IC-Hersteller Analog Devices

IC-Hersteller (95)

Analog Devices LT3744 | Demoboard 1930A

High Current Synchronous Step-Down LED Driver

Details

TopologieAbwärtswandler
Eingangsspannung7-30 V
Schaltfrequenz270-330 kHz
Ausgang 16.05 V / 12 A
IC-RevisionA

Beschreibung

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.

Eigenschaften

  • 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

Typische Anwendungen

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

Weiterführende Informationen

Artikeldaten