LM536253QRNLTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM536253QRNLTQ1 is a synchronous step-down DC-DC converter optimized for automotive applications. It delivers a fixed 3.3 V output with a maximum current of 2.5 A. The device operates from an input voltage range of 3.9 V to 36 V and utilizes a fixed switching frequency of 2.1 MHz. It features a low quiescent current of 18 uA and supports junction temperatures up to 150°C. Packaged in a 22-VQFN-HR (5x4) surface-mount housing, it holds AEC-Q100 qualification.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency
• Fixed 2.1 MHz switching frequency enables compact passive component selection
• Automotive-grade reliability with extended temperature operation

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Instrument cluster power distribution
• Body control module regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes to ensure correct output voltage and package variant. Confirm AEC-Q100 qualification status matches specific vehicle requirements. Check moisture sensitivity level handling procedures during assembly. Validate input/output capacitor specifications against datasheet recommendations for stability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V rail is required at 2.5 A in space-constrained automotive designs. The 2.1 MHz frequency allows smaller inductors compared to lower-frequency alternatives. Ensure input voltage remains within the 3.9 V to 36 V operational window. Consider thermal performance under maximum load conditions given the compact QFN package.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM53625/35-Q1 family of synchronous buck converters. It shares architectural similarities with the LM53635 series but provides a lower 2.5 A output current capability. The family targets robust power management in harsh automotive environments while maintaining high efficiency across varying load conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM536353QRNLTQ1 offers identical functionality with increased 3.5 A output current capacity. LM536253QRNLRQ1 represents the same electrical specification with a different tape-and-reel packaging option.