LM61480TQVAMRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM61480TQVAMRQ1 is an automotive-grade synchronous step-down DC/DC converter from Texas Instruments. It integrates a high-side N-channel MOSFET and a low-side N-channel MOSFET to deliver up to 8A of continuous output current. The device operates with an input voltage range of 3.8V to 60V, supporting wide input variations typical in automotive environments. It features a fixed switching frequency of 500kHz, which allows for the use of small external passive components. The converter includes comprehensive protection mechanisms such as cycle-by-cycle current limiting, thermal shutdown, and output overvoltage protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-efficiency power stage with internal high-side and low-side N-channel MOSFETs
• Wide input voltage range capability suitable for automotive load dump conditions
• Fixed 500kHz switching frequency enabling compact passive component selection
• Built-in protection against overcurrent, overheating, and output faults

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Telematics control units
• Body control modules
• ADAS sensor power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MRQ1' indicates the correct tape-and-reel packaging and automotive qualification level. Confirm that the operating temperature range meets the specific application requirements. Ensure compatibility with the target PCB footprint for the VQFN package. Cross-reference the datasheet revision date to ensure all latest electrical characteristics are considered during design validation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, high-current buck converter is required for 48V or 12V automotive architectures. It is suitable for designs needing high efficiency under varying load conditions. Consider the thermal performance of the VQFN package relative to the expected ambient temperature. Evaluate the need for external compensation if operating at frequencies different from the default setting.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM6148x family of automotive buck converters. It shares architectural similarities with other members like the LM61480 but differs in pinout, package, or specific electrical tolerances. The family is designed to meet AEC-Q100 standards for reliability in harsh automotive environments. It complements lower current variants for applications requiring higher power density.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-to-pin compatible alternatives within the same TI family. Verify that substitute parts maintain the same 60V maximum input rating. Ensure any replacement supports the required 8A output current without derating issues. Confirm that the replacement also holds the necessary automotive quality certifications.