Power Switch 0.5A 4-Pin DSBGA T/R

The TPS22901, TPS22902, and TPS22902B are small, low ON-resistance (rON) load switches with a controlled turnon. These devices contain 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 can interface directly with low-voltage control signals. In the TPS22902 and TPS22902B, an 88-O on-chip load resistor is added for output quick discharge when the switch is turned off.The TPS22901, TPS22902, and TPS22902B are available in a space-saving 4-pin DSBGA (YFP) with 0.4-mm pitch. These devices are characterized for operation over the free-air temperature range of –40°C to 85°C.

Integrated P-Channel Load Switch

Low Input Voltage: 1 V to 3.6 V

ON-Resistance (Typical Values)

• r_ON = 78 mO at V_IN = 3.6 V
• r_ON = 93 mO at V_IN = 2.5 V
• r_ON = 109 mO at V_IN = 1.8 V
• r_ON = 146 mO at V_IN = 1.2 V

500 mA Maximum Continuous Switch Current

Quiescent Current: 82 nA at 1.8 V

Shutdown Current: 44 nA at 1.8 V

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

• t_r = 40 µs at V_IN = 1.8 V (TPS22901/2)
• t_r = 220 µs at V_IN = 1.8 V (TPS22902B)

Quick Output Discharge (TPS22902/2B)

ESD Performance Tested Per JESD 22

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

Four-Pin Wafer-Chip-Scale DSBGA Package

• 0.8-mm × 0.8-mm, 0.4-mm Pitch,
  0.5-mm Height (YFP)