SM72480
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SNIS156C –NOVEMBER 2010–REVISED APRIL 2013
SM72480 SolarMagic 1.6V, WSON-6 Factory Preset Temperature Switch and Temperature
Sensor
Check for Samples: SM72480
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FEATURES
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.
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Renewable Energy Grade
Low 1.6V Operation
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Latching Function: Device Can Latch the Over
Temperature Condition
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Push-pull and Open-Drain Temperature Switch
Outputs
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 open-
drain structure.
Very Linear Analog VTEMP Temperature Sensor
Output
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VTEMP Output Short-circuit Protected
2.2 mm by 2.5 mm (typ) WSON-6 Package
Excellent Power Supply Noise Rejection
APPLICATIONS
The analog output, VTEMP, delivers an analog output
voltage with Negative Temperature Coefficient —
NTC.
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PV Power Optimizers
Wireless Transceivers
Battery Management
Automotive
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.
Disk Drives
KEY SPECIFICATIONS
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.
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Supply Voltage 1.6V to 5.5V
Supply Current 8 μA (typ)
Accuracy, Trip Point Temperature 0°C to 150°C
±2.2°C
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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
Connection Diagram
TRIP
TEST
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2
3
6
5
4
V
TEMP
GND
DAP
OVERTEMP
V
DD
OVERTEMP
Figure 1. WSON-6 - Top View
See Package Number NGF0006A
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PRODUCTION DATA information is current as of publication date.
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