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Texas Instruments TPS5430DDARG4
- Part No.:
- TPS5430DDARG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS5430DDARG4.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:4,032
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Product details
Overview
TPS5430DDARG4 from Texas Instruments is a 3A, wide-input (5.5V–36V), synchronous step-down DC/DC converter with integrated 100mΩ high-side N-channel MOSFET, fixed 500kHz switching frequency, and internal compensation. It delivers regulated output down to 1.22V with ±1.5% initial accuracy and supports industrial power rails including 12V and 24V distributed systems.
For engineers reviewing the TPS5430DDARG4 datasheet, TPS5430DDARG4 pinout, TPS5430DDARG4 application, or TPS5430DDARG4 equivalent, key selection criteria include input voltage range compatibility (up to 36V), thermal performance in the HSOIC-8 PowerPAD™ package, ENA-controlled shutdown (15μA), and OVP/thermal/current protection integration.
Technical Context
The TPS5430DDARG4 implements voltage-mode PWM control with input voltage feed-forward to maintain constant power-stage gain and improve line regulation and transient response. Its internal 1.221V bandgap reference is trimmed for ±1.5% accuracy over temperature and drives an error amplifier with 25× gain.
Protection architecture includes cycle-by-cycle overcurrent limiting (4.0–6.0A peak), hiccup-mode fault recovery, overvoltage protection at 112.5% × VREF, undervoltage lockout (5.3V rising threshold, 0.35V hysteresis), and thermal shutdown at 135°C–162°C with 14°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5V to 36V - supports 12V/24V bus systems and wide industrial input variations without external pre-regulation. |
| Output Current | 3A continuous - sufficient for mid-power point-of-load applications such as LCD displays or car audio amplifiers. |
| Switching Frequency | Fixed 500kHz - enables compact filter design with smaller inductors and capacitors while balancing efficiency and EMI. |
| Feedback Reference | 1.221V ±1.5% - sets minimum output voltage; used with external resistor divider to configure precise output levels. |
| High-Side RDS(on) | 100mΩ typical at 12V - contributes to up to 95% peak efficiency and reduces conduction losses in high-current paths. |
| Shutdown Current | 15μA typical - minimizes system standby power in battery-backed or energy-sensitive applications. |
| Operating Junction Temp | –40°C to 125°C - validated for extended industrial and automotive under-hood environments. |
Pinout & Package
The TPS5430DDARG4 is housed in an 8-pin HSOIC (DDA) package with exposed thermal pad (PowerPAD™), optimized for PCB heat dissipation via bottom-side soldering. Thermal resistance RθJC(bot) is 6°C/W, enabling robust 3A operation without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply | Connects 0.01μF ceramic capacitor to PH; supplies gate drive voltage for integrated high-side MOSFET. |
| NC (2,3) | No connect | Internally unconnected; must remain floating - no routing or termination required. |
| VSENSE | Feedback input | Monitors output voltage divider midpoint; regulates output by comparing to 1.221V internal reference. |
| ENA | Enable control | Active-high logic input; ≥1.3V enables operation, ≤0.5V disables switching and reduces current to 15μA. |
| GND | Power ground | Reference for VIN, PH, and internal circuits; must be connected to exposed DAP for thermal and electrical integrity. |
| VIN | Main input supply | Accepts 5.5V–36V; requires local 10μF ceramic bypass within 1mm of pin to minimize noise and ripple. |
| PH | Power switch node | Drives external inductor; connects to BOOT capacitor and high-side MOSFET source - critical for layout EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | 100mΩ RDS(on) eliminates external switch and driver, reducing BOM count and layout complexity. |
| Internal compensation | Type-3 network embedded on-die - removes need for external compensation components and simplifies stability tuning. |
| Voltage feed-forward | Gain = 25 - maintains consistent loop gain across input voltage changes, improving line transient response without redesign. |
| Thermal-enhanced PowerPAD™ | Exposed DAP with RθJC(bot) = 6°C/W - enables 3A continuous operation in SOIC footprint without heatsink or fan. |
| Comprehensive protection suite | OVP, UVLO, hiccup-mode overcurrent, and thermal shutdown - ensures safe operation during fault conditions without external supervision circuitry. |
Applications
| Set-Top Box Power Supply | LCD Display Backlight Driver |
|---|---|
Use Scenario: Converts 12V or 24V rail to stable 5V or 3.3V for digital logic and video processing in consumer STB platforms. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated, low-noise DC power to SoC and memory subsystems. Use Value: Internal 1.221V reference and 500kHz switching enable compact, high-efficiency design meeting EMI limits and thermal constraints in enclosed chassis. | Use Scenario: Supplies adjustable constant-current or constant-voltage output for LED backlight arrays in 10–32-inch LCD panels. IC Role / Device Role / Timing Role: Adjustable-output buck controller regulating LED string voltage with feedback from current-sense resistor network. Use Value: Wide 5.5V–36V input accommodates varying adapter outputs; 3A capability supports multi-string configurations without derating. |
| Industrial 24V Distributed PSU | Car Audio Amplifier Supply |
Use Scenario: Provides isolated or non-isolated 5V/3.3V rails for PLC I/O modules, sensors, and communication interfaces in factory automation systems. IC Role / Device Role / Timing Role: Point-of-load regulator converting 24V field bus to logic-level voltages with high PSRR and fast load-step response. Use Value: –40°C to 125°C junction rating and thermal shutdown ensure reliability in uncontrolled ambient environments. | Use Scenario: Generates clean 12V or 5V supply for Class D audio amplifier stages in automotive infotainment head units. IC Role / Device Role / Timing Role: Main DC/DC converter handling wide automotive input transients (load dump, cold crank) while maintaining stable output. Use Value: 36V absolute max input and UVLO hysteresis (0.35V) tolerate battery voltage spikes and brownouts without dropout or latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54302DDAR | Lower IQ (15μA vs 4.4mA active), same 5.5V–36V input, but 2A output and different pinout (no NC pins). | Suitable for lower-current, ultra-low-quiescent designs where 3A is unnecessary; not pin-compatible. | Select when standby power is critical and full 3A is unused; verify PCB layout change for pin mapping. |
| LM2678SX-5.0/NOPB | 5V fixed output, 5A capability, 63V max input, external compensation, no integrated BOOT diode. | Better for higher-current or higher-input-voltage applications requiring fixed 5V output; requires more external components. | Choose for 5V-only systems needing >3A or >36V tolerance; accept added design effort for external compensation and bootstrap diode. |
Compared with TPS5430DDARG4, TPS54302DDAR trades output current for ultra-low quiescent power and differs in pin assignment, while LM2678SX-5.0/NOPB offers higher current and input voltage at the cost of increased external component count and loss of adjustable output flexibility.
Availability
TPS5430DDARG4 is available at Aetrix Electronics and suitable for set-top box power supplies, LCD display backlights, and industrial 24V distributed power systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS5430DDARG4 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 decades of expertise in high-reliability power conversion ICs.
The TPS543x product line was designed for high-density, thermally constrained DC/DC conversion in consumer, industrial, and automotive applications-emphasizing integration, protection, and ease of use in space-limited layouts.
FAQ
What is the maximum input voltage rating for the TPS5430DDARG4?
The TPS5430DDARG4 has an absolute maximum input voltage rating of 40V, but its recommended operating input voltage range is 5.5V to 36V. Operation above 36V risks exceeding safe operating area limits and may trigger overvoltage stress on internal circuitry. The device's UVLO rising threshold is typically 5.3V, ensuring reliable startup only after input stabilizes within specification.
Does the TPS5430DDARG4 require external compensation components?
No, the TPS5430DDARG4 features fully internal type-3 compensation, eliminating the need for external resistors or capacitors in the feedback loop. This simplifies design, reduces board area, and improves consistency across production units. The internal network is optimized for stability with standard output filter configurations at 500kHz switching frequency.
How does the ENA pin function on the TPS5430DDARG4?
The ENA pin on the TPS5430DDARG4 is an active-high enable input with a 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 mode drawing only 15μA. An internal 1.5MΩ pullup allows floating ENA for default-enable operation without external bias.
What thermal considerations apply to the TPS5430DDARG4 in the DDA package?
The TPS5430DDARG4 in the HSOIC-8 PowerPAD™ (DDA) package achieves RθJC(bot) = 6°C/W when the exposed DAP is soldered to a large copper pour. For 3A continuous operation at 125°C ambient, thermal design must ensure junction temperature stays below 125°C - typically requiring ≥2 in² of 2-oz copper connected to the DAP and minimal trace resistance between GND and DAP.
Can the TPS5430DDARG4 be used to generate output voltages below 1.22V?
No, the TPS5430DDARG4 cannot regulate below its internal 1.221V feedback reference voltage. The minimum configurable output is 1.22V (set by connecting VSENSE directly to VOUT). Lower outputs require external reference injection or a different regulator - for example, using a resistor divider with a precision external reference is not supported due to internal error amplifier topology and lack of remote sensing capability.
TPS5430DDARG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
TPS5430DDARG4 FAQ
1.How can I place an order for TPS5430DDARG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS5430DDARG4 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 TPS5430DDARG4 reliable?
The price and inventory of TPS5430DDARG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS5430DDARG4 is usually 5 days.
3.What payment methods are accepted for TPS5430DDARG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS5430DDARG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS5430DDARG4?
TPS5430DDARG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS5430DDARG4 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 TPS5430DDARG4?
For technical support, including TPS5430DDARG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS5430DDARG4 requirements.
6.How does Aetrix verify that TPS5430DDARG4 is sourced from the original manufacturer or authorized distributors?
All TPS5430DDARG4 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 TPS5430DDARG4 meets industry standards.
7.What is the process for return or replacement of TPS5430DDARG4?
All TPS5430DDARG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS5430DDARG4, 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 TPS5430DDARG4 part is unused and in its original packaging.
Return procedure for TPS5430DDARG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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