Alternative Parts
Overview
Features and Benefits
- Input Voltage Range: 8.5V to 100V
- Programmable Volt-Second Clamp
- High Efficiency Control: Active Clamp, Synchronous Rectification, Programmable Delays
- Short-Circuit (Hiccup Mode) Overcurrent Protection
- Programmable Soft-Start/Stop
- Programmable OVLO and UVLO with Hysteresis
- Programmable Frequency (100kHz to 500kHz)
- Synchronizable to an External Clock
Product Details
The LT3753 is a current mode PWM controller optimized for an active clamp forward converter topology, allowing up to 100V input operation.
A programmable volt-second clamp allows primary switch duty cycles above 50% for high switch, transformer and rectifier utilization. Active clamp control reduces switch voltage stress and increases efficiency. A synchronous output is available for controlling secondary side synchronous rectification.
The LT3753 is available in a 38-lead plastic TSSOP package with missing pins for high voltage spacings.
Applications
- Industrial, Automotive and Military Systems
- 48V Telecommunication Isolated Power Supplies
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (5)
Documentation & Resources
-
R530 Reliability Data3/26/2018
-
DC2324A - Demo Manual9/14/2016
-
DC2306A - Demo Manual8/24/2015
-
DC2050A - Demo Manual4/22/2014
-
400V+ Active Clamp Forward5/2/2014
-
Active Clamp Synchronous Forward Controllers10/15/2018
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
LT3753
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LT3753EFE#PBF | Material Declaration | Reliability Data | 38-Lead TSSOP w/ EP | |
| LT3753EFE#TRPBF | Material Declaration | Reliability Data | 38-Lead TSSOP w/ EP | |
| LT3753HFE#PBF | Material Declaration | Reliability Data | 38-Lead TSSOP w/ EP | |
| LT3753HFE#TRPBF | Material Declaration | Reliability Data | 38-Lead TSSOP w/ EP | |
| LT3753IFE#PBF | Material Declaration | Reliability Data | 38-Lead TSSOP w/ EP | |
| LT3753IFE#TRPBF | Material Declaration | Reliability Data | 38-Lead TSSOP w/ EP | |
| LT3753MPFE#PBF | Material Declaration | Reliability Data | 38-Lead TSSOP w/ EP | |
| LT3753MPFE#TRPBF | Material Declaration | Reliability Data | 38-Lead TSSOP w/ EP | |
| Wafer Fabrication Data | R530 Reliability Data |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
LT3753 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku 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 Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
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Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.