ALED7707TR

Overview

The ALED7707TR is an automotive-grade LED driver IC featuring a monolithic boost converter and six controlled current generators. Designed for LCD panel backlighting, it supports input voltages from 4.5 V to 36 V and delivers up to 85 mA per channel with a maximum output voltage of 36 V. The device operates at adjustable switching frequencies between 250 kHz and 1 MHz, utilizing constant frequency peak current-mode control. It includes an internal power MOSFET, a +5 V LDO, and PWM dimming capability with less than 10 μs minimum on-time. Packaged in a 24-QFN (5x5) format, it functions within a temperature range of -40°C to +150°C TJ.

Feature Summary

• AEC-Q100 qualified automotive grade construction with integrated boost topology
• Six independent current generator rows with ±3% matching accuracy
• Comprehensive fault management including open and short-circuit LED detection
• Adjustable switching frequency with external synchronization support

Applications

• Automotive interior lighting systems
• TFT LCD panel backlighting
• Infotainment display illumination
• Multi-string LED array driving

Procurement Notes

Verify the specific ordering suffix corresponds to the required tape-and-reel configuration, as packaging variants exist. Confirm that the selected component meets AEC-Q100 reliability standards for your target automotive environment. Ensure the design accommodates the 24-VQFN thermal pad requirements for adequate heat dissipation during operation.

Selection Notes

Select this component when designing high-efficiency backlight solutions requiring precise current regulation across multiple LED strings. The integrated boost converter simplifies bill-of-materials by eliminating external power switches. Consider the adjustable frequency range for optimizing electromagnetic interference performance relative to system clock constraints.

Part Context

The ALED7707 belongs to STMicroelectronics' dedicated LED lighting driver family, engineered specifically for medium-current applications. It complements other evaluation tools like the STEVAL-ILL067V1 reference design. The device addresses the need for compact, high-reliability drivers in space-constrained automotive and consumer electronics displays.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing boost converter topologies if considering alternative drivers.