LTC2902-1IGN#PBF

LTC2902-1 is a programmable supply monitor for systems with upto four supply voltages. One of 16 preset or adjustable voltage monitor combinations can be selected using an external resistor divider connected to the program pin. The preset voltage thresholds are digitally programmable to 5%, 7.5%, 10% or 12.5% below the nominal operating voltage, and are accurate to 1.5% over temperature. All four voltage comparator outputs are connected to separate pins for individual supply monitoring. The reset delay time is adjustable using an external capacitor. Tight voltage threshold accuracy and glitch immunity ensure reliable reset operation without false triggering. The RST output is guaranteed to be in the correct state for VCC down to 1V and may be disabled during supply margin testing. It is widely used in application such as desktop and notebook computers, multivoltage systems, telecom equipment, portable battery-powered equipment, network servers etc.

• Open-drain active-low RST Output
• Power supply glitch immunity, guaranteed RESET for VCC ≥ 1V
• Individual non-delayed monitor outputs for each supply
• Adjustable reset time, RESET disable pin for margining applications
• Guaranteed threshold accuracy: ±1.5% of monitored voltage over temperature
• Low supply current is 43µA typical
• Operating temperature is -40°C to 85°C
• Package style is 16-lead plastic SSOP

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