LTC4376 7 A Ideal Diode with Reverse Input Protection

01/09/2019

LTC4376 7 A Ideal Diode with Reverse Input Protection

Analog Devices' protection devices for battery protection found in automotive, computer, and portable battery applications

Image of Linear Technology's LTC4376 7 A Ideal Diode with Reverse Input ProtectionPower by Linear™/ Analog Devices' LTC4376 is a 7 A ideal diode with reverse input protection. This device uses an internal 15 mΩ N-channel MOSFET to replace a Schottky diode when used in diode-OR and high current diode applications. The LTC4376 reduces power consumption, heat dissipation, and PC board area.

The LTC4376 controls the forward voltage drop across the internal MOSFET to ensure smooth current delivery without oscillation even at light loads. If a power source fails or is shorted, a fast turn-off minimizes reverse current transients. The device also easily ORs power sources to increase total system reliability. 

With its low operating voltage, small solution size and the ability to withstand reverse input voltage, the LTC4376 excels in portable battery applications. A shutdown mode is available to reduce the quiescent current to 9 μA. The SHDN pin can also control the forward current path when an external MOSFET is used in series with the internal MOSFET in a back-to-back configuration. The LTC4376 is perfect for battery protection found in automotive, computer, and portable battery applications.

Typical Applications

Image of Linear Technology's LTC4376 12V, 7A Ideal Diode Diagram

Image of Linear Technology's LTC4376 Power Dissipation vs Load Current

Features
  • Reduces power dissipation by replacing a power Schottky diode

  • Wide operating voltage range: 4 V to 40 V

  • Internal 15 mΩ N-channel MOSFET

  • Reverse input protection to -40 V

  • Low 9 μA shutdown current

  • Low 150 μA operating current

  • Smooth switchover without oscillation

Applications
  • Battery protection

  • Redundant power supplies

  • Automotive

  • Portable battery

  • Computer systems/servers