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A switching converter that stabilizes a 5V input voltage from 2.6V to 20V. It offers high efficiency of 70-95% and the ability to operate with a continuous input current of up to 900mA and a peak current limit of 2.2A. With a switching frequency of 1.6MHz and a power-saving mode, it is suitable for both high-performance and low-power applications. Pololu 5581
A compact and efficient step-up voltage regulator that provides a stable 5 V output voltage. The device belongs to the U3V9Fx family of regulators and operates in switching power supply (SMPS) technology, which allows for typical efficiency in the 70–95% range. With a switching frequency of about 1.6 MHz under heavy load and a power-saving mode at lower currents, the regulator offers high application flexibility. The system can limit peak input current to 2.2 A, and under typical conditions it can operate stably with continuous input current up to 900 mA. This makes it an excellent choice for applications that require a stable 5 V supply from low-voltage sources such as Li-Ion batteries, cells, or other mobile power supplies.
The small size of the module makes it suitable both for prototyping and integration into space-constrained projects. The regulator is equipped with several protections, including over-temperature shutdown, peak current limiting, and soft-start functionality, which increase its reliability and safe operation. However, it does not include short-circuit protection or reverse polarity protection, so in some applications it is recommended to use additional protective modules. Thanks to its simplicity, high efficiency, and versatility, it is well-suited for use in IoT power systems, portable electronics, robotics, and consumer devices.
Data sheet
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Pin header goldpin black 1x40 pins. Straight connector for through-hole assembly. 2.54mm pitch.
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A switching converter that stabilizes a 5V input voltage from 2.6V to 20V. It offers high efficiency of 70-95% and the ability to operate with a continuous input current of up to 900mA and a peak current limit of 2.2A. With a switching frequency of 1.6MHz and a power-saving mode, it is suitable for both high-performance and low-power applications. Pololu 5581