High Voltage Surge Stopper with Current Limit Features: Withstands Surges Over 80V with VCC Clamp Wide Operating Voltage Range: 4V to 80V Adjustable Output Clamp Voltage Fast Overcurrent Limit: Less Than 5μs Reverse Input Protection to –60V Adjustable UV/OV Comparator Thresholds Low 7μA Shutdown Current Shutdown Pin Withstands –60V to 100V Adjustable Fault Timer Controls N-Channel MOSFET Less Than 1% Retry Duty Cycle During Faults, LT4363-2 Available in 12-Pin (4mm × 3mm) DFN, 12-Pin MSOP or 16-Pin SO Packages

High Voltage Surge Stopper with Current Limit Features: Withstands Surges Over 80V with VCC Clamp Wide Operating Voltage Range: 4V to 80V Adjustable Output Clamp Voltage Fast Overcurrent Limit: Less Than 5μs Reverse Input Protection to –60V Adjustable UV/OV Comparator Thresholds Low 7μA Shutdown Current Shutdown Pin Withstands –60V to 100V Adjustable Fault Timer Controls N-Channel MOSFET Less Than 1% Retry Duty Cycle During Faults, LT4363-2 Available in 12-Pin (4mm × 3mm) DFN, 12-Pin MSOP or 16-Pin SO Packages

Secondary-Side Optocoupler Driver Features: 600mV Reference (1.25% Over Temperature) Wide Input Supply Range: 3V to 20V Overshoot Control Function Prevents Output Overshoot on Start-Up and Short-Circuit Recovery High Bandwidth Error Amplifier Permits Simple Loop Frequency Compensation Ground-Referenced Opto-Coupler Drive 10mA Opto-Coupler Drive with Current Limiting Low Profile (1mm) ThinSOT™ Package

Quad Matched Resistor Network Features: Excellent Matching A-Grade: 0.01% Matching B-Grade: 0.025% Matching 0.2ppm/°C Matching Temperature Drift ±75V Operating Voltage (±80V Abs Max) 8ppm/°C Absolute Resistor Value Temperature Drift Long-Term Stability: <2ppm at 2000 Hrs –55°C to 150°C Operating Temperature 8-Lead MSOP Package

Quad Matched Resistor Network Features: Excellent Matching A-Grade: 0.01% Matching B-Grade: 0.025% Matching 0.2ppm/°C Matching Temperature Drift ±75V Operating Voltage (±80V Abs Max) 8ppm/°C Absolute Resistor Value Temperature Drift Long-Term Stability: <2ppm at 2000 Hrs –55°C to 150°C Operating Temperature 8-Lead MSOP Package

Quad Matched Resistor Network Features: Excellent Matching A-Grade: 0.01% Matching B-Grade: 0.025% Matching 0.2ppm/°C Matching Temperature Drift ±75V Operating Voltage (±80V Abs Max) 8ppm/°C Absolute Resistor Value Temperature Drift Long-Term Stability: <2ppm at 2000 Hrs –55°C to 150°C Operating Temperature 8-Lead MSOP Package

Quad Matched Resistor Network Features: Excellent Matching A-Grade: 0.01% Matching B-Grade: 0.025% Matching 0.2ppm/°C Matching Temperature Drift ±75V Operating Voltage (±80V Abs Max) 8ppm/°C Absolute Resistor Value Temperature Drift Long-Term Stability: <2ppm at 2000 Hrs –55°C to 150°C Operating Temperature 8-Lead MSOP Package

Quad Matched Resistor Network Features: Excellent Matching A-Grade: 0.01% Matching B-Grade: 0.025% Matching 0.2ppm/°C Matching Temperature Drift ±75V Operating Voltage (±80V Abs Max) 8ppm/°C Absolute Resistor Value Temperature Drift Long-Term Stability: <2ppm at 2000 Hrs –55°C to 150°C Operating Temperature 8-Lead MSOP Package

Quad Matched Resistor Network Features: Excellent Matching A-Grade: 0.01% Matching B-Grade: 0.025% Matching 0.2ppm/°C Matching Temperature Drift ±75V Operating Voltage (±80V Abs Max) 8ppm/°C Absolute Resistor Value Temperature Drift Long-Term Stability: <2ppm at 2000 Hrs –55°C to 150°C Operating Temperature 8-Lead MSOP Package

Power Tracking 2A Battery Charger Features: Input Supply Voltage Regulation Loop for Peak Power Tracking in (MPPT) Solar Applications Wide Input Voltage Range: 4.95V to 34V (40V Abs Max) Programmable Charge Rate Up to 2A User Selectable Termination: C/10 or On-Board Termination Timer Resistor Programmable Float Voltage Up to 18V Accommodates 4-Cell Li-Ion/Polymer, 5-Cell LiFePO4, Lead-Acid Chemistries Parallelable for Higher Output Current 1MHz Fixed Frequency 0.5% Float Voltage Reference Accuracy 5% Charge Current Accuracy 2.5% C/10 Detection Accuracy Binary-Coded Open-Collector Status Pins Thermally Enhanced 3mm × 3mm DFN and MSE Packages

1.2A Step-Down Switching Regulator with Output Current Limit Features: Wide Input Range: Operation from 7.5V to 36V Overvoltage Lockout Protects Circuit through 60V Transients Programmable Output Current Limit (0.4A to 1.2A) 3.3V and 5V Fixed Output Voltage Options Integrated Boost Diode Fixed Frequency, Peak Current Mode Control LT3663 fSW = 1.5MHz LT3663-X fSW = 1MHZ Low Switch VCESAT: 275mV at 1A Internally Compensated Thermal Protection Thermally Enhanced 8-Pin 2mm × 3mm DFN and

1.2A Step-Down Switching Regulator with Output Current Limit Features: Wide Input Range: Operation from 7.5V to 36V Overvoltage Lockout Protects Circuit through 60V Transients Programmable Output Current Limit (0.4A to 1.2A) 3.3V and 5V Fixed Output Voltage Options Integrated Boost Diode Fixed Frequency, Peak Current Mode Control LT3663 fSW = 1.5MHz LT3663-X fSW = 1MHZ Low Switch VCESAT: 275mV at 1A Internally Compensated Thermal Protection Thermally Enhanced 8-Pin 2mm × 3mm DFN and

1.2A Step-Down Switching Regulator with Output Current Limit Features: Wide Input Range: Operation from 7.5V to 36V Overvoltage Lockout Protects Circuit through 60V Transients Programmable Output Current Limit (0.4A to 1.2A) 3.3V and 5V Fixed Output Voltage Options Integrated Boost Diode Fixed Frequency, Peak Current Mode Control LT3663 fSW = 1.5MHz LT3663-X fSW = 1MHZ Low Switch VCESAT: 275mV at 1A Internally Compensated Thermal Protection Thermally Enhanced 8-Pin 2mm × 3mm DFN and

40V 400mA Step-Down Switching Regulator with Dual Fault Protected LDOs Features: Triple Output Supply from a Single Input Requires Only One Inductor IQ = 50μA at 12VIN to 5V, 3.3V and 2.5V with No Load Buck Regulator: Low Ripple (<15mVP-P) Burst Mode Operation® 400mA Output with Internal Power Switch 4.3V to 40V Input Operation Range (60V Max) Dual Low Dropout Linear Regulators 200mA Outputs with Programmable Current Limits 1.6V to 45V Input Range Fault Protected to ±45V Adjustable 250kHz to 2.2MHz Switching Frequency Synchronizable Between 300kHz and 2.2MHz Programmable Undervoltage Lockout Power Good Indicators Available in a Thermally-Enhanced 16-Lead MSOP and 24-Lead (3mm × 5mm) QFN Packages

40V 400mA Step-Down Switching Regulator with Dual Fault Protected Tracking LDOs Features: Dual Low Dropout Linear Tracking Regulators 200mA Outputs with Programmable Current Limits 1.6V to 45V Input Range Fault Protected to ±45V Triple Output Supply from a Single Input Requires Only One Inductor IQ = 50μA at 12VIN to 6V and 5V with No Load Buck Regulator: Low Ripple (<15mVP-P) Burst Mode® Operation 400mA Output with Internal Power Switch 4.3V to 40V Input Operation Range (60V Max) Adjustable 250kHz to 2.2MHz Switching Frequency Power Good Indicator Available in a Thermally-Enhanced 16-Lead MSOP Package

40V 400mA Step-Down Switching Regulator with Dual Fault Protected Tracking LDOs Features: Dual Low Dropout Linear Tracking Regulators 200mA Outputs with Programmable Current Limits 1.6V to 45V Input Range Fault Protected to ±45V Triple Output Supply from a Single Input Requires Only One Inductor IQ = 50μA at 12VIN to 6V and 5V with No Load Buck Regulator: Low Ripple (<15mVP-P) Burst Mode® Operation 400mA Output with Internal Power Switch 4.3V to 40V Input Operation Range (60V Max) Adjustable 250kHz to 2.2MHz Switching Frequency Power Good Indicator Available in a Thermally-Enhanced 16-Lead MSOP Package

36V, 3.5A, 2.4MHz Step-Down Switching Regulator with 75A Quiescent Current Features: Wide Input Voltage Range: 3.6V to 36V 3.5A Maximum Output Current Low Ripple (<15mVP-P) Burst Mode® Operation: IQ = 75µA at 12VIN to 3.3VOUT Adjustable Switching Frequency: 200kHz to 2.4MHz Low Shutdown Current: IQ < 0.5µA Integrated Boost Diode Synchronizable Between 250kHz to 2MHz Power Good Flag Saturating Switch Design: 95mΩ On-Resistance 0.790V Feedback Reference Voltage Output Voltage: 0.79V to 30V Thermal Protection Soft-Start Capability Small 10-Pin Thermally Enhanced MSOP and (3mm × 3mm) DFN Packages

1A Micropower Step-Down Switching Regulator Features: Wide Input Range: Operation from 3.6V to 36V Overvoltage Lockout Protects Circuits through 60V Transients 1A Output Current Low Ripple Burst Mode® Operation IQ = 75μA at 12VIN to 3.3VOUT Output Ripple < 15mVP-P Adjustable Switching Frequency: 250kHz to 2.2MHz Short-Circuit Protected Synchronizable Between 300kHz and 2.2MHz 0.8V Feedback Reference Voltage Output Voltage 0.8V to 20V Soft-Start Capability Power Good Flag Small 12-Pin Thermally Enhanced 3mm × 3mm DFN Package

36V, 2A, 2.8MHz Step-Down Switching Regulator Features: Wide Input Range: 3.6V to 34V Operating, 36V Maximum 2A Maximum Output Current Adjustable Switching Frequency: 300kHz to 2.8MHz Low Shutdown Current: IQ < 1µA Integrated Boost Diode Power Good Flag Saturating Switch Design: 0.18Ω On-Resistance 1.265V Feedback Reference Voltage Output Voltage: 1.265V to 20V Soft-Start Capability Small 10-Pin Thermally Enhanced MSOP and (3mm × 3mm) DFN Packages

36V, 2A, 2.4MHz Step-Down Switching Regulator Features: Wide Input Range: Operation From 3.6V to 36V Overvoltage Lockout Protects Circuit through 60V Transients 2A Maximum Output Current Adjustable Switching Frequency: 200kHz to 2.4MHz Low Shutdown Current: IQ < 1µA Integrated Boost Diode Synchronizable Between 250kHz to 2MHz Power Good Flag Saturating Switch Design: 0.25Ω On-Resistance 0.790V Feedback Reference Voltage Output Voltage: 0.79V to 20V Soft-Start Capability Small 10-Pin Thermally Enhanced MSOP and (3mm x 3mm) DFN Packages