100V Overvoltage, Undervoltage and Reverse Supply Protection Controller Features:Wide Operating Voltage Range: 2.5V to 60VOvervoltage Protection to 100VReverse Supply Protection to –40VLTC4367: Blocks 50Hz and 60Hz AC PowerLTC4367: 32ms Recovery from FaultLTC4367-1: Fast 500μs Recovery from FaultNo Input Capacitor or TVS Required for Most ApplicationsAdjustable Undervoltage and Overvoltage ThresholdsControls Back-to-Back N-Channel MOSFETsLow Operating Current: 70μALow Shutdown Current: 5μA8-Pin MSOP and 3mm × 3mm DFN PackagesAEC-Q100 Qualified for Automotive Applications

100V Overvoltage, Undervoltage and Reverse Supply Protection Controller Features:Wide Operating Voltage Range: 2.5V to 60VOvervoltage Protection to 100VReverse Supply Protection to –40VLTC4367: Blocks 50Hz and 60Hz AC PowerLTC4367: 32ms Recovery from FaultLTC4367-1: Fast 500μs Recovery from FaultNo Input Capacitor or TVS Required for Most ApplicationsAdjustable Undervoltage and Overvoltage ThresholdsControls Back-to-Back N-Channel MOSFETsLow Operating Current: 70μALow Shutdown Current: 5μA8-Pin MSOP and 3mm × 3mm DFN PackagesAEC-Q100 Qualified for Automotive Applications

100V UV/OV and Reverse Protection Controller with Bidirectional Circuit Breaker Features: Wide Operating Voltage Range: 2.5V to 60V Overvoltage Protection to 100V Reverse Supply Protection to –40V Bidirectional Electronic Circuit Breaker: +50mV Forward Sense Threshold –50mV Reverse (LTC4368-1) –3mV Reverse (LTC4368-2) Adjustable ±1.5% Undervoltage and Overvoltage Thresholds Low Operating Current: 80µA Low Shutdown Current: 5µA Controls Back-to-Back N-Channel MOSFETs Blocks 50Hz and 60Hz AC Power Hot Swappable Supply Input Pin-Selectable Overcurrent Auto-Retry Timer or Latchoff 10-Pin MSOP and 3mm × 3mm DFN Packages AEC-Q100 Qualified for Automotive Applications

Low Quiescent Current Surge Stopper Features: Low Quiescent Current: 8µA Operating Withstands Surge Voltage Up to the MOSFET Limit Wide Operating Voltage Range: 4V to 72V Overcurrent Protection Selectable Internal 31.5V/50V or Adjustable Gate Clamp Voltage Reverse Input Protection to –60V Adjustable Turn-On Threshold Adjustable Fault Timer with MOSFET Stress Acceleration Controls N-Channel MOSFET Latchoff and Retry Options Low Retry Duty Cycle During Faults 10-Pin DFN (3mm × 3mm) and MSOP Packages AEC-Q100 Qualified for Automotive Applications

Low Quiescent Current Surge Stopper Features: Low Quiescent Current: 8µA Operating Withstands Surge Voltage Up to the MOSFET Limit Wide Operating Voltage Range: 4V to 72V Overcurrent Protection Selectable Internal 31.5V/50V or Adjustable Gate Clamp Voltage Reverse Input Protection to –60V Adjustable Turn-On Threshold Adjustable Fault Timer with MOSFET Stress Acceleration Controls N-Channel MOSFET Latchoff and Retry Options Low Retry Duty Cycle During Faults 10-Pin DFN (3mm × 3mm) and MSOP Packages AEC-Q100 Qualified for Automotive Applications

140V High Efficiency Switching Surge Stopper Features: VOUT Clamp Stops High Voltage Input Surges 100% Duty Cycle Pass-Through Mode During Normal Operation Switches During Overvoltage or Overcurrent Transients and Faults and During Startup High Efficiency Switching Enables Long Duration Surge Protection and High Output Currents Wide VIN Range: 4V to 140V (150V Abs Max) Adjustable Output Voltage Clamp Up to 60V Adjustable Output Overcurrent Protection RSENSE or Inductor DCR Current Sensing Power Inductor Reduces Input EMI in Normal Mode Adjustable Soft-Start for Inrush Current Limiting Programmable Fault Timer Open-Drain Fault Warning Indicator 2.7% Retry Duty Cycle During Faults Adjustable Switching Frequency: 50kHz to to 900kHz Adjustable Input Voltage Turn-On Threshold Adjustable Input Overvoltage Lockout Threshold 20-Pin 4mm × 5mm QFN and TSSOP Packages

140V High Efficiency Switching Surge Stopper Features: VOUT Clamp Stops High Voltage Input Surges 100% Duty Cycle Pass-Through Mode During Normal Operation Switches During Overvoltage or Overcurrent Transients and Faults and During Startup High Efficiency Switching Enables Long Duration Surge Protection and High Output Currents Wide VIN Range: 4V to 140V (150V Abs Max) Adjustable Output Voltage Clamp Up to 60V Adjustable Output Overcurrent Protection RSENSE or Inductor DCR Current Sensing Power Inductor Reduces Input EMI in Normal Mode Adjustable Soft-Start for Inrush Current Limiting Programmable Fault Timer Open-Drain Fault Warning Indicator 2.7% Retry Duty Cycle During Faults Adjustable Switching Frequency: 50kHz to to 900kHz Adjustable Input Voltage Turn-On Threshold Adjustable Input Overvoltage Lockout Threshold 20-Pin 4mm × 5mm QFN and TSSOP Packages

140V High Efficiency Switching Surge Stopper Features: VOUT Clamp Stops High Voltage Input Surges 100% Duty Cycle Pass-Through Mode During Normal Operation Switches During Overvoltage or Overcurrent Transients and Faults and During Startup High Efficiency Switching Enables Long Duration Surge Protection and High Output Currents Wide VIN Range: 4V to 140V (150V Abs Max) Adjustable Output Voltage Clamp Up to 60V Adjustable Output Overcurrent Protection RSENSE or Inductor DCR Current Sensing Power Inductor Reduces Input EMI in Normal Mode Adjustable Soft-Start for Inrush Current Limiting Programmable Fault Timer Open-Drain Fault Warning Indicator 2.7% Retry Duty Cycle During Faults Adjustable Switching Frequency: 50kHz to to 900kHz Adjustable Input Voltage Turn-On Threshold Adjustable Input Overvoltage Lockout Threshold 20-Pin 4mm × 5mm QFN and TSSOP Packages

The LTC1696 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.Applications Telecommunication Systems Computer Systems Industrial Control Systems Notebook Computers

Surge Suppressors Low Quiescent Current Surge Stopper with Selectable Clamp and Latchoff