MC34845EPR2

LED Driver IC Overview

The MC34845EPR2 is a DC-DC regulator IC manufactured by NXP USA Inc., designed specifically for LED backlight applications. It features a step-up (boost) topology with six independent outputs, capable of delivering up to 2.3A per channel. The device operates within a supply voltage range of 5V to 21V and provides output voltages between 8V and 60V. Packaged in a compact 24-QFN-EP (4x4 mm) format, it integrates internal switches to minimize external component count. The unit supports PWM dimming control and functions reliably across an operating temperature range of -40°C to 85°C.

LED Driver IC Feature Summary

• Integrates an internal switch architecture to reduce the requirement for external components and enhance system performance efficiency.
• Provides six distinct output channels suitable for driving complex LED backlight arrays with individual current regulation capabilities.
• Supports Pulse Width Modulation (PWM) dimming for precise brightness control and visual consistency in display applications.

LED Driver IC Applications

• LED backlight drivers for mobile devices
• Low cost 6-channel LED backlight systems
• Integrated power supply solutions for displays

LED Driver IC Procurement Notes

Verify the specific suffix 'EPR2' against the manufacturer's latest datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with your PCB footprint for the 24-QFN-EP (4x4 mm) exposed pad package. Confirm that the input voltage range of 5V to 21V aligns with your system design requirements before procurement.

LED Driver IC Selection Notes

Select this component when a multi-channel boost converter is required for LED backlighting with integrated switching capabilities. The 24-QFN-EP package offers a small form factor ideal for space-constrained portable electronics. Consider the 2.3A per channel output capability and the wide input voltage range when designing power stages for high-brightness display modules.

LED Driver IC Part Context

This part belongs to NXP's portfolio of power management integrated circuits, specifically targeting LED driver applications. It is often associated with Freescale Semiconductor legacy designs, as indicated by historical documentation. The MC34845 series is engineered to provide cost-effective solutions for multi-channel LED illumination in consumer electronics and industrial displays.

LED Driver IC Replacement Considerations

Check for direct pin-compatible substitutes within the MC34845 family or newer generations from NXP. Verify that any replacement maintains the 6-output boost topology and similar current ratings. Cross-reference the 24-QFN-EP package dimensions to ensure mechanical fit without redesigning the PCB layout.

LED Driver IC FAQ

What is the maximum output voltage per channel?

The MC34845EPR2 supports output voltages ranging from 8V to 60V per channel.

Does the IC include internal switching elements?

Yes, the device features internal switches, which helps reduce the number of external components needed for the circuit.