1 Features
1• Integrated P-Channel Load Switch
• Input Voltage: 1 V to 3.6 V
• 1 A Maximum Continuous Switch Current
• On-Resistance (Typical Values)
– RON = 28 mΩ at VIN = 3.6 V
– RON = 33 mΩ at VIN = 2.5 V
– RON = 42 mΩ at VIN = 1.8 V
– RON = 70 mΩ at VIN = 1.2 V
• Maximum Quiescent Current = 1 μA
• Maximum Shutdown Current = 1 μA
• Low Control Input Thresholds Enable Use of 1.2-
V, 1.8-V, 2.5-V, and 3.3-V Logic
• Controlled Slew Rate to Avoid Inrush Currents
– tR = 105 μs at VIN = 3.6V
• Four Terminal Wafer-Chip-Scale Package
(WCSP)
– Nominal Dimensions - See Addendum for
Details
– 0.9 mm × 0.9 mm, 0.5-mm Pitch, 0.6-mm
Height
• Quick Output Discharge (QOD)

2 Applications
• Battery Powered Equipment
• Portable Industrial Equipment
• Portable Medical Equipment
• Portable Media Players
• Point of Sale Terminal
• GPS Devices
• Digital Cameras
• Portable Instrumentation
• Smartphones and Tablets

3 Description
The TPS22908 is a small, low RON load switch with
controlled turn on. The device contains a P-channel
MOSFET that operates over an input voltage range of
1 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.
The TPS22908 is available in a space-saving 4-
terminal WCSP with 0.5 mm pitch (YZT). The device
is characterized for operation over the free-air temperature range of –40°C to 85°C.