Analog Devices LT3744 | Demoboard 1930A

Description

Demonstration circuit 1930A is a high current synchronous inverting buck-boost LED driver featuring the LT®3744. The unique drive stage used on the LT3744 allows the anodes of three LEDs to be connected together for better heat sinking in both the step-down configuration and the inverting buck-boost configuration. The pros and cons of each configuration can be found in the data sheet. This demonstration circuit 1930A is for customers to test the inverting buck-boost configuration. The step-down configuration is shown in a separate demonstration circuit DC2339A.

Features

• Ideal for Driving Up to 40A LEDs
• Up to 3000:1 PWM Dimming
• 20:1 Analog Dimming
• ±3% Current Regulation Accuracy
• ±3% Voltage Regulation Accuracy
• Unique Inverting Buck-Boost Topology AllowsGrounded Heat Sink to Be Used for RGB LEDs
• 3.3V to 36V Input Voltage Range
• Peak Current Mode with DC LED Current Sensing
• Open and Shorted LED Protection and Fault Reporting
• Floating LED Driver Allows Single Power Solution
• Drive Multicolor LEDs or Single LED with ThreeDifferent Regulated Currents
• Thermally Enhanced 5mm × 6mm QFN 36-LeadPackage

Typical applications

• LED Driver for DLP Projectors / Heads-Up Displays / High Power LED

More information

• Datasheet
• IC product information