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

4.5A, 500kHz Step-Down Switching Regulator Features: Operates with Input as Low as 4V Output Range Down to 1.21V Constant 500kHz Switching Frequency Uses All Surface Mount Components Inductor Size Reduced to 1.8µH Saturating Switch Design: 0.07Ω Shutdown Current: 20µA Easily Synchronizable Cycle-by-Cycle Current Limiting 4.5A Switch Current Mode Control

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

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

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