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Texas Instruments TPS5430QDDARQ1
- Part No.:
- TPS5430QDDARQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS5430QDDARQ1.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:4,083
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Product details
Overview
TPS5430QDDARQ1 from Texas Instruments is an automotive-grade, 3A synchronous step-down DC/DC converter with integrated 100mΩ high-side N-channel MOSFET, 5.5V–36V input range, 1.22V adjustable output (±1.5% initial accuracy), fixed 500kHz switching frequency, and internal compensation - designed for car audio power supplies and 12V/24V automotive systems.
For engineers reviewing the TPS5430QDDARQ1 datasheet, TPS5430QDDARQ1 pinout, TPS5430QDDARQ1 application, or TPS5430QDDARQ1 equivalent, key selection criteria include AEC-Q100 qualification, thermal performance in SOIC PowerPAD™ package, ENA-controlled shutdown (15μA), voltage feed-forward transient response, and hiccup-mode overcurrent protection.
Technical Context
The TPS5430QDDARQ1 implements constant-frequency voltage-mode PWM control with integrated voltage feed-forward to maintain stable loop gain across input voltage variations - enabling consistent line regulation and fast transient recovery. Its internal 1.221V bandgap reference is trimmed to ±1.5% initial accuracy and drifts only ±25mV over –40°C to 125°C junction temperature.
Functional safety features include cycle-by-cycle overcurrent limiting (4.0–7.0A peak), overvoltage protection at 112.5% × VREF, thermal shutdown at 135°C–162°C with 14°C hysteresis, and undervoltage lockout with 5.3V rising threshold and 350mV hysteresis - all implemented without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5V to 36V - supports direct connection to 12V and 24V automotive batteries including cold-crank transients. |
| Output Current | 3A continuous / 4A peak - enables single-chip power delivery for mid-power automotive subsystems. |
| Switching Frequency | Fixed 500kHz - allows compact LC filter design with reduced inductor size and predictable EMI profile. |
| Feedback Reference | 1.221V ±1.5% initial accuracy - sets minimum output voltage and defines resistor-divider ratio for precise output programming. |
| High-Side RDS(on) | 100mΩ typical at 12V VIN - contributes to up to 95% efficiency and reduces thermal load in SOIC PowerPAD™ package. |
| Shutdown Current | 15μA typical - enables ultra-low quiescent power during vehicle sleep mode without external enable circuitry. |
| Junction Temperature | –40°C to 125°C - qualified per AEC-Q100 Grade 1 for under-hood and infotainment applications. |
Pinout & Package
TPS5430QDDARQ1 is housed in an 8-pin SOIC PowerPAD™ (DDA) package measuring 4.9mm × 3.9mm with exposed thermal pad (DAP) soldered to PCB ground plane for enhanced thermal dissipation (RθJC(bot) = 6°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap capacitor node | Connects 0.01μF X7R/X5R ceramic capacitor to PH; supplies gate drive voltage for integrated high-side MOSFET. |
| NC (pins 2,3) | No connect | Not internally bonded; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| VSENSE | Feedback input | Monitors output voltage divider midpoint; regulates output by comparing to 1.221V internal reference. |
| ENA | Enable control input | Active-high logic: >1.3V enables operation; <0.5V disables switching and reduces IQ to 15μA; internal 1.5MΩ pullup allows floating use. |
| GND | Power and signal ground | Reference for all internal circuits; must be connected to DAP (exposed thermal pad) for proper thermal and electrical performance. |
| VIN | Main input supply | Accepts 5.5V–36V; requires local 10μF ceramic bypass capacitor placed within 1mm of pin and GND. |
| PH | Power switch node | Drain of integrated high-side MOSFET; connects to external inductor and catch diode; carries high di/dt switching current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | 100mΩ RDS(on) enables 3A continuous output without external power switches or gate drivers. |
| Internal compensation | Eliminates need for external Type-III compensation network - reduces BOM count and layout sensitivity. |
| Voltage feed-forward control | Maintains constant power-stage gain across input voltage range - improves line regulation and transient response without tuning. |
| Thermal-enhanced PowerPAD™ | Exposed DAP soldered to PCB ground delivers 6°C/W junction-to-case (bottom) thermal resistance for reliable 3A operation. |
| Hiccup-mode overcurrent protection | Enters timed shutdown (13–21ms) during sustained overload - prevents thermal runaway while allowing automatic recovery. |
Applications
| Car Audio Power Supply | High-Power LED Driver |
|---|---|
Use Scenario: Powering Class D amplifiers and DSP modules in automotive head units and rear-seat entertainment systems. IC Role / Device Role / Timing Role: Primary 12V-to-5V/3.3V buck regulator delivering stable, low-noise rail with fast transient response to dynamic audio loads. Use Value: Internal feed-forward and 500kHz switching minimize output voltage droop during bass transients, preserving audio fidelity. | Use Scenario: Driving high-brightness LED arrays in adaptive headlights, DRLs, and interior ambient lighting. IC Role / Device Role / Timing Role: Constant-voltage source regulating LED string supply; configured with external current-sense resistor for CC/CV hybrid operation. Use Value: 36V max input accommodates 24V battery systems with load-dump transients; thermal shutdown protects against LED thermal runaway. |
| Battery Charger Interface | 12V/24V Industrial Control Module |
Use Scenario: Providing regulated auxiliary power to charging ICs and fuel-gauge monitors in 12V lead-acid or LiFePO₄ battery management systems. IC Role / Device Role / Timing Role: Pre-regulator stepping down raw battery voltage to stable 5V/3.3V for charger controller logic and communication interfaces. Use Value: UVLO with 5.3V start threshold ensures clean startup after battery recovery; ENA pin enables synchronized power sequencing with charger state machine. | Use Scenario: Powering microcontrollers, CAN transceivers, and sensor signal chains in engine control units and body electronics modules. IC Role / Device Role / Timing Role: Main system power supply converting vehicle battery voltage to isolated logic rails with AEC-Q100 reliability assurance. Use Value: AEC-Q100 Grade 1 qualification and –40°C to 125°C operation ensure functional integrity in harsh under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5143AQDGQRQ1 | 42V input, 3.5A, dual-channel, current-mode control, higher BOM cost | Supports multi-rail designs and tighter current matching; requires external compensation | Choose when dual-output capability or higher input voltage margin is required. |
| TPS5450DDAR | Non-automotive grade, same pinout, 5A output, no AEC-Q100 qualification | Lacks automotive qualification and extended temperature support; lower cost for non-automotive industrial use | Choose for cost-sensitive non-automotive applications where AEC-Q100 is not mandated. |
Compared with LM5143AQDGQRQ1 and TPS5450DDAR, the TPS5430QDDARQ1 offers optimal balance of AEC-Q100 compliance, thermal performance in SOIC PowerPAD™, and minimal external component count - making it ideal for single-rail automotive subsystems where footprint and qualification are critical.
Availability
TPS5430QDDARQ1 is available at Aetrix Electronics and suitable for car audio power supplies, high-power LED drivers, and 12V/24V automotive control modules requiring stable component supply across long production lifecycles.
Supply support for TPS5430QDDARQ1 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 power management technologies with broad automotive qualification expertise.
The TPS5430-Q1 product line delivers AEC-Q100-qualified, thermally robust buck converters for automotive power conversion - targeting infotainment, lighting, and body electronics where reliability and space-constrained design are essential.
FAQ
What is the maximum input voltage rating for the TPS5430QDDARQ1?
The TPS5430QDDARQ1 has an absolute maximum input voltage rating of 40V, but its recommended operating input voltage range is 5.5V to 36V. Operation above 36V may trigger overvoltage protection or reduce reliability. The device's UVLO starts at 5.3V typical and includes 350mV hysteresis to prevent oscillation near threshold. For automotive applications, this range covers nominal 12V and 24V systems including load-dump transients.
Does the TPS5430QDDARQ1 require external compensation components?
No, the TPS5430QDDARQ1 features fully internal Type-III compensation optimized for voltage-mode control - eliminating external capacitors and resistors typically needed for loop stability. This simplifies PCB layout, reduces BOM count, and improves consistency across production units. The internal compensation is calibrated to deliver high phase margin and crossover frequency when used with standard output filter components specified in the datasheet.
How does the ENA pin function on the TPS5430QDDARQ1?
The ENA pin on the TPS5430QDDARQ1 is an active-high enable input with 1.3V rising threshold and 0.5V falling threshold. When pulled above 1.3V, the device initiates soft-start and begins regulation; below 0.5V, it enters shutdown with 15μA typical supply current. An internal 1.5MΩ pullup resistor allows direct floating connection for always-on operation. Do not tie ENA to ground via a resistor, as this risks exceeding input current limits.
What thermal performance can be expected from the TPS5430QDDARQ1 in its SOIC PowerPAD™ package?
The TPS5430QDDARQ1 in the DDA (SOIC PowerPAD™) package achieves a junction-to-board thermal resistance (RθJB) of 15°C/W and junction-to-case (bottom) resistance (RθJC(bot)) of 6°C/W when the exposed DAP is properly soldered to a minimum 1-in² copper pour on the PCB. This enables full 3A continuous output at 125°C ambient with appropriate airflow or board-level heatsinking - verified per JEDEC JESD51-7 thermal test standards.
Is the TPS5430QDDARQ1 pin-compatible with any non-automotive variants?
Yes, the TPS5430QDDARQ1 shares identical pinout, package dimensions, and electrical interface with the commercial-grade TPS5430DDAR (non-Q1). However, the Q1 variant adds AEC-Q100 qualification, extended temperature screening (–40°C to 125°C), and enhanced process controls - meaning hardware designs can reuse the same PCB layout, but automotive applications must specify the Q1 suffix for compliance and warranty coverage.
TPS5430QDDARQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 5.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1.221V
- Voltage - Output (Max):
- 32.04V
- Current - Output:
- 3A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
TPS5430QDDARQ1 FAQ
1.How can I place an order for TPS5430QDDARQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS5430QDDARQ1 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 TPS5430QDDARQ1 reliable?
The price and inventory of TPS5430QDDARQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS5430QDDARQ1 is usually 5 days.
3.What payment methods are accepted for TPS5430QDDARQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS5430QDDARQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS5430QDDARQ1?
TPS5430QDDARQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS5430QDDARQ1 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 TPS5430QDDARQ1?
For technical support, including TPS5430QDDARQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS5430QDDARQ1 requirements.
6.How does Aetrix verify that TPS5430QDDARQ1 is sourced from the original manufacturer or authorized distributors?
All TPS5430QDDARQ1 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 TPS5430QDDARQ1 meets industry standards.
7.What is the process for return or replacement of TPS5430QDDARQ1?
All TPS5430QDDARQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS5430QDDARQ1, 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 TPS5430QDDARQ1 part is unused and in its original packaging.
Return procedure for TPS5430QDDARQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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