TMP709AQDBVTQ1 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
TMP709AQDBVTQ1 is an automotive-grade temperature switch and supervisor IC from Texas Instruments, housed in a 5-pin SOT-23 package. It monitors system temperature and provides an open-drain alert output with programmable threshold operation. The device targets automotive thermal protection, power management shutdown, and fan control applications requiring AEC-Q100 qualification.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- TMP709AQDBVTQ1 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Automotive AEC-Q100 qualified temperature supervisor
- Open-drain alert output for thermal protection control
- 5-pin SOT-23 package measuring approximately 2.9 mm × 1.6 mm
- Single analog function in minimal footprint for space-constrained designs
- Compatible with 1.8 V to 5.5 V supply systems
- Factory-programmed temperature threshold option for simplified BOM
- Low quiescent current for battery-sensitive automotive subsystems
Applications
The TMP709AQDBVTQ1 is deployed in automotive electronic control units and power modules where over-temperature protection is required to comply with functional safety requirements. Its compact SOT-23 package and AEC-Q100 qualification make it suitable for placement near heat-generating ICs on engine management, ADAS, and infotainment boards operating across a -40°C to 125°C ambient temperature range. It also serves in automotive battery management systems and DC-DC converters where thermal shutdown prevents damage during overload events.
Specifications
| Pbfree Code | Yes |
| Date Of Intro | 2016-12-30 |
| YTEOL | 0 |
| Analog IC - Other Type | ANALOG CIRCUIT |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Screening Level | AEC-Q100 |
| Supply Current-Max (Isup) | 0.055mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TMP709AQDBVTQ1:
Frequently Asked Questions
What automotive qualification standard does the TMP709AQDBVTQ1 meet?
The TMP709AQDBVTQ1 is qualified to AEC-Q100 Grade 1, meaning it is tested and screened to meet the Automotive Electronics Council's reliability standard for integrated circuits operating in harsh automotive environments from -40°C to 125°C. This qualification is mandatory for components used in powertrain, chassis, and safety-critical automotive modules.
How does the open-drain output of the TMP709AQDBVTQ1 integrate into a thermal protection circuit?
The open-drain alert output pulls low when the monitored temperature crosses the programmed threshold, allowing the signal to interface directly with a microcontroller interrupt pin or gate a power MOSFET for load shutdown. A pull-up resistor, typically 10 kΩ to 100 kΩ connected to the 1.8 V to 5.5 V supply, sets the high-state voltage level. Multiple TMP709 outputs can be wire-OR connected on a single alert bus without additional logic gates.
What supply voltage range does the TMP709AQDBVTQ1 support in automotive power systems?
The TMP709AQDBVTQ1 operates across a 1.8 V to 5.5 V supply range, covering both 3.3 V and 5 V automotive logic rails commonly found in body electronics, infotainment, and sensor interface modules. This range also tolerates the voltage variations typical of automotive battery-backed supplies, which can fluctuate between 9 V and 16 V at the system level before regulation to logic voltages.
Why is the SOT-23 5-pin package advantageous for board-level thermal monitoring in automotive designs?
The 5-pin SOT-23 package measures approximately 2.9 mm × 1.6 mm with a 0.95 mm lead pitch, occupying minimal board area while allowing placement within a few millimeters of the heat source being monitored. This proximity reduces thermal gradient error between the component junction temperature and the sensor reading, improving protection accuracy by several degrees Celsius compared to a remote sensor location.
In which automotive subsystems is the TMP709AQDBVTQ1 most commonly applied?
The TMP709AQDBVTQ1 is most commonly used in automotive DC-DC converters, battery management systems, and ADAS sensor modules, where junction temperatures can exceed 100°C during peak load conditions. It also appears in motor-driver thermal protection circuits where a 125°C shutdown threshold prevents insulation damage. Its low quiescent current and compact form factor further suit it to always-on body-control modules that must minimize standby power consumption.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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