DC1099A

DC1099A demonstration circuit features the LTC2953, a push button On/Off controller that manages system power via a push button interface. An enable output toggles system power while an interrupt output provides debounced push button status. The interrupt output can be used in menu driven applications to request a system power down. The length of time that the push button must be held low for a power down is configurable with an external capacitor. The LTC2953 allows a user to force an immediate power down by tying /INT with /KILL and a push button turn off. The LTC2953 also features input and output supply monitors. An uncommitted power fail comparator provides real time input monitor threshold information, while a de-glitched under voltage lockout comparator gracefully initiates a system power down. The under voltage lockout comparator prevents from powering from a bad battery.

• Input voltage range from 2.7V to 27V
• 32ms turn on debounce time at push button turn on
• 30mV UVLO input hysteresis at UVLO pin

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party