Datasheet Analog Devices LT3744IUHE#PBF — Ficha de datos

LT3744
High Current Synchronous
Step-Down LED Driver
Features Description Ideal for Driving Up to 40A LEDs
n Up to 3000:1 PWM Dimming
n 20:1 Analog Dimming
n ±3% Current Regulation Accuracy
n ±3% Voltage Regulation Accuracy
n Unique Inverting Buck-Boost Topology Allows
Grounded Heat Sink to Be Used for RGB LEDs
n 3.3V to 36V Input Voltage Range
n Peak Current Mode with DC LED Current Sensing
n Open and Shorted LED Protection and Fault Reporting
n Floating LED Driver Allows Single Power Solution
to Drive Multicolor LEDs or Single LED with Three
Different Regulated Currents
n Thermally Enhanced 5mm × 6mm QFN 36-Lead
Package The LT®3744 is a fixed frequency synchronous step-down
DC/DC controller designed to drive a LED load at up to 20A
continuous or 40A pulsed. The peak current mode controller
will maintain ±3% LED current regulation over a wide output
voltage range, from VEE to VIN. By allowing VEE to float
to negative voltages, several LEDs in series can be driven …