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MSL3164BT Datasheet(PDF) 2 Page - ATMEL Corporation |
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MSL3164BT Datasheet(HTML) 2 Page - ATMEL Corporation |
2 / 20 page 2 Atmel LED Drivers-MSL3163/MSL3164 General Description The Atmel LED Drivers- MSL3163 and MSL3164 compact, high-power LED string drivers use internal current control MOSFETs to sink up to 100mA per string, with current accuracy and matching better than 3%. The MSL3163/4 drive 16 parallel strings of ten white LEDs each, for a total of 160 white LEDs per device. Sixteen interconnected devices control up to 2560 white LEDs. Atmel LED Drivers-MSL3163 and MSL3164 16-string White & RGB LED Drivers with Adaptive Power Control, E²PROM, and SPI/I²C/SMBus Serial Interface The MSL3163/4 adaptively controls the DC-DC converters that power the LED strings, using Atmel's Adaptive SourcePower technology. These Efficiency Optimizers minimize power use while maintaining LED current accuracy. The MSL3164 features a 20 MHz SPI serial interface, and the MSL3163 offers a 1 MHz I2C serial interface. Both interfaces support video frame-by-frame LED string intensity control for up to 16 interconnected devices to allow active area dimming. The devices include an advanced PWM engine that easily synchronizes to a video signal, and per-string phase adjustment to reduce unwanted LCD artifacts such as motion blur. Additionally, an on-chip E²PROM allows the power-up defaults to be customized through the serial interface. A unique combination of peak current control and pulse width management offer simple full screen brightness control, versatile area dimming and a consistent white point. One external resistor provides the global peak reference current for all LED strings, and global peak current fine-tuning is available through an 8-bit register. Global string drive pulse width is adjusted with an 8-bit global intensity register, and individual string pulse width is modulated with 12-bit registers. The MSL3163/4 feature fault monitoring of open circuit, short circuit, loss of video sync and over temperature conditions, and provides a fault output to notify the system controller. Detailed fault status and control are available through the serial interface. The MSL3163/4 are offered in a 6 x 6 x 0.75mm, 40-pin TQFN package and operate over the -40°C to 85°C temperature range. Applications Long Life, Efficient LED Backlighting For: • Televisions and Desktop Monitors • Medical and Industrial Instrumentation • Automotive Audio-visual Displays Channel Signs Architectural Lighting Ordering Information 16-CHANNEL LED STRING DRIVERS PART INTERFACE PACKAGE MSL3163BT I2C interface 40 pin, 6 x 6 x 0.75mm TQFN MSL3164BT SPI interface 40 pin, 6 x 6 x 0.75mm TQFN |
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