LED7707TR

Overview

The LED7707TR is a monolithic LED driver IC featuring an integrated boost converter and six controlled current generators, designed for LCD panel backlighting. It supports an input voltage range of 4.5 V to 36 V and delivers up to 85 mA per channel with ±2% current matching. The device utilizes peak current-mode control with an adjustable switching frequency from 250 kHz to 1 MHz. Key specifications include a maximum output voltage of 36 V, PWM dimming capability with less than 10 μs minimum on-time, and operation within a temperature range of -40°C to +150°C TJ.

Feature Summary

• Integrates a high-efficiency boost converter with an internal power MOSFET and a +5 V LDO for device supply.
• Provides six independent current generator rows with programmable sink currents and open/short-circuit fault detection.
• Supports precise PWM dimming with a minimum on-time of less than 10 μs and external synchronization options.

Applications

• LCD panel backlighting for personal electronics
• Industrial display systems
• Automotive infotainment TFT backlighting

Procurement Notes

Verify the specific suffix (e.g., TR) against the manufacturer's official datasheet to confirm packaging type and reel specifications. Ensure that the ordered component matches the exact part number variant required for your design, as suffixes may indicate differences in tape-and-reel dimensions or moisture sensitivity levels. Cross-reference the ordering code with authorized distributors to guarantee authenticity and traceability.

Selection Notes

Select this component when designing multi-row LED arrays requiring high current matching accuracy and integrated boost regulation. The wide input voltage range and adjustable switching frequency offer flexibility for various power supply configurations. Consider the thermal performance and package size if space constraints are critical, and verify that the application environment aligns with the specified operating temperature range.

Part Context

The LED7707 belongs to STMicroelectronics' dedicated LED lighting driver family, specifically engineered for medium-current applications. It combines power management and driver functions into a single chip to reduce external component count. This integration simplifies the design process for backlighting solutions while maintaining high efficiency and reliability standards for commercial and industrial displays.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative drivers based on pin compatibility, current capabilities, and boost topology requirements. Verify that any replacement meets the same electrical specifications and thermal characteristics for direct integration.