Atmel LED Drivers
MSL2160/MSL2161
16-string, White and RGB LED Drivers with Adaptive Configuration,
2
EEPROM, and SPI/I C/SMBus Serial Interface
Datasheet BriefAtmel LED Drivers-MSL2160/MSL2161
16-string, White and RGB LED Drivers with Adaptive Configuration,
2
EEPROM, and SPI/I C/SMBus Serial Interface
The MSL2160 features a 20MHz SPI bus, and the MSL2161 offers a 1MHz
2
I C serial interface. Both interfaces support video frame-by-frame LED string
intensity control for up to eight interconnected devices, allowing active area
General Description
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 Atmel LED Drivers-
The MSL2160/1 adaptively controls the DC-DC converters that power the
MSL2160 and MSL2161
LED strings using Atmel's Adaptive SourcePower technology. This scheme
compact, high-power LED
optimizes power consumption without sacrificing LED current accuracy.
Peak LED string currents are set using current sense resistors, and global
string drivers use external
string current is adjustable with 8-bit control. Global string drive pulse width
current control MOSFETs to
is adjusted with an 8-bit global intensity register, and individual string pulse
sink up to 350mA per string,
width is modulated with 12-bit control.
with current accuracy and
The MSL2160/1 monitors the LED strings for open circuit, short circuit, loss-
matching better than 1.5%. of-sync, and over-temperature faults, and provide a hardware fault output
to notify the MCU. Detailed fault status and control are available through the
The MSL2160/1 drive 16
serial interface. Additionally, the MSL2160/1 includes an on-chip EEPROM
parallel strings of LEDs, and
that allows the power-up defaults to be customized via the serial interface.
offer fault detection and
The MSL2160/1 are offered in 9 x 9 x 0.85mm, 64-pin TQFN packages and
management of open and
operate over a -40C to +105C temperature range.
short circuit LEDs.
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
MSL2160DQ SPI 64-pin, 9 x 9 x 0.85mm TQFN
2
MSL2161DQ I C 64-pin, 9 x 9 x 0.85mm TQFN
2 Atmel LED Drivers-MSL2160/MSL2161