Alternative Parts

  • LTC4367
    LTC4367

    100V Overvoltage, Undervoltage and Reverse Supply Protection Controller

Overview

Features and Benefits

  • Wide Operating Voltage Range: 2.5V to 60V
  • Overvoltage Protection to 100V
  • Reverse Supply Protection to –40V
  • Bidirectional Electronic Circuit Breaker:
    • +50mV Forward Sense Threshold
    • –50mV Reverse (LTC4368-1)
    • –3mV Reverse (LTC4368-2)
  • Adjustable ±1.5% Undervoltage and Overvoltage Thresholds
  • Low Operating Current: 80μA
  • Low Shutdown Current: 5μA
  • Controls Back-to-Back N-Channel MOSFETs
  • Blocks 50Hz and 60Hz AC Power
  • Hot Swappable Supply Input
  • Pin-Selectable Overcurrent Auto-Retry Timer or Latchoff
  • 10-Pin MSOP and 3mm × 3mm DFN Packages

Product Details

The LTC4368 protects applications from power supply voltages that may be too high, too low, or even negative and from overcurrent faults in both forward and reverse directions. The LTC4368 controls the gate voltage of a pair of external N-channel MOSFETs to ensure that the load is connected to the input supply only when there are no voltage or current faults.

Two comparator inputs allow configuration of the overvoltage (OV) and undervoltage (UV) set points using an external resistive divider. A current sense resistor sets the forward and reverse circuit breaker current thresholds. After a forward current fault, the LTC4368 will either latch off power, or retry after a user adjustable delay. After a reverse current fault, the LTC4368 waits for the output to fall 100mV below the input to reconnect power to the load.

The LTC4368 has a 32ms turn-on delay that debounces live supply input connections and blocks 50Hz and 60Hz AC power. UV/OV faults also trigger the 32ms recovery delay before the external MOSFETs are turned back on.

Applications

  • Reverse Battery Protection
  • Portable Instrumentation
  • Automotive and Industrial Surge Protection
  • Energy Storage Systems

Product Lifecycle icon-recommended 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.

Evaluation Kits (2)

Tools & Simulations

LTspice

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.

LTspice

Models for the following parts are available in LTspice:

LTC4368-1
LTC4368-2

Product Recommendations

LTC4368 Companion Parts

Recommended Related Parts

Design Resources

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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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.


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Evaluation Boards Pricing displayed is based on 1-piece.
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.