The LTC1623 SMBus switch controller is a slave device that controls two high-side N-channel MOSFETs on either the SMBus or the I2C bus. It operates with an input voltage from 2.7V to 5.5V and has a low standby current of 14µA. It has 16 available switches on the same bus and supports a VIL of 0.6V and VIH of 1.4V for DATA and CLK. It is suitable for computer peripheral control, laptop computer power plane switching, portable equipment power control, industrial control systems, and handheld equipment.
The LTC1623 is an SMBus‑compatible dual high‑side switch controller that drives two external N‑channel MOSFETs. It operates from 2.7 V to 5.5 V, features built‑in charge pumps, eight programmable addresses and a low standby current of about 14 µA.
The document provides absolute‑maximum ratings, electrical characteristics, pin descriptions, timing diagrams, typical performance curves, package dimensions and example applications such as PCMCIA slot switching and portable equipment power control.