LM536253QRNLRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM536253QRNLRQ1 is an automotive-qualified synchronous step-down DC/DC converter from the LM53625-Q1 series. It features a fixed 3.3 V output and supports up to 3.5 A of continuous output current. The device operates with an input voltage range of 3.9 V to 36 V and utilizes a fixed switching frequency of 2.1 MHz. It is housed in a 22-pin VQFN-HR package (5x4 mm) and is rated for junction temperatures up to 150°C, meeting AEC-Q100 standards.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• Integrated synchronous rectification for high efficiency
• Fixed 2.1 MHz switching frequency enables compact passive design
• Extended thermal performance supporting operation up to 150°C

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment system power distribution
• Telematics control unit voltage regulation
• Body control module power supply networks
• ADAS sensor interface power conditioning

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'RQ1' confirms the reel packaging format and automotive qualification status. Ensure the specific pinout matches the VQFN-HR-22 footprint requirements. Confirm RoHS compliance details against the latest manufacturer documentation before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V rail is required for automotive applications. The 3.5 A current capability suits moderate load scenarios. The 2.1 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the 36 V maximum input voltage aligns with the system's transient protection limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM53625-Q1 family of wide-input buck converters. It shares the same core architecture as the LM53635-Q1 but offers a fixed output voltage option instead of adjustable regulation. The device integrates internal compensation and protection features typical of Texas Instruments' automotive PMIC portfolio.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM536255QRNLRQ1 provides a 5 V fixed output alternative within the same package and series. LM536353QRNLTQ1 offers adjustable output with similar electrical characteristics. Cross-reference datasheets to confirm pin compatibility and thermal performance requirements.