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LTC4412
Low Loss PowerPathв„ў
Controller in ThinSOT
Features Description Very Low Loss Replacement for Power Supply
OR’ing Diodes
nn Minimal External Components
nn Automatic Switching Between DC Sources
nn Simplifies Load Sharing with Multiple Batteries
nn Low Quiescent Current: 11ВµA
nn 3V to 28V AC/DC Adapter Voltage Range
nn 2.5V to 28V Battery Voltage Range
nn Reverse Battery Protection
nn Drives Almost Any Size MOSFET for Wide Range of
Current Requirements
nn MOSFET Gate Protection Clamp
nn Manual Control Input
nn Low Profile (1mm) ThinSOTв„ў Package The LTCВ®4412 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 …
