LT3763 - 60V High Current Step-Down LED Driver Controller

Features

  • Accurately Control Input and Output Current
  • 3000:1 True Color PWM™ Dimming
  • ±1.5% Voltage Regulation Accuracy
  • ±6% Current Regulation Accuracy
  • 6V to 60V Input Voltage Range
  • Wide Output Range Up to 55V
  • <2µA Shutdown Current
  • Control Pin for Thermal Control of Load Current
  • Input and Output Current Monitor and Limit
  • Open, Short, and C/10 Fault Detection
  • PWM Driver Output for LED Applications
  • Thermally Enhanced 28-Lead FE Package
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages


Typical Application

LT3763 Typical Application
LT3763 Typical Application

Description

The LT3763 is a fixed frequency, synchronous, step-down DC/DC controller designed to accurately regulate output currents up to 20A. The average current mode control- ler will maintain inductor current regulation over a wide output voltage range from 0V to 55V. Output current is set by analog voltages on the CTRL pins and an external sense resistor. Voltage regulation and overvoltage protection are set with a voltage divider from the output to the FB pin. The switching frequency is programmable from 200kHz to 1MHz through an external resistor on the RT pin or with the SYNC pin and an external clock signal. Input and output current sensing provides input current limiting and an accurate measurement of these currents. The FBIN pin is provided for applications requiring a peak power tracking function.

Additional features include an accurate external reference voltage for use with the CTRL pins, an accurate UVLO/EN pin that allows for programmable UVLO hysteresis, a PWM driver for LED applications, output voltage fault detection, and thermal shutdown.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT3763EFE#PBF TSSOP-28 FE E 05-08-1663 (EB) Yes
LT3763EFE#TRPBF TSSOP-28 FE E 05-08-1663 (EB) Yes
LT3763HFE#PBF TSSOP-28 FE H 05-08-1663 (EB) Yes
LT3763HFE#TRPBF TSSOP-28 FE H 05-08-1663 (EB) Yes
LT3763IFE#PBF TSSOP-28 FE I 05-08-1663 (EB) Yes
LT3763IFE#TRPBF TSSOP-28 FE I 05-08-1663 (EB) Yes


LT3763 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3763EFE#PBF TSSOP-28 E $6.36 $4.45 Yes
LT3763EFE#TRPBF TSSOP-28 E $4.51 Yes
LT3763HFE#PBF TSSOP-28 H $7.36 $5.15 Yes
LT3763HFE#TRPBF TSSOP-28 H $5.21 Yes
LT3763IFE#PBF TSSOP-28 I $7.00 $4.90 Yes
LT3763IFE#TRPBF TSSOP-28 I $4.96 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1831A LT3763 Demo Board I High Power CC/CV Synchronous Buck LED Driver Controller $175.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Appications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3763HFE#PBF TSSOP-28 H $7.36 $5.15 Yes
LT3763HFE#TRPBF TSSOP-28 H $5.21 Yes
LT3763IFE#PBF TSSOP-28 I $7.00 $4.90 Yes
LT3763IFE#TRPBF TSSOP-28 I $4.96 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • High Power Architectural Lighting
  • Automotive Lighting
  • Aviation and Marine Strobe Lights
  • Solar-Powered Chargers, Laser Diodes

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Design Tools

LTspiceIV

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LT3763

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