UT01VS33D Single Channel Open Drain 3.3V Voltage Supervisor


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Minimum Purchase:
5 units
Maximum Purchase:
250 units

The UT01VS33D’s function is to monitor vital supply and signal voltages in microprocessor systems. It provides for safe reset during power up, power down and brownout conditions by using an internal precision voltage reference.  The UT01VS33D monitors activity at an independent watchdog input by employing an internal timer and a watchdog output that goes low if the input is not toggled within 1.6s. It provides for precision voltage threshold detection on an independent voltage input which could be used for battery or supply-low monitoring of a supply voltage other than VDD.



- 3.15V to 3.6V Operating voltage range
- Power supply (VDD) monitor set by the internal voltage reference at 3.08V
- Precision Input Voltage Monitor using an internal 0.6V voltage reference
- Watchdog Timer Circuit monitoring activity on WDI input
- Nominal timeout 1.6s 
- RESET_OD output responding to the VDD monitor and the manual reset input MR
- Nominal RESET_OD pulse width 200ms
- RESET_OD level valid for VDD>=1.2V
- Operating Temperature Range -55oC to +125oC
- Low Power, Typical 400uA 
Operational environment:
- Total dose: 300 krad(Si)
- SEL Immune: <110 MeV-cm2/mg @125oC
- SET Immune: <80 MeV-cm2/mg
Packaging options:
- 8-lead dual-in-line flatpack
Standard Microelectronics Drawing 5962-11213 - QML Q and V


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