Overview
The NX20P3483UKZ, produced by NXP USA Inc., is a versatile and highly integrated power management IC designed specifically for USB Power Delivery (USB PD) and Type-C applications. This device combines multiple power switches and a Low Dropout (LDO) regulator, making it an ideal solution for complex power management scenarios. It supports bidirectional high-voltage switching, a 5V power switch, and a 100mA LDO for dead battery operation, ensuring robust and efficient power handling.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | WLCSP42 (0.4mm pitch, 2.51 x 2.91 x 0.525mm) |
| High Voltage Power Switch | 29V DC tolerance, sink up to 5A at 20V, source up to 3.4A at 6V |
| ON Resistance | 28mΩ (typical) for VBUS to VCHG, 38mΩ (typical) for V5V to VBUS |
| Supply Voltage Range | VBUS: 2.8V to 20V, V5V: 4.0V to 5.5V, VDD: 2.7V to 5.5V |
| Current Capability | Maximum 5A continuous current for HV sink, maximum 3.4A continuous current for HV source and 5V source |
| Protection Features | Overvoltage protection, reverse current protection, adjustable overcurrent limit, short circuit protection, over temperature protection |
| Interface | I2C-bus interface with 1MHz Fast Mode Plus and four different I2C slave addresses |
| LDO | 100mA LDO with reverse voltage protection |
Key Features
- Bidirectional high-voltage power switch supporting both 20V sink and 6V source configurations.
- 5V power switch with adjustable overcurrent limit, “ideal diode” feature, and short circuit protection.
- 100mA LDO for dead battery operation with reverse voltage protection.
- Integrated VBUS discharge circuit according to USB PD VBUS discharging requirements.
- Turn-on slew rate control to minimize inrush current during startup.
- Over temperature protection to isolate switch terminals when overheated.
- I2C-bus interface for configuring switches and programming parameters.
- Fast role swap support for USB PD3.0 applications.
Applications
The NX20P3483UKZ is designed for use in various USB Power Delivery and Type-C applications, including but not limited to:
- USB PD chargers and power adapters.
- Portable electronics with Type-C connectors.
- Laptops and tablets with USB PD capabilities.
- Automotive systems requiring high-voltage power switching.
Q & A
- What is the maximum voltage tolerance of the high-voltage power switch in the NX20P3483UKZ?
The high-voltage power switch has a 29V DC tolerance. - What are the current capabilities of the high-voltage power switch?
The switch can sink up to 5A at 20V and source up to 3.4A at 6V. - What protection features are integrated into the NX20P3483UKZ?
The device includes overvoltage protection, reverse current protection, adjustable overcurrent limit, short circuit protection, and over temperature protection. - How is the NX20P3483UKZ controlled?
The device is controlled through an I2C-bus interface. - What is the purpose of the 100mA LDO in the NX20P3483UKZ?
The 100mA LDO provides power supply for dead battery operation with reverse voltage protection. - Does the NX20P3483UKZ support fast role swap for USB PD applications?
Yes, it supports fast role swap for USB PD3.0 applications. - What is the package type and dimensions of the NX20P3483UKZ?
The device is offered in a WLCSP42 package with dimensions of 2.51 x 2.91 x 0.525mm and a 0.4mm pitch. - What are the typical ON resistances of the power switches?
The typical ON resistances are 28mΩ for VBUS to VCHG and 38mΩ for V5V to VBUS. - What safety approvals does the NX20P3483UKZ have?
The device has safety approvals such as UL 62368-1. - How does the NX20P3483UKZ minimize inrush current during startup?
The device includes turn-on slew rate control to minimize inrush current during normal startup.
