LTC4412IS6#TRPBF

LTC®4412 low loss PowerPath™ controller controls an external P-channel MOSFET to create a near ideal diode function for power switchover or load sharing. This 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. The wide supply operating range supports operation from one to six Li-Ion cells in series. The low quiescent current is independent of the load current. The gate driver includes an internal voltage clamp for MOSFET protection. Typical applications are cellular phones, notebook and handheld computers, digital cameras, USB-powered peripherals, uninterruptible power supplies, logic controlled power switch.

• Very low loss replacement for power supply OR'ing diodes
• Minimal external components
• Automatic switching between DC sources
• Simplifies load sharing with multiple batteries
• Reverse battery protection
• Drives almost any size MOSFET for wide range of current requirements
• MOSFET gate protection clamp, manual control input
• Operating supply range 2.5 to 28V at VIN and/or VSENSE must be in this range for proper operation
• 6-lead plastic TSOT-23 package
• Temperature rating range from -40 to 85°C