1% Accurate, Low-Voltage, Quad Window Voltage Detector

Windowed Voltage Detector Provides the Highest Accuracy at 1%

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The MAX16063 is a 1% accurate, adjustable, quad window voltage detector in a small thin QFN package. This device is 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.

The MAX16063 offers user-adjustable voltage thresholds that allow voltages to be monitored down to 0.4V. This allows 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 open-drain output for signaling a fault condition. The outputs can be wire-ORed 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.

Features include a margin input to disable the outputs during margin testing or any other time after power-up operations. Also featured is 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 MAX16063 offers a manual reset input.

This device is offered in a 4mm x 4mm thin QFN package and is fully specified from -40°C to +125°C.
MAX16063: Typical Operating Circuit MAX16063: Typical Operating Circuit Enlarge+

Key Features

  • Monitor Four Undervoltage/Overvoltage Conditions
  • 1% Accuracy Over Temperature
  • User-Adjustable Voltage Thresholds (Down to 0.4V)
  • Open-Drain Outputs with Internal Pullups Reduce the Number of External Components
  • Manual Reset Input
  • Margin Enable Input
  • Fixed or Adjustable Active-Low RESET Timeout
  • Guaranteed to Remain Asserted Down to VCC = 1V
  • Fully Specified from -40°C to +125°C
  • Small, 4mm x 4mm Thin QFN Package


  • Automotive
  • Multivoltage ASICs
  • Networking/Telecommunications Equipment
  • Servers
  • Storage Equipment

See parametric specs for Supervisors (4 Monitored Voltages) (22)

Part NumberInterfaceReset Thresh.
Reset OuttRESETWatchdog FeatureSupervisor FeaturesReset Thresh. Accur.
min@ +25°CmaxSee Notes
MAX16063 R/C Adjustable
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Open Drain
With Internal Pull-Up
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
No Watchdog
Adjustable Reset Input
Manual Reset
Overvoltage/Window Monitor
$7.81 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: MAX16063.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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