LT8500ETJ#TRPBF

LED Driver IC Overview

The LT8500ETJ#TRPBF is a 48-channel pulse width modulation (PWM) generator designed for LED lighting applications. It operates from a single 3 V to 5.5 V supply and features a 50 MHz cascadable serial interface. Each of the 48 independent channels includes an individually adjustable 12-bit (4096-step) PWM register and a 6-bit (64-step) ±50% correction register. The device supports driving resistor-ballasted LED strings directly from the VDD rail, offering precise dimming control with low supply current characteristics.

LED Driver IC Feature Summary

• Provides 48 independent PWM channels with individual 12-bit resolution control
• Integrates 6-bit correction registers for per-channel amplitude adjustment
• Supports high-speed 50 MHz cascadable serial interface for data input
• Operates on a single low-voltage power supply ranging from 3 V to 5.5 V

LED Driver IC Applications

• Driving multiple resistor-ballasted LED strings from a VDD rail
• Implementing 48 digital-to-analog converter (DAC) channels
• High-resolution LED dimming systems requiring independent channel control
• Multi-zone lighting arrays utilizing cascaded serial interfaces

LED Driver IC Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the tape and reel packaging format required for automated assembly processes. Confirm the component status as obsolete or active through official Analog Devices channels prior to procurement, as availability may vary. Ensure the 56-pin TLA QFN EP package dimensions align with the target PCB footprint design specifications.

LED Driver IC Selection Notes

Select this component when a high channel count with fine 12-bit resolution is required for uniform LED brightness control. The integrated correction registers allow for manual gain adjustments to compensate for LED manufacturing variations. Consider the 50 MHz serial interface speed if system throughput requirements demand rapid data updates across all 48 channels simultaneously.

LED Driver IC Part Context

The LT8500 series represents a family of multi-channel PWM generators optimized for complex lighting architectures. The ETJ variant specifically denotes the commercial temperature range and plastic package configuration within the broader product line. This part serves as a central controller for managing large-scale LED arrays where individual channel precision is critical for visual quality.

LED Driver IC Replacement Considerations

LT8500ETJ#PBF is a confirmed substitute part number representing the same functional device in tube packaging rather than tape and reel.

LED Driver IC FAQ

What is the resolution of the PWM control for each channel?

Each channel features an individually adjustable 12-bit PWM register, providing 4096 distinct steps for precise duty cycle control.

How does the device handle amplitude correction?

Each channel includes a 6-bit correction register that allows for ±50% adjustment of the output amplitude to compensate for component tolerances.