LM536255QRNLTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM536255QRNLTQ1 is an automotive-grade synchronous step-down DC/DC converter from Texas Instruments. It features a fixed 2.5 V output and supports up to 3.5 A continuous load current. The device operates with an input voltage range of 3.9 V to 36 V and utilizes a 2.1 MHz switching frequency. Packaged in a 22-VQFN-HR (5x4) format, it meets AEC-Q100 standards for reliability. Key electrical parameters include a quiescent current of 6 uA and operation across a junction temperature range of -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency in compact designs
• Automotive qualification ensuring reliability under harsh environmental conditions
• Fixed output voltage configuration simplifies system power architecture

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring stable low-voltage rails
• Electronic control units (ECUs) needing efficient buck conversion
• ADAS sensor modules demanding high-reliability power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TQ1' confirms automotive grade AEC-Q100 qualification. Ensure the '5' indicates the fixed 2.5 V output variant. Confirm package type matches 22-VQFN-HR requirements. Cross-reference datasheet revision history for any pinout or thermal pad updates before finalizing design integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.5 V rail is required for automotive applications. Consider the 3.5 A current limit against peak load demands. Evaluate the 2.1 MHz frequency for passive size optimization versus EMI constraints. Compare thermal performance in the VQFN-HR package against ambient operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM536xx-Q1 family of high-efficiency synchronous buck converters designed for automotive use. It shares architectural similarities with other variants like the LM536355 but differs in fixed output voltage settings. The family targets applications requiring robust power delivery in space-constrained automotive environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM536355QRNLTQ1 offers identical form factor and current capabilities but provides a fixed 5 V output instead of 2.5 V. Designers must verify if the system voltage requirement aligns with the alternative's fixed output level before substitution.