LM63635CAQTDRRRDN

Voltage Regulators - DC DC Switching Regulators Overview

The LM63635CAQTDRRRDN is an automotive-grade synchronous step-down DC/DC converter from Texas Instruments. It operates with an input voltage range of 3.5 V to 36 V and delivers a maximum output current of 3.25 A. The device features adjustable switching frequencies between 250 kHz and 2.2 MHz, allowing for optimization of external component size and efficiency. It includes spread spectrum modulation to reduce EMI peaks. The regulator supports output voltages from 1 V to 24 V and functions within an extended junction temperature range of -40°C to +150°C. It is housed in a compact 12-WSON package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency in rugged automotive environments
• Adjustable switching frequency with spread spectrum modulation to minimize electromagnetic interference
• Robust protection features including overcurrent, thermal, and undervoltage lockout

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Telematics control units
• Body control modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'DN' against official Texas Instruments documentation to confirm availability and exact electrical characteristics, as distributor listings may vary. Ensure compatibility with automotive qualification standards required for your application. Cross-reference the datasheet revision date to ensure access to the latest technical updates and design recommendations.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive applications requiring high input voltage tolerance up to 36 V and significant load currents up to 3.25 A. The wide operating temperature range makes it suitable for harsh under-hood or chassis environments. Consider the adjustable frequency feature if system noise constraints require specific switching rates or if minimizing passive component footprint is a priority.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM63635-Q1 family of automotive step-down converters. These devices are engineered for reliability in demanding vehicle electronics. The family shares core topology and protection mechanisms, differing primarily in output configurations and packaging options. This specific variant targets high-current automotive loads requiring robust performance across extreme temperatures.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible alternatives within the LM63635 series or other TI automotive buck converters with similar current ratings. Verify that any substitute maintains the 36 V input rating and 150°C junction temperature capability. Ensure the replacement supports the required output voltage range and switching frequency adjustments.