LMR43610RS5QRPERQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR43610RS5QRPERQ1 is an automotive-grade synchronous step-down DC-DC converter from Texas Instruments. It operates with an input voltage range of 3 V to 36 V and delivers a maximum output current of 1 A. The device supports both adjustable outputs starting at 1 V and fixed output configurations, including a specific 5 V variant in this suffix. It features a switching frequency range of 200 kHz to 2.2 MHz and maintains a low quiescent current of 2 uA during operation. The component is housed in a compact 9-pin VQFN-HR package and is rated for junction temperatures between -40°C and +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments.
• Integrated synchronous rectification provides high efficiency across the load and line conditions.
• Wide input voltage capability accommodates various automotive power bus architectures.
• Configurable switching frequency allows optimization for external component size and noise performance.

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment system power distribution
• Instrument cluster voltage regulation
• Telematics control unit supply
• Body control module power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the RS5Q suffix indicates the fixed 5 V output configuration when reviewing datasheets or ordering documentation. Confirm that the Q1 designation aligns with required automotive quality standards for your specific application environment. Ensure compatibility with the specified VQFN-HR-9 footprint during PCB layout preparation. Cross-reference the manufacturer's latest revision history to confirm material compliance and manufacturing origin details before final procurement approval.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an automotive-rated buck converter is required for 1 A loads within a 36 V input system. The fixed 5 V output option eliminates external feedback resistor networks, simplifying design complexity compared to adjustable variants. Consider the thermal performance of the VQFN-HR package for high ambient temperature scenarios. Evaluate the switching frequency settings against electromagnetic interference requirements for sensitive automotive electronics.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMR43610-Q1 family of wide input voltage synchronous buck converters designed specifically for automotive applications. The series offers multiple output current ratings and packaging options to suit diverse power density requirements. The LMR43610RS5QRPERQ1 represents a specific configuration within this lineup, providing a fixed 5 V output to streamline implementation in standard 5 V logic domains.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include other LMR43610-Q1 variants with matching pinouts and electrical characteristics, such as LMR43610MSC5RPERQ1 for fixed 5 V output or LMR43610MB3RPERQ1 for adjustable output. Verify that any substitute maintains the same automotive grade certification and thermal specifications.

Voltage Regulators - DC DC Switching Regulators FAQ

What does the 'RS5Q' suffix indicate for this part number?

The suffix denotes a fixed 5 V output voltage configuration, automotive grade (Q1), and the specific reel packaging type.

Is this component suitable for harsh automotive environments?

Yes, it is AEC-Q100 qualified and rated for junction temperatures up to 150°C, making it suitable for under-hood and cabin applications.