TMP300 1.8-V, Resistor-Programmable Temperature Switch and

Analog Out Temperature Sensor in SC70

1 Features

• Accuracy: ±1°C (typical at +25°C)

• Programmable trip point

• Programmable hysteresis: 5°C/10°C

• Open-drain outputs

• Low power: 110 μA (maximum)

• Wide voltage range: +1.8 V to +18 V

• Temperature range: –40°C to +125°C

• Analog out: 10mV/°C

• SC70-6 and SOT23-6 packages

2 Applications

• Power-supply systems

• DC-DC modules

• Thermal monitoring

• Electronic protection systems

3 Description

The TMP300 is a low-power, resistor-programmable,

digital output temperature switch. The device allows

a threshold point to be set by adding an external

resistor. Two levels of hysteresis are available. The

TMP300 has a VTEMP analog output that can be used

as a testing point or in temperature-compensation

loops.

Available in two micropackages with proven thermal

characteristics, low current consumption, and a supply

voltage as low as 1.8 V, the TMP300 is designed

for power-sensitive systems that require simple and

reliable thermal management.

Package Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TMP300

SOT-23 (6)

2.90 mm × 1.60 mm

SC70 (6)

2.00 mm × 1.25 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

1

T

SET

6

V+

2

GND

5

V

TEMP

3

OUT

4

HYST

SET

Not to scale

Pinout

R

PULL-UP

210kW

(1)

R

SET

T

SET

OUT

V+

HYST

SET

V

TEMP

TMP300

3 A

m

Proportional

to T

A

NOTE: Thinfilm resistor with approximately 10% accuracy;

however, this accuracy error is trimmed out at the factory.

Application Schematic

TMP300

SBOS335F – JUNE 2005 – REVISED JANUARY 2023

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.