White and RGB LED Drivers - ATMEL Corporation
Description
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Atmel LED Drivers MSL2160/MSL2161
16-string, White and RGB LED Drivers with Adaptive Configuration, EEPROM, and SPI/I2C/SMBus Serial Interface
Datasheet Brief
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Atmel LED Drivers-MSL2160/MSL2161
16-string, White and RGB LED Drivers with Adaptive Configuration, EEPROM, and SPI/I2C/SMBus Serial Interface
General Description
The Atmel® LED DriversMSL2160 and MSL2161 compact, high-power LED string drivers use external current control MOSFETs to sink up to 350mA per string, with current accuracy and matching better than 1.
5%.
The MSL2160/1 drive 16 parallel strings of LEDs, and offer fault detection and management of open and short circuit LEDs.
The MSL2160 features a 20MHz SPI bus, and the MSL2161 offers a 1MHz I2C serial interface.
Both interfaces support video frame-by-frame LED string intensity control for up to eight interconnected devices, allowing active area dimming and phase shifted PWM dimming for improved performance.
Both devices include an advanced PWM engine that synchronizes PWM dimming to the video signal for reduced motion blur and waterfall noise.
The MSL2160/1 adaptively controls the DC-DC converters that power the LED strings using Atmel's Adaptive SourcePower™ technology.
This scheme optimizes power consumption without sacrificing LED current accuracy.
Peak LED string currents are set using current sense resistors, and global string current is adjustable with 8-bit control.
Global string drive pulse width is adjusted with an 8-bit global intensity register, and individual string pulse width is modulated with 12-bit control.
The MSL2160/1 monitors the LED strings for open circuit, short circuit, lossof-sync, and over-temperature faults, and provide a hardware fault output to notify the MCU.
Detailed fault status and control are available through the serial interface.
Additionally, the MSL2160/1 includes an on-chip EEPROM that allows the power-up defaults to be cust...
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