MC34845EP

LED Driver IC Overview

The MC34845EP is a six-channel LED backlight driver IC manufactured by NXP Semiconductors. It operates within an input voltage range of 5 V to 21 V and supports a maximum supply current of 5 mA. The device features a step-up (boost) DC-DC converter topology with an internal switch capable of delivering up to 2.3 A per output channel. It utilizes PWM dimming for brightness control and is housed in a 24-pin QFN package with an exposed pad. The component functions reliably across an operating temperature range from -40°C to +85°C, with a power dissipation rating of 3.4 W.

LED Driver IC Feature Summary

• Integrates a boost converter with internal switching elements for efficient LED driving
• Provides independent regulation for six distinct LED channels
• Supports pulse-width modulation dimming for precise brightness adjustment

LED Driver IC Applications

• LCD panel backlighting systems
• Mobile device display drivers
• Portable electronic equipment illumination

LED Driver IC Procurement Notes

Verify the specific suffix and package variant against the official datasheet before procurement. Confirm that the required electrical parameters match the design specifications. Check for obsolescence status as availability may be limited. Ensure compliance with environmental directives such as RoHS if required by the target market. Validate pin compatibility with existing PCB layouts.

LED Driver IC Selection Notes

Select this component when designing circuits requiring multi-channel LED regulation with integrated boost conversion. Consider the 2.3 A output capability and 21 V maximum input voltage limits during system planning. Evaluate the thermal performance given the 3.4 W power dissipation rating. Ensure the application environment stays within the specified -40°C to +85°C operating temperature range.

LED Driver IC Part Context

This part belongs to the NXP PMIC LED driver family, specifically designed for high-efficiency lighting applications. It replaces older discrete solutions by integrating multiple functions into a single compact package. The device is commonly used in consumer electronics where space constraints and power efficiency are critical design factors.

LED Driver IC Replacement Considerations

Check for direct substitutes within the same product family or compatible pin-to-pin alternatives. Verify that any replacement maintains the same 6-channel configuration and boost topology. Ensure the alternative component meets the same voltage and current specifications.