Overview
The TMP235AQDBZRQ1 is a precision CMOS integrated-circuit linear analog temperature sensor produced by Texas Instruments. This device is part of the TMP23x-Q1 family, designed for automotive applications, and is AEC-Q100 qualified. It offers high accuracy and a wide operating temperature range, making it suitable for various automotive systems from powertrain to infotainment.
The sensor provides an output voltage proportional to temperature, with a positive slope of 10 mV/°C over the full –40°C to +150°C temperature range. It operates with a supply voltage range of 2.3 V to 5.5 V and features low power consumption, with a typical quiescent current of 9 µA.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBZ) | |
| Pins | 3 | |
| Operating Temperature Range | –40°C to +125°C | °C |
| Supply Voltage Range | 2.3 V to 5.5 V | V |
| Temperature Accuracy (–40°C to +150°C) | ±2.5°C | °C |
| Temperature Coefficient (Sensor Gain) | 10 mV/°C | mV/°C |
| Output Voltage Offset at 0°C | 500 mV | mV |
| Quiescent Current | 9 µA | µA |
| Maximum Output Current | 500 µA | µA |
| Maximum Load Capacitance | 1000 pF | pF |
| Turn-On Time | 800 µs | µs |
Key Features
- AEC-Q100 qualified for automotive applications
- Functional Safety-Capable with documentation available for system design
- Tight accuracy across a wide temperature range: ±2.5°C (maximum) from –40°C to +150°C
- Positive slope sensor gain: 10 mV/°C, with an output voltage offset of 500 mV at 0°C
- Wide operating supply voltage range: 2.3 V to 5.5 V
- Short-circuit protected output
- Low power consumption: 9 µA typical quiescent current
- Strong output for driving loads up to 1000 pF
- Available in 3-pin SOT-23 (DBZ) and 5-pin SC70 (DCK) surface mount packages
- Footprint compatible with industry-standard LMT8x-Q1, LM50-Q1, and LM20 temperature sensors
- Cost-effective alternative to thermistors
Applications
- Automotive head units
- Electric power steering (EPS)
- Shifter systems
- Battery management systems (BMS)
- Gasoline engine management
Q & A
- What is the operating temperature range of the TMP235AQDBZRQ1?
The operating temperature range is –40°C to +125°C, with an extended range of –40°C to +150°C for the TMP235-Q1 grade 0 device.
- What is the supply voltage range for the TMP235AQDBZRQ1?
The supply voltage range is 2.3 V to 5.5 V.
- What is the temperature accuracy of the TMP235AQDBZRQ1?
The temperature accuracy is ±2.5°C over the full –40°C to +150°C temperature range.
- What is the sensor gain of the TMP235AQDBZRQ1?
The sensor gain is 10 mV/°C.
- What is the typical quiescent current of the TMP235AQDBZRQ1?
The typical quiescent current is 9 µA.
- What is the maximum output current of the TMP235AQDBZRQ1?
The maximum output current is 500 µA.
- Is the TMP235AQDBZRQ1 AEC-Q100 qualified?
Yes, the TMP235AQDBZRQ1 is AEC-Q100 qualified for automotive applications.
- What are the available package options for the TMP235AQDBZRQ1?
The available package options are 3-pin SOT-23 (DBZ) and 5-pin SC70 (DCK) surface mount packages.
- What is the turn-on time for the TMP235AQDBZRQ1?
The turn-on time is 800 µs to reach accuracy within ±0.5°C.
- Can the TMP235AQDBZRQ1 drive capacitive loads?
Yes, it can drive capacitive loads up to 1000 pF.
