The Pololu 5267 is based on the APM81815 synchronous buck regulator and enables step-down conversion from an input voltage range of 5.05 - 72 V to a stable 5 V output. The design uses an Allegro MicroSystems IC intended for industrial and automotive applications, including systems powered from 12 V, 24 V, and 48 V supply rails.

The regulator operates at an internally set switching frequency of 2.15 MHz and integrates key power-stage components, simplifying PCB layout and reducing EMI emissions. The module supports continuous output current up to 1.1 A. Integrated protection features include undervoltage lockout (UVLO), cycle-by-cycle current limiting, short-circuit protection, output overvoltage and undervoltage protection, and thermal shutdown. The PGOOD open-drain output allows monitoring of the output voltage status.
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
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