LMR33630APAQRNXRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR33630APAQRNXRQ1 is an automotive-qualified synchronous step-down DC/DC converter from Texas Instruments. It operates with an input voltage range of 3.8 V to 36 V and delivers a maximum output current of 3 A. The device supports adjustable output voltages from 1 V to 24 V. Key electrical parameters include a fixed switching frequency of 400 kHz and a typical quiescent current of 24 uA. It is housed in a VQFN-HR-12 package and is rated for operation between -40°C and +125°C, meeting AEC-Q100 standards.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side and low-side N-channel MOSFETs enable efficient synchronous rectification within a compact footprint.
• Fixed 400 kHz switching frequency allows for the use of small external inductors and capacitors.
• Automotive qualification ensures reliability and compliance with AEC-Q100 stress test requirements.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• ADAS sensor power supplies
• Body electronics control modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number against official Texas Instruments documentation to confirm specific suffixes such as 'A' or 'P'. Ensure the component meets the required AEC-Q100 grade for your target application. Cross-reference the datasheet for exact thermal performance and pinout configurations before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 36 V is required for automotive applications. The 3 A output capability suits moderate load scenarios where space efficiency is critical. Consider the fixed 400 kHz frequency for balancing component size against electromagnetic interference constraints compared to higher-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMR33630 family of SIMPLE SWITCHER converters. It shares core topology and performance characteristics with other variants in the series, differentiated primarily by packaging options and specific automotive qualification grades. The family targets robust power management solutions for demanding vehicle environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR33630AQRNXRQ1: Pin-compatible alternative within the same product family offering identical electrical specifications and automotive qualification status.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LMR33630APAQRNXRQ1 support shutdown functionality?

No, this specific variant does not include a shutdown pin; it remains active based on input voltage presence.

What is the maximum operating junction temperature?

The device is rated for a maximum junction temperature of 150°C, although the ambient operating range extends to +125°C.