LTC4415 - Dual 4A Ideal Diodes with Adjustable Current Limit

Features

  • 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

Description

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.

Packaging

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

MS-16, DFN-16

LTC4415 Package Drawing
LTC4415 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC4415EDHC#PBF DFN 16 E $4.22 $2.95 View
LTC4415EDHC#TRPBF DFN 16 E $3.01 View
LTC4415EMSE#PBF MSOP 16 E $4.22 $2.95 View
LTC4415EMSE#TRPBF MSOP 16 E $3.01 View
LTC4415IDHC#PBF DFN 16 I $4.86 $3.40 View
LTC4415IDHC#TRPBF DFN 16 I $3.46 View
LTC4415IMSE#PBF MSOP 16 I $4.86 $3.40 View
LTC4415IMSE#TRPBF MSOP 16 I $3.46 View
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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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Applications

  • High Current PowerPath™ Switch
  • Battery and Wall Adapter Diode ORing
  • Backup Battery Diode ORing
  • Logic Controlled High Current Power Switch
  • Supercapacitor ORing
  • Multiple Battery Sharing

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Design Tools

LTspiceIV

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Models for the following parts are available in LTspice IV:
LTC4415

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