High-Voltage Hysteresis Selectable Temperature Switch


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The RT9726 is a temperature switch with wide input voltage range. The over-temperature threshold point is generated by a negative temperature coefficient (NTC) thermistor and a setting resistor. The RT9726 provides an active-low, open-drain logic output. OT goes LOW when the NTC pin voltage is lower than 50% of the REF voltage threshold. The RT9726 provides the selectable hysteresis mode that can be set by the EN pin Input voltage. The IC is available in SC-70-6 package.


  • Notebook Temperature Monitoring
  • Microprocessor Thermal Management
  • Temperature Control
  • Fan Control
  • Electronic System Protection
  • Notebooks
Key Spec.
Status Active
Vin (min) (V) 4.75
Vin (max) (V) 25
Iq (typ) (mA) 0.1
FLAG Indicator Yes
Switch Type Analog Switch
Package Type SC-70-6
  • Wide Input Voltage Range : 4.75V to 25V
  • 0.5μA Shutdown Current
  • 2 Selectable Hysteresis Threshold
  • Reference Output for Thermal Threshold Setting
  • Open-drain Logic Output
  • RoHS Compliant and Halogen Free
TitleLast UpdateShareDownload
High-Voltage Hysteresis Selectable Temperature Switch2009/09/30
Title Last Update ShareDownload
High-Voltage Hysteresis Selectable Temperature Switch 2015/05/19