TMP411-Q1 - ±1°C Remote & Local Temp Sensor | TI Automotive
MPN: TMP411-Q1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.33 | $665.00 |
| 1,000 | $1.19 | $1,190.00 |
Drop-in alternatives for TMP411-Q1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TMP411D-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
TMP411ADGKR
✅ Drop-In📋 Reference alternative (not in catalog)
TMP451-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
TMP461
✅ Drop-In📋 Reference alternative (not in catalog)
ADT7420
✅ Drop-In📋 Reference alternative (not in catalog)
TMP411-Q1 Maximum Ratings & Electrical Characteristics
| Local Temperature Accuracy | ±1°C (max) |
| Remote Temperature Accuracy | ±1°C (max) |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Interface | I2C/SMBus |
| Resolution | 11 bits (0.125°C) |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-VSSOP (DGK) |
| Mounting Type | Surface Mount |
| Number of Remote Channels | 1 |
| Quiescent Current (typical) | 8 µA (shutdown) |
| Alert Outputs | THERM, ALERT/THERM2 (open-drain) |
| N-Factor Correction | Yes |
| Series Resistance Correction | Yes |
| Automotive Grade | AEC-Q100 qualified |
| RoHS Status | Compliant |
TMP411-Q1 Pin Configuration
| Pin 1 | V+ — Power supply input (2.7V to 5.5V) |
| Pin 2 | D+ — Positive connection to remote temperature diode |
| Pin 3 | D- — Negative connection to remote temperature diode |
| Pin 4 | GND — Ground |
| Pin 5 | THERM — Overtemperature alert output (open-drain) |
| Pin 6 | ALERT/THERM2 — Alert output or second THERM output (open-drain) |
| Pin 7 | ADD0 — Address select pin |
| Pin 8 | SCL — I2C/SMBus clock line |
| Pin 9 | SDA — I2C/SMBus data line |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TMP411-Q1 is suitable for 6 applications: Automotive Battery Management System, Engine Control Unit (ECU) Thermal Monitoring, Infotainment System Overheat Protection, Industrial Motor Drive Thermal Protection, Data Center Server Thermal Management, Consumer Electronics Thermal Monitoring.
Automotive Battery Management System
The TMP411-Q1 monitors battery pack temperature with ±1°C accuracy, ensuring safe charging and discharging. Its remote sensing capability allows placement of the sensor diode near the battery cells, while the local sensor monitors ambient temperature. The device's AEC-Q100 qualification and wide temperature range (-40°C to +125°C) make it ideal for automotive environments. The I2C interface enables easy integration with the BMS microcontroller, and the alert pins provide immediate overtemperature warnings, preventing thermal runaway.
Recommended
Engine Control Unit (ECU) Thermal Monitoring
In ECUs, the TMP411-Q1 monitors the temperature of critical components such as the microcontroller and power stages. Its remote diode sensing can be connected to a transistor embedded in the MCU, providing accurate junction temperature without direct contact. The device's N-factor and series resistance correction ensure accurate readings despite PCB trace resistance. The small 8-VSSOP package fits compact ECU designs, and the SMBus interface supports robust communication in noisy automotive environments.
Recommended
Infotainment System Overheat Protection
The TMP411-Q1 protects infotainment processors from overheating by monitoring both local and remote temperatures. Its high accuracy (±1°C) ensures reliable thermal throttling, preventing performance degradation or damage. The device's low quiescent current (8µA in shutdown) is ideal for always-on systems. The alert pins can trigger cooling fans or shutdown sequences, enhancing system reliability. The I2C interface allows the main processor to read temperature data for dynamic power management.
Recommended
Industrial Motor Drive Thermal Protection
In industrial motor drives, the TMP411-Q1 monitors the temperature of power transistors and the motor winding. Its remote sensing capability allows placement of the sensor diode near the IGBT or MOSFET, providing accurate junction temperature. The device's wide supply voltage range (2.7V to 5.5V) and robust SMBus interface make it suitable for industrial environments. The alert outputs can trigger over-temperature shutdown, preventing damage to the drive and motor.
Recommended
Data Center Server Thermal Management
The TMP411-Q1 monitors CPU and GPU temperatures in servers, enabling dynamic fan control and thermal throttling. Its remote diode sensing can be connected to the processor's thermal diode, providing accurate junction temperature. The device's high accuracy and fast conversion rate (up to 8 conversions per second) allow real-time thermal management. The I2C interface is compatible with standard server management controllers, and the alert pins can trigger system shutdown in case of overtemperature.
Recommended
Consumer Electronics Thermal Monitoring
In consumer electronics like laptops and gaming consoles, the TMP411-Q1 monitors the temperature of CPUs, GPUs, and battery packs. Its small package and low power consumption make it ideal for portable devices. The remote sensing capability allows monitoring of multiple hotspots with a single device. The device's accuracy ensures reliable thermal management, preventing overheating and extending product lifespan. The I2C interface is widely supported by consumer SoCs.
Recommended
Recommended Products Summary
Engineering reference data for TMP411-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TMP411D-Q1 | TMP451-Q1 | TMP461 |
|---|---|---|---|---|
| Package | 8-VSSOP (DGK) | 8-VSSOP (DGK) | 8-VSSOP (DGK) | 8-VSSOP (DGK) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Local Accuracy | ±1°C | ±0.8°C | ±0.5°C | ±1°C |
| Remote Accuracy | ±1°C | ±0.8°C | ±0.5°C | ±1°C |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V |
| Interface | I2C/SMBus | I2C/SMBus | I2C/SMBus | I2C/SMBus |
| Number of Remote Channels | 1 | 1 | 1 | 2 |
| Automotive Grade | AEC-Q100 | AEC-Q100 | AEC-Q100 | No |
Key Differentiators
- Automotive-grade qualification (vs TMP411ADGKR)
- N-factor and series resistance correction (vs TMP451-Q1)
- Lower cost (vs TMP451-Q1)
Design Notes
For accurate remote temperature sensing, route the D+ and D- traces as a differential pair, keeping them close together and away from noisy signals. Use a guard ring around the traces if possible. Minimize trace length to reduce series resistance, which the TMP411-Q1 can correct up to 3kΩ. Place a 0.1µF bypass capacitor close to the V+ pin.
Ensure the remote sensing transistor is a diode-connected NPN/PNP or a dedicated thermal diode. The N-factor of the transistor must be known to configure the N-factor correction register. Incorrect N-factor settings can lead to temperature errors. Also, avoid routing D+ and D- near high-frequency switching signals to prevent noise coupling.
The TMP411-Q1 itself generates minimal heat, but the remote sensing diode should be placed close to the heat source for accurate measurement. The local sensor measures the PCB temperature near the IC, which may be lower than the component temperature. For best accuracy, use the remote channel for critical components.
Compliance Information
AEC-Q100 qualified per TI product page. RoHS compliant. REACH compliance assumed based on TI's environmental policy.
