DESCRIPTION
The LTC ®1623 SMBus switch controller is a slave device that controls two high-side N-channel MOSFETs on either the SMBus or the I2C bus. The LTC1623 operates with an input voltage from 2.7V to 5.5V with a low standby current of 14µA (at 3.3V). In accordance with the SMBus specification, the LTC1623 maintains the 0.6V VIL and 1.4V VIH input thresholds throughout the supply voltage range.

FEATURES
■ SMBus and I2C Compatible
■ Built-In Charge Pumps Drive N-Channel Switches
■ 16 Available Switches on the Same Bus
■ 0.6V VIL and 1.4V VIH for DATA and CLK
■ Available in 8-Lead MSOP and S0 Packages
■ Low Standby Current: 14µA
■ Eight Addresses from Two Three-State Address Pins
■ Internal Power-On Reset Timer
■ Internal Undervoltage Lockout
■ No Need for External Pull-Up Resistors at Output
■ No Need for Secondary Power Source

APPLICATIONS
■ Computer Peripheral Control
■ Laptop Computer Power Plane Switching
■ Portable Equipment Power Control
■ Industrial Control Systems
■ Handheld Equipment