LM51231QRGRRQ1

DC DC Switching Controllers Overview

The LM51231QRGRRQ1 is a wide-input synchronous boost switching controller from Texas Instruments, designed for automotive applications. It operates with an input voltage range supporting up to 60V and delivers an output voltage between 5V and 57V. The device features a fixed 2.2MHz switching frequency and supports up to 98% maximum duty cycle. It is housed in a VQFN-20 package and functions as a non-isolated converter with a shutdown capability. The component is rated for operation within a temperature range of -40°C to +125°C and offers a maximum output power capacity of 200W.

DC DC Switching Controllers Feature Summary

• Synchronous boost topology with wide input voltage support
• Fixed 2.2MHz switching frequency for compact passive design
• Automotive-grade reliability with extended temperature rating
• Integrated shutdown control for system power management

DC DC Switching Controllers Applications

• Automotive infotainment systems
• LED lighting drivers
• Industrial power supplies
• Telecommunications equipment

DC DC Switching Controllers Procurement Notes

Verify the specific suffix QRGRRQ1 against the official Texas Instruments datasheet to confirm automotive qualification and tape-and-reel packaging specifications. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles defined in the manufacturer's guidelines. Cross-reference the ordering part number with authorized distributors to validate authenticity and traceability before procurement.

DC DC Switching Controllers Selection Notes

Select this controller when a high-efficiency synchronous boost solution is required for wide-input automotive or industrial environments. The fixed 2.2MHz frequency allows for smaller inductor and capacitor sizes compared to lower-frequency alternatives. Consider the VQFN-20 package for thermal performance and board space constraints. Verify that the required output voltage range falls within the 5V to 57V specification.

DC DC Switching Controllers Part Context

This component belongs to the LM51231 family of synchronous boost controllers from Texas Instruments. It is part of the broader portfolio of power management integrated circuits (PMICs) designed for robust performance in demanding applications. The 'Q' designation indicates automotive qualification, aligning with AEC-Q100 standards for reliability in vehicle electronics.

DC DC Switching Controllers Replacement Considerations

Consult the official Texas Instruments product selection guide for direct pin-to-pin or functional equivalents within the LM5123x series. Verify that any substitute component matches the automotive grade, operating temperature range, and switching frequency requirements.