 Features
 57 mΩ (typ) high-side MOSFET
 2.31 A continuous load current (max)
 ±10% current-limit accuracy at 1 A (typ)
 Adjustable current limit: 0.2 A ~ 2.59 A (typ)
 Operating range: 2.7 V to 5.5 V
 36 μA (typ) quiescent current
 2 μs fast overcurrent response (typ)
 Reverse input-output voltage protection
 Quick output discharge:
– DIO75530H: available, EN high
– DIO75530NH: not available, EN high
– DIO75530L: available, EN low
− DIO75530NL: not available, EN low
 Applications
 USB ports & USB hubs
 Digital TVs
 Set-top boxes
 VOIP phones
 Short circuit protections
 Description
The DIO75530 is power distribution switch intended
for applications where precision current limiting is
required or heavy capacitive loads and short circuits
are encountered. The device provides up to 2.31 A of
continuous load current. When the voltage is higher
than the maximum voltage of 5%, the chip could be
maintained for at least 10 ms without damage.
A programmable current-limit threshold is offered
between 200 mA and 2.59 A (typ) via an external
resistor. Current-limit accuracy is ±10% at 1 A. The
power-switch rise and fall times are controlled to
minimize current surges during turning on/off. A
constant-current mode is used when the output load
exceeds the current-limit threshold.
The DIO75530 limits the output current to a safe level
by using a constant-current mode when the output
load exceeds the current-limit threshold. An internal
reverse voltage comparator disables the power
switch when the output voltage is driven higher than
the input to protect devices on the input side.