LTC7860EMSE#PBF

LTC7860 is a high efficiency surge stopper protects loads from high voltage transients. High efficiency permits higher currents and smaller solution sizes. During an input overvoltage event, such as a load dump in vehicles, this device controls the gate of an external MOSFET to act as a switching DC/DC regulator (PROTECTIVE PWM mode). This operation regulates the output voltage to a safe level, allowing the loads to operate through the input over-voltage event. During normal operation (SWITCHON mode), this device turns on the external MOSFET continuously, passing the input voltage through to the output. An internal comparator limits the voltage across the current sense resistor and regulates the maximum output current to protect against overcurrent faults. It is used in applications such as industrial and automotive power, telecom power, vehicle power including ISO7637, military power including MIL1275 etc.

• High efficiency VOUT clamp stops high voltage input surges
• Input voltage operating range is 3.5V to 60V
• External input voltage is extendable to 200V+
• Adjustable output voltage clamp, adjustable output overcurrent protection
• Power inductor improves input EMI in normal operation
• Programmable fault timer, optional reverse input voltage protection
• Adjustable soft-start for input inrush current limiting
• TMR restart duty cycle in a sustained fault is 4.5% typ at (TA = 25°C, VIN = 12V)
• Operating temperature is -40°C to 125°C
• Package style is 12-lead plastic MSOP

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