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Texas Instruments TPS5410DG4
- Part No.:
- TPS5410DG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS5410DG4.pdf
- Description:
- IC REG BUCK ADJ 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,021
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Product details
Overview
TPS5410DG4 from Texas Instruments is a 1-A, wide-input (5.5V–36V), internally compensated step-down DC/DC converter with integrated 110mΩ high-side N-channel MOSFET, fixed 500kHz switching frequency, and adjustable output down to 1.22V - used in 12V/24V distributed power systems for LCD displays and car audio.
For engineers reviewing the TPS5410DG4 datasheet, TPS5410DG4 pinout, TPS5410DG4 application, or TPS5410DG4 equivalent, key selection criteria include input voltage range, peak current limit (1.2A), thermal shutdown threshold (135°C), internal slow-start time (8ms), and SOIC-8 package compatibility with board-level layout constraints.
Technical Context
The TPS5410DG4 implements voltage-mode PWM control with input voltage feed-forward to maintain constant power-stage gain across input variations, improving line regulation and transient response. Its internal compensation network eliminates external compensation components while supporting stable operation with 10–100μH inductors and standard ceramic/tantalum output capacitors.
It integrates undervoltage lockout (5.3V rising threshold, 330mV hysteresis), cycle-by-cycle overcurrent protection (1.2–1.9A trip), overvoltage protection (112.5% × VREF), and thermal shutdown (135°C trip, 14°C hysteresis), enabling robust operation in industrial and automotive environments without external fault management circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5V to 36V - supports direct connection to 12V/24V rails and battery-backed systems without pre-regulation. |
| Output Current | 1A continuous, 1.2A peak - sufficient for powering FPGA I/O banks, display bias supplies, or LED drivers. |
| Switching Frequency | Fixed 500kHz - enables compact filter design using ≤100μH inductors and low-ESR ceramic capacitors. |
| Feedback Reference | 1.221V ±1.5% - sets minimum output voltage; accuracy ensures tight regulation across –40°C to 125°C junction range. |
| High-Side RDS(on) | 100–230mΩ - determines conduction loss and thermal rise at full load; impacts efficiency up to 95% at mid-load. |
| Thermal Shutdown | 135°C trip, 14°C hysteresis - protects against sustained overload or poor heatsinking in enclosed enclosures. |
| Enable Threshold | 1.3V rising, 0.5V falling - allows clean ON/OFF control via microcontroller GPIO or open-drain logic without pull-up resistors. |
Pinout & Package
TPS5410DG4 is housed in an 8-pin SOIC package (4.9mm × 6mm), optimized for thermal performance on standard PCBs with exposed copper pour under the GND pad. The D-package pinout supports straightforward layout of buck converter topology with minimal trace inductance on VIN, PH, and BOOT paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap capacitor node | Connects 0.01μF X7R/X5R ceramic between BOOT and PH to generate gate drive voltage for integrated high-side MOSFET. |
| NC (2,3) | No-connect | Internally unconnected; must remain floating - no routing or soldering required. |
| VSENSE | Feedback input | Monitors resistor divider output voltage; regulates VOUT by holding VSENSE = 1.221V ±1.5%. |
| ENA | Enable control | Active-high logic input; <0.5V disables device (18μA quiescent), >1.3V initiates soft-start sequence. |
| GND | Power ground | Reference for all internal circuits and return path for high-side switch current; requires low-impedance PCB plane. |
| VIN | Main input supply | Accepts 5.5–36V; bypassed locally with ≥4.7μF ceramic capacitor to suppress high-frequency ripple and EMI. |
| PH | Power switch node | Drives external inductor and catch diode; carries high di/dt switching current - minimize loop area for EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | 110mΩ typical RDS(on) reduces BOM count and improves efficiency vs discrete FET + controller solutions. |
| Internal compensation | Eliminates need for external Type III compensation network - simplifies design and improves stability margin across load/line ranges. |
| Voltage feed-forward | Maintains constant modulator gain across input voltage variation, improving line transient response without tuning. |
| Internal slow-start | 8ms typical ramp time prevents inrush current and output overshoot during power-up or ENA assertion. |
| Comprehensive protection | Includes UVLO, OCP (hiccup mode), OVP, and thermal shutdown - enables reliable operation without external supervision ICs. |
Applications
| Consumer Display Power | Automotive Audio Supply |
|---|---|
Use Scenario: Powering backlight and logic rails in LCD/DVD set-top boxes with 12V or 24V input. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 3.3V/5V/12V outputs with fast transient response to video frame rate changes. Use Value: Fixed 500kHz switching and internal compensation reduce component count and layout area versus discrete controllers. | Use Scenario: Generating clean 5V or 12V rail for DSP, amplifiers, and interface ICs in car audio head units. IC Role / Device Role / Timing Role: High-efficiency buck converter handling wide input transients (load dump, cold crank) while maintaining regulated output. Use Value: 5.5V–36V input range and –40°C to 125°C operation meet automotive environmental requirements without derating. |
| Battery Charger Bias Supply | LED Driver Pre-Regulator |
Use Scenario: Providing isolated auxiliary power for charger control circuitry in 12V/24V battery charging systems. IC Role / Device Role / Timing Role: Secondary regulator stepping down main bus voltage to power microcontrollers, ADCs, and gate drivers. Use Value: 18μA shutdown current extends standby battery life; ENA pin enables synchronized wake-up with charging state machine. | Use Scenario: Regulating input to constant-current LED driver ICs in high-power signage or automotive lighting modules. IC Role / Device Role / Timing Role: Pre-regulator maintaining constant headroom above LED string forward voltage to maximize driver efficiency. Use Value: Adjustable output down to 1.22V allows precise headroom control; 1A capability supports multi-string configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS5420DG4 | 2A output rating, same SOIC-8 package, identical pinout and control architecture. | Higher current capability suits designs requiring >1A or future-proofing for load growth. | Select when output current demand exceeds 1A or when shared layout reuse across 1A/2A variants is prioritized. |
| LM2678-12DDAR | Fixed 12V output, 5A rating, larger SOIC-8 footprint (6.2mm × 7.5mm), no internal compensation. | Designed for fixed-output, higher-current applications where feedback adjustment is unnecessary. | Choose only if fixed 12V output suffices and external compensation is acceptable for stability tuning. |
Compared with TPS5410DG4, TPS5420DG4 offers scalable current capacity within identical footprint and feature set, while LM2678-12DDAR trades adjustability and integration for higher fixed-output current - making TPS5410DG4 optimal for space-constrained, variable-output designs needing minimal external components.
Availability
TPS5410DG4 is available at Aetrix Electronics and suitable for consumer display power, automotive audio supply, battery charger bias, and LED driver pre-regulator applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS5410DG4 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 TPS54xx family delivers integrated, easy-to-use DC/DC converters targeting cost-sensitive, space-constrained applications in consumer, industrial, and automotive markets - emphasizing reduced design time and minimized external component count.
FAQ
What is the absolute maximum input voltage rating for the TPS5410DG4?
The TPS5410DG4 has an absolute maximum input voltage rating of 40V on the VIN pin relative to GND. Exceeding this value may cause permanent damage. The recommended operating range remains 5.5V to 36V per datasheet specifications. Always ensure transient spikes - such as load dump in automotive systems - stay within the 40V limit, and use appropriate clamping or filtering if needed. The TPS5410DG4's internal UVLO and thermal protection do not override absolute maximum ratings.
Does the TPS5410DG4 require external compensation components?
No, the TPS5410DG4 features fully internal compensation designed for voltage-mode control, eliminating the need for external RC networks or op-amps. This simplifies layout and improves reliability across temperature and load variations. The internal Type III compensation is optimized for standard output filter configurations (10–100μH inductors, low-ESR capacitors). While external compensation is not supported, TI provides WEBENCH® tools and reference designs validated for TPS5410DG4 to ensure stable operation without manual tuning.
How does the ENA pin function on the TPS5410DG4?
The ENA pin on the TPS5410DG4 is an active-high enable input with 1.3V typical rising threshold and 0.5V falling threshold. When pulled above 1.3V (or left floating, due to internal pullup), the device starts switching after internal slow-start. Below 0.5V, it enters shutdown with ~18μA quiescent current. The pin accepts open-drain logic signals directly - no external pullup is required. This behavior is confirmed in the TPS5410DG4 datasheet Section 5.5 and Section 6.3.3, and applies identically across all TPS5410 variants including DG4.
What is the purpose of the BOOT pin on the TPS5410DG4?
On the TPS5410DG4, the BOOT pin supplies gate drive voltage to the integrated high-side N-channel MOSFET via a bootstrap capacitor connected between BOOT and PH pins. A 0.01μF X7R/X5R ceramic capacitor is required; its charge is replenished through an internal bootstrap diode during each switching cycle. This architecture avoids needing a separate high-voltage bias supply. Incorrect BOOT capacitor selection - such as wrong dielectric or insufficient voltage rating - causes erratic switching or failure to start, as documented in TPS5410DG4 datasheet Sections 4 and 6.3.5.
Can the TPS5410DG4 operate reliably at 125°C junction temperature?
Yes, the TPS5410DG4 is rated for continuous operation at up to 125°C junction temperature, with thermal shutdown activating at 135°C (±27°C) and 14°C hysteresis. Its SOIC-8 package exhibits 75°C/W junction-to-ambient thermal resistance on a custom board, meaning proper PCB copper area and airflow are essential to sustain 125°C ambient operation at full 1A load. Derating curves in the TPS5410DG4 datasheet Figure 5-7 confirm stable quiescent current and oscillator frequency across this full range, validating suitability for industrial and under-hood automotive use cases.
TPS5410DG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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):
- 31.32V
- Current - Output:
- 1A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS5410DG4 FAQ
1.How can I place an order for TPS5410DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS5410DG4 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 TPS5410DG4 reliable?
The price and inventory of TPS5410DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS5410DG4 is usually 5 days.
3.What payment methods are accepted for TPS5410DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS5410DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS5410DG4?
TPS5410DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS5410DG4 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 TPS5410DG4?
For technical support, including TPS5410DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS5410DG4 requirements.
6.How does Aetrix verify that TPS5410DG4 is sourced from the original manufacturer or authorized distributors?
All TPS5410DG4 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 TPS5410DG4 meets industry standards.
7.What is the process for return or replacement of TPS5410DG4?
All TPS5410DG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS5410DG4, 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 TPS5410DG4 part is unused and in its original packaging.
Return procedure for TPS5410DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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