LX1744CPW

LED Driver IC Overview

The LX1744CPW is a dual-output DC-DC controller designed for step-up (boost) applications, specifically functioning as an LED driver IC. It supports analog and PWM dimming capabilities. The device operates with a supply voltage range of 1.6V to 6V and provides output voltages up to 25V. It is housed in a 14-TSSOP package with a width of 0.173 inches (4.40mm). The component is classified under Power Management ICs (PMIC) for LED drivers.

LED Driver IC Feature Summary

• Dual-output architecture for simultaneous LED channel control
• Supports both analog and pulse-width modulation (PWM) dimming methods
• Integrated boost topology for efficient voltage step-up conversion

LED Driver IC Applications

• LED backlighting systems
• LCD bias voltage generation
• General-purpose LED driving circuits

LED Driver IC Procurement Notes

Verify the specific package variant, as the LX1744 series includes different packages such as 14-TSSOP and 16-MLPQ. Confirm that the supplier source is authorized, given the manufacturer's acquisition history. Check for end-of-life status or obsolescence notices from Microchip, as availability may be limited. Ensure compatibility with existing PCB footprints for the TSSOP form factor.

LED Driver IC Selection Notes

Select this component when a dual-channel boost converter with mixed dimming support is required. It is suitable for designs needing low input voltage operation down to 1.6V. Consider the thermal performance of the TSSOP package for the intended power dissipation. Verify that the 25V output limit meets the load requirements without exceeding safe operating areas.

LED Driver IC Part Context

This part belongs to the LX1744 family of LED drivers manufactured by Microsemi Corporation, now part of Microchip Technology. The family includes variants like LX1744CLQ in different packages. These controllers are engineered for high-efficiency lighting applications requiring precise current regulation and flexible dimming control interfaces.

LED Driver IC Replacement Considerations

Direct substitutes include other parts within the LX1744 family, such as LX1744CLQ, though package differences exist. Cross-reference with Microchip's official replacement guide for obsolete components. Ensure any alternative maintains dual-output boost capability and compatible dimming signal inputs.