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1 Features

1? Integrated P-Channel Load Switch

? Input Voltage: 0.9 V to 3.6 V

? ON-Resistance (Typical Values)

– rON = 14 mΩ at VIN = 3.6 V

– rON = 20 mΩ at VIN = 2.5 V

– rON = 33 mΩ at VIN = 1.8 V

– rON = 67 mΩ at VIN = 1.2 V

– rON = 116 mΩ at VIN = 1.0 V ? 2-A Maximum Continuous Switch Current

? Quiescent Current:

– Typical 78 nA at 1.8 V

? Shutdown Current:

– Typical 35 nA at 1.8 V

? Low Threshold Control Input Enable the use of

1.2 V, 1.8 V, 2.5 V, or 3.3 V Logic

? Controlled Slew Rate to Avoid Inrush Currents

– t R = 30 μs at VIN = 1.8 V (TPS22921/2)

– tR = 200 μs at VIN = 1.8 V (TPS22922B)

? Quick Output Discharge (TPS22922/2B)

? ESD Performance Tested Per JESD 22

– 3000-V Human Body Model

(A114-B, Class II)

– 1000-V Charged-Device Model (C101)

? Six Terminal Wafer-Chip-Scale DSBGA Package

(nominal dimensions shown - see Mechanical,

Packaging, and Orderable Information for details)

– 0.9-mm × 1.4-mm, 0.5-mm Pitch,

0.5 mm Height (YZP)

– 0.9-mm × 1.4-mm, 0.5-mm Pitch,

0.625 mm Height (YZT)

– 0.8-mm × 1.2-mm, 0.4-mm Pitch,

0.5-mm Height (YFP)

2 Applications

? PDAs

? Cell Phones

? GPS Devices

? MP3 Players

? Peripheral Ports

? Portable Media Players

? RF Modules

3 Description

TPS22921, TPS22922, and TPS22922B are small, low rON load switches with controlled turnon. The

TPS22921/2/2B contains a P-channel MOSFET that

can operate over an input voltage range of 0.9 V to

3.6 V. The switch is controlled by an on/off input (ON), which can interface directly with low-voltage

control signals. In TPS22922 and in TPS22922B, a

65-Ω on-chip load resistor is added for output quick

discharge when the switch is turned off. The rise time

(slew rate) of the device is internally controlled in

order to avoid inrush current: TPS22921 and

TPS22922 feature a 30-μs rise time, whereas

TPS22922B is 200 μs.

TPS22921, TPS22922, and TPS22922B feature low

quiescent and shutdown currents and are available in

space-saving 6-pin wafer-chip-scale packages

DSBGA (WCSP: YZP and YZT with 0.5-mm pitch and YFP with 0.4-mm pitch) which make them ideal for

portable electronics. The devices are characterized

for operation over the free-air temperature range of

–40°C to 85°C.