MC34845CEP

LED Driver IC Overview

The MC34845CEP is a six-channel LED backlight driver IC manufactured by NXP Semiconductors. It operates from a supply voltage range of 5 V to 21 V and features an internal boost converter topology. The device provides up to 2.3 A of switch current and supports PWM dimming for brightness control. It is housed in a 24-pin QFN-EP (4x4 mm) package designed for surface mount installation. The component functions within a temperature range of -40°C to +85°C and includes protection features such as open-load detection and thermal shutdown.

LED Driver IC Feature Summary

• Six independent output channels for driving multiple LED strings
• Integrated high-efficiency step-up DC-DC regulator
• Supports pulse-width modulation (PWM) dimming control
• Includes diagnostic capabilities for open-load detection

LED Driver IC Applications

• Backlighting for LCD displays ranging from 10 to 17 inches
• Portable electronic devices requiring efficient LED power management
• Industrial display systems operating within specified voltage ranges

LED Driver IC Procurement Notes

Verify the specific suffix 'CEP' against official NXP documentation to confirm package type and tape-and-reel specifications. Confirm that the obsolete status does not impact long-term availability requirements. Ensure compatibility with existing PCB footprints for the 24-QFN-EP package before procurement.

LED Driver IC Selection Notes

Select this component when designing circuits for medium-to-large LCD backlights requiring six independent channels. Consider the 5 V to 21 V input range for battery-powered or single-cell lithium applications. Evaluate the 2.3 A switch current capability against total LED string requirements. Verify thermal performance within the -40°C to +85°C operational envelope.

LED Driver IC Part Context

This part belongs to the MC34845 series of high-efficiency LED drivers designed specifically for backlighting applications. The series targets LCD displays, offering integrated power regulation and channel control. The MC34845CEP variant specifies the commercial temperature grade and QFN packaging configuration.

LED Driver IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Check NXP's official obsolescence notices for recommended alternatives.