The STEVAL-ISA101V1 demonstration board is based on the L5973D, a step-down monolithic switching regulator with 2 A DC (2.5 A switch peak current) current capability over the output voltage range (1.235 V to 36 V). The operating input voltage ranges from 4 V to 36 V. The device is based on BCD5 technology. The embedded power element is a P-channel D-MOS transistor so the driving stage does not require any bootstrap capacitor and the duty cycle can range up to 100%. An internal oscillator fixes the switching frequency at 250 kHz. A synchronization pin is available when a higher switching frequency (up to 700 kHz) is required. Pulse-by-pulse current protection and a frequency foldback feature always guarantee an effective short-circuit protection. Other features include voltage feed-forward, protection against feedback disconnection, inhibit and thermal shutdown. Previous sales code: EVAL5973D. https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2017-03-26 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2017-09-09 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2020-06-05 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2021-04-02 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2021-11-03 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2022-06-12 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2022-06-24 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2023-09-01 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2024-12-29 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2025-03-21 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2026-06-04 https://elecena.pl/product/8156573/steval-isa101v1-2-a-dc-step-down-switching-regulator-with-4-v-36-v-input-voltage-range-based-on-the-l5973d 2026-08-30