MSL3085BT中文资料8-string White and RGB LED Driver with Adaptive Power Control, EEPROM, and I2C/SMBus Serial Interface数据手册Microchip规格书

描述 Description

General Description
The Atmel LED Driver MSL3085 compact, high power 8 LED strings controller uses external MOSFETs to sink up to 350mA per string, with current accuracy and matching better than ±1.5%. The MSL3085 drives eight parallel strings of LEDs, and offers fault detection and management of open and short circuit LEDs.Key

特性 Features

• 12-bit PWM String Dimming
• Fast, 1MHz I2C Serial Interface Supports up to Eight Devices per Bus
• 8-bit Adaptive Power Correction Maximizes Efficiency of up to Two String Power Supplies
• Multiple MSL3085s Share String Power Supplies and Automatically Negotiate the Optimum Supply Voltage
• External MOSFETs for high Voltage and/or Current
• Drives up to Eight Parallel LED Strings
• Supports Adaptive, Real-time Area Dimming for Highest Dynamic Range in LCD TVs and Monitors
• Programmable String Phase Reduces Motion Blur and Improves Efficiency
• Global Intensity Control via Serial Interface
• ±1.5% Current Accuracy and Current Balance
• Video Frame (VSYNC) and Line (HSYNC) Sync Inputs
• Sync Loss Detectors Optionally Disable LED Strings
• EEPROM Saves Power-on Default Settings
• LED Open Circuit and Short Circuit Fault Detection
• Individual Fault Detection Enable for Each String
• Over-temperature Shut-Off Protection
• Broadcast Write Simplifies Configuration
• -40°C To +105°C Operating Temperature RangeApplications
   Long Life, Efficient LED Backlighting for:
     
• Televisions and Desktop Monitors
     
• Medical and Industrial Instrumentation
     
• Automotive Audio-visual Displays
   Channel Signs
   Architectural Lighting

应用 Application

Long Life, Efficient LED Backlighting for:
     
• Televisions and Desktop Monitors
     
• Medical and Industrial Instrumentation
     
• Automotive Audio-visual Displays
   Channel Signs
   Architectural Lighting

简介

MSL3085BT属于集成电路（IC）的LED驱动器。由制造生产的MSL3085BTLED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。