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

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

High Efficiency Switching Surge Stopper Features:High Efficiency VOUT Clamp Stops High Voltage Input SurgesSWITCH-ON Mode 100% Duty Cycle for Normal OperationPROTECTIVE PWM Mode for Transients and FaultsVIN Pin to SGND Range: 3.5V to 60VExternal Input Voltage is Extendable to 200V+Adjustable Output Voltage ClampAdjustable Output Overcurrent ProtectionPower Inductor Improves Input EMI in Normal OperationProgrammable Fault TimerAdjustable Soft-Start for Input Inrush Current Limiting4.5% Retry Duty Cycle During FaultsAdjustable Switching Frequency: 50kHz to 850kHzOptional Reverse Input Voltage ProtectionAvailable in Thermally Enhanced 12-lead MSOP Package

High Efficiency Switching Surge Stopper Features:High Efficiency VOUT Clamp Stops High Voltage Input SurgesSWITCH-ON Mode 100% Duty Cycle for Normal OperationPROTECTIVE PWM Mode for Transients and FaultsVIN Pin to SGND Range: 3.5V to 60VExternal Input Voltage is Extendable to 200V+Adjustable Output Voltage ClampAdjustable Output Overcurrent ProtectionPower Inductor Improves Input EMI in Normal OperationProgrammable Fault TimerAdjustable Soft-Start for Input Inrush Current Limiting4.5% Retry Duty Cycle During FaultsAdjustable Switching Frequency: 50kHz to 850kHzOptional Reverse Input Voltage ProtectionAvailable in Thermally Enhanced 12-lead MSOP Package

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

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