Reset Chip Monitors Power Supplies In Computers, TVs & More


Diodes has unveiled a micro-power voltage detector to support the supervisory circuits of microprocessors and microcontrollers. The APX803L works by enabling accurate monitoring of voltage levels and generates a reset signal whenever a supply rail falls below a defined threshold. This is useful for computers, communications equipment, portable battery-powered devices, as well as televisions operating in standby mode.

Offered in a detection voltage level range of 1.2V to 5.0V in 0.1V steps, the APX803L provides a threshold accuracy of ±1.5%, while consuming just 1μA and requiring no external components.

Whenever the monitored VCC power supply rail drops below the chosen threshold, the APX803L asserts a reset signal within 20μs that is held until the supply rail recovers to a level above the threshold.

The device’s reset pin provides an open-drain, active-low output with device ordering options that allow for delay times of 0ms, 55ms, 220ms, or 450ms.


The APX803L is available in 3-pin SOT23, SOT323, and SC59 packages, as well as a 5-pin SOT25 package, and supports drop-in replacements and original designs.

To know more, view the full Press release

Resistors Survive Hundreds Of 3KV Surges Without Failing


Please enter your comment!
Please enter your name here

Are you human? *