LTC2905IDDB#TRMPBF

LTC2905 is a dual supply monitor intended for systems with two supply voltages. This product provides a precise, space-conscious and micropower solution for supply monitoring. It features a tight 1.5% threshold accuracy over the whole operating temperature range, and glitch immunity to ensure reliable reset operation without false triggering. The open drain active-low RST output is guaranteed to be in the correct state for inputs down to 1V. It also features three programming input pins, which program the threshold and tolerance level without requiring any external components. These three programming pins provide a total of 27 different voltage level and tolerance combinations, eliminating the need to have different parts for development and implementation of different systems with different voltage levels requiring monitoring function. Typical applications are desktop and notebook computers, handheld devices, network servers, core, I/O monitor.

• Monitors two inputs simultaneously, nine threshold combinations
• Guaranteed threshold accuracy: ±1.5% of monitored voltage over temperature
• Internal VCC auto select, power supply glitch immunity
• Adjustable reset time delay
• Open drain active-low RST output, guaranteed active-low RST for V1 ≥ 1V or V2 ≥ 1V
• Min internal operating voltage is 1V (active-low RST in correct logic state, TA=25°C V1=2.5V, V2=1V)
• Programming input current is ±25μA (TA=25°C. V1=2.5V, V2=1V, S1=TOL=V1, S2=0V)
• 8-lead plastic DFN package
• Temperature rating range from -40°C to 85°C

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