TPS65321AQPWPRQ1

Overview

The TPS65321AQPWPRQ1 is a dual-output power management integrated circuit designed for automotive applications, featuring one buck converter and one low-dropout linear regulator. It operates within an input voltage range of 3V to 36V and supports switching frequencies between 100kHz and 2.5MHz. The buck output delivers up to 3.2A with adjustable voltage from 1.1V to 20V, while the LDO provides up to 280mA at voltages ranging from 1.1V to 5.5V. Packaged in a 14-lead HTSSOP, it functions reliably across temperatures from -40°C to 125°C and holds AEC-Q100 qualification.

Feature Summary

• Integrates a high-current step-down converter and a precision linear regulator into a single compact package.
• Features Eco-Mode technology to optimize efficiency under light load conditions.
• Includes comprehensive protection mechanisms such as thermal shutdown and overcurrent limiting.
• Supports flexible configuration through external resistor programming for output voltages.

Applications

• Automotive infotainment system power distribution
• Body control module voltage regulation
• Telematics unit power supply design

Procurement Notes

Verify the specific suffix 'A' against the official Texas Instruments datasheet to confirm the exact electrical characteristics and pinout compatibility. Ensure the component meets AEC-Q100 Grade 1 requirements for your target automotive environment. Cross-reference the 14-HTSSOP package dimensions with your PCB footprint library to prevent assembly errors during manufacturing.

Selection Notes

Select this device when a combined solution for high-current digital logic and sensitive analog circuits is required in space-constrained automotive designs. The wide input voltage range accommodates various vehicle battery architectures. Consider the thermal performance of the HTSSOP package relative to your board layout and ambient operating conditions to ensure stable regulation without external heatsinking.

Part Context

This component belongs to the TPS6532x-Q1 family of dual-output PMICs from Texas Instruments. It shares architectural similarities with the TPS65320-Q1 but offers distinct electrical specifications tailored for different load profiles. The family is widely utilized in modern vehicle electronics where efficient power conversion and robust reliability are critical for safety and performance standards.

Replacement Considerations

The TPS65320QPWPRQ1 serves as a functional alternative within the same product family. Verify that the input voltage window and current capabilities of the substitute meet your specific application requirements before swapping components in existing designs.