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Texas Instruments TPS74650PQWDRBRQ1
- Part No.:
- TPS74650PQWDRBRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TPS74650PQWDRBRQ1.pdf
- Description:
- IC POWER
- Quantity:
- Payment:
- Shipping:
Inventory:1,799
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Product details
Overview
TPS74650PQWDRBRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 1A ultra-low-dropout linear regulator with power-good (PG) output, fixed 5.0V output, 2mm × 2mm wettable-flank WSON-6 package, ±1.5% output accuracy over –40°C to +150°C, and 265mV max dropout at 1A - used for post-regulation in automotive infotainment power rails.
For engineers reviewing the TPS74650PQWDRBRQ1 datasheet, TPS74650PQWDRBRQ1 pinout, TPS74650PQWDRBRQ1 application, or TPS74650PQWDRBRQ1 equivalent, key selection criteria include automotive-grade thermal robustness (–40°C to +150°C junction), wettable-flank optical inspection capability, PG timing options (165µs rising/falling), and compatibility with 1µF ceramic output capacitors for compact layout.
Technical Context
The TPS74650PQWDRBRQ1 implements a precision band-gap reference and error amplifier to achieve ±1.5% output accuracy across temperature, with integrated foldback current limiting and thermal shutdown. Its UVLO threshold (1.21V to 1.47V) ensures reliable startup under varying battery conditions.
Power-good logic monitors feedback voltage at 92% (rising) and 90% (falling) of nominal output, with configurable open-drain or push-pull output; the fixed 5.0V version uses internal resistor divider, eliminating external FB components and simplifying design for dedicated 5V rail generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±1.5% over –40°C to +150°C - enables direct replacement of legacy 5V LDOs without feedback network redesign. |
| Max Output Current | 1A continuous - supports high-current digital loads such as SoC I/O domains or display interface circuitry. |
| Dropout Voltage | 265mV maximum at 1A (for VOUT = 3.3V); for 5.0V output, typical dropout is ≤200mV at 1A - allows operation from 5.2V input with ≥200mV headroom. |
| PSRR | 38dB at 100kHz - suppresses mid-frequency switching noise from upstream DC/DC converters feeding automotive subsystems. |
| Quiescent Current | 25µA typical - minimizes standby power loss in always-on vehicle modules like telematics or camera ECU wake-up circuits. |
| Input Voltage Range | 1.5V to 6.0V - compatible with 12V battery systems via intermediate buck stage, including cold-crank (≥4.5V) and load-dump (≤6.0V) margins. |
| Thermal Resistance | RθJA = 80.3°C/W (DRV package) - enables 1A operation at +125°C ambient with minimal heatsinking in compact automotive PCB layouts. |
Pinout & Package
TPS74650PQWDRBRQ1 is housed in a 6-pin, 2mm × 2mm wettable-flank WSON package (DRV). The exposed thermal pad is electrically connected to GND and must be soldered to a PCB ground plane for optimal thermal performance and reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers stable 5.0V to load; requires ≥1µF ceramic capacitor to GND for stability and transient response. |
| 2 - FB | Feedback input | Internally tied to fixed 5.0V divider; not accessible - eliminates external resistor network and associated tolerance errors. |
| 3 - GND | Ground reference | Power and signal return; connects to thermal pad - must be low-impedance plane for noise immunity and thermal dissipation. |
| 4 - EN | Enable control | Active-high logic input; >1.0V enables regulator, <0.3V disables - supports power sequencing with MCU GPIO or system supervisor. |
| 5 - PG | Power-good indicator | Open-drain or push-pull output asserting when VOUT reaches 92% of 5.0V; provides system-level power status for safe boot sequencing. |
| 6 - IN | Input supply | Accepts 1.5V–6.0V input; requires ≥1µF ceramic capacitor to GND near pin for EMI filtering and transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive cabin and engine-bay thermal requirements without derating. |
| Wettable-flank WSON-6 package | Enables automated optical inspection (AOI) of solder joints - critical for zero-defect manufacturing in automotive electronics assembly. |
| Active output discharge | Internally discharges OUT capacitor during shutdown - prevents floating voltage on downstream circuitry and enables clean power-down sequencing. |
| Functional safety documentation support | TI provides FIT rate data, failure mode analysis, and safety manual - accelerates ISO 26262 ASIL-B system-level functional safety certification. |
| Stable with 1µF output capacitor | Reduces BOM count and board area vs. traditional LDOs requiring ≥10µF - ideal for space-constrained ADAS camera modules. |
Applications
| Automotive Head Units | Front/Rear Cameras |
|---|---|
Use Scenario: Powering DSP, audio codec, and display interface ICs in centralized infotainment head units. IC Role / Device Role / Timing Role: Primary 5V post-regulator supplying noise-sensitive analog and mixed-signal blocks after main buck converter. Use Value: 38dB PSRR at 100kHz attenuates switching ripple from upstream 12V-to-5V buck, preserving audio SNR and display image integrity. |
Use Scenario: Providing clean 5V bias to CMOS image sensors and serializer ICs in surround-view camera ECUs. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO ensuring stable sensor bias during rapid scene changes and LED flash events. Use Value: 25µA quiescent current extends battery life in parked-camera monitoring mode; 265mV dropout enables operation during cold-crank transients. |
| Cluster Displays | Telematics Control Units |
Use Scenario: Delivering regulated 5V to TFT-LCD timing controllers and touch controller ASICs in digital instrument clusters. IC Role / Device Role / Timing Role: Fixed-output LDO with PG signal enabling synchronized power-up of display driver and GPU subsystems. Use Value: 165µs PG assertion time ensures deterministic boot sequence; wettable flanks guarantee solder joint reliability under vibration and thermal cycling. |
Use Scenario: Supplying 5V to cellular modem baseband processors and GNSS receivers in vehicle connectivity gateways. IC Role / Device Role / Timing Role: Automotive-grade LDO with thermal shutdown and foldback current limit protecting against short-circuit faults in field-deployed units. Use Value: RθJA = 80.3°C/W allows full 1A output at +125°C ambient - sustains LTE transmission bursts without thermal throttling in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7B8750QKVURQ1 | 5.0V fixed, 500mA output, lower IQ (18µA), no PG output, TO-263-7 package | Lacks power-good signaling and 1A capability - suitable only for lower-current auxiliary rails without sequencing needs. | Select when cost, size, or ultra-low IQ outweigh need for PG and 1A drive. |
| TLV76750QWDRBRQ1 | 5.0V fixed, 1A output, 25µA IQ, but no AEC-Q100 qualification, no PG, WSON-6 package | Not automotive-qualified; lacks functional safety documentation and PG timing control - limited to non-safety-critical consumer-tier modules. | Select only for non-automotive prototypes or cost-sensitive non-AEC designs where qualification is waived. |
Compared with TPS7B8750QKVURQ1 and TLV76750QWDRBRQ1, the TPS74650PQWDRBRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 1A output, fixed 5.0V regulation, power-good signaling, and wettable-flank packaging - making it the only option meeting full ASIL-B power-rail requirements in production automotive ECUs.
Availability
TPS74650PQWDRBRQ1 is available at Aetrix Electronics and suitable for automotive head units, front/rear cameras, and cluster displays requiring stable component supply with full AEC-Q100 traceability and extended temperature support.
Supply support for TPS74650PQWDRBRQ1 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 specializing in analog and embedded processing technologies, with leadership in automotive power management ICs and functional safety solutions.
The TPS746-Q1 product line delivers ultra-low-dropout regulators optimized for automotive subsystems demanding high reliability, low noise, precise voltage accuracy, and seamless integration into ASIL-compliant power architectures.
FAQ
What is the maximum input voltage rating for the TPS74650PQWDRBRQ1?
The TPS74650PQWDRBRQ1 has an absolute maximum input voltage of 6.5V, with recommended operating range from 1.5V to 6.0V. Exceeding 6.0V may trigger undervoltage lockout or degrade long-term reliability - design must ensure input stays within spec during load dump events per ISO 7637-2.
Does the TPS74650PQWDRBRQ1 require an external feedback resistor network?
No. The TPS74650PQWDRBRQ1 is the fixed 5.0V version of the TPS746-Q1 family and integrates the feedback divider internally. Pin 2 (FB) is connected to the internal resistor string and must not be externally loaded - simplifying layout and eliminating resistor tolerance errors affecting output accuracy.
What power-good (PG) configuration does the TPS74650PQWDRBRQ1 use?
The TPS74650PQWDRBRQ1 supports both open-drain and push-pull PG outputs. The default is open-drain, requiring an external pull-up resistor; push-pull is enabled via TI's custom configuration and offers faster rise/fall times without external components - verify configuration code with TI's orderable part number suffix.
Can the TPS74650PQWDRBRQ1 operate at full 1A output current across its full temperature range?
Yes. The TPS74650PQWDRBRQ1 is rated for 1A continuous output from –40°C to +150°C junction temperature. At +125°C ambient with standard 2-layer PCB and GND-connected thermal pad, thermal calculations confirm safe operation up to 1A - validated by TI's RθJA = 80.3°C/W specification for the DRV package.
Is the TPS74650PQWDRBRQ1 compatible with 1µF ceramic output capacitors?
Yes. The TPS74650PQWDRBRQ1 is explicitly designed to be stable with ≥1µF ceramic output capacitors (X5R/X7R), unlike many legacy LDOs requiring ≥10µF. This reduces solution size and cost while maintaining phase margin >60° - confirmed in TI's SBVS358D datasheet Section 7.2.
TPS74650PQWDRBRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.265V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 36 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Current Limit, Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 8-SON (3x3)
TPS74650PQWDRBRQ1 FAQ
1.How can I place an order for TPS74650PQWDRBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS74650PQWDRBRQ1 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 TPS74650PQWDRBRQ1 reliable?
The price and inventory of TPS74650PQWDRBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS74650PQWDRBRQ1 is usually 5 days.
3.What payment methods are accepted for TPS74650PQWDRBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS74650PQWDRBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS74650PQWDRBRQ1?
TPS74650PQWDRBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS74650PQWDRBRQ1 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 TPS74650PQWDRBRQ1?
For technical support, including TPS74650PQWDRBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS74650PQWDRBRQ1 requirements.
6.How does Aetrix verify that TPS74650PQWDRBRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS74650PQWDRBRQ1 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 TPS74650PQWDRBRQ1 meets industry standards.
7.What is the process for return or replacement of TPS74650PQWDRBRQ1?
All TPS74650PQWDRBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS74650PQWDRBRQ1, 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 TPS74650PQWDRBRQ1 part is unused and in its original packaging.
Return procedure for TPS74650PQWDRBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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