The LTC3830/LTC3830-1 are high power, high efficiency switching regulator controllers optimized for 3.3V-5V to 1.xV-3.xV step-down applications. A precision internal reference and feedback system provide ±1% output regulation over temperature, load current and line voltage variations. The LTC3830/LTC3830-1 use a synchronous switching architecture with N-channel MOSFETs. Additionally, the chip senses output current through the drain-source resistance of the upper N-channel FET, providing an adjustable current limit without a current sense resistor. The LTC3830/LTC3830-1 operate with an input supply voltage as low as 3V and with a maximum duty cycle of >91% over temperature. They include a fixed frequency PWM oscillator for low output ripple operation. The 200kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to 500kHz. In shutdown mode, the LTC3830 supply current drops to <10µA. The LTC3830-1 differs from the LTC3830 S8 version by replacing shutdown with a soft-start function. For a similar, pin compatible DC/DC converter with an output voltage as low as 0.6V, please refer to the LTC3832. Applications * CPU Power Supplies * Multiple Logic Supply Generator * Distributed Power Applications * High Efficiency Power Conversion * High Power Switching Regulator Controller for 3.3V-5V to 1.xV-3.xV Step-Down Applications * No Current Sense Resistor Required * Low Input Supply Voltage Range: 3V to 8V * Maximum Duty Cycle >91% Over Temperature * All N-Channel External MOSFETs * Excellent Output Regulation: ±1% Over Line, Load and Temperature Variations * High Efficiency: Over 95% Possible https://elecena.pl/product/259972/high-power-step-down-synchronous-dc-dc-controllers-for-low-voltage-operation 2007-03-04 https://elecena.pl/product/259972/high-power-step-down-synchronous-dc-dc-controllers-for-low-voltage-operation 2014-04-23 https://elecena.pl/product/259972/high-power-step-down-synchronous-dc-dc-controllers-for-low-voltage-operation 2025-01-19