Features and Benefits
- 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
The LTC4415 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.
- 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
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Tools & Simulations
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:
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Sample & Buy
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 Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.