Power Switch 0.5A 4-Pin DSBGA T/R

The TPS22903 and TPS22904 are ultra-small, low rON single channel load switches with controlled turnon. The device contains a P-channel MOSFET that can operate over an input voltage range of 1.1 V to 3.6 V. The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals. In TPS22904, a 85-O on-chip load resistor is added for output quick discharge when switch is turned off. TPS22903 and TPS22904 are available in a space-saving 4-terminal WCSP 0.4-mm pitch (YFP). The devices are characterized for operation over the free-air temperature range of –40°C to 85°C.

Input Voltage: 1.1 V to 3.6 V

Ultralow ON-State Resistance

• r_ON = 66 mO at V_IN = 3.6 V
• r_ON = 75 mO at V_IN = 2.5 V
• r_ON = 90 mO at V_IN = 1.8 V
• r_ON = 135 mO at V_IN = 1.2 V

500-mA Maximum Continuous Switch Current

Quiescent Current < 1 µA

Shutdown Current < 1 µA

Low Control Input Threshold Enables Use of 1.2-
V, 1.8-V, 2.5-V, and 3.3-V Logic

Controlled Slew Rate (5 µs Maximum at 3.6 V)

Quick Output Discharge (TPS22904 Only)

ESD Performance Tested Per JESD 22

• 2000-V Human Body Model
  (A114-B, Class II)
• 1000-V Charged-Device Model (C101)

4-Terminal Wafer Chip-Scale Package (WCSP)

• 0.8 mm × 0.8 mm,
  0.4-mm Pitch, 0.5-mm Height