LTC3824 - High Voltage Step-Down Controller With 40µA Quiescent Current

Features

  • Wide Input Range: 4V to 60V
  • Current Mode Constant Frequency PWM
  • Very Low Dropout Operation: 100% Duty Cycle
  • Programmable Switching Frequency:
     200kHz to 600kHz
  • Selectable High Efficient Burst Mode® Operation:
     40µA Quiescent Current
  • Easy Synchronization
  • 8V, 2A Gate Drive (VCC > 10V) for Industrial High Voltage P-Channel MOSFET
  • Programmable Soft-Start
  • Programmable Current Limit
  • Available in a Small 10-Pin Thermally Enhanced MSE Package
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LTC3824 Typical Application
LTC3824 Typical Application

Description

The LTC3824 is a step-down DC/DC controller designed to drive an external P-channel MOSFET. With a wide input range of 4V to 60V and a high voltage gate driver, the LTC3824 is suitable for many industrial and automotive high power applications. Constant frequency current mode operation provides excellent performance.

The LTC3824 can be configured for Burst Mode operation. Burst Mode operation enhances low current efficiency (only 40µA quiescent current) and extends battery run time. The switching frequency can be programmed up to 600kHz and is easily synchronizable.

Other features include current limit, soft start, micropower shutdown, and Burst Mode disable.

The LTC3824 is available in a 10-lead MSE power package.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
Drawing
RoHS
LTC3824EMSE#PBF MS-10E MSE E 05-08-1664 Yes
LTC3824EMSE#TRPBF MS-10E MSE E 05-08-1664 Yes
LTC3824HMSE#PBF MS-10E MSE H 05-08-1664 Yes
LTC3824HMSE#TRPBF MS-10E MSE H 05-08-1664 Yes
LTC3824IMSE#PBF MS-10E MSE I 05-08-1664 Yes
LTC3824IMSE#TRPBF MS-10E MSE I 05-08-1664 Yes
LTC3824MPMSE MS-10E MSE MP 05-08-1664 No
LTC3824MPMSE#PBF MS-10E MSE MP 05-08-1664 Yes
LTC3824MPMSE#TR MS-10E MSE MP 05-08-1664 No
LTC3824MPMSE#TRPBF MS-10E MSE MP 05-08-1664 Yes


LTC3824 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
LTC3824EMSE#PBF MS-10E E $2.78 $1.95 Yes
LTC3824EMSE#TRPBF MS-10E E $2.01 Yes
LTC3824HMSE#PBF MS-10E H $3.64 $2.55 Yes
LTC3824HMSE#TRPBF MS-10E H $2.61 Yes
LTC3824IMSE#PBF MS-10E I $3.34 $2.34 Yes
LTC3824IMSE#TRPBF MS-10E I $2.40 Yes
LTC3824MPMSE MS-10E MP $4.96 $3.47 No
LTC3824MPMSE#PBF MS-10E MP $4.96 $3.47 Yes
LTC3824MPMSE#TR MS-10E MP $3.53 No
LTC3824MPMSE#TRPBF MS-10E MP $3.53 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
DC960A LTC3824EMSE Demo Board | 5.5V ≤ Vin ≤ 60V, Vout: 5V/2A $100.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data 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
LTC3824HMSE#PBF MS-10E H $3.64 $2.55 Yes
LTC3824HMSE#TRPBF MS-10E H $2.61 Yes
LTC3824IMSE#PBF MS-10E I $3.34 $2.34 Yes
LTC3824IMSE#TRPBF MS-10E I $2.40 Yes
LTC3824MPMSE#PBF MS-10E MP $4.96 $3.47 Yes
LTC3824MPMSE#TRPBF MS-10E MP $3.53 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

  • Industrial and Automotive Power Supplies
  • Telecom Power Supplies
  • Distributed Power Systems

Product Notifications

Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.

Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.

Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, 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

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice:
LTC3824

Technical Support