Overview
The TMP300B-Q1 is a low-power, resistor-programmable temperature switch and analog output temperature sensor produced by Texas Instruments. It is designed for over-temperature protection circuits in electronic systems. The device operates within a wide voltage range of +1.8V to +18V and has a low current consumption of 110μA (maximum), making it ideal for power-sensitive systems. The TMP300B-Q1 is available in the SC70-6 package, which offers proven thermal characteristics.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (V+) | 1.8 | 18 | V | |
| Operating Temperature (TA) | -40 | 125 | °C | |
| Storage Temperature (TA) | -55 | 150 | °C | |
| Junction Temperature (TJ) | 150 | °C | ||
| Quiescent Current (IQ) | 110 | μA | ||
| Temperature Measurement Accuracy | ±2 | ±1 | ±6 | °C |
| Analog Output Temperature Sensitivity | 10 | mV/°C | ||
| Output Voltage (VTEMP) at TA = +25°C | 720 | 750 | 780 | mV |
| VTEMP Pin Output Resistance | 210k | Ω |
Key Features
- Programmable Trip Point: The trip temperature can be set using an external resistor.
- Programmable Hysteresis: Available in two settings: 5°C and 10°C.
- Open-Drain Outputs: Suitable for various logic families.
- Low Power Consumption: Maximum current of 110μA.
- Wide Voltage Range: Operates from +1.8V to +18V.
- Analog Output: Provides a temperature reading with a sensitivity of 10mV/°C.
- Compact Package: Available in SC70-6 package.
- Qualified for Automotive Applications: Meets automotive reliability standards.
Applications
- Power-Supply Systems: For thermal monitoring and protection.
- DC-DC Modules: Ensures reliable operation within thermal limits.
- Thermal Monitoring: Monitors temperature in various electronic systems.
- Electronic Protection Systems: Provides over-temperature protection.
Q & A
- What is the operating voltage range of the TMP300B-Q1?
The TMP300B-Q1 operates within a voltage range of +1.8V to +18V.
- What is the maximum current consumption of the TMP300B-Q1?
The maximum current consumption is 110μA.
- How is the trip temperature set for the TMP300B-Q1?
The trip temperature is set using an external resistor (RSET) according to specific equations provided in the datasheet.
- What are the available hysteresis settings for the TMP300B-Q1?
The hysteresis can be set to either 5°C or 10°C.
- What is the temperature sensitivity of the analog output?
The analog output has a temperature sensitivity of 10mV/°C.
- What is the output resistance of the VTEMP pin?
The output resistance of the VTEMP pin is approximately 210kΩ.
- What are the typical applications of the TMP300B-Q1?
It is used in power-supply systems, DC-DC modules, thermal monitoring, and electronic protection systems.
- Is the TMP300B-Q1 qualified for automotive applications?
Yes, it is qualified for automotive applications.
- What package options are available for the TMP300B-Q1?
The TMP300B-Q1 is available in the SC70-6 package.
- How does the TMP300B-Q1 handle ESD?
The device has an ESD rating of 4000V (HBM), 1000V (CDM), and 200V (MM), but it is recommended to handle it with appropriate precautions to avoid damage.
