MC34845DEP

LED Driver IC Overview

The MC34845DEP is a six-channel LED backlight driver IC manufactured by NXP Semiconductors. It integrates a boost DC-DC converter with internal switches, designed for low-cost LED lighting applications. The device operates on an input voltage range of 5 V to 21 V and supports PWM dimming. It provides up to 2.6 A per channel switch current capability. The component is housed in a 24-pin QFN package (QFN-24) with exposed pad for thermal management. It functions within a temperature range of -40°C to +85°C.

LED Driver IC Feature Summary

• Integrates a step-up (boost) DC-DC converter topology with internal power switches for efficient LED driving.
• Supports independent control of six output channels for multi-zone or uniform backlighting requirements.
• Enables precise brightness regulation through pulse-width modulation (PWM) dimming interface.

LED Driver IC Applications

• LED backlight drivers for liquid crystal displays (LCDs)
• Portable electronic devices requiring multi-channel LED illumination
• Automotive display systems utilizing LED backlights

LED Driver IC Procurement Notes

Verify the specific suffix DE against official NXP documentation to confirm package type and tape/reel specifications. Confirm end-of-life status as some sources indicate discontinuation while others list active stock. Ensure compatibility with existing PCB footprint for the 24-QFN-EP package before procurement.

LED Driver IC Selection Notes

Select this component when a single-chip solution for six-channel LED backlighting is required. It is suitable for designs needing integrated boost conversion without external power switches. Consider the 2.6A switch current limit and 21V maximum supply voltage when sizing the LED string configuration.

LED Driver IC Part Context

This part belongs to the MC34845 series of LED drivers from NXP Semiconductors. It is derived from Freescale Semiconductor technology acquired by NXP. The series focuses on cost-effective solutions for portable and automotive display backlighting applications requiring multiple regulated outputs.

LED Driver IC Replacement Considerations

Check for MC34845 variants with different suffixes such as CEPR2 for packaging differences. Verify if alternative NXP LED drivers like the MC34674 series meet the channel count and current requirements for direct substitution.