A8508GLPTR-T

LED Driver IC Overview

The A8508GLPTR-T is a multi-output white LED driver designed for LCD panel backlighting applications. It integrates a current-mode boost controller and eight individual high-current sinks, supporting wide input voltage ranges from 9 to 40 V. The device features active current sharing with 0.7% accuracy and allows parallel operation of up to four controllers for scaling. Protection mechanisms include overtemperature, open/shorted LED pin, and pulse-by-pulse current limit.

LED Driver IC Feature Summary

• Integrates a current-mode boost controller with eight independent current sinks for flexible LED string configurations
• Supports parallel master-slave operation to scale up to 32 LED strings using a single boost regulator
• Provides active current sharing between LED strings ensuring precise matching and uniform brightness
• Includes comprehensive protection features such as overtemperature shutdown and LED fault detection

LED Driver IC Applications

• LCD panel backlighting systems
• Multi-string white LED driver circuits
• High-efficiency SEPIC configuration designs
• Wide input voltage range power solutions

LED Driver IC Procurement Notes

Verify the specific suffix GLPTR-T against official Allegro MicroSystems documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with required switching frequencies and thermal management requirements for the target application environment before finalizing procurement orders.

LED Driver IC Selection Notes

Select this component when designing multi-output LED drivers requiring high efficiency and precise current matching across multiple strings. Consider the integrated boost controller architecture for simplified bill of materials and reduced external component count compared to discrete solutions.

LED Driver IC Part Context

The A8508 belongs to Allegro MicroSystems' portfolio of advanced LED driver solutions. It is engineered for high-performance backlighting in consumer electronics and industrial displays, offering scalability through parallel operation capabilities while maintaining robust protection features for reliable long-term operation.

LED Driver IC Replacement Considerations

Consult official Allegro MicroSystems cross-reference lists for verified substitutes. Generic replacements may not match the specific current-sharing accuracy or parallel control logic required for complex multi-string configurations.