The PM6644 is a 350 mA valley current limit step-down regulator capable of delivering an adjustable output voltage in the range between 0.9 V and 8 V. A fixed value of output voltage is also available (3.47 V), saving the external resistor divider. It is housed in a small DFN10 3x3 package. The switching regulator is based on COT (constant-on-time) architecture, that assures fast load transient response; the embedded voltage feed-forward provides nearly constant switching frequency operation. The pulse skipping technique increases efficiency at very light load. The switching frequency can be adjusted from 200 kHz to 600 kHz through a simple resistor. The switching regulator can be programmed to regulate a fixed value of 3.47 V or it can deliver an adjustable voltage, depending on the FB pin set-up. https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2020-06-12 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2021-04-03 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2021-04-15 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2021-07-16 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2021-12-04 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2022-04-07 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2022-06-13 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2022-06-25 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2023-08-09 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2023-09-02 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2024-06-16 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2024-11-20 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2025-01-05 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2025-01-23 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2025-03-29 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2025-04-07 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2025-06-16 https://elecena.pl/product/16964284/pm6644tr-350-ma-adjustable-step-down-regulator 2025-07-04