The TPS22970 is a small, space-saving load switch with
controlled turn on to reduce inrush current. The device contains an N-channel MOSFET that can
operate over an input voltage range of 0.65 V to 3.6 V and pulsed switch currents up to 4 A. An
integrated charge pump biases the NMOS switch in order to achieve a minimum switch ON resistance
(rON). The switch is controlled by an on and off input (ON), which is
capable of interfacing directly with low-voltage control signals.
The TPS22970 is capable of thermal shutdown when the junction temperature is above the
threshold, turning the switch off. The switch turns on again when the junction temperature
stabilizes to a safe range.
The TPS22970 also offers an integrated 150-Ω onchip load resistor for quick output
discharge when the switch is turned off, which insures that the output is not left floating.
The TPS22970 has an internally controlled rise time in order to reduce inrush current.
The TPS22970 is available in an ultra-small, space saving 8-pin WCSP package and is characterized
for operation over the free-air temperature range of –40°C to +105°C.
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