S09 DC-DC Automatic Buck Boost Power Module Step Up and Down Board Input 3V-15V Output 3.3V/5V/4.2V/9V/12V Electronic DIY PCB The S09 is a wide voltage and low power solution. The DC-DC power module automatically steps up or steps down and supports shutdown functionality. Maximum input voltage is 15VDC, with quiescent current less than 200uA. Fixed output voltages include 3.3V, 5V, 4.2V, 9V, and 12V. Maximum output current is 600mA. Designed with a working frequency of up to 1.2MHz, ensuring high stability and efficiency. Built with industrial-grade components for reliable, long-term performance without voltage drift. Cost-effective and suitable for demanding applications and mass production. Commonly used in communication equipment, digital radios, industrial motherboards, toys, model aircraft, microcontroller boards, household appliances, automotive power systems, security monitoring, field data collection, and street lighting systems. Input voltage: 3V–15V Output voltage: 3.3V, 5V, 4.2V, 9V, 12V Output current: 0.6A Conversion efficiency: 75% Output ripple: Low noise design