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.