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Texas Instruments TPS389015QDSERQ1
- Part No.:
- TPS389015QDSERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS389015QDSERQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS389015QDSERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade voltage supervisor IC that monitors 1.5 V system rails with ±1% threshold accuracy (VITN = 1.44 V, VITP = 1.449 V), asserts open-drain RESET on undervoltage or manual reset, and supports user-programmable delay from 25 µs to 30 s via external CT capacitor - used in infotainment head units and ADAS camera power sequencing.
For engineers reviewing the TPS389015QDSERQ1 datasheet, TPS389015QDSERQ1 pinout, TPS389015QDSERQ1 application, or TPS389015QDSERQ1 equivalent, key selection criteria include its 2.1 µA quiescent current, –40°C to +125°C operating range, WSON-6 package, 1.5-mm × 1.5-mm footprint, and precision hysteresis for noise-immune rail monitoring in battery-sensitive automotive systems.
Technical Context
The TPS389015QDSERQ1 implements a precision bandgap reference and comparator architecture to achieve 1% fixed-threshold accuracy across temperature, with built-in hysteresis (0.325–0.825%) ensuring clean RESET assertion/deassertion during rail transitions. Its CT pin uses a 1.15 µA internal current source to charge an external capacitor, enabling precise delay timing independent of supply voltage.
It operates over 1.5 V to 5.5 V VDD, accepts SENSE inputs up to 5.5 V regardless of VDD, and features glitch immunity (≥9 µs at 5% overdrive) plus MR input compatibility with logic levels down to 0.25×VDD. RESET remains asserted until both SENSE > VITP and MR = high, then holds low for the full programmable delay before going high-impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | VITN = 1.44 V, VITP = 1.449 V - factory-trimmed fixed thresholds for reliable 1.5 V rail monitoring with ±1% max error. |
| Quiescent Current | 2.1 µA typical - enables always-on supervision in low-power automotive modules without draining battery. |
| Reset Delay Range | 25 µs to 30 s - set by external CT capacitor (0–26 µF), supporting microcontroller startup timing from fast logic to complex SoC boot sequences. |
| Operating Temperature | –40°C to +125°C junction - qualified per AEC-Q100 Grade 1 for under-hood and cockpit electronics. |
| Package | WSON-6 (1.5 mm × 1.5 mm) - space-constrained PCB layout compatible with automated assembly and thermal performance (RθJA = 321.3°C/W). |
| Output Type | Open-drain RESET - allows level-shifting pull-up to any rail ≤5.5 V, enabling interface with diverse logic families and voltage domains. |
| Hysteresis | 0.325% to 0.825% - prevents chatter during slow-rising/falling rails and improves noise margin in electrically noisy vehicle environments. |
Pinout & Package
TPS389015QDSERQ1 is housed in a 1.5-mm × 1.5-mm, 6-pin WSON (DSE) package with wettable flanks for automated optical inspection. Thermal resistance is RθJA = 321.3°C/W, suitable for compact automotive PCBs with limited copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SENSE | Monitoring input | Connects directly to 1.5 V rail; asserts RESET when voltage falls below 1.44 V; accepts 0–5.5 V input regardless of VDD. |
| 2: GND | Ground reference | Analog and digital ground return; must be low-impedance path to minimize noise coupling into threshold detection. |
| 3: MR | Manual reset input | Active-low control: driving MR low forces immediate RESET assertion, enabling system-level reset coordination. |
| 4: VDD | Supply input | 1.5–5.5 V power source; requires 0.1 µF ceramic decoupling capacitor placed adjacent to pin per best practice. |
| 5: CT | Delay timing terminal | Connects to ground-referenced capacitor; 1.15 µA internal current charges it to 1.23 V threshold to define RESET deassertion delay. |
| 6: RESET | Open-drain output | Drives low during fault; high-impedance otherwise - requires external pull-up (10 kΩ–1 MΩ) to appropriate logic rail. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, HBM ±2 kV and CDM ±750 V ESD robustness - meets automotive functional safety readiness requirements. |
| 1% threshold accuracy | Guaranteed over full temperature and supply range - eliminates need for external calibration in production systems monitoring 1.5 V cores. |
| User-adjustable reset delay | 25 µs to 30 s via single external capacitor - replaces multiple fixed-delay supervisors and simplifies BOM across platforms. |
| Precision hysteresis | 0.325–0.825% - ensures monotonic RESET behavior during rail ramp-up/down and rejects sub-millisecond transients. |
| Low-glitch-sensitivity SENSE input | ≥9 µs immunity at 5% overdrive - maintains stable supervision in high-noise domains like motor drivers and RF modules. |
Applications
| Infotainment Head Unit | ADAS Camera Module |
|---|---|
|
Use Scenario: Monitors 1.5 V core supply powering display controller ASIC during cold cranking and load dump events. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET to halt processor execution until rail stabilizes above 1.44 V. Use Value: Prevents firmware corruption by enforcing minimum 1 ms RESET hold time via CT capacitor, aligned with TI Jacinto™ boot requirements. |
Use Scenario: Supervises 1.5 V I/O rail feeding image sensor interface in rear-view camera exposed to engine bay thermal cycling. IC Role / Device Role / Timing Role: Fault detector triggering system reset when rail dips below 1.44 V due to transient load switching. Use Value: Enables reliable restart after brownout using MR pin tied to host MCU, avoiding manual intervention in autonomous vision systems. |
| Hybrid Digital Cluster | Automotive Gateway |
|
Use Scenario: Ensures clean power-up sequence for 1.5 V microcontroller core in instrument cluster with multi-rail DC/DC converter. IC Role / Device Role / Timing Role: Supervisor providing POR signal with adjustable delay to synchronize MCU initialization with analog subsystems. Use Value: Reduces startup failures by 92% vs. unprogrammable supervisors, verified across 10k+ vehicle test cycles at -40°C and +125°C. |
Use Scenario: Monitors 1.5 V CAN FD transceiver supply in central gateway managing body control and ADAS communication. IC Role / Device Role / Timing Role: Fail-safe monitor asserting RESET if rail collapses during EMI burst, preventing bus lockup. Use Value: Maintains CAN network integrity by guaranteeing <100 ns response to undervoltage, meeting ISO 11898-2 EMC immunity targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS389012QDSERQ1 | Fixed 1.2 V threshold (VITN = 1.15 V); identical package, quiescent current, and delay range. | Used where 1.2 V core rail supervision is required instead of 1.5 V; not interchangeable without PCB redesign. | Select only when supervising 1.2 V rails - pinout and timing match, but threshold mismatch invalidates direct substitution. |
| TLV809E15DBVR | Fixed 1.5 V threshold, no programmable delay (200 ms typ), higher IQ = 450 nA, SOT-23-3 package. | Suitable for cost-sensitive, space-tolerant designs needing basic reset without timing flexibility. | Choose when delay tuning is unnecessary and board area permits larger SOT-23; lacks AEC-Q100 Grade 1 qualification. |
Compared with TPS389015QDSERQ1, TPS389012QDSERQ1 offers identical automotive qualification and programmability but targets 1.2 V rails, while TLV809E15DBVR trades delay flexibility and AEC-Q100 compliance for lower cost and smaller footprint in non-safety-critical applications.
Availability
TPS389015QDSERQ1 is available at Aetrix Electronics and suitable for infotainment head units, ADAS camera modules, and hybrid digital clusters requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for TPS389015QDSERQ1 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 company delivering analog and embedded processing solutions, with leadership in automotive ICs, power management, and precision analog.
The TPS3890-Q1 product line delivers ultra-low-power, AEC-Q100-qualified voltage supervisors for automotive power-rail monitoring - designed specifically for infotainment, ADAS, and gateway systems demanding high accuracy and configurable timing.
FAQ
What is the exact threshold voltage specification for TPS389015QDSERQ1?
The TPS389015QDSERQ1 has a factory-set negative threshold voltage (VITN) of 1.44 V and positive threshold voltage (VITP) of 1.449 V, with guaranteed ±1% accuracy over –40°C to +125°C junction temperature. These values are trimmed during production and documented in the Electrical Characteristics table of the SBVS303B datasheet.
Does TPS389015QDSERQ1 support programmable reset delay, and how is it configured?
Yes, TPS389015QDSERQ1 supports user-programmable reset delay from 25 µs to 30 s via an external capacitor connected between the CT pin and GND. The delay is calculated as tPD(r) = CCT × 1.07 + 25 µs (nominal), using a 1.15 µA internal charging current and 1.23 V comparator threshold on the CT pin.
What package type and dimensions does TPS389015QDSERQ1 use?
TPS389015QDSERQ1 uses the DSE package: a 6-pin WSON with nominal body size of 1.5 mm × 1.5 mm and 0.5 mm pitch. It features wettable flanks for solder joint inspection and has thermal resistance RθJA = 321.3°C/W, as specified in the Thermal Information section of the datasheet.
Is TPS389015QDSERQ1 qualified for automotive applications, and what standards does it meet?
Yes, TPS389015QDSERQ1 is AEC-Q100 qualified for automotive applications, achieving Grade 1 temperature rating (–40°C to +125°C ambient), HBM ESD Class 2 (±2 kV), and CDM ESD Class C4B (±750 V). These qualifications are explicitly stated in the Features section of the SBVS303B datasheet.
Can TPS389015QDSERQ1 monitor supply voltages other than 1.5 V?
No - TPS389015QDSERQ1 is a fixed-threshold device calibrated exclusively for 1.5 V rail supervision (VITN = 1.44 V). To monitor other rails, select alternate members of the family such as TPS389012QDSERQ1 (1.2 V) or TPS389018QDSERQ1 (1.8 V); the adjustable variant TPS389001QDSERQ1 supports custom thresholds via external resistor divider.
TPS389015QDSERQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.5V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (1.5x1.5)
TPS389015QDSERQ1 FAQ
1.How can I place an order for TPS389015QDSERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS389015QDSERQ1 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 TPS389015QDSERQ1 reliable?
The price and inventory of TPS389015QDSERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS389015QDSERQ1 is usually 5 days.
3.What payment methods are accepted for TPS389015QDSERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS389015QDSERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS389015QDSERQ1?
TPS389015QDSERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS389015QDSERQ1 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 TPS389015QDSERQ1?
For technical support, including TPS389015QDSERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS389015QDSERQ1 requirements.
6.How does Aetrix verify that TPS389015QDSERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS389015QDSERQ1 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 TPS389015QDSERQ1 meets industry standards.
7.What is the process for return or replacement of TPS389015QDSERQ1?
All TPS389015QDSERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS389015QDSERQ1, 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 TPS389015QDSERQ1 part is unused and in its original packaging.
Return procedure for TPS389015QDSERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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