RT9726

RT9726 High-Voltage Hysteresis Selectable Temperature Switch General Description 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, opendrain 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. Ordering Information RT9726 Package Type U6 : SC-70-6 Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are : ` RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. ` Suitable for use in SnPb or Pb-free soldering processes. Marking Information Features z Wide Input Voltage Range : 4.75V to 25V z 0.5μA Shutdown Current z 2 Selectable Hysteresis Threshold z Reference Output for Thermal Threshold Setting z Open-drain Logic Output z RoHS Compliant and Halogen Free Applications z Notebook Temperature Monitoring z Microprocessor Thermal Management z Temperature Control z Fan Control z Electronic System Protection Pin Configurations (TOP VIEW) EN REF OT 65 4 23 VIN GND NTC SC-70-6 A1=W A1= : Product Code W : Date code Typical Application Circuit 5V 100k VIN 4.75V to 25V Chip Enable 3.3V 1 VIN OT 4 C1 0.1µF 6 RT9726 REF 5 EN 2 GND NTC 3 System SHDN# R1 570 Thermi...