TPS9103

POWER SUPPLY FOR GaAs POWER AMPLIFIERS

SLVS131A – OCTOBER 1995 – REVISED JULY 1996

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POST OFFICE BOX 655303

for Depletion-Mode GaAs Power Amplifiers

External Charge Pump

Voltage to the GaAs Power Amplifier

Switch Turn-on Until Negative Gate Bias is

Present

Internal Oscillator or An External Clock

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

Ω.

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.

AVAILABLE OPTIONS

PACKAGED DEVICE

CHIP FORM

TA

TSS0P

(PW)

CHIP FORM

(Y)

–25

°C to 85°C

TPS9103PWLE

TPS9103Y

The PW package is only available left-end taped and reeled

(indicated by the LE suffix on the device type).

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.

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20

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GATE_BIAS

C1–

C1+

BATT_IN

BATT_IN

BATT_IN

PGP

PG

GND

CLK

BCLK

GND

BATT_OUT

BATT_OUT

BATT_OUT

SW_EN

OSC_EN

EN

PW PACKAGE

(TOP VIEW)

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.

Copyright

© 1996, Texas Instruments Incorporated