LM536033QPWPRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM536033QPWPRQ1 is an automotive-grade synchronous buck switching regulator manufactured by Texas Instruments. It operates within a 3.5 V to 36 V input voltage range and delivers a fixed 3.3 V output at up to 3 A current. The device features a high switching frequency of 2.1 MHz, enabling the use of small external components. It includes integrated protection features such as overcurrent protection and thermal shutdown. The component is qualified to AEC-Q100 standards and supports operation in ambient temperatures from -40°C to +85°C, with junction temperatures reaching +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency across load ranges
• Fixed 3.3 V output voltage configuration for standard logic supply rails
• High-frequency 2.1 MHz switching operation to minimize passive component size
• Built-in thermal and current protection mechanisms for system reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring stable 3.3 V power
• Body control modules (BCM) and gateway ECUs
• Telematics units and connected car applications
• ADAS sensor interface power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the required package type and tape/reel specifications. Confirm the specific temperature grade and AEC-Q100 qualification level aligns with the target automotive application requirements. Ensure compatibility with the intended PCB footprint and soldering profile for the HTSSOP-16 package.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 3.3 V output is required without external feedback resistor adjustments. Consider the 3 A continuous current capability and 36 V maximum input voltage for direct battery or alternator-fed designs. Evaluate the 2.1 MHz switching frequency against EMI constraints and inductor size limitations compared to lower-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM53603-Q1 family of simple switcher regulators designed for automotive environments. It shares architectural similarities with other members like the LM53603A but differs in output voltage configuration. The family emphasizes compact solution size and robust performance under varying automotive electrical conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM536033QPWPTQ1: Identical functional specifications with a different package variant (HTSSOP-16 vs. PowerTSSOP). Verify pinout compatibility and thermal pad differences before substitution.