, PB, EN, EN_A, EN_B,
ON, ON_REM, EN_CP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to VCC
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See dissipation rating tables
Peak output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to 85°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Lead Temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C


† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

‡ All voltages are with respect to GND.


Description

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 TPS9111 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 of TPS9111 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.