LTC2909IDDB-3.3#TRMPBF

LTC2909 is a dual input monitor intended for a variety of system monitoring applications. Polarity selection and a buffered reference output allow the device to monitor positive and negative supplies for undervoltage (UV) and overvoltage (OV) conditions. The two inputs have a nominal 0.5V threshold, featuring tight 1.5% threshold accuracy over the entire operating temperature range. Glitch filtering ensures reliable reset operation without false triggering. A third fixed-threshold UVLO monitor on the part’s VCC (1.5% accuracy) is available for standard logic supplies. A three-state input pin sets the input polarity of each adjustable input without requiring any external components. It provides a highly versatile, precise, space conscious, micropower solution for supply monitoring. It is widely used application such as desktop and notebook computers, handheld devices, network servers, core, I/O monitor, automotive etc.

• VCC shunt regulation voltage is 5V typ at (IVCC = 1mA, IVREF = 0)
• VCC input current is 50µA typical at (2.175 <lt/> VCC <lt/> 6V)
• Buffered 1V reference for negative supply offset
• Adjustable reset timeout period
• Selectable internal timeout saves components
• Open-drain active-low RESET output
• VCC UVLO threshold is 2.921V typical
• Operating supply voltage is 0.5V minimum
• Operating temperature is -40°C to 85°C
• Package style is 8-lead plastic DFN

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