MC34844AEPR2

LED Driver IC Overview

The MC34844AEPR2 is a 10-channel LED backlight driver IC manufactured by NXP Semiconductors. It features an integrated boost converter topology with a maximum output current of 80 mA per channel and operates within a supply voltage range of 7 V to 28 V. The device supports an operating frequency of 600 kHz and delivers output voltages between 8 V and 60 V. Communication is handled via a 400 kHz I2C interface. It is housed in a 32-terminal HVQFN package (5 mm x 5 mm) and functions reliably across a temperature range of -40°C to +105°C.

LED Driver IC Feature Summary

• Integrates a 10-channel constant current LED driver with an internal boost power supply for simplified system design.
• Supports analog and PWM dimming control mechanisms for precise brightness regulation.
• Utilizes a standard 400 kHz I2C interface for configuration and data transmission.

LED Driver IC Applications

• LCD backlight driving for automotive displays
• High-brightness LED illumination systems
• Industrial display panels requiring wide input voltage ranges

LED Driver IC Procurement Notes

Verify the component status as obsolete or end-of-life before procurement planning, as manufacturers may discontinue production. Confirm that the HVQFN32 package dimensions match your PCB footprint requirements. Ensure compatibility with the 400 kHz I2C bus speed and check if the 80 mA per channel output meets your specific LED string current demands. Review the datasheet for thermal dissipation needs given the 105°C maximum junction temperature rating.

LED Driver IC Selection Notes

Select this component when a high number of LED channels are required from a single controller with integrated power management. It is suitable for applications needing a wide input voltage range up to 28 V and high output voltage capability up to 60 V. Consider the HVQFN32 package size constraints and the need for I2C communication. Evaluate thermal performance requirements against the specified operating temperature range of -40°C to +105°C.

LED Driver IC Part Context

This part belongs to the MC34844 series of LED lighting drivers designed for robust industrial and automotive environments. It combines multiple LED driver channels with a step-up DC-DC converter to reduce external component count. The series is characterized by its ability to drive long LED strings efficiently while maintaining precise current regulation across all channels.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference options through official NXP distributors or consult the manufacturer's obsolescence notice for recommended alternatives.