fanpwr(4) on OpenBSD
The text cf6d750886a4, as OpenBSD 7.2, OpenBSD 7.1, OpenBSD 7.0, OpenBSD 6.9, OpenBSD 6.8, OpenBSD 6.7, OpenBSD 6.6, OpenBSD 6.5, OpenBSD 6.4 shipped it.
Fairchild FAN53555 voltage regulator
The text cf6d750886a4, as OpenBSD 7.2, OpenBSD 7.1, OpenBSD 7.0, OpenBSD 6.9, OpenBSD 6.8, OpenBSD 6.7, OpenBSD 6.6, OpenBSD 6.5, OpenBSD 6.4 shipped it.
Fairchild FAN53555 voltage regulator