---
name: "fanpwr"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/fanpwr"
---

# fanpwr(4)

Fairchild FAN53555 voltage regulator

## NAME

**fanpwr** – Fairchild FAN53555 voltage regulator

## SYNOPSIS

**fanpwr\* at iic?**

## DESCRIPTION

The **fanpwr** driver provides support for the Fairchild FAN53555, Silergy SYR827/828 and Tang Cheng TCS4525 voltage regulators.

## SEE ALSO

[iic(4)](/iic/4.md), [intro(4)](/intro/4.md)

## HISTORY

The **fanpwr** device driver first appeared in OpenBSD 6.4.

## AUTHORS

The **fanpwr** driver was written by Mark Kettenis ⟨*kettenis@openbsd.org*⟩.