DC1506A

DC1506A demonstration circuit features the LTC®4361 an OV/OC protection controller that safeguards 2.5V to 5.5V systems from input supply overvoltage. The LTC4361 is designed for portable devices with multiple power supply options including wall adapters, car battery adapters and USB ports. The LTC4361 controls an external N-channel MOSFET in series with input power supply. During overvoltage transients, LTC4361 turns off MOSFET within 1µs, isolating downstream components from the input supply. Inductive cable transients are absorbed by the MOSFET and load capacitance. In most applications, the LTC4361 provides protection from transients up to 80V without requiring transient voltage suppressors or other external components. DC1506A demonstrates 3 protection schemes selected with a jumper: (A) OV and OC, (B) OV, OC, and (-) voltage and (C) OV, OC, (-) voltage, and reverse current. Each option has ON control, an output LED and can be applied to a USB protected output.

Notes

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