The LT1956/LT1956-5 are 500kHz monolithic buck switching regulators with an input voltage capability up to 60V. A high efficiency 1.5A, 0.2Ω switch is included on the die along with all the necessary oscillator, control and logic circuitry. A current mode architecture provides fast transient response and good loop stability. Special design techniques and a new high voltage process achieve high efficiency over a wide input range. Efficiency is maintained over a wide output current range by using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power switch. Patented circuitry maintains peak switch current over the full duty cycle range*. A shutdown pin reduces supply current to 25µA and the device can be externally synchronized from 580kHz to 700kHz with a logic level input. The LT1956/LT1956-5 are available in fused-lead 16-pin SSOP and thermally enhanced TSSOP packages. Applications * High Voltage, Industrial and Automotive * Portable Computers * Battery-Powered Systems * Battery Chargers * Distributed Power Systems * 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 https://elecena.pl/product/246021/high-voltage-1-5a-500khz-step-down-switching-regulators 2007-03-01 https://elecena.pl/product/246021/high-voltage-1-5a-500khz-step-down-switching-regulators 2017-10-10 https://elecena.pl/product/246021/high-voltage-1-5a-500khz-step-down-switching-regulators 2025-01-19