LM536035QPWPRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM536035QPWPRQ1 is an automotive-grade synchronous step-down DC/DC converter from Texas Instruments. It features a fixed 5 V output and delivers up to 3 A of continuous output current. The device operates with an input voltage range of 3.5 V to 36 V. It integrates a fixed switching frequency of 2.1 MHz, enabling the use of small external components. Key electrical parameters include a quiescent current of 8 uA and an operating supply current of 23 uA. The unit supports a shutdown function and is rated for junction temperatures between -40°C and +150°C. It is housed in a 16-HTSSOP package and holds AEC-Q100 qualification.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade synchronous buck regulator designed for high reliability in vehicle environments
• Fixed 2.1 MHz switching frequency allows for compact passive component selection
• Integrated low quiescent current minimizes power consumption during standby modes
• Robust thermal performance supports operation in demanding high-temperature applications

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment system power distribution
• Telematics control unit regulation
• Body control module power supplies
• Instrument cluster backlighting drivers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific suffix 'PWPRQ1' matches the required HTSSOP-16 package and tape-and-reel quantity. Confirm that the AEC-Q100 Grade 1 qualification aligns with your system's temperature and reliability requirements. Ensure the fixed 5 V output specification meets the load requirements without needing adjustment resistors. Check for any recent product change notices regarding pinout or marking updates.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V rail is required at 3 A in an automotive setting. The 2.1 MHz frequency is suitable for space-constrained designs where smaller inductors are preferred over lower-frequency alternatives. Consider the 36 V maximum input rating for standard 12 V and 24 V automotive bus architectures. Evaluate the 16-pin HTSSOP footprint against available PCB real estate compared to QFN options in the same family.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM53603-Q1 series of SIMPLE SWITCHER regulators. It shares architectural similarities with other members like the LM53603AQPWPTQ1 but differs in output configuration. While adjustable variants exist, this specific model provides a stable 5 V output, simplifying design implementation for standard logic and peripheral supplies in automotive electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM536035QPWPTQ1 offers the same electrical specifications but utilizes a PowerTSSOP package instead of HTSSOP. LM53603AQPWPTQ1 is an adjustable version within the same series requiring external feedback resistors. Cross-reference package dimensions carefully if replacing on existing boards.