Datasheet

3Atmel LED Drivers-MSL3163/MSL3164
Atmel LED Drivers-MSL3163 and MSL3164Atmel LED Drivers-MSL3163 and MSL3164
16-string White & RGB LED Drivers with Adaptive Power
Control, E²PROM, and SPI/I²C/SMBus Serial Interface
Key Features
Application Circuit
• 12-bit PWM String Dimming Operates at 240Hz
• Fast Serial Interfaces Support up to 16 Devices
per Bus:
- MSL3164 20 MHz SPI
- MSL3163 1 MHz I
2
C
• 8-bit Adaptive Power Correction Maximizes
Efficiency of up to Three String Power Supplies
• Drives 16 Parallel LED Strings of 10 White LEDs
Each for up to 2560 White LEDs per Serial Bus
• Supports Adaptive, Real-time Area Dimming for
Highest Dynamic Range LCD TVs and Monitors
• Programmable String Phase Reduces Motion Blur
• Global Intensity Control via Serial Interface
• 100mA Peak, 60mA Average LED String Current
• Single Resistor Sets Peak Current for all LED Strings
• ±3% Current Accuracy and Current Balance
• Video Frame (VSYNC) and Line (HSYNC) Sync
Inputs
• Sync Loss Detectors Optionally Disable LED Strings
• Multiple MSL3163/4s Share String Power
Supplies and Automatically Negotiate the
Optimum Supply Voltage
• E²PROM Allows Customized Power-On Defaults
• Less Than 1µA LED String Off-Leakage Current
• String Open Circuit and LED Short Circuit Fault
Detection
• Individual Fault Detection Enable for Each String
• Over-temperature Shutoff Protection
• Broadcast Write Simplifies Configuration
• -40°C To +85°C Operating Temperature Range
Ω