Features and Benefits
- Wide Operating Voltage Range: 4V to 80V
- Withstands Surges Over 80V with VCC Clamp
- Adjustable Output Clamp Voltage
- Ideal Diode Controller Holds Up Output Voltage During Input Brownouts
- Reverse Input Protection to -40V
- Reverse Output Protection to -20V
- Overcurrent Protection
- Low 10μA Shutdown Current at 12V
- Adjustable Fault Timer
- 0.1% Retry Duty Cycle During Faults (LTC4364-2)
- Available in 4mm x 3mm 14-Lead DFN, 16-Lead MSOP, and 16-Lead SO Packages
- AEC-Q100 Qualified for Automotive Applications
The LTC4364 surge stopper with ideal diode controller protects loads from high voltage transients. It limits and regulates the output during an overvoltage event, such as load dump in automobiles, by controlling the voltage drop across an external N-channel MOSFET pass device. The LTC4364 also includes a timed, current limited circuit breaker. In a fault condition, an adjustable fault timer must expire before the pass device is turned off. The LTC4364-1 latches off the pass device while the LTC4364-2 automatically restarts after a delay. The LTC4364 precisely monitors the input supply for overvoltage (OV) and undervoltage (UV) conditions. The external MOSFET is held off in undervoltage and auto-retry is disabled in overvoltage.
An integrated ideal diode controller drives a second MOSFET to replace a Schottky diode for reverse input protection and output voltage holdup. The LTC4364 controls the forward voltage drop across the MOSFET and minimizes reverse current transients upon power source failure, brownout or input short.
- Automotive/Avionic Surge Protection
- Hot Swap/Live Insertion
- Redundant Supply ORing
- Output Port Protection
Markets and Technologies
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Documentation & Resources
R547 Reliability Data3/26/2018
DC2027A - Demo Manual3/14/2013
Ideal Diodes and Prioritizers6/8/2018
LTspice: Using Time-Dependent Exponential Sources to Model Transients5/15/2016
Surge Stopper with Ideal Diode Protects Input and Output10/1/2012 LT Journal
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:
LTC4364 Companion Parts
Recommended Related Parts
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.