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