LTC4415 - Dual 4A Ideal Diodes with Adjustable Current Limit


  • Dual 50mΩ Monolithic Ideal Diodes
  • 1.7V to 5.5V Operating Range
  • Up to 4A Adjustable Current Limit for Each Diode
  • Low Reverse Leakage Current (1μA Max)
  • 15mV Forward Drop in Regulation
  • Smooth Switchover in Diode ORing
  • Load Current Monitor
  • Precision Enable Thresholds to Set Switchover
  • Soft-Start to Limit Inrush Current on Start-Up
  • Status Pins to Indicate Forward Diode Conduction
  • Current and Thermal Limit with Warning
  • Thermally Enhanced 16-Lead MSOP and DFN (3mm × 5mm) Packages

Typical Application

LTC4415 Typical Application
LTC4415 Typical Application


The LTC®4415 contains two monolithic PowerPath ideal diodes, each capable of supplying up to 4A with typical forward conduction resistance of 50mΩ. The diode voltage drops are regulated to 15mV during forward conduction at low currents, extending the power supply operating range and ensuring no oscillations during supply switchover. Less than 1μA of reverse current flows from OUT to IN making this device well suited for power supply ORing applications.

The two ideal diodes are independently enabled and prioritized using inputs EN1 and EN2. The output current limits can be adjusted independently from 0.5A to 4A using resistors on the CLIM pins. Furthermore, the ideal diode currents can be monitored via CLIM pin voltages.

Open-drain status pins indicate when the ideal diodes are forward conducting. When the die temperature approaches thermal shutdown, or if the output load exceeds the current limit threshold, the corresponding warning pins are pulled low.


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
LTC4415EDHC#PBF 5x3 DFN-16 DHC E 05-08-1872 Yes
LTC4415EDHC#TRPBF 5x3 DFN-16 DHC E 05-08-1872 Yes
LTC4415EMSE#PBF MS-16E MSE E 05-08-1667 Yes
LTC4415EMSE#TRPBF MS-16E MSE E 05-08-1667 Yes
LTC4415IDHC#PBF 5x3 DFN-16 DHC I 05-08-1872 Yes
LTC4415IDHC#TRPBF 5x3 DFN-16 DHC I 05-08-1872 Yes
LTC4415IMSE#PBF MS-16E MSE I 05-08-1667 Yes
LTC4415IMSE#TRPBF MS-16E MSE I 05-08-1667 Yes

LTC4415 Package Drawing
LTC4415 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
LTC4415EDHC#PBF 5x3 DFN-16 E $4.22 $2.95 Yes
LTC4415EDHC#TRPBF 5x3 DFN-16 E $3.01 Yes
LTC4415EMSE#PBF MS-16E E $4.22 $2.95 Yes
LTC4415EMSE#TRPBF MS-16E E $3.01 Yes
LTC4415IDHC#PBF 5x3 DFN-16 I $4.86 $3.40 Yes
LTC4415IDHC#TRPBF 5x3 DFN-16 I $3.46 Yes
LTC4415IMSE#PBF MS-16E I $4.86 $3.40 Yes
LTC4415IMSE#TRPBF MS-16E I $3.46 Yes
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* 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
DC1819A LTC4415EMSE Demo Board I Dual 4A Ideal Diodes with Adjustable Current Limit $125.00
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  • Supercapacitor ORing
  • Multiple Battery Sharing

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Design Tools


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