1FEATURES
2• Renewable Energy Grade
• Low 1.6V Operation
• Latching Function: Device Can Latch the Over
Temperature Condition
• Push-pull and Open-Drain Temperature Switch
Outputs
• Very Linear Analog VTEMP Temperature Sensor
Output
• V TEMP Output Short-circuit Protected
• 2.2 mm by 2.5 mm (typ) WSON-6 Package
• Excellent Power Supply Noise Rejection

APPLICATIONS
• PV Power Optimizers
• Wireless Transceivers
• Battery Management
• Automotive

KEY SPECIFICATIONS
• Supply Voltage 1.6V to 5.5V
• Supply Current 8 μA (typ)
• Accuracy, Trip Point Temperature 0°C to 150°C
±2.2°C
• Accuracy, VTEMP 0°C to 150°C ±2.3°C
• VTEMP Output Drive ±100 μA
• Operating Temperature −50°C to 150°C
• Hysteresis Temperature 4.5°C to 5.5°C

DESCRIPTION
The SM72480 is a low-voltage, precision, dual-output,
low-power temperature switch and temperature
sensor. The temperature trip point (TTRIP) is set at the
factory to be 120°C. Built-in temperature hysteresis
(THYST) keeps the output stable in an environment of
temperature instability.
In normal operation the SM72480 temperature switch
outputs assert when the die temperature exceeds
TTRIP. The temperature switch outputs will reset when
the temperature falls below a temperature equal to
(TTRIP − THYST). The OVERTEMP digital output, is
active-high with a push-pull structure, while the
OVERTEMP digital output, is active-low with an opendrain
structure.
The analog output, VTEMP, delivers an analog output
voltage with Negative Temperature Coefficient —
NTC.
Driving the TRIP TEST input high: (1) causes the
digital outputs to be asserted for in-situ verification
and, (2) causes the threshold voltage to appear at the
VTEMP output pin, which could be used to verify the
temperature trip point.
The SM72480's low minimum supply voltage makes it
ideal for 1.8 volt system designs. Its wide operating
range, low supply current , and excellent accuracy
provide a temperature switch solution for a wide
range of commercial and industrial applications.
• Disk Drives