1 Features
1• Low-Input Voltage: 1.0 V to 3.6 V
• Ultra-Low ON-State Resistance
– rON = 90 mΩ at VIN = 3.6 V
– rON = 100 mΩ at VIN = 2.5 V
– rON = 114 mΩ at VIN = 1.8 V
– rON = 172 mΩ at VIN = 1.2 V
• 500-mA Maximum Continuous Switch Current
• Ultra-Low Quiescent Current: 82 nA at 1.8 V
• Ultra-Low Shutdown Current: 44 nA at 1.8 V
• Low Control Input Thresholds Enable Use of 1.2-
V/1.8-V/2.5-V/3.3-V Logic
• Controlled Slew Rate to Avoid Inrush Current:
220 μs tr
• ESD Performance Tested Per JESD 22
– 2000-V Human Body Model low(
A114-B, Class II)
– 1000-V Charged-Device Model (C101)
• Four-Terminal Wafer-Chip-Scale Package
(WCSP)
– 0.9 mm × 0.9 mm,
0.5-mm Pitch, 0.5-mm Height

2 Applications
• Personal Digital Assistants (PDAs)
• Cellular Phones
• GPS Devices
• MP3 Players
• Digital Cameras
• Peripheral Ports
• Portable Instrumentation
• RF Modules

3 Description
TPS22906 device is an ultra-small, low ON-state
resistance (rON) load switch with controlled turn on.
The device contains a P-channel MOSFET that
operates over an input voltage range of 1.0 V to 3.6
V. The switch is controlled by an on/off input (ON),
which is capable of interfacing directly with low(
voltage control signals. A 120-Ω on-chip load resistor is added for output quick discharge when the switch
is turned off. TPS22906 is available in a space-saving
4-terminal WCSP with 0.5-mm pitch (YZV). The
device is characterized for operation over the free-air
temperature range of –40°C to 85°C.