TPS22921YZTR

低输入电压，超低rON的负载开关 LOW INPUT VOLTAGE, ULTRA-LOW rON LOAD SWITCHES

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.

Features

• 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

   – tR = 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

Applications

• PDAs

• Cell Phones

• GPS Devices

• MP3 Players

• Peripheral Ports

• Portable Media Players

• RF Modules