MC34845BEP

LED Driver IC Overview

The MC34845BEP is a six-channel LED backlight driver IC manufactured by NXP Semiconductors. It operates as a DC-DC boost regulator with an internal switch, designed for driving multiple LED strings in series or parallel configurations. The device accepts an input supply voltage ranging from 5 V to 21 V and provides regulated output voltages between 8 V and 60 V. It supports up to 2.6 A of output current per channel and dissipates power up to 3.4 W. The component is housed in a 24-pin QFN package with an exposed pad, suitable for surface mount technology, and functions within a temperature range of -40°C to +85°C.

LED Driver IC Feature Summary

• Integrates a high-efficiency step-up (boost) converter topology with internal switching elements for compact LED drive solutions.
• Provides independent regulation for six distinct LED channels, enabling uniform brightness control across complex backlight arrays.
• Supports digital dimming capabilities for precise luminance adjustment without compromising color consistency.

LED Driver IC Applications

• Backlight drivers for LCD panels in automotive infotainment systems
• LED illumination modules for industrial display interfaces
• High-brightness lighting circuits in portable electronic devices

LED Driver IC Procurement Notes

Verify the exact suffix and tape-and-reel specifications against the manufacturer's latest documentation, as packaging formats may vary. Confirm that the obsolete status does not impact long-term availability requirements for your production cycle. Ensure compatibility with existing PCB footprints for the 24-QFN package before finalizing procurement decisions.

LED Driver IC Selection Notes

Select this component when designing systems requiring multi-channel LED regulation with a single boost converter stage. Consider the 21 V maximum input limit and 60 V output capability to ensure alignment with the target LED string voltage drops. Evaluate thermal management strategies given the 3.4 W power dissipation rating in the QFN-24 package.

LED Driver IC Part Context

This part belongs to NXP's family of LED lighting driver integrated circuits, specifically tailored for backlight applications. It complements other driver variants by offering a fixed six-channel configuration optimized for cost-sensitive and space-constrained designs. The MC34845 series typically integrates protection features such as over-voltage and thermal shutdown to enhance system reliability.

LED Driver IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct replacements should be sourced through authorized distributors or verified via NXP's official obsolescence notices for equivalent functional alternatives.

LED Driver IC FAQ

What is the maximum output voltage supported by the MC34845BEP?

The device supports an output voltage range up to 60 V, allowing it to drive high-voltage LED strings in series.

Does the MC34845BEP include internal switching components?

Yes, the IC integrates internal switches, eliminating the need for external power MOSFETs in the boost converter circuit.