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Voltage monitor cuts cost

Posted: 27 Feb 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Intersil? ISL88011-ISL88015?

Intersil Corp. introduced a new family of voltage monitoring supervisors designed to improve system reliability while reducing cost.

According to the press release, the ISL88011-ISL88015 voltage monitors offer both fixed and/or adjustable voltage-monitoring with all the functions for critical monitoring, including power-on reset control, customizable supply voltage supervision, watchdog timer capability and manual reset. Requiring only 5.5?A of supply current, said Intersil, the voltage monitors can help reduce system cost and board space for process control systems, intelligent instruments, embedded control systems, computers and portable or battery-powered equipment. These devices are also suited for critical processor and controller power monitoring.

The voltage monitors are accurate to 1.5 percent from -45C to 85C, and draw little current at 4.5?A to 8?A. These devices also monitor down to 600mV for today's lower power supply voltages and are designed using Intersil's TwinPin design, which combines active-low reset output and manual reset input into one pin to provide maximum functionality in the same number of pins.

Additionally, an enhanced watchdog timer for microcontrollers and microprocessors provides a longer start-up timeout at power-on. This allows an operating system to boot, an FPGA to initialize, or system software to start without having to disable the watchdog timer during this time to avoid erroneous resets. Also, in order to provide designers with a full set of options based on their specific application requirements, the ISL88011, ISL88012 and ISL88013 feature fixed voltage trip points while the ISL88014 and ISL88015 provide user-adjustable voltage trip points.

The new family of voltage monitoring supervisors is available in 5-Pb SOT-23 packages, with prices starting at 88 cents for the ISL88011 and ISL88014, and 99 cents for the ISL88012, ISL88013 and ISL88015 each in 1,000-unit quantities. A complete evaluation kit, the ISL8801XEVAL, is also available.




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