Datasheet Analog Devices LT3476EUHF#TRPBF — 数据表

LT3476
High Current
Quad Output LED Driver
Features Description True Color PWMTM Dimming Delivers Up to 5000:1
Dimming Ratio (In Boost Configuration)
n LED Current Regulation with High-Side Sense
n VADJ Pin Accurately Sets LED Current Sense
Threshold Over Range 10mV to 120mV
n Four Independent Driver Channels with 1.5A, 36V
Internal NPN Switches
n Frequency Adjust Pin: 200kHz to 2MHz
n High Efficiency Conversion = Up to 96%
n Open LED Protectio Low Shutdown Current < 10µA
n Wide V Range: 2.8V to 16V
IN
n Thermally Enhanced, 38-Lead, 5mm × 7mm
QFN Package The LT®3476 is a quad output DC/DC converter designed
to operate as a constant-current source for driving high
current LEDs. A fixed frequency, current mode architecture
results in stable operation over a wide range of supply and
output voltages. A frequency adjust pin allows the user to
program switching frequency between 200kHz and 2MHz
to optimize efficiency and external component size. n The LT3476 senses output current at the high side of …