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Texas Instruments TPS6281206QWRWYRQ1
- Part No.:
- TPS6281206QWRWYRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 9-VFQFN
- Datasheet:
-
TPS6281206QWRWYRQ1.pdf
- Description:
- IC REG BUCK 1V 2A 9VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,815
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Product details
Overview
TPS6281206QWRWYRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering 2 A continuous output current, fixed 1.0 V output voltage, 1.8–4 MHz adjustable switching frequency, and ±1% output voltage accuracy in PWM mode. It operates across 2.75 V to 6 V input, supports forced PWM or PFM operation, and integrates active output discharge and power-good monitoring-designed for infotainment head units and ADAS sensor fusion ECUs.
For engineers reviewing the TPS6281206QWRWYRQ1 datasheet, TPS6281206QWRWYRQ1 pinout, TPS6281206QWRWYRQ1 application, or TPS6281206QWRWYRQ1 equivalent, key selection criteria include its fixed 1.0 V output, wettable-flank VQFN-9 package, AEC-Q100 qualification, functional safety documentation support, and precise enable with user-defined UVLO and sequencing capability.
Technical Context
The TPS6281206QWRWYRQ1 implements peak current mode control with internal compensation selectable via resistor on COMP/FSET, enabling stable regulation with ceramic output capacitors as low as 15 µF. Its MODE/SYNC pin supports external clock synchronization (1.8–4 MHz) or logic-controlled PFM/PWM mode selection.
It features a dedicated SS/TR pin for soft-start timing or voltage tracking, precise EN threshold (1.06–1.15 V rising), and integrated power-good window comparator (±5% VFB thresholds). The device enters 100% duty cycle mode under low-input conditions and provides active output discharge through a 50 Ω internal path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2 A continuous - supports high ambient temperature operation in automotive ECU power rails |
| Output Voltage | Fixed 1.0 V - eliminates external feedback resistors; enables direct core supply for SoCs/FPGAs |
| Input Voltage Range | 2.75 V to 6 V - compatible with 3.3 V, 5 V, and battery-backed automotive systems |
| Switching Frequency | 1.8 MHz to 4 MHz adjustable - allows EMI optimization and compact filter design with 0.33–0.47 µH inductors |
| Quiescent Current | 15 µA typical - extends battery life in always-on vehicle modules |
| Output Accuracy | ±1% in PWM mode - ensures reliable logic-level compliance for 1.0 V I/O or core supplies |
| Thermal Rating | –40°C to +125°C TA (Grade 1) - validated for under-hood and dashboard-mounted applications |
Pinout & Package
The TPS6281206QWRWYRQ1 is housed in a 3.0 mm × 2.0 mm VQFN-9 package with wettable flanks for automated optical inspection (AOI) and enhanced solder joint reliability in automotive reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 8) | Enable input | Logic-controlled startup with 1.06–1.15 V rising threshold; supports RC-based sequencing and programmable UVLO |
| FB (Pin 5) | Feedback input | Internally tied to 1.0 V reference - no external divider required; simplifies layout and improves noise immunity |
| GND (Pin 4) | Power ground | Primary return path for high-current switching loop; requires low-inductance PCB connection to VIN capacitor |
| MODE/SYNC (Pin 1) | Mode control / sync input | Selects PFM/PWM (low) or forced PWM (high); accepts external 1.8–4 MHz clock for synchronized multi-rail systems |
| COMP/FSET (Pin 7) | Compensation & frequency set | Resistor-to-GND sets both switching frequency and internal compensation; tied to GND/VIN for fixed 2.25 MHz |
| PG (Pin 9) | Power-good open-drain output | Signals valid regulation using window comparator (92–98% VFB rising, 87–93% falling); supports system reset coordination |
| SS/TR (Pin 6) | Soft-start / tracking input | Capacitor-to-GND sets ramp time; accepts external voltage for rail sequencing or tracking of master supply |
| SW (Pin 3) | Switch node | Connects to internal high-side/low-side MOSFETs; requires tight layout with minimal trace inductance |
| VIN (Pin 2) | Input supply | Accepts 2.75–6 V; must be decoupled with ≥5 µF ceramic capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive reliability and lifetime requirements |
| Active output discharge | 50 Ω internal path discharges VOUT rapidly after shutdown - prevents floating voltages and enables safe hot-swap |
| Spread spectrum clocking (SSC) | Optional EMI reduction feature - lowers peak radiated emissions without external components |
| Wettable flanks package | VQFN-9 RWY footprint enables AOI-compatible solder joint inspection - critical for zero-defect automotive manufacturing |
| Precision enable with UVLO | 100 mV hysteresis between rising (1.1 V) and falling (1.0 V) thresholds - enables robust power sequencing and brownout protection |
Applications
| Infotainment Head Unit | Hybrid Reconfigurable Cluster |
|---|---|
Use Scenario: Powers application processor cores and DDR memory interfaces in centralized infotainment systems requiring stable 1.0 V at up to 2 A. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering tightly regulated 1.0 V core supply with fast transient response. Use Value: ±1% output accuracy and 15 µA quiescent current ensure consistent SoC performance and extended standby battery life. | Use Scenario: Supplies configurable display controller ASICs in digital instrument clusters where multiple voltage rails must sequence precisely during ignition startup. IC Role / Device Role / Timing Role: Fixed-output buck converter providing 1.0 V rail with SS/TR pin used for voltage tracking to match auxiliary supply ramp rates. Use Value: Integrated soft-start and precise EN threshold enable deterministic power-up sequencing without external timers. |
| Telematics Control Unit | Surround View ECU |
Use Scenario: Delivers clean 1.0 V power to cellular modem baseband processors operating in thermally constrained enclosures near vehicle antennas. IC Role / Device Role / Timing Role: High-efficiency step-down regulator supporting forced PWM mode to maintain constant switching frequency and minimize RF interference. Use Value: 1.8–4 MHz adjustable frequency allows EMI tuning away from LTE/5G bands; wettable flanks ensure solder joint integrity in vibration-prone mounting locations. | Use Scenario: Supplies image signal processors (ISPs) in surround-view camera fusion ECUs where low-noise, ripple-free 1.0 V is essential for analog front-end stability. IC Role / Device Role / Timing Role: Synchronous buck converter with active output discharge and PG monitoring - ensures clean power-down and system-level fault detection. Use Value: Power-good window comparator and ±1% accuracy prevent ISP lockup or corrupted frame capture during voltage transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6281208QWRWYRQ1 | Fixed 1.1 V output; identical 2 A rating, package, and feature set | Suitable for 1.1 V FPGA I/O banks or specific PMIC companion rails | Select when system requires 1.1 V instead of 1.0 V; no layout change needed |
| TPS6281220QWRWYRQ1 | Same 2 A rating and 1.0 V output, but adds spread spectrum clocking (SSC) | Better suited for EMI-sensitive environments like radar proximity zones or antenna-adjacent modules | Choose if radiated emissions compliance is critical and SSC is not disabled in final firmware |
Compared with TPS6281206QWRWYRQ1, the 1.1 V variant offers direct compatibility for higher-voltage logic domains, while the SSC-enabled version trades minor efficiency loss for measurable EMI reduction-both retain identical thermal performance, pinout, and sequencing capability.
Availability
TPS6281206QWRWYRQ1 is available at Aetrix Electronics and suitable for infotainment head units, telematics control units, and surround view ECUs requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for TPS6281206QWRWYRQ1 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 specializing in analog, embedded processing, and automotive-grade power management solutions with over 50 years of innovation in high-reliability electronics.
The TPS6281x-Q1 product line delivers high-efficiency, small-footprint DC/DC converters engineered specifically for automotive infotainment, ADAS, and body electronics applications demanding AEC-Q100 qualification and functional safety readiness.
FAQ
What is the output voltage of the TPS6281206QWRWYRQ1 and is it adjustable?
The TPS6281206QWRWYRQ1 has a fixed 1.0 V output voltage. It does not support adjustable output via external feedback resistors because the FB pin is internally connected to the 1.0 V reference. This eliminates component count and improves noise immunity for dedicated 1.0 V core or I/O supplies. The TPS6281206QWRWYRQ1 is part of the TPS6281x-Q1 family where fixed-output variants are optimized for simplicity and precision in automotive subsystems.
Does the TPS6281206QWRWYRQ1 support external clock synchronization?
Yes, the TPS6281206QWRWYRQ1 supports external clock synchronization via the MODE/SYNC pin (Pin 1), accepting input frequencies from 1.8 MHz to 4 MHz. Synchronization requires a resistor from COMP/FSET to GND; tying COMP/FSET directly to GND or VIN disables this feature. The device locks to the external clock within 50 µs and maintains phase alignment, enabling noise-sensitive multi-rail systems to avoid beat frequencies. This capability is fully retained in the TPS6281206QWRWYRQ1.
What package type and footprint does the TPS6281206QWRWYRQ1 use?
The TPS6281206QWRWYRQ1 uses a 3.0 mm × 2.0 mm VQFN-9 package with wettable flanks (RWY designation). This RoHS-compliant, leadless package features exposed thermal pad and solderable side walls for automated optical inspection (AOI) and improved thermal dissipation. Its pinout matches all TPS6281x-Q1 variants, enabling drop-in replacement across 1 A–4 A versions when output voltage and features align.
How does the TPS6281206QWRWYRQ1 handle power sequencing in automotive systems?
The TPS6281206QWRWYRQ1 supports precise power sequencing via three integrated features: (1) a precise EN pin with 1.06–1.15 V rising threshold for RC-delayed startup, (2) SS/TR pin for soft-start timing or voltage tracking to external rails, and (3) open-drain PG output with window comparator for downstream reset coordination. These functions allow deterministic, glitch-free sequencing in multi-rail automotive ECUs without external supervisors. The TPS6281206QWRWYRQ1 implements all three natively.
Is the TPS6281206QWRWYRQ1 qualified for automotive applications and what grade does it meet?
Yes, the TPS6281206QWRWYRQ1 is AEC-Q100 qualified for automotive applications and meets Grade 1 specifications, covering an ambient operating temperature range of –40°C to +125°C. It includes functional safety documentation support for ISO 26262 ASIL-B system integration. This qualification applies specifically to the TPS6281206QWRWYRQ1 device, not just the family, and is verified per TI's production test flow and reliability stress protocols.
TPS6281206QWRWYRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.75V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 1.8MHz ~ 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 9-VQFN-HR (3x2)
TPS6281206QWRWYRQ1 FAQ
1.How can I place an order for TPS6281206QWRWYRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS6281206QWRWYRQ1 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 TPS6281206QWRWYRQ1 reliable?
The price and inventory of TPS6281206QWRWYRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS6281206QWRWYRQ1 is usually 5 days.
3.What payment methods are accepted for TPS6281206QWRWYRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS6281206QWRWYRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS6281206QWRWYRQ1?
TPS6281206QWRWYRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS6281206QWRWYRQ1 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 TPS6281206QWRWYRQ1?
For technical support, including TPS6281206QWRWYRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS6281206QWRWYRQ1 requirements.
6.How does Aetrix verify that TPS6281206QWRWYRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS6281206QWRWYRQ1 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 TPS6281206QWRWYRQ1 meets industry standards.
7.What is the process for return or replacement of TPS6281206QWRWYRQ1?
All TPS6281206QWRWYRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS6281206QWRWYRQ1, 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 TPS6281206QWRWYRQ1 part is unused and in its original packaging.
Return procedure for TPS6281206QWRWYRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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