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Atmel LED Driver-MSL2162
16-string White and RGB LED Driver with
Adaptive Configuration, EEPROM, and SPI Bus
The MSL2162 features a 20 MHz SPI bus that supports video frame-by-frame
LED string intensity control for up to eight interconnected devices. Frame-by-
General Description
The Atmel LED Driver-
MSL2162 compact, high-
power LED string driver
uses external current control
MOSFETs to sink up to
350mA per string, with
current accuracy and matching
better than 1.5%. The
MSL2162 drives 16 parallel
strings of LEDs, and offers fault
detection and management of
open and short circuit LEDs.
frame control allows active area dimming and phase shifted PWM timing for
improved backlight performance. The advanced PWM engine synchronizes
PWM dimming to the video signals for reduced motion blur and waterfall noise.
The MSL2162 adaptively controls the DC-DC converters powering the
LED strings, using Atmel efficiency optimizers to minimize power use while
maintaining LED current accuracy.
A unique combination of regulation current control and pulse width dimming
management offers simple, full-screen brightness control, versatile area
dimming, and a consistent white point. A current sense resistor sets LED current
for each string, offering the flexibility to drive each string with a different current.
8-bit control adjusts LED current equally for all 16 LED strings. Separate 12-bit
registers control individual string pulse width dimming.
The MSL2162 monitors LED strings for open circuit, short circuit, loss-of-video-
sync, and over-temperature faults, and provides a hardware fault output to
notify a microcontroller. Use the serial interface for detailed fault status and
control. Additionally, the MSL2162 includes on-chip EEPROM that allows
customization of the power-up defaults, accessible through the serial interface.
The MSL2162 is packaged in a 9 x 9 x 0.85mm, 64-lead TQFN, and operates
over a -40°C to 105°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
2
PART
MSL2162DQ
INTERFACE
SPI
PACKAGE
64-pin, 9 x 9 x 0.85mm TQFN
Atmel LED Driver-MSL2162
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