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LTC1696 - Overvoltage Protection Controller

The LTC®1696 is a standalone power supply overvoltage monitor and protection device designed to protect a power supply load in the event of an overvoltage fault. It monitors two adjustable output voltages. If an overvoltage condition is detected, the output drives either an external SCR crowbar or turns off external back-to-back N-channel MOSFETs, thereby, disconnecting the input voltage from the power supply.

Pin 6 offers three functions. By connecting a capacitor to this pin, the internal glitch filter time delay can be programmed. Without the capacitor, the default time delay is determined by an internal capacitor. This pin also serves as a reset input to clear the internal latch after an overvoltage fault condition. By pulling it high, the OUT pin is activated if the FB1 and FB2 voltages remain below the trip threshold.

The LTC1696 is available in the low profile (1mm) ThinSOT package.

Features ±2% Overvoltage Threshold Accuracy Low Profile (1mm) ThinSOTTM Package Gate Drive for SCR Crowbar or External N-Channel Disconnect MOSFET Monitors Two Output Voltages Senses Output Voltages from 0.8V to 24V Wide Supply Range: 2.7V to 27V Multifunction TIMER/RESET Pin Typical Application

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