LM63635CA3QDRRRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM63635CA3QDRRRQ1 is an automotive-qualified synchronous step-down DC/DC converter from Texas Instruments. It operates with an input voltage range of 3.5 V to 36 V and provides a fixed output voltage of 3.3 V at up to 3.25 A. The device features a switchable frequency between 250 kHz and 2.2 MHz, with a typical operating frequency of 400 kHz. It includes a shutdown function and exhibits a low quiescent current of 23 uA. Packaged in a 12-WSON (3x3 mm) with exposed pad for surface mount installation, it supports junction temperatures from -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability compliant with AEC-Q100 standards for robust performance in vehicle environments.
• Integrated synchronous rectification ensures high efficiency across the load and input voltage ranges.
• Adjustable switching frequency allows optimization for external component size or noise sensitivity.
• Compact WSON package facilitates space-constrained printed circuit board layouts.

Voltage Regulators - DC DC Switching Regulators Applications

• In-vehicle infotainment systems requiring stable power regulation.
• Telematics control units needing wide input voltage tolerance.
• Body electronics modules utilizing buck conversion for downstream logic supplies.
• ADAS sensor interfaces demanding low quiescent current operation.

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to ensure correct output voltage and package variant. Confirm AEC-Q100 qualification status if required for specific automotive safety integrity levels. Check moisture sensitivity level handling requirements during storage and assembly. Ensure compatibility with lead-free soldering processes as per RoHS specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required within the LM63635 family. Compare against adjustable variants if flexible output voltages are needed. Consider the 3.25 A continuous current capability against peak load demands. Evaluate thermal performance in the WSON package relative to ambient conditions. Verify that the 36 V maximum input voltage covers the system's transient spikes.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM63635-Q1 series of simple switcher regulators designed for automotive applications. It shares architectural similarities with other members like the LM63635CAQDRRRQ1 but differs in fixed output configuration. The series emphasizes ease of use with minimal external components while maintaining high efficiency and compact footprint suitable for modern electronic control units.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM63635-Q1 variants with matching pinouts and electrical characteristics. Verify equivalent current ratings and thermal resistance when cross-referencing with older generation regulators. Ensure replacement parts maintain the same automotive qualification grade and package dimensions for mechanical fit.