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Logic-Controlled High-Side Power Switch
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The NX5P2190 is an advanced power switch with adjustable current limit. It includes under-voltage and over-voltage lockout, over-current, over-temperature, reverse bias and in-rush current protection circuits. These circuits are designed to isolate a voltage source from a VBUS interface pin automatically when a fault occurs. The device features two power switch terminals, one input (VINT) and one output (VBUS). A current limit input (ILIM) defines the over-current and in-rush current limit, and a voltage detect output (VDET) monitors the voltage level on VBUS. An open-drain fault output (FAULT) indicates when a fault condition occurs. An enable input (EN) controls 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, the NX5P2190 is a complete solution for power domain isolation and protection applications. The enable input includes integrated logic level translation making the device compatible with lower voltage processors and controllers.
製品詳細
Features
- 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 mΩ (maximum) at a supply voltage of 4.0 V
- Low-power mode (ground current 20 μA 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 JDS-001 Class 2 exceeds 2 kV
- IEC61000-4-2 contact discharge exceeds 8 kV for pins VBUS
- Specified from ‑40 °C to +85 °C
Target Applications
- USB OTG applications
