LTC1726IS8-5#PBF

LTC1726 is a triple supply monitor and microprocessor supervisory circuit with adjustable reset and watchdog functions intended for systems with multiple supply voltages. The part has a common open-drain reset output with an adjustable delay. The reset and watchdog time-out periods are both adjustable using external capacitors. Tight 1.5% accuracy specifications and glitch immunity ensure reliable reset operation without false triggering. The active-low RST output is guaranteed to be in the correct state for VCC5/VCC25 or VCC3 down to 1V. The LTC1726 may also be configured to monitor any one or two VCC inputs instead of three, depending on system requirements. The low (16µA typical) supply current makes the LTC1726 ideal for power-conscious systems. Applications include desktop computers, notebook computers, intelligent instruments, portable battery-powered equipment and network servers.

• Monitors three inputs simultaneously (5V, 3.3V and ADJ)
• ±1.5% threshold accuracy over temperature
• Low supply current of 16µA typical
• Adjustable reset timeout, adjustable watchdog timeout
• Active low open-drain reset output
• Power supply glitch immunity
• Guaranteed active-low RESET for VCC3 ≥ 1V or VCC25/VCC5 ≥ 1V
• Reset threshold VCC3 of 3.085V typical (full operating temperature range)
• 8-lead plastic SO package, -40°C to 85°C temperature range

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