Overview
The NX5P3363UKZ is a precision adjustable current-limited power switch designed for USB PD (Power Delivery) applications. Manufactured by NXP USA Inc., this device is tailored to provide robust and reliable power management. It features advanced protection mechanisms such as under voltage lockout, over-temperature protection, and reverse current protection, ensuring the switch terminals are isolated during fault conditions. The device supports a wide range of current limits, making it versatile for various power delivery scenarios.
Key Specifications
| Parameter | Specification |
|---|---|
| Package Type | 16-WLCSP (2.2 x 2.2 mm) |
| Maximum Current Rating | Up to 3.3 A |
| Current Limit Range | 400 mA to 3.3 A (programmable via ILIM pin) |
| VBUS Voltage Tolerance | Up to 29 V |
| Protection Features | Under voltage lockout, over-temperature protection, reverse current protection |
| Soft Start Capability | Built-in soft start, can be disabled for fast output |
| Fault Indication | Open-drain fault output (FLT) |
| Fast RCP Recovery | Power MOSFET turns on within 50 μs after exiting reverse current protection state |
Key Features
- Precision adjustable current limit from 400 mA to 3.3 A using an external resistor.
- Advanced protection features including under voltage lockout, over-temperature protection, and reverse current protection.
- Built-in soft start to minimize current surges during turn-on, with the option to disable for fast output.
- Fast RCP (Reverse Current Protection) recovery to prevent voltage drops during power source swaps.
- Open-drain fault output (FLT) to indicate fault conditions.
- Compact 16-WLCSP package (2.2 x 2.2 mm) for space-efficient designs.
Applications
- USB Power Delivery (PD) applications requiring precise current limiting and robust protection.
- Consumer and industrial power management systems.
- Automotive applications (with the NX5P3363UK/Q100Z auto-grade derivative part).
- Power source swap applications where fast RCP recovery is crucial.
Q & A
- What is the primary function of the NX5P3363UKZ?
The NX5P3363UKZ is a precision adjustable current-limited power switch designed for USB PD applications.
- What are the key protection features of the NX5P3363UKZ?
The device includes under voltage lockout, over-temperature protection, and reverse current protection.
- How is the current limit set on the NX5P3363UKZ?
The current limit can be programmed from 400 mA to 3.3 A using an external resistor between the ILIM pin and GND pin.
- What is the purpose of the FLT pin on the NX5P3363UKZ?
The FLT pin is an open-drain fault output that indicates when a fault condition has occurred.
- Can the soft start feature be disabled on the NX5P3363UKZ?
Yes, the soft start feature can be disabled by pulling the FO pin HIGH to request a fast output.
- What is the significance of the fast RCP recovery feature?
The fast RCP recovery ensures the power MOSFET turns on within 50 μs after exiting the reverse current protection state, preventing significant voltage drops during power source swaps.
- In what package is the NX5P3363UKZ available?
The device is available in a 16-WLCSP package with dimensions of 2.2 x 2.2 mm.
- Is the NX5P3363UKZ suitable for automotive applications?
Yes, an auto-grade derivative part, NX5P3363UK/Q100Z, is available for automotive applications.
- What is the maximum VBUS voltage tolerance of the NX5P3363UKZ?
The device can tolerate up to 29 V on the VBUS pin.
- How does the NX5P3363UKZ handle overcurrent conditions?
In an overcurrent condition, the device clamps the output current to the value set by ILIM and asserts the FLT flag while keeping the switch on.
