LED7708

Overview

The LED7708 is a multi-channel LED driver featuring an integrated boost controller and sixteen current generators. It accepts a 3.6 V to 36 V input voltage range and provides up to 85 mA per channel with ±2% accuracy. The device utilizes a 4-wire serial interface for control, supporting selectable 12-bit or 16-bit grayscale dimming resolution. It includes adaptive output voltage regulation, external synchronization pins, and comprehensive protection mechanisms such as overvoltage, overcurrent, thermal shutdown, and open/short LED fault detection.

Feature Summary

• Integrates a high-performance boost controller with adaptive output voltage regulation for improved efficiency
• Provides sixteen independent channels with programmable PWM brightness control via serial interface
• Supports external synchronization for noise reduction in multi-device applications
• Implements dedicated fault management for open-LED and shorted-LED conditions

Applications

• Medium and large LCD panel backlight drivers
• Advertisement panels requiring multiple LED strings
• Digital signage and display systems
• Gaming equipment lighting applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and temperature grade. Ensure compatibility with the intended host controller interface requirements. Confirm that the selected variant meets all automotive or industrial qualification standards if applicable to the target deployment environment.

Selection Notes

Select this component when designing systems requiring high channel counts with precise current matching from a single low-voltage rail. The integrated boost controller simplifies power architecture by eliminating external switching components. Consider the 4-wire serial interface speed and pin availability when planning the system layout and microcontroller connections.

Part Context

This part belongs to STMicroelectronics' LED lighting driver portfolio, specifically designed for high-efficiency backlighting solutions. It complements evaluation boards like the STEVAL-ILL035V1 series, which demonstrate its capabilities in medium-to-large LCD applications. The device is engineered to minimize power dissipation through adaptive voltage regulation while maintaining strict current accuracy across all channels.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.