ISL88041IBZ

ISL88041 is a quad voltage-monitoring supervisor designed to monitor voltages ≥0.7V. Low voltage detection circuitry protects the user 's system from low voltage conditions, resetting the system when any of the monitored power supply voltages V1MON-V4MON fall below their respective minimum voltage thresholds. The reset signal remains asserted until all of these voltages return to proper operating levels and stabilize. Each rail’s VMON point is independently adjustable by using an external resistor divider. The VMON inputs will ignore transients of less than 30µs on the monitored supplies, and the active-low RST output is guaranteed to be valid down to VDD = 1V. Applications include graphics cards, multi voltage DSPs and processors, µP voltage monitoring, embedded control systems, intelligent instruments, medical equipment, network routers, portable battery-powered equipment, set-top boxes and telecommunications systems.

• Adjustable voltage inputs monitor voltages ≥0.7V
• Active-low RST output
• Manual reset capability
• Reset signal valid down to VDD = 1V
• Integrated 20Kohm pull-up resistor on active-low RST
• Glitch immunity on voltage monitoring inputs
• Temperature range from -40 to +85°C, 8 lead SOIC package
• Supply voltage range from 2.7V to 4V
• VDD supply current (VMON <gt/> VREF) of 165µA
• Adjustable reset threshold voltage of 635mV typically