LTC2934IDC-1#TRMPBF

LTC2934-1 is an ultra-low power voltage monitor provides system initialization, power-fail warning and reset generation functions. Low quiescent current (500nA typical) makes the device an ideal choice for battery-operated applications. Precision power-fail and reset voltages can be configured independently. Early warning of an impending low voltage condition is provided at the power-fail output (PFO) when the PFI input falls below 0.4V. Supervisory circuits monitor the ADJ input and pull RST low when ADJ falls below 0.4V. When ADJ is rising from an under-threshold condition, an internal reset timer is started after exceeding the ADJ threshold by 5%. The reset timeout delays the return of the RST output to a high state. A pushbutton switch connected to the MR input is typically used to force a manual reset. It is widely used in application such as portable equipment, battery-powered equipment, security systems, point-of-sale devices, wireless systems etc.

• ±1.5% (max) accuracy over temperature
• Operates down to 1.6V supply
• Adjustable reset threshold
• Adjustable power-fail threshold
• Early warning power-fail output
• Reset timeout period is 200ms typical
• Outputs active-low RST and active-low PFO are available with open-drain
• Operating temperature is -40°C to 85°C
• Package style is 8-lead plastic DFN

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