DESCRIPTION

· The NCP1090, NCP1091, and NCP1092 are IEEE 802.3af PoE-PD interface controllers from ON Semiconductor.

· These devices integrate essential functions like detection, classification, under voltage lockout, inrush, and operational current limit.

· NCP1091 features programmable under-voltage, while NCP1092 includes an auxiliary pin for auxiliary supply support.

· Built with a robust high-voltage process, they incorporate a rugged vertical N-channel DMOS for harsh environments.

· They complement ON Semiconductor’s ASSP portfolio, suitable for industrial and security markets.

FEATURES

· Fully compliant with IEEE 802.3af specifications.

· Programmable classification current and adjustable under-voltage lockout (NCP1091 only).

· Open-drain power good indicator and 130 mA inrush current limit.

· 500 mA operational current limit and pass switch disabling input (NCP1092 only).

· Over-temperature protection and industrial temperature range from -40°C to 85°C, with full operation up to 125°C junction temperature.

· 0.5 /C0087 hot-swap pass-switch and vertical N-channel DMOS pass-switch for robustness.

APPLICATIONS

· Industrial devices combining with stepper motor drivers and CAN bus drivers.

· High-voltage interfacing devices for complete solutions in industrial and security markets.

· Suitable for environments requiring robust performance, such as hot swap and cable ESD events.