The LTC2935CTS8-1#PBF is an ultralow Power Supervisor with power-fail output and open-drain output. The power voltage monitor provides system initialization, power-fail warning and reset generation functions. Low quiescent current (500nA typical) makes the LTC2935 an ideal choice for battery-operated applications. Three binary threshold-select inputs configure one of eight integrated reset thresholds, ranging from 1.6 to 3.45V in pre-determined increments. Early warning of an impending low voltage condition is provided at the power-fail output (PFO), whose threshold is above the configured reset threshold. Supervisory circuits monitor VCC and pull RST low when VCC drops below the configured reset threshold. When VCC is rising from an under-threshold condition, an internal reset timer is started after exceeding the reset threshold by 5%. A 200ms reset timeout delays the return of the RST output to a high state.
Integrated precision attenuators
Eight pin-selectable reset thresholds
Eight pin-selectable power-fail thresholds
Early warning power-fail output
Pushbutton switch connected to the MR input is typically used to force a manual reset
