1 Features
• Input operating voltage range (VIN): 1 V to 5.5 V
• Maximum continuous current (IMAX): 2 A
• On-resistance (RON):
– 5 VIN = 80 mΩ (typical)
– 1.8 VIN = 120 mΩ (typical)
– 1 VIN = 220 mΩ (typical)
• Ultra-low power consumption:
– ON state (IQ): 0.5 μA (typical)
– OFF state (ISD): 10 nA (typical)
• Smart ON pin pulldown (RPD):
– ON ≥ VIH (ION): 10 nA (maximum)
– ON ≤ VIL (RPD): 750 kΩ (typical)
• Adjustable turn ON limits inrush current (tON):
– 5-V tON = 100 μs at 72 mV/μs (CT = open)
– 5-V tON = 4000 μs at 2.3 mV/μs (CT = 1000 pF)
• Adjustable output discharge and fall time:
– Optional QOD resistance ≥ 150 Ω (internal)
• Always-ON true Reverse Current Blocking (RCB):
– Activation current (IRCB): –500 mA (typical)
– Reverse leakage (IIN,RCB): –1 μA (maximum)

2 Applications
• Industrial systems
• Set top box
• Blood glucose meters
• Electronic point of sale

3 Description
The TPS22917x device is a small, single channel load
switch using a low leakage P-Channel MOSFET for
minimum power loss. Advanced gate control design
supports operating voltages as low as 1 V with
minimal increase in ON-Resistance and power loss.
The Rise and Fall times can be independently
adjusted with external components for system level
optimizations. The timing capacitor (CT) and turn
on time can be adjusted to manage inrush current
without adding unnecessary system delays. The
output discharge resistance (QOD) can be used to
adjust the output fall time. Connect the QOD pin
directly to the output for a fastest fall time or leave
it open for the slowest fall time.
The switch ON state is controlled by a digital input
that can interface directly with low-voltage control
signals. The TPS22917 uses active high enable logic,
while the TPS22917L uses active low. When power is
first applied, a Smart Pulldown is used to keep the ON
pin from floating until system sequencing is complete.
After the ON pin is deliberately driven high (≥VIH),
the Smart Pulldown (RPD) is disconnected to prevent
unnecessary power loss.
The TPS22917x device is available in a leaded
SOT-23 package (DBV) which allows visual inspection
of solder joints. The device is characterized for
operation over a temperature range of –40°C to
125°C.