The L4978 is a step down monolithic power switching regulator delivering 2A at a voltage between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25Ω) to obtain very high efficency and high switching speed. A switching frequency up to 300KHz is achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 50V cover the majority of today’s applications. Features of this new generations of DC-DC converter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedforward regulation, soft-start, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown. The device is available in plastic dual in line, DIP-8 for standard assembly, and SO16W for SMD assembly. https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2020-06-04 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2021-04-03 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2021-04-15 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2021-07-17 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2021-12-04 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2022-04-07 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2022-06-13 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2022-06-25 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2023-12-13 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2024-04-15 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2025-01-05 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2025-01-23 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2025-06-16 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2025-07-04 https://elecena.pl/product/16940969/l4978d013tr-2a-step-down-switching-regulator 2025-10-11