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Texas Instruments TPS389006004RTERQ1
- Part No.:
- TPS389006004RTERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS389006004RTERQ1.pdf
- Description:
- TPS389006004RTERQ1
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS389006004RTERQ1 from Texas Instruments is an ASIL-D functional safety-compliant six-channel I²C-programmable window voltage supervisor with two remote sense inputs, ±6 mV threshold accuracy over –40°C to +125°C, 2.5 V to 5.5 V supply range, and 200 µA standby current. It monitors low-voltage, narrow-margin rails in automotive ADAS and sensor fusion systems.
For engineers reviewing the TPS389006004RTERQ1 datasheet, TPS389006004RTERQ1 pinout, TPS389006004RTERQ1 application, or TPS389006004RTERQ1 equivalent, key selection criteria include I²C-configurable 5 mV/20 mV threshold granularity, built-in 8-bit ADC for real-time voltage telemetry, CRC/PEC error checking, sequence logging with SYNC tagging, and active-low open-drain NIRQ output.
Technical Context
The TPS389006004RTERQ1 implements six independent high-accuracy window comparators with programmable UV/OV thresholds, dual remote sense inputs (RS_1/2) for core rail voltage drop compensation, and integrated 8-bit ADC for low-frequency fault monitoring. Its digital core supports I²C Fast Mode Plus (1 MHz), configurable glitch immunity, and fault logging with timestamp resolution of 50 µs.
It features hardware-level ASIL-D compliance per ISO 26262, including systematic capability up to ASIL D, hardware fault tolerance, cyclic redundancy checking (CRC), packet error checking (PEC), and BIST-enabled power-on reset validation. The device operates across –40°C to +125°C with undervoltage lockout at 2.48 V and POR at 1.65 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 6 independent voltage monitor channels with window (OV/UV) detection |
| Threshold Accuracy | ±6 mV over –40°C to +125°C - enables tight margin monitoring of sub-1 V SoC rails |
| Input Range | 0.2 V to 5.5 V with 5 mV steps (0.2–1.475 V) and 20 mV steps (0.8–5.5 V) - supports precise low-voltage core rail supervision |
| Remote Sense | 2 dedicated pins (RS_1/2) - compensates PCB trace IR drop for accurate core voltage measurement |
| Quiescent Current | 200 µA in idle mode - minimizes system power overhead during sleep states |
| I²C Interface | Up to 1 MHz (Fast Mode Plus) with CRC/PEC - ensures robust communication in noisy automotive environments |
| Output Type | Active-low open-drain NIRQ only - compatible with standard MCU interrupt inputs without level-shifting |
Pinout & Package
TPS389006004RTERQ1 is housed in a 16-pin WQFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per TI SNVSBM4D Rev. O (Oct 2024).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MON1–MON6 | Voltage monitor inputs | Accept 0.2–5.5 V monitored rails; each independently configurable as OV, UV, or window |
| RS_1/2 | Remote sense input | Compensates for voltage drop on high-current paths - enables accurate core rail monitoring |
| NIRQ | Interrupt output | Active-low open-drain signal asserted on any fault - requires external pull-up; no NRST pin on this variant |
| SCL / SDA | I²C interface | Supports 1 MHz Fast Mode Plus; open-drain with external 10 kΩ pull-ups required |
| ADDR | I²C address select | Configures one of eight I²C addresses (0x30–0x37) via resistor divider |
| ACT / SLEEP | Enable control | ACT high enables monitoring; SLEEP low enters ultra-low-power deep-sleep mode (275–380 µA) |
| SYNC | Sequencing tag | Enables synchronized rail timestamping across multiple devices for power-on/off sequence logging |
| VDD / GND | Power supply | Operates from 2.5–5.5 V; exposed pad must be soldered for thermal and electrical integrity |
Key Features
| Feature | Design Value |
|---|---|
| ASIL-D Functional Safety Compliance | Hardware and systematic capability certified to ISO 26262 ASIL-D - reduces safety case effort for automotive ECU designs |
| I²C-Programmable Thresholds | 5 mV resolution below 1.475 V and 20 mV above - eliminates need for external resistor networks and associated tolerance stack-up |
| Built-in 8-bit ADC | Real-time voltage readouts with 5 mV/20 mV LSB - provides redundant LF fault detection alongside comparator-based HF monitoring |
| Sequence Logging with SYNC | Timestamp resolution of 50 µs and ±5% accuracy - enables deterministic power-rail sequencing verification across multi-device systems |
| No External Components Required | Internal precision resistors for UV/OV thresholds - reduces BOM count, board area, and calibration complexity |
Applications
| Automotive ADAS Domain Controller | Sensor Fusion Module |
|---|---|
Use Scenario: Supervises six independent power rails (e.g., SoC core, memory, ISP, radar MMIC, CAN transceiver, camera interface) in a centralized ADAS controller. IC Role / Device Role / Timing Role: Window voltage supervisor with remote sense on critical core rails; asserts NIRQ within 25 µs of fault detection to trigger MCU-safe shutdown. Use Value: ±6 mV accuracy ensures reliable detection of <100 mV droop on 0.8 V SoC cores - preventing silent data corruption during transient load events. | Use Scenario: Monitors tightly regulated 1.2 V, 1.8 V, and 3.3 V rails powering heterogeneous sensors (LiDAR, IMU, ultrasonic) and preprocessing ASICs. IC Role / Device Role / Timing Role: I²C-configurable supervisor with SYNC pin coordinated across multiple TPS389006004RTERQ1 units to log rail turn-on order and timing margins. Use Value: Sequence timestamp resolution of 50 µs validates that 1.2 V core powers before 1.8 V I/O - meeting strict boot sequencing requirements for sensor data integrity. |
| Electric Powertrain Control Unit | Automotive Camera ECU |
Use Scenario: Supervises isolated DC-DC outputs feeding gate drivers, position sensors, and MCU subsystems in inverter control modules. IC Role / Device Role / Timing Role: Six-channel window monitor with remote sense on high-current motor control rails; uses CRC/PEC to ensure command integrity during I²C reconfiguration. Use Value: Built-in BIST and POR at 1.65 V guarantee known-good state after cold crank - eliminating risk of undetected brownout-induced latch-up. | Use Scenario: Ensures stable operation of image signal processor, MIPI PHY, and CIS power domains under stop-start and load-dump conditions. IC Role / Device Role / Timing Role: Low-quiescent-current (200 µA) supervisor enabling always-on monitoring during vehicle sleep modes; NIRQ wakes host MCU on rail fault. Use Value: 200 µA idle current extends battery life in parked-camera applications - meeting OEM requirements for <5 µA total system sleep current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS389R06RTERQ1 | Includes NRST open-drain reset output; identical 6-channel + 2 remote sense architecture and ASIL-D compliance | Required where system-level reset assertion (not just interrupt) is mandated by safety architecture | Select TPS389R06RTERQ1 if hardware reset signaling to MCU or FPGA is needed; TPS389006004RTERQ1 suffices when NIRQ-driven software reset is acceptable |
| TPS388006RTERQ1 | ASIL-B rated; lacks ADC, sequence logging, SYNC, and CRC/PEC; same 6-channel + 2 remote sense pinout | Targeted at non-safety-critical infotainment or body electronics with relaxed functional safety requirements | Choose TPS388006RTERQ1 only for cost-sensitive, non-ASIL-D applications - not a drop-in replacement due to missing safety features and reduced diagnostics |
Compared with TPS389R06RTERQ1, TPS389006004RTERQ1 omits NRST but retains identical monitoring accuracy, remote sense, and safety documentation - making it optimal for interrupt-driven fault response. Versus TPS388006RTERQ1, it delivers full ASIL-D capability, ADC telemetry, and sequence logging essential for ADAS domain controllers.
Availability
TPS389006004RTERQ1 is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, sensor fusion modules, electric powertrain control units, and automotive camera ECUs requiring stable component supply across extended temperature and safety-critical lifecycles.
Supply support for TPS389006004RTERQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with deep expertise in automotive-grade IC design, functional safety, and high-reliability packaging.
The TPS389006-Q1 product line targets ASIL-D automotive safety systems requiring multichannel, high-accuracy voltage supervision with diagnostic coverage - specifically engineered for ADAS, automated driving, and zonal ECU architectures.
FAQ
What is the function of the RS_1/2 pin on the TPS389006004RTERQ1?
The RS_1/2 pin on the TPS389006004RTERQ1 serves as a dual-purpose remote sense input, enabling compensation for voltage drop across PCB traces when monitoring high-current rails like SoC cores. It connects directly to the point-of-load to improve measurement accuracy to ±6 mV over –40°C to +125°C. This pin is distinct from MON1–MON6 and is not used for standard voltage monitoring - its sole role is remote sensing for enhanced precision in critical power domains.
Does the TPS389006004RTERQ1 provide a hardware reset output (NRST)?
No, the TPS389006004RTERQ1 does not include an NRST output. It provides only the active-low open-drain NIRQ interrupt output. The NRST pin is present on the TPS389R06RTERQ1 variant but omitted in the TPS389006004RTERQ1. System-level reset must be implemented externally using the NIRQ signal and host MCU firmware - a design choice that reduces pin count while maintaining full ASIL-D fault reporting capability via interrupt-driven diagnostics.
How is the I²C address configured on the TPS389006004RTERQ1?
The I²C address of the TPS389006004RTERQ1 is set via the ADDR pin, which accepts a voltage divider to select one of eight possible addresses (0x30–0x37). Valid resistor values range from 5.36 kΩ (0x30) to 80.6 kΩ (0x37), as specified in the Electrical Characteristics table. The ADDR pin voltage must remain between 0 V and 1.8 V during operation, and the internal pull-down ensures default behavior if left unconnected - ensuring robust bus initialization without floating node risks.
What is the purpose of the SYNC pin on the TPS389006004RTERQ1?
The SYNC pin on the TPS389006004RTERQ1 enables synchronized sequence logging across multiple devices. When driven by an external controller or daisy-chained with other TPS389006004RTERQ1 units, it tags rail power-up/down events with precise timestamps (50 µs resolution). This allows deterministic validation of power sequencing order and timing margins - critical for meeting ISO 26262 requirements in ADAS domain controllers where incorrect rail sequencing can cause latent functional failures.
What are the operating temperature limits and qualification status of the TPS389006004RTERQ1?
The TPS389006004RTERQ1 is AEC-Q100 qualified for Grade 1 operation, with guaranteed functionality from –40°C to +125°C ambient temperature. It meets ASIL-D functional safety requirements per ISO 26262, including documented hardware capability, systematic development artifacts, and diagnostic coverage metrics. Thermal performance is characterized with RθJA = 53.4°C/W (WQFN package), and junction temperature is limited to 150°C maximum - supporting reliable deployment in under-hood and high-density ECU environments.
TPS389006004RTERQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 6 Selectable Threshold Combinations
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-WQFN (3x3)
TPS389006004RTERQ1 FAQ
1.How can I place an order for TPS389006004RTERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS389006004RTERQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS389006004RTERQ1 reliable?
The price and inventory of TPS389006004RTERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS389006004RTERQ1 is usually 5 days.
3.What payment methods are accepted for TPS389006004RTERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS389006004RTERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS389006004RTERQ1?
TPS389006004RTERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS389006004RTERQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS389006004RTERQ1?
For technical support, including TPS389006004RTERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS389006004RTERQ1 requirements.
6.How does Aetrix verify that TPS389006004RTERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS389006004RTERQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS389006004RTERQ1 meets industry standards.
7.What is the process for return or replacement of TPS389006004RTERQ1?
All TPS389006004RTERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS389006004RTERQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS389006004RTERQ1 part is unused and in its original packaging.
Return procedure for TPS389006004RTERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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