Analog Devices Inc. LTC4412 Low Loss PowerPath™ Controller

Analog Devices Inc. LTC4412 Low Loss PowerPath™ Controller controls an external P-channel MOSFET to create a near ideal diode function for power switchover or load sharing. This feature permits highly efficient OR’ing of multiple power sources for extended battery life and low self-heating. When conducting, the voltage drop across the MOSFET is typically 20mV. For applications with a wall adapter or other auxiliary power source, the load is automatically disconnected from the battery when the auxiliary source is connected. Two or more LTC4412s may be interconnected to allow load sharing between multiple batteries or charging of multiple batteries from a single charger.


  • Very Low Loss Replacement for Power Supply OR’ing Diodes
  • Minimal External Components
  • Automatic Switching Between DC Sources
  • Simplifies Load Sharing with Multiple Batteries
  • Low Quiescent Current: 11μA
  • 3V to 28V AC/DC Adapter Voltage Range
  • 2.5V to 28V Battery Voltage Range
  • Reverse Battery Protection
  • Drives Almost Any Size MOSFET for Wide Range of Current Requirements
  • MOSFET Gate Protection Clamp
  • Manual Control Input
  • Low Profile (1mm) ThinSOT™ Package


  • Cellular Phones
  • Notebook and Handheld Computers
  • Digital Cameras
  • USB-Powered Peripherals
  • Uninterruptible Power Supplies
  • Logic Controlled Power Switch

Typical Application

Application Circuit Diagram - Analog Devices Inc. LTC4412 Low Loss PowerPath™ Controller
Publicado: 2019-04-29 | Actualizado: 2022-03-11