The LTC3832/LTC3832-1 are high power, high efficiency switching regulator controllers optimized for 3.3V-5V to 0.6V-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 LTC3832/LTC3832-1 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 MOSFET, providing an adjustable current limit without a current sense resistor. The LTC3832/LTC3832-1 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 300kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to 500kHz. In shutdown mode, the LTC3832 supply current drops to <10µA. The LTC3832-1 is the SO-8 version without current limit, frequency adjustment and shutdown functions. Applications * CPU Power Supplies * Multiple Logic Supply Generator * Distributed Power Applications * High Efficiency Power Conversion * VOUT as Low as 0.6V * High Power Switching Regulator Controller for 3.3V-5V to 0.6V-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 * Adjustable or Fixed 2.5V Output (LTC3832) * Programmable Fixed Frequency Operation: 100kHz to 500kHz * External Clock Synchronization * Soft-Start * Low Shutdown Current: <10µA * Overtemperature Protection * Available in SO-8 and SSOP-16 Packages https://elecena.pl/product/260033/high-power-step-down-synchronous-dc-dc-controllers-for-low-voltage-operation 2007-03-04 https://elecena.pl/product/260033/high-power-step-down-synchronous-dc-dc-controllers-for-low-voltage-operation 2014-06-12 https://elecena.pl/product/260033/high-power-step-down-synchronous-dc-dc-controllers-for-low-voltage-operation 2025-01-22