General Description

The Atmel® LED Driver MSL3082 compact, high power LED string driver uses external MOSFETs to provide up to at least 500mA per string, with current accuracy and matching better than ±1. The MSL3082 drives eight parallel strings of LEDs, and offers fault detection and management of open and short circuit LEDs.

Key Features

• 8-bit PWM String Dimming

• Fast, 1MHz I2C/Smbus Interface Supports up to 16 Devices per Bus

• 4-bit Adaptive Power Correction Maximizes Efficiency

• External Mosfets Allow >0.5a LED String Current

• Drives up to Eight Parallel, High-power Led Strings

• Multiple MSL3082s Share String Supply and Automatically Negotiate Optimum Voltage

• Supports Adaptive, Real-time 2-D Area Dimming for Highest Dynamic Range LCD TVs and Monitors

• Programmable String Phase Virtually Eliminates Motion Blur and Improves Efficiency

• Global LED Intensity Control via Serial Interface

• Supports Direct Pwm Control of all Led Strings with a Single Pwm Input Signal

• ±1 Current Accuracy and Current Balance

• Video Frame (Vsync) and Line (Hsync) Sync Inputs

• Sync Loss Detectors Optionally Disable Led Strings

• Internal Eeprom Allows Custom Power-up Default Settings

• String Open Circuit and Led Short Circuit Fault Detection

• <1µA LED String Off-leakage Current

• External Resistors Set Individual String Peak Current

• Programmable LED Over-temperature Compensation

• Automatic Die Over-temperature Protection

• I2C/SMBus Broadcast Mode Simplifies Configuration

• -40°C to +105°C Operating Temperature Range

• Lead-free, Halogen-free, RoHS-compliant Package

Applications

• Edge-lit LED Backlit TVs

• High-contrast Monitors

• Medical and Industrial Displays

• High-power LED Arrays

• Multi-string LED Lighting

• Intelligent Solid-state Lighting (SSL)