Low-Voltage, High-Accuracy, Quad Window Monitor in Small TQFN Package

The MAX16008/MAX16009 are adjustable quad window voltage detectors in a small thin QFN package. These devices are designed to provide a higher level of system reliability by monitoring multiple supply voltages and providing a fault signal when any of the voltages exceed their overvoltage thresholds or fall below their undervoltage thresholds.

These devices offer user-adjustable thresholds that allow voltages to be monitored down to 0.4V. These devices allow the upper and lower trip thresholds of each window detector to be set externally with the use of three external resistors.

Each monitored threshold has an independent opendrain output for signaling a fault condition. The outputs can be wire OR'ed together to provide a single fault output. The open-drain outputs are internally pulled up with a 30µA current, but can be externally driven to other voltage levels for interfacing to other logic levels.

Both devices feature a margin input to disable the outputs during margin testing or any other time after power-up operations. The MAX16009 offers a reset output that deasserts after a reset timeout period after all voltages are within their threshold specifications. The reset timeout is internally set to 140ms (min), but can be externally adjusted to other reset timeouts using an external capacitor. In addition, the MAX16009 offers a manual reset input.

All devices are offered in a 4mm x 4mm TQFN package and are fully specified from -40°C to +125°C.

Applications

* Multivoltage ASICs * Networking/Telecommunication Equipment * Servers * Storage Equipment

* Monitor Four Undervoltage/Overvoltage Conditions

* 1.5% Accuracy Over Temperature

* User-Adjustable Thresholds (Down to 0.4V)

* Open-Drain Outputs with Internal Pullups Reduce the Number of External Components

* Manual Reset Input (MAX16009)

* Margin Enable Input

* Fixed or Adjustable Active-Low RESET Timeout (MAX16009)

* Guaranteed Correct Output Logic State Down to VCC = 1V

* Fully Specified from -40°C to +125°C

* Small, 4mm x 4mm TQFN Package