General description
The NX5P2090 is an advanced power switch for USB OTG applications. It includes
under-voltage and over-voltage lockout, over-current, over-temperature, reverse bias and
in-rush current protection circuits. These are designed to automatically isolate a VBUS
OTG voltage source from a VBUS interface pin when a fault occurs. The device features
two power switch terminals, one input (VINT) and one output (VBUS); a current limit input
(ILIM) for defining the over-current and in-rush current limit; a voltage detect output
(VDET) to monitor the voltage level on VBUS; an open-drain fault output (FAULT) to
indicate when a fault condition has occurred and an enable input (EN) to control the state
of the switch. When EN is set LOW the device enters a low-power mode, disabling all
protection circuits except the under-voltage lockout. The low-power mode can be entered
at anytime unless the over temperature protection circuit has been triggered.
Designed for operation from 3 V to 5.5 V, it is used in power domain isolation applications
to protect from out of range operation. The enable input includes integrated logic level
translation making the device compatible with lower voltage processors and controllers.

Features and benefits
 Wide supply voltage range from 3 V to 5.5 V
 30 V tolerant on VBUS
 ISW maximum 2 A continuous current
 Very low ON resistance: 100 m (maximum) at a supply voltage of 4.0 V
 Low-power mode (ground current 20 A typical)
 1.8 V control logic
 Soft start turn-on slew rate
 Protection circuitry
 Over-temperature protection
 Over-current protection with low current output mode
 Reverse bias current/Back drive protection
 Over-voltage lockout
 Under-voltage lockout
 Analog voltage limited VBUS monitor path
 ESD protection:
 HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 2 kV
 IEC61000-4-2 contact discharge exceeds 8 kV for pins VBUS
 Specified from 40 C to +85 C

Applications
 USB OTG applications