TPS9103 POWER SUPPLY FOR GaAs POWER AMPLIFIERS

SLVS131A - OCTOBER 1995 - REVISED JULY 1996

features

Charge Pump Provides Negative Gate Bias for Depletion-Mode GaAs Power Amplifiers
Buffered Clock Output to Drive Additional External Charge Pump
135-m High-Side Switch Controls Supply Voltage to the GaAs Power Amplifier
Power-Good Circuitry Prevents High-Side Switch Turn-on Until Negative Gate Bias is Present
Charge Pump Can Be Driven From the Internal Oscillator or An External Clock
10-uA Maximum Standby Current
Low-Profile (1.2-mm Max Height), 20-Pin TSSOP Package

description

The TPS9103 is a highly integrated power supply for depletion-mode GaAs power amplifiers (PA) in cellular handsets and other wireless communications equipment. Functional integration and low-profile packaging combine to minimize circuit-board area and component height requirements. The device includes: a p-channel MOSFET configured as a high-side switch to control the application of power to the PA; a driver for the high-side switch with a logic-compatible input; a charge pump to provide negative gate-bias voltage; and logic to prevent turn-on of the high-side switch until gate bias is present. The high-side switch has a typical on-state resistance of 135 m.

The TPS9103 is available in a 20-pin thin shrink small-outline package (TSSOP) or in chip form. Contact factory for die sales. The device operates over a junction temperature range of -25°C to 125°C.

Title: POWER SUPPLY FOR GAAS POWER AMPLIFIERS
Product Family: POWER MANAGEMENT
Device Functionality: POWER MANAGEMENT

View the complete PDF datasheet: slvs131a.pdf (325 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:TPS9103

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