Datasheet Linear Technology LT3909EDD#PBF — 数据表

LT3909
2-String Г— 60mA,
2MHz Step-Up LED Driver
with В±2% Current Matching
DESCRIPTION FEATURES
Up to 36V of LEDs, 2-String Г— 60mA LED Driver
nn Wide Input Range: 2.9V to 40V
nn Up to 40,000:1 PWM Dimming (250ns LED On-Time)
(Independent of Leakage at VOUT)
nn В±2% LED Current Matching (Typ В±0.3%)
nn Integrated Schottky Diode
nn Internal 400mО©, 40V, 1A Switch
nn Single Resistor Sets LED Current (10mA to 60mA)
for Both High-Side Current Sources
nn Output Adapts to LED V for Optimum Efficiency
F
nn LED Current Regulated Even for V > V
IN
OUT
nn Fault Flag + Protection for Open-LED and LED-Shortto-GND (Other String Remains in Regulation)
nn Programmable Maximum V
OUT (Regulated)
nn Internal Compensation, Soft-Start and Thermal …