Overview
The NX20P3483UKAZ, produced by NXP USA Inc., is a highly integrated power switch IC designed specifically for USB Power Delivery (PD) and Type-C applications. This device combines multiple power switches and a low-dropout regulator (LDO) to provide a comprehensive solution for managing high voltage power delivery. It supports bidirectional high voltage switching, adjustable overcurrent limits, and various protection features, making it an ideal component for modern USB PD and Type-C implementations.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage | Up to 20V |
| Current Limit (Sink) | Up to 5A at 20V |
| Current Limit (Source) | Up to 3.4A at 6V |
| On State Resistance | 28mΩ (typical) for VBUS to VCHG, 38mΩ (typical) for V5V to VBUS |
| DC Tolerance | 29V |
| Package Type | WLCSP42: 0.4mm pitch, 2.51 x 2.91 x 0.525mm |
| I2C Interface | Supports 1MHz Fast Mode Plus, four different I2C slave addresses |
| Protection Features | Overvoltage protection, reverse current protection, over-temperature protection, short circuit protection |
| Supply Voltage Range | VBUS: 2.8V to 20V, V5V: 4.0V to 5.5V, VDD: 2.7V to 5.5V |
Key Features
- Bidirectional high voltage power switch supporting both sink and source configurations.
- Adjustable overcurrent limit from 400mA to 3.4A via I2C-bus interface.
- Integrated 100mA LDO for dead battery operation.
- Ultra-low ON resistance: 28mΩ for VBUS to VCHG and 38mΩ for V5V to VBUS.
- Fast role swap support for USB PD3.0 applications.
- VBUS discharge circuit integrated according to USB PD VBUS discharging requirements.
- Slew rate control for minimizing inrush current during startup.
- Over-temperature protection to isolate switch terminals when overheated.
- I2C-bus interface for configuring switches and programming parameters.
Applications
The NX20P3483UKAZ is designed for use in USB Power Delivery (PD) and Type-C applications, including but not limited to:
- USB PD chargers and power adapters.
- Type-C power delivery systems.
- Portable electronics with high power charging requirements.
- Automotive and industrial applications requiring robust power switching.
Q & A
- What is the maximum input voltage for the NX20P3483UKAZ? The maximum input voltage is up to 20V.
- What is the current limit for the sink configuration? The current limit for the sink configuration is up to 5A at 20V.
- What is the current limit for the source configuration? The current limit for the source configuration is up to 3.4A at 6V.
- What is the typical ON resistance of the high voltage power switch? The typical ON resistance is 28mΩ for VBUS to VCHG and 38mΩ for V5V to VBUS.
- Does the device support I2C interface? Yes, it supports 1MHz Fast Mode Plus I2C-bus interface with four different I2C slave addresses.
- What protection features are integrated into the device? The device includes overvoltage protection, reverse current protection, over-temperature protection, and short circuit protection.
- What is the purpose of the integrated LDO? The integrated 100mA LDO provides power supply for dead battery operation.
- Does the device support fast role swap for USB PD3.0? Yes, it supports fast role swap for USB PD3.0 applications.
- How does the device minimize inrush current during startup? The device includes slew rate control for minimizing inrush current during startup.
- What is the package type of the NX20P3483UKAZ? The package type is WLCSP42 with a 0.4mm pitch, measuring 2.51 x 2.91 x 0.525mm.
