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MSL3162

MSL3162 Complete

(文件大小: 2149293, 20 页数, 修订版 A, 更新时间: 06/2011)
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The Atmel mSilica MSL3162 is a compact, high-power, 16-parallel-string LED driver. It uses internal current control MOSFETs to sink up to 100mA per LED string with better than 3% accuracy and with up to 10 series white LEDs per string, or 160 LEDs per MSL3162.

The advanced PWM engine is easily synchronized to the video signal and refresh timing using a built-in DLL multiplier and sync dividers. Per-string phase adjustment reduces unwanted LCD artifacts such as motion blur. Up to 16 MSL3162s can share the same 1MHz I2C/SMBus-compatible serial interface, which is fast enough for frame-by-frame LED string intensity control of 16 MSL3162s, or 2560 white LEDs in total.

The MSL3162 adaptively controls the voltage powering the LED strings using patented mSilica Efficiency Optimizer control. The Efficiency Optimizer minimizes LED driver power losses while maintaining high current accuracy.

The MSL3162 uses 6-bit analog (LED current) dimming as well as 10-bit PWM dimming control. PWM dimming is derived from the product of the 8-bit individual string PWM setting, the 6-bit global intensity, and the 8-bit thermal derating. One external resistor provides the global reference current for all the LED strings.

关键参数

参数

Interface Type:

I2C (PWM)

Number of Strings:

16

Max Current per String:

100mA

LEDs per String:

10

Max String Match:

3.0%

String Current Global:

R

String Current per String:

6 bits + R

String PWM Global:

6 bits

String PWM per String:

8 bits

String Phasing:

8 bits