LX1745CPW

LED Driver IC Overview

The LX1745CPW is a compact, high-efficiency step-up (boost) DC-DC controller designed for driving white or color LEDs in LCD lighting applications. It features three independent outputs with an output voltage capability of up to 25V. The device operates on a supply voltage range of 1.6V to 6V and supports both analog and PWM dimming methods. It is housed in a 20-TSSOP package and functions within an operating temperature range of -40°C to 85°C.

LED Driver IC Feature Summary

• Three-output boost topology for multi-string LED driving
• Supports analog and PWM dimming control interfaces
• High efficiency step-up regulation for LCD backlighting

LED Driver IC Applications

• White LED driving in LCD displays
• Color LED driving in LCD displays
• LCD backlight power management systems

LED Driver IC Procurement Notes

Verify the exact manufacturer part number against official Microchip documentation to ensure compatibility. Confirm that the 20-TSSOP package matches your PCB footprint requirements. Check for any specific ordering suffixes that may indicate temperature grades or packaging variations. Ensure the component meets RoHS compliance standards if required by your manufacturing process. Cross-reference the datasheet revision date to confirm technical accuracy.

LED Driver IC Selection Notes

Select this component when a compact solution for driving multiple LED strings from a low-voltage source is required. The integrated boost regulator simplifies design by reducing external component count. Consider the 1.6V to 6V input range for battery-powered or low-voltage bus applications. Verify that the 25V output limit aligns with the forward voltage requirements of the target LED configuration. Evaluate thermal performance within the specified -40°C to 85°C operating range.

LED Driver IC Part Context

The LX1745 series belongs to Microsemi's portfolio of power management ICs focused on display backlighting. This specific model addresses the need for efficient, space-saving LED drivers in portable and industrial LCD devices. It integrates control logic and power switches to minimize board area. The device is part of a broader family of LED controllers offering various output configurations and dimming capabilities.

LED Driver IC Replacement Considerations

Consult official Microchip substitution guides for verified alternatives. Ensure any replacement maintains the 3-output boost architecture and 20-TSSOP package. Verify pin-to-pin compatibility if direct swap is intended. Confirm equivalent electrical specifications for input voltage, output current, and dimming functionality.