MC34844EPR2

LED Driver IC Overview

The MC34844EPR2 is a SMARTMOS high-efficiency LED driver designed for backlighting applications. It integrates a DC-DC step-up regulator with ten independent output channels, each capable of delivering up to 50mA. The device operates at a switching frequency of 1.2MHz and supports both analog and PWM dimming control methods. Housed in a 32-pin QFN-EP package measuring 5x5mm, it functions within an operating temperature range of -40°C to 105°C.

LED Driver IC Feature Summary

• Integrates a high-efficiency DC-DC boost converter with ten independent current-regulated outputs
• Supports dual dimming modes including analog and pulse-width modulation control
• Utilizes single-wire dimming control architecture for simplified interface design
• Features integrated power supply management within a compact surface-mount package

LED Driver IC Applications

• LCD panel backlighting systems
• Mobile device display illumination
• Portable electronic screen lighting
• Industrial display unit backlights

LED Driver IC Procurement Notes

Verify the manufacturer marking matches NXP Semiconductors or Freescale Semiconductor specifications. Confirm the package type is 32-QFN-EP (5x5) with exposed pad. Ensure the datasheet revision aligns with the requested technical parameters. Check for any specific ordering suffix variations that may affect pinout or thermal characteristics.

LED Driver IC Selection Notes

Select this component when a multi-channel LED driver is required for uniform backlight distribution. The integrated boost converter eliminates external inductor requirements for certain configurations. Consider the 1.2MHz switching frequency for EMI management. Verify that the 50mA per channel output meets the total luminance requirements of the target display module.

LED Driver IC Part Context

This part belongs to the MC34844 series of SMARTMOS LED drivers. It is manufactured by Freescale Semiconductor, now part of NXP Semiconductors. The device is specifically engineered for high-efficiency backlighting in portable electronics. It replaces older discrete solutions by integrating power and control stages.

LED Driver IC Replacement Considerations

MC34845CEP is a documented related variant within the same product family. Verify pin compatibility and current rating differences before substitution. Consult official cross-reference lists for direct replacements.