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MSL3167/MSL3168

MSL3167/MSL3168 Complete

(文件大小: 1520304, 16 页数, 修订版 A, 更新时间: 06/2011)
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The MSL3168 compact, high-power, 16 parallel string LED driver feature internal current control MOSFETs that can sink up to 30mA per LED string with better than 3% accuracy. These devices drive up to 10 white LEDs per string, for up to 160 LEDs per MSL3168. A single PWM input controls the PWM period and duty cycle for all strings.

The MSL3168 include automatic fault management of string open circuit, short circuit and over-temperature conditions. Faults are alerted on the FLTB pin, and fault status is optionally available through the I2C/SMBus-compatible serial interface.

The MSL3168 adaptively control the DC-DC converter that powers the LED strings using mSilica's Adaptive SourcePower™ technology. This Efficiency Optimizer minimizes power use while maintaining LED current accuracy.

A single, external resistor provides the global reference current for all the LED strings. The MSL3168 calculates and applies a 1/16th PWM period delay to successive strings to evenly spread the string power supply load across time.

关键参数

参数

Interface Type:

PWM + I2C

Number of Strings:

16

Max Current per String:

30mA

LEDs per String:

10

Max String Match:

3.0%

String Current Global:

R

String PWM Global:

PWM

String Phasing:

Auto

External VSYNC:

PWM

DC/DC EO:

1