The MAX1744/MAX1745 are step-down DC-DC controllers capable of handling up to 36V inputs. These parts use a proprietary current-limited control scheme for excellent light- and full-load efficiency, while their 330kHz (max) switching frequency permits small external components for space-critical applications. Operation to 100% duty cycle permits the lowest possible dropout voltage. The MAX1744 contains an internal feedback network that provides a pin-selectable output voltage of either 3.3V or 5V. The MAX1745 uses an external feedback network to generate an adjustable output voltage between 1.25V and 18V. The MAX1744/MAX1745 are available in a space-saving 10-pin µMAX® package. Applications * Automotive Electronics * FireWire®/IEEE® 1394 * Industrial Control Systems * Telecom Systems * Wall-Cube-Powered Devices * High-Voltage Operation (up to 36VIN) * Efficiency > 90% * Output Power Capability Exceeds 50W * 10-Pin µMax Package * Low-Dropout Voltage * 100% (max) Duty Cycle * 90µA Quiescent Current * 4µA Shutdown Current * Up to 330kHz Switching Frequency * Output Voltage * 5V or 3.3V (MAX1744) * Adjustable 1.25V to 18V (MAX1745) * Current-Limited Control Scheme https://elecena.pl/product/22318641/high-voltage-step-down-dc-dc-controller-in-max 2022-12-27 https://elecena.pl/product/22318641/high-voltage-step-down-dc-dc-controller-in-max 2025-01-19