DC826B-A

LINEAR TECHNOLOGY DC826B-A Evaluation Board, Push Button On/Off Controller, LTC2950-2

demonstration board is to evaluate the performance of the LTC2950-2 push button on/off controller. It contains a pushbutton input with independently programmable ON and OFF debounce times that control the toggling of an open drain enable output. It also contains a simple microprocessor interface to allow for proper system housekeeping prior to power down. Under system fault conditions, an internal KILL timer ensures proper power down. The LTC2950 operates over a wide 2.7V to 26.4V input voltage range to accommodate a wide variety of input power supplies.

.

Adjustable pushbutton on/off timers

.

Low supply Current

.

EN output allows circuit breaker control

.

Simple interface allows graceful µP shut down

.

High input voltage PB pin with internal pull up resistor

.

±10KV ESD HBM on PB input

.

Accurate 0.6V threshold on KILL comparator input