DESCRIPTION
The LTC®2921 and LTC2922 monitor up to five supplies and force them to track on power-up in multiple supply systems. Using external N-channel pass transistors, the supplies can be ramped up at an adjustable rate. Automatic remote sense switching allows the DC/DC converters to compensate for series voltage drops in the wiring. An incorrect level on one or more of the supplies triggers disconnect of all supplies. Tight 1% accuracy and glitch immunity on the low 0.5V monitoring level ensure no false error disconnects.

FEATURES
■ Tracks Multiple Supplies with MOSFET Switches
■ Monitors 5 Input Voltages Including VCC
■ Guaranteed Threshold Accuracy: ±1% at 0.5V
■ Automatic Remote Sense Switching
■ Adjustable Supply Ramp Rate
■ Overvoltage Monitor
■ Adjustable Electronic Circuit Breaker
■ Adjustable Power-Good Delay
■ Available for VCC Supply Voltages of 5V, 3.3V and 2.5V
■ Available in 16-Pin Narrow SSOP (LTC2921 Series)
   and 20-Pin TSSOP (LTC2922 Series)

APPLICATIONS
■ Desktop Computers
■ Plug-In Cards
■ Telecom Infrastructure
■ Supply Sequencing
■ Instruments