LTC2956
Wake-Up Timer with
Pushbutton Control
FEATURES DESCRIPTION 1.5V to 36V Supply Input Range
nn Adjustable Wake-Up Period: 250ms to 39 Days
nn Adjustable Maximum Awake Time
nn 0.8µA Quiescent Current
nn 0.3µA Shutdown Current
nn Pushbutton Input with Debouncing
nn Low Leakage EN Output Allows DC/DC Converter
Control (LTC2956-1)
nn High Voltage EN Output Drives External P-Channel
MOSFET (LTC2956-2)
nn ±25kV ESD HBM on PB Input
nn 12-Lead 3mm × 3mm QFN and MSOP Packages The LTC®2956 is a micropower, wide input voltage range,
configurable wake-up timer with pushbutton control. It
periodically wakes up and turns on a connected system
to perform tasks like monitoring temperature or capturing
images. After completing the task, the LTC2956 turns the
system off to conserve power. nn The wake-up timer period can be adjusted from 250ms to
39 days using configuration resistors. The system awake
time can be controlled by the input pulse at the SLEEP
pin or adjusted by the capacitor at the ONMAX pin. The …