The ST1S40 is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. ST1S40 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN. The ST1S40 integrates a 95 mΩ high side switch and 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers a very compact solution with a minimum component count. The ST1S40 is available in VFQFPN 4 mm x 4 mm 8 lead package, HSOP-8 and standard SO-8 package. https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2020-06-04 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2021-04-03 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2021-04-15 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2021-07-17 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2021-12-04 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2022-04-07 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2022-06-13 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2022-06-25 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2024-01-16 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2024-11-20 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2025-01-23 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2025-03-28 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2025-04-07 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2025-05-19 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2025-06-07 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2025-06-16 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2025-07-04 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2025-10-30 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2026-01-31 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2026-02-19 https://elecena.pl/product/16940965/st1s40idr-3-a-dc-step-down-switching-regulator 2026-03-28