TMP411-Q1 - ±1°C Remote & Local Temp Sensor | TI Automotive
MPN: TMP411-Q1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.45 | $1.45 |
| 10 | $1.3 | $13.00 |
| 100 | $1.05 | $105.00 |
| 500 | $0.88 | $440.00 |
| 1,000 | $0.72 | $720.00 |
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:
TMP411AQDGKRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
TMP411D-Q1
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TMP411
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →TMP451-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
TMP461
✅ Drop-In📋 Reference alternative (not in catalog)
ADT7461
⚡ Same Package📋 Reference alternative (not in catalog)
TMP411-Q1 Maximum Ratings & Electrical Characteristics
| Sensor Type | Remote and Local Digital Temperature Sensor |
| Local Accuracy | ±1°C |
| Remote Accuracy | ±1°C |
| Supply Voltage | 2.7 V to 5.5 V |
| Ambient Temperature Range | -40°C to +125°C |
| Remote Measurement Range | up to 150°C |
| Interface | 2-wire (I2C/SMBus compatible) |
| Resolution | 12 b (programmable 9-12 bit) |
| Shutdown Quiescent Current | approximately 8 uA |
| Package | VSSOP-8 (DGK) |
| Automotive Qualification | AEC-Q100 |
| Mounting Type | Surface Mount |
| Features | N-factor correction, series resistance cancellation, programmable thresholds, min/max monitors, diode fault detection, alert |
| Alert Function | Temperature alert (ALERT pin) |
| RoHS Status | Compliant |
TMP411-Q1 Pin Configuration
| Pin 1 | D+ — Remote diode positive sense input |
| Pin 2 | D- — Remote diode negative sense input |
| Pin 3 | ALERT — Temperature alert output (open-drain) |
| Pin 4 | GND — Ground |
| Pin 5 | SDA — Two-wire serial data (I2C/SMBus) |
| Pin 6 | SCL — Two-wire serial clock (I2C/SMBus) |
| Pin 7 | ADD1 — Address select pin (verify with datasheet) |
| Pin 8 | VS — Power supply, 2.7V to 5.5V |
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 Systems, Engine Control Units, Automotive Infotainment Processors, CPU/GPU Thermal Monitoring in Servers, Industrial Control and Motor Drives, Telecom and Networking Equipment.
Automotive Battery Management Systems
The TMP411-Q1's AEC-Q100 qualification, -40°C to +125°C ambient range, and series-resistance cancellation make it ideal for BMS boards where cell-monitoring PCB traces add resistance error. Remote channel tracks power FET or MCU junction temperature to 150°C while the local channel guards the controller board.
Recommended
Engine Control Units
In ECUs, the TMP411-Q1 monitors MCU junction temperature via the remote diode channel with ±1°C accuracy and provides diode fault detection for fail-safe operation under hood temperatures. Its 8 uA shutdown current supports key-off power budgets, and the ALERT pin triggers derating before thermal limits are exceeded.
Recommended
Automotive Infotainment Processors
High-performance infotainment SoCs need accurate die-temperature telemetry. The TMP411-Q1's N-factor correction matches the SoC's thermal diode ideality, preserving ±1°C accuracy, while programmable resolution (up to 12-bit, 0.0625°C steps) enables fine-grained fan and clock-throttling control in dashboards and displays.
Recommended
CPU/GPU Thermal Monitoring in Servers
The TMP411-Q1 measures processor junctions remotely with ±1°C accuracy over I2C/SMBus, including SMBus alert-response for multi-drop racks. Series-resistance correction cancels long trace runs on server boards, and min/max temperature registers simplify logging in data-center thermal management firmware.
Recommended
Industrial Control and Motor Drives
In industrial drives and PLCs, the TMP411-Q1 supervises IGBT-gate-driver MCUs and power stages remotely to 150°C. Programmable threshold limits and the temperature alert allow deterministic over-temperature interrupts; the two-wire bus integrates easily with existing I2C sensor networks in noisy cabinets.
Recommended
Telecom and Networking Equipment
Line cards and routers use the TMP411-Q1 to track ASIC and FPGA junction temperatures for fan-speed control. The 12-bit programmable resolution gives 0.0625°C granularity for closed-loop cooling, while SMBus compatibility lets one controller poll multiple sensors across the backplane with standard alert-response addressing.
Recommended
Recommended Products Summary
Engineering reference data for TMP411-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TMP411AQDGKRQ1 | TMP451-Q1 | ADT7461 |
|---|---|---|---|---|
| Package | VSSOP-8 (DGK) | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | MSOP-8 - not pin-to-pin |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Accuracy | ±1°C | ±1°C | ±1°C [DATA_NEEDED confirm] | ±1°C [DATA_NEEDED confirm] |
| Automotive Grade (AEC-Q100) | Qualified | Qualified | Qualified | No |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 3.0 V to 5.5 V |
| Shutdown Current | ~8 uA | ~8 uA | [DATA_NEEDED] | [DATA_NEEDED] |
| Software/Register Compatibility | Reference | Identical register map | Mostly similar map (TI E2E) | Different map - firmware change |
| N-Factor / Series-R Correction | Yes | Yes | Yes | Partial (no full N-factor correction) |
Key Differentiators
- Programmable N-factor and series-resistance correction (vs ADT7461)
- AEC-Q100 automotive qualification with 8 uA shutdown current (vs TMP411 (commercial))
- Higher accuracy grade available in same footprint (vs TMP451-Q1)
Design Notes
Route the D+/D- remote sense traces as a short, tightly coupled differential pair, away from switching regulator nodes and clock lines. Long traces add series resistance; enable the TMP411-Q1 series-resistance cancellation register to cancel typical PCB trace resistance (up to ~100 ohm supported per TI guidance in the datasheet).
Decouple VS with a 0.1 uF ceramic capacitor placed within 2 mm of pin 8. The device draws very little supply current, but supply noise on D+/D- sampling appears as temperature error; a clean 3.3V or 5V rail and local decoupling keep remote readings within the ±1°C specification.
Configure the N-factor correction register to match the external transistor ideality factor - using the default with a non-ideal diode causes systematic offset. Verify address pins (ADD1) match your I2C address plan, and always use pull-ups on SDA, SCL, and the open-drain ALERT line; enable SMBus timeout in electrically noisy automotive buses.
Compliance Information
AEC-Q100 automotive qualification per TI product page; RoHS compliant per standard TI production. Obtain REACH/halogen-free declarations from TI material certificates.
