Datasheet Texas Instruments LM3431AQMHX/NOPB — Ficha de datos

LM3431
www.ti.com SNVS547G – NOVEMBER 2007 – REVISED MAY 2013 3-Channel Constant Current LED Driver with Integrated Boost Controller
Check for Samples: LM3431 FEATURES DESCRIPTION The LM3431 is a 3-channel linear current controller
combined with a boost switching controller ideal for
driving LED backlight panels in space critical
applications. The LM3431 drives 3 external NPN
transistors or MOSFETs to deliver high accuracy
constant current to 3 LED strings. Output current is
adjustable to drive strings in excess of 200 mA. The
LM3431 can be expanded to drive as many as 6 LED
strings. 1 2 LM3431Q/LM3431AQ are Automotive Grade
Products that are AEC-Q100 Grade 1 Qualified
(–40°C to 125°C operating junction
temperature)
3-Channel Programmable LED Current
High Accuracy Linear Current Regulation
Analog and Digital PWM Dimming Control
Up to 25kHz Dimming Frequency
>100:1 Contrast Ratio
Integrated Boost Controller
5V-36V Input Voltage Range
Adjustable Switching Frequency up to 1MHz
LED Short and Open Protection …