600kHz, 1A Switch PWM DC/DC Converter Features: 1.1A, 0.5, 30V Internal Switch Operates with VIN as Low as 1.5V 600kHz Fixed Frequency Operation Low-Battery Detector Active in Shutdown Low VCESAT Switch: 410mV at 800mA Pin-for-Pin Compatible with the LT1317B Small 8-Lead MSOP Package and SO Packages

Single Switch PWM Controller with Auxiliary Boost Converter Features: Wide Input Range: 3V to 25V Programmable Volt-Second Clamp Output Power Levels from 25W to 500W Auxiliary Boost Converter Provides 10V Gate Drive from VIN as Low as 3V Programmable Operating Frequency (100kHz to 500kHz) with One External Resistor Programmable Slope Compensation Programmable Leading Edge Blanking ±2% Internal 1.23V Reference Accurate Shutdown Pin Threshold with Programmable Hysteresis 60ns Current Sense Delay 2.5V Auxiliary Reference Output Synchronizable to an External Clock up to 1.5 • fOSC Current Mode Control Small 16-Pin SSOP Package

Single Switch Synchronous Forward Controller Features: Synchronous Rectifier Control for High Efficiency Programmable Volt-Second Clamp Output Power Levels from 25W to 500W Low Current Start-Up (LT1952: 460µA; VIN On/Off = 14.25V/8.75V) (LT1952-1: 400µA; VIN On/Off = 7.75V/6.5V) True PWM Soft-Start Low Stress Short Circuit Protection Precision 107mV Current Limit Threshold Adjustable Delay for Synchronous Timing Accurate Shutdown Threshold with Programmable Hysteresis Programmable Slope Compensation Programmable Leading Edge Blanking Programmable Frequency (100kHz to 500kHz) Synchronizable to an External Clock up to 1.5 • fOSC Internal 1.23V Reference 2.5V External Reference Current Mode Control Small 16-Pin SSOP Package

Single Switch Synchronous Forward Controller Features: Synchronous Rectifier Control for High Efficiency Programmable Volt-Second Clamp Output Power Levels from 25W to 500W Low Current Start-Up (LT1952: 460µA; VIN On/Off = 14.25V/8.75V) (LT1952-1: 400µA; VIN On/Off = 7.75V/6.5V) True PWM Soft-Start Low Stress Short Circuit Protection Precision 107mV Current Limit Threshold Adjustable Delay for Synchronous Timing Accurate Shutdown Threshold with Programmable Hysteresis Programmable Slope Compensation Programmable Leading Edge Blanking Programmable Frequency (100kHz to 500kHz) Synchronizable to an External Clock up to 1.5 • fOSC Internal 1.23V Reference 2.5V External Reference Current Mode Control Small 16-Pin SSOP Package

Single Switch Synchronous Forward Controller Features: Synchronous Rectifier Control for High Efficiency Programmable Volt-Second Clamp Output Power Levels from 25W to 500W Low Current Start-Up (LT1952: 460µA; VIN On/Off = 14.25V/8.75V) (LT1952-1: 400µA; VIN On/Off = 7.75V/6.5V) True PWM Soft-Start Low Stress Short Circuit Protection Precision 107mV Current Limit Threshold Adjustable Delay for Synchronous Timing Accurate Shutdown Threshold with Programmable Hysteresis Programmable Slope Compensation Programmable Leading Edge Blanking Programmable Frequency (100kHz to 500kHz) Synchronizable to an External Clock up to 1.5 • fOSC Internal 1.23V Reference 2.5V External Reference Current Mode Control Small 16-Pin SSOP Package

High Voltage, 1.5A, 500kHz Step-Down Switching Regulators Features: Wide Input Range: 5.5V to 60V 1.5A Peak Switch Current Small 16-Pin SSOP Package or Thermally Enhanced TSSOP Package Saturating Switch Design: 0.2Ω Peak Switch Current Maintained Over Full Duty Cycle Range Constant 500kHz Switching Frequency Effective Supply Current: 2.5mA Shutdown Current: 25µA 1.2V Feedback Reference (LT1956) 5V Fixed Output (LT1956-5) Easily Synchronizable Cycle-by-Cycle Current Limiting

High Voltage, 1.5A, 500kHz Step-Down Switching Regulators Features: Wide Input Range: 5.5V to 60V 1.5A Peak Switch Current Small 16-Pin SSOP Package or Thermally Enhanced TSSOP Package Saturating Switch Design: 0.2Ω Peak Switch Current Maintained Over Full Duty Cycle Range Constant 500kHz Switching Frequency Effective Supply Current: 2.5mA Shutdown Current: 25µA 1.2V Feedback Reference (LT1956) 5V Fixed Output (LT1956-5) Easily Synchronizable Cycle-by-Cycle Current Limiting

High Voltage, 1.5A, 500kHz Step-Down Switching Regulators Features: Wide Input Range: 5.5V to 60V 1.5A Peak Switch Current Small 16-Pin SSOP Package or Thermally Enhanced TSSOP Package Saturating Switch Design: 0.2Ω Peak Switch Current Maintained Over Full Duty Cycle Range Constant 500kHz Switching Frequency Effective Supply Current: 2.5mA Shutdown Current: 25µA 1.2V Feedback Reference (LT1956) 5V Fixed Output (LT1956-5) Easily Synchronizable Cycle-by-Cycle Current Limiting

High Voltage, 1.5A, 500kHz Step-Down Switching Regulators Features: Wide Input Range: 5.5V to 60V 1.5A Peak Switch Current Small 16-Pin SSOP Package or Thermally Enhanced TSSOP Package Saturating Switch Design: 0.2Ω Peak Switch Current Maintained Over Full Duty Cycle Range Constant 500kHz Switching Frequency Effective Supply Current: 2.5mA Shutdown Current: 25µA 1.2V Feedback Reference (LT1956) 5V Fixed Output (LT1956-5) Easily Synchronizable Cycle-by-Cycle Current Limiting

High Voltage, 1.5A, 500kHz Step-Down Switching Regulators Features: Wide Input Range: 5.5V to 60V 1.5A Peak Switch Current Small 16-Pin SSOP Package or Thermally Enhanced TSSOP Package Saturating Switch Design: 0.2Ω Peak Switch Current Maintained Over Full Duty Cycle Range Constant 500kHz Switching Frequency Effective Supply Current: 2.5mA Shutdown Current: 25µA 1.2V Feedback Reference (LT1956) 5V Fixed Output (LT1956-5) Easily Synchronizable Cycle-by-Cycle Current Limiting

300mA, Low Noise, Micropower LDO Regulators Features: Low Noise: 20µVRMS (10Hz to 100kHz) Output Current: 300mA Low Quiescent Current: 30µA Wide Input Voltage Range: 1.8V to 20V Low Dropout Voltage: 270mV Very Low Shutdown Current: < 1µA No Protection Diodes Needed Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V Adjustable Output from 1.22V to 20V Stable with 3.3µF Output Capacitor Stable with Aluminum, Tantalum or Ceramic Capacitors Reverse Battery Protection No Reverse Current Overcurrent and Overtemperature Protected 8-Lead MSOP Package

LTC3609 series DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board

300mA, Low Noise, Micropower LDO Regulators Features: Low Noise: 20µVRMS (10Hz to 100kHz) Output Current: 300mA Low Quiescent Current: 30µA Wide Input Voltage Range: 1.8V to 20V Low Dropout Voltage: 270mV Very Low Shutdown Current: < 1µA No Protection Diodes Needed Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V Adjustable Output from 1.22V to 20V Stable with 3.3µF Output Capacitor Stable with Aluminum, Tantalum or Ceramic Capacitors Reverse Battery Protection No Reverse Current Overcurrent and Overtemperature Protected 8-Lead MSOP Package

300mA, Low Noise, Micropower LDO Regulators Features: Low Noise: 20µVRMS (10Hz to 100kHz) Output Current: 300mA Low Quiescent Current: 30µA Wide Input Voltage Range: 1.8V to 20V Low Dropout Voltage: 270mV Very Low Shutdown Current: < 1µA No Protection Diodes Needed Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V Adjustable Output from 1.22V to 20V Stable with 3.3µF Output Capacitor Stable with Aluminum, Tantalum or Ceramic Capacitors Reverse Battery Protection No Reverse Current Overcurrent and Overtemperature Protected 8-Lead MSOP Package

300mA, Low Noise, Micropower LDO Regulators Features: Low Noise: 20µVRMS (10Hz to 100kHz) Output Current: 300mA Low Quiescent Current: 30µA Wide Input Voltage Range: 1.8V to 20V Low Dropout Voltage: 270mV Very Low Shutdown Current: < 1µA No Protection Diodes Needed Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V Adjustable Output from 1.22V to 20V Stable with 3.3µF Output Capacitor Stable with Aluminum, Tantalum or Ceramic Capacitors Reverse Battery Protection No Reverse Current Overcurrent and Overtemperature Protected 8-Lead MSOP Package

1.5A, Low Noise, Fast Transient Response LDO Regulators Features: Optimized for Fast Transient Response Output Current: 1.5A Dropout Voltage: 340mV Low Noise: 40μVRMS (10Hz to 100kHz) 1mA Quiescent Current No Protection Diodes Needed Controlled Quiescent Current in Dropout Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V Adjustable Output from 1.21V to 20V <1μA Quiescent Current in Shutdown Stable with 10μF Output Capacitor Reverse Battery Protection No Reverse Current Thermal Limiting 5-Lead TO-220, DD, 3-Lead SOT-223, 8-Lead SO and 16-Lead TSSOP Packages

1.5A, Low Noise, Fast Transient Response LDO Regulators Features: Optimized for Fast Transient Response Output Current: 1.5A Dropout Voltage: 340mV Low Noise: 40μVRMS (10Hz to 100kHz) 1mA Quiescent Current No Protection Diodes Needed Controlled Quiescent Current in Dropout Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V Adjustable Output from 1.21V to 20V <1μA Quiescent Current in Shutdown Stable with 10μF Output Capacitor Reverse Battery Protection No Reverse Current Thermal Limiting 5-Lead TO-220, DD, 3-Lead SOT-223, 8-Lead SO and 16-Lead TSSOP Packages

1.5A, Low Noise, Fast Transient Response LDO Regulators Features: Optimized for Fast Transient Response Output Current: 1.5A Dropout Voltage: 340mV Low Noise: 40μVRMS (10Hz to 100kHz) 1mA Quiescent Current No Protection Diodes Needed Controlled Quiescent Current in Dropout Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V Adjustable Output from 1.21V to 20V <1μA Quiescent Current in Shutdown Stable with 10μF Output Capacitor Reverse Battery Protection No Reverse Current Thermal Limiting 5-Lead TO-220, DD, 3-Lead SOT-223, 8-Lead SO and 16-Lead TSSOP Packages

1.5A, Low Noise, Fast Transient Response LDO Regulators Features: Optimized for Fast Transient Response Output Current: 1.5A Dropout Voltage: 340mV Low Noise: 40μVRMS (10Hz to 100kHz) 1mA Quiescent Current No Protection Diodes Needed Controlled Quiescent Current in Dropout Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V Adjustable Output from 1.21V to 20V <1μA Quiescent Current in Shutdown Stable with 10μF Output Capacitor Reverse Battery Protection No Reverse Current Thermal Limiting 5-Lead TO-220, DD, 3-Lead SOT-223, 8-Lead SO and 16-Lead TSSOP Packages

1.5A, Low Noise, Fast Transient Response LDO Regulators Features: Optimized for Fast Transient Response Output Current: 1.5A Dropout Voltage: 340mV Low Noise: 40μVRMS (10Hz to 100kHz) 1mA Quiescent Current No Protection Diodes Needed Controlled Quiescent Current in Dropout Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V Adjustable Output from 1.21V to 20V <1μA Quiescent Current in Shutdown Stable with 10μF Output Capacitor Reverse Battery Protection No Reverse Current Thermal Limiting 5-Lead TO-220, DD, 3-Lead SOT-223, 8-Lead SO and 16-Lead TSSOP Packages