LX2273IDB-TR

LED Driver IC Overview

The LX2273IDB-TR is a versatile four-output DC-DC controller designed for LED driving applications. It supports step-down, boost, and SEPIC topologies to accommodate various LED configurations. The device integrates a 500mA output driver and operates with a wide input voltage range. It features PWM dimming capability for brightness control and includes protection mechanisms such as over-voltage and thermal shutdown. The component is housed in a 36-pin QSOP package.

LED Driver IC Feature Summary

• Supports multiple DC-DC converter topologies including buck, boost, and SEPIC for flexible LED array designs
• Integrates a high-current output driver capable of sourcing up to 500mA for direct LED control
• Enables precise brightness regulation through standard PWM dimming interface compatibility

LED Driver IC Applications

• Automotive exterior lighting systems requiring multi-channel LED drive
• Industrial illumination fixtures utilizing series-parallel LED arrays
• Portable battery-powered lighting devices needing efficient power conversion

LED Driver IC Procurement Notes

Verify the specific suffix and package variant against the official Microchip datasheet before procurement. Confirm that the component meets all required environmental and safety certifications for the intended application region. Check for any obsolescence notices or lifecycle status updates from the manufacturer. Ensure that the supply chain source provides authentic components with traceable documentation.

LED Driver IC Selection Notes

Select this controller when designing LED drivers that require independent control of multiple channels with varying voltage drops. Consider the thermal performance requirements given the integrated 500mA driver capability. Evaluate the PCB layout constraints associated with the 36-pin QSOP package size. Ensure the input voltage source aligns with the specified operating range for stable regulation across all outputs.

LED Driver IC Part Context

This component belongs to the LX22xx family of LED drivers manufactured by Microsemi Corporation, now part of Microchip Technology. These controllers are engineered for high-efficiency power management in lighting applications. The LX2273 specifically addresses designs needing four distinct output channels with robust protection features. It serves as a core power management solution for complex LED architectures.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs if considering alternative LED controllers from other manufacturers. Consult Microchip technical support for current equivalent recommendations.