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Atmel LED Drivers-MSL2160/MSL2161

The MSL2160 features a 20MHz SPI bus, and the MSL2161 offers a 1MHz

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, loss-

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

serial interface. Additionally, the MSL2160/1 includes an on-chip EEPROM

that allows the power-up defaults to be customized via the serial interface.

The MSL2160/1 are offered in 9 x 9 x 0.85mm, 64-pin TQFN packages and

operate over a -40°C to +105°C temperature range.

Applications

Long Life, Efficient LED Backlighting for:

Channel Signs

Architectural Lighting

General Description

MSL2160 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.

Ordering Information

16-CHANNEL LED STRING DRIVERS

PART

INTERFACE

PACKAGE

MSL2160DQ

SPI

64-pin, 9 x 9 x 0.85mm TQFN

MSL2161DQ

64-pin, 9 x 9 x 0.85mm TQFN

Atmel LED Drivers-MSL2160/MSL2161

16-string, White and RGB LED Drivers with Adaptive Configuration,