LTC4219 - 5A Integrated Hot Swap Controller

Features

  • Small Footprint
  • 33mΩ MOSFET with RSENSE
  • Available in Preset 12V and 5V Versions
  • Adjustable, 10% Accurate Current Limit
  • Current and Temperature Monitor Outputs
  • Overtemperature Protection
  • Adjustable Current Limit Timer Before Fault
  • Power Good and Fault Outputs
  • Adjustable Inrush Current Control
  • Available in 16-Lead 5mm x 3mm DFN Packages
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages


Typical Application

LTC4219 Typical Application
LTC4219 Typical Application

Description

The LTC4219 is an integrated solution for Hot Swap applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a Hot Swap controller, power MOSFET and current sense resistor in a single package for small form factor applications.

The LTC4219 provides separate inrush current control and a 10% accurate 5.6A current limit with foldback current limiting. The current limit threshold can be adjusted dynamically using an external pin. Additional features include a current monitor output that amplifies the sense resistor voltage for ground referenced current sensing and a MOSFET temperature monitor output. Thermal limit and power good monitoring are also provided. The power good detection level and foldback current limit profile are internally preset for 5V (LTC4219-5) and 12V (LTC4219-12) applications.

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
LTC4219CDHC-12#PBF 5x3 DFN-16 DHC C 05-08-1706 Yes
LTC4219CDHC-12#TRPBF 5x3 DFN-16 DHC C 05-08-1706 Yes
LTC4219CDHC-5#PBF 5x3 DFN-16 DHC C 05-08-1706 Yes
LTC4219CDHC-5#TRPBF 5x3 DFN-16 DHC C 05-08-1706 Yes
LTC4219IDHC-12#PBF 5x3 DFN-16 DHC I 05-08-1706 Yes
LTC4219IDHC-12#TRPBF 5x3 DFN-16 DHC I 05-08-1706 Yes
LTC4219IDHC-5#PBF 5x3 DFN-16 DHC I 05-08-1706 Yes
LTC4219IDHC-5#TRPBF 5x3 DFN-16 DHC I 05-08-1706 Yes


LTC4219 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
LTC4219CDHC-12#PBF 5x3 DFN-16 C $4.79 $3.35 Yes
LTC4219CDHC-12#TRPBF 5x3 DFN-16 C $3.41 Yes
LTC4219CDHC-5#PBF 5x3 DFN-16 C $4.79 $3.35 Yes
LTC4219CDHC-5#TRPBF 5x3 DFN-16 C $3.41 Yes
LTC4219IDHC-12#PBF 5x3 DFN-16 I $5.74 $4.02 Yes
LTC4219IDHC-12#TRPBF 5x3 DFN-16 I $4.08 Yes
LTC4219IDHC-5#PBF 5x3 DFN-16 I $5.74 $4.02 Yes
LTC4219IDHC-5#TRPBF 5x3 DFN-16 I $4.08 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
DC1594A-A LTC4219-12 12V, 5A Integrated Hot Swap Controller $50.00
DC1594A-B LTC4219-5 5V, 5A Integrated Hot Swap Controller $50.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

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
LTC4219IDHC-12#PBF 5x3 DFN-16 I $5.74 $4.02 Yes
LTC4219IDHC-12#TRPBF 5x3 DFN-16 I $4.08 Yes
LTC4219IDHC-5#PBF 5x3 DFN-16 I $5.74 $4.02 Yes
LTC4219IDHC-5#TRPBF 5x3 DFN-16 I $4.08 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

  • RAID Systems
  • Server I/O Cards
  • Industrial

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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:
LTC4219-12
LTC4219-5

Technical Support