Atmel LED Driver-MSL3082
8-string, High-power, White or RGB LED Driver for TV,
Blacklighting, or Intelligent Solid-state Lighting
Datasheet BriefAtmel LED Driver-MSL3082
8-string, High-power, White or RGB LED Driver for TV,
Blacklighting, or Intelligent Solid-state Lighting
2
The MSL3082 features a 1MHz I C serial interface. The interface supports
video frame-by-frame LED string intensity control for up to 16 interconnected
devices, allowing active area dimming when used for video displays. The
General Description
advanced PWM engine synchronizes with the video signal, and offers phase
shifted string drive, virtually eliminating waterfall noise and motion blur.
The MSL3082 adaptively controls the DC-DC converters that power the LED
The Atmel LED Driver-
strings, using patented Atmel's Adaptive SourcePower technology. These
MSL3082 compact, high-
efficiency optimizers minimize power use while maintaining LED current
power LED string driver uses
accuracy, and allow up to eight interconnected devices to automatically
negotiate the optimum power supply voltage.
external MOSFETs to provide
A unique combination of peak current control and pulse width dimming
up to at least 500mA per
management offers simple full-screen brightness control, versatile area
string, with current accuracy
dimming, and a consistent white point. LED string current is set for each string
and matching better than
using a current sense (FET source) resistor. LED current is also digitally
controlled for all eight LED strings. Global string drive pulse width is adjusted
1%. The MSL3082 drives
with a 6-bit global intensity register, and individual string pulse width is
eight parallel strings of LEDs,
modulated with 8-bit control. Additionally, the MSL3082 optionally throttles
and offers fault detection and
back the PWM on time of all strings when the temperature of the LEDs
exceeds a programmable threshold.
management of open and
short circuit LEDs.
The MSL3082 monitors for string open circuit, LED short circuit, loss-of-sync,
and over-temperature faults, and provides a hardware fault output to notify the
MCU. Detailed fault status and control are available through the serial interface.
Additionally, the MSL3082 includes an on-chip EEPROM that allows the
power-up default register settings to be customized via the serial interface.
The MSL3082 is offered in a 7 x 7 x 0.85mm, 44-pin QFN package, and
operates over a -40C to +105C temperature range.
Applications
Edge-lit LED Backlit TVs
High-contrast Monitors
Medical and Industrial Displays
High-power LED Arrays
Multi-string LED Lighting
Intelligent Solid-state Lighting (SSL)
Ordering Information
PART INTERFACE PACKAGE
MSL3082CS 8-channel LED driver 44-pin, 7x7x0.85mm QFN
2 Atmel LED Driver-MSL3082