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Texas Instruments TPS563201DDCT
- Part No.:
- TPS563201DDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS563201DDCT.pdf
- Description:
- IC REG BUCK ADJ 3A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:32,676
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Product details
Overview
TPS563201DDCT from Texas Instruments is a 3A synchronous step-down DC-DC converter in a 6-pin SOT-23 (DDC) package, operating from 4.5V to 17V input and delivering adjustable output from 0.76V to 7V. It employs D-CAP2™ control for fast transient response, uses integrated 95mΩ/57mΩ MOSFETs, and operates in pulse-skip (Eco-mode) for high light-load efficiency in digital TV, STB, and surveillance power rails.
For engineers reviewing the TPS563201DDCT datasheet, TPS563201DDCT pinout, TPS563201DDCT application, or TPS563201DDCT equivalent, key selection criteria include Eco-mode operation, 580kHz switching frequency, 2% VFB accuracy at 25°C, startup from prebiased output, and cycle-by-cycle overcurrent protection with hiccup-mode recovery.
Technical Context
The TPS563201DDCT implements adaptive on-time D-CAP2™ control, eliminating external compensation while supporting low-ESR ceramic and polymer capacitors. Its internal one-shot timer sets on-time proportional to VIN and inversely proportional to VOUT, enabling quasi-fixed 580kHz operation across input voltage range.
Eco-mode operation initiates when inductor current reaches zero, reducing switching frequency proportionally to load current to maintain >85% efficiency down to 1mA. Protection includes non-latching UVLO (3.8V–4.3V), thermal shutdown at 172°C with 37°C hysteresis, and valley-current-based cycle-by-cycle OCL with hiccup-mode recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 17V - supports wide industrial and consumer DC bus inputs including 5V, 9V, 12V, and 15V rails. |
| Output Current | 3A continuous - delivers full rated current with thermal derating per RθJA = 92.6°C/W in standard PCB layout. |
| Switching Frequency | 580kHz nominal - enables compact magnetics and filtering; drops to ~200kHz under low-VIN or light-load Eco-mode conditions. |
| VFB Accuracy | ±2% at 25°C - ensures precise output regulation; maintains ±2.5% over –40°C to 125°C junction temperature range. |
| Shutdown Current | <20µA - minimizes system standby power; enables battery-backed or always-on subsystems with ultra-low quiescent drain. |
| Soft Start Time | 1.0ms fixed - prevents inrush current and output overshoot during power-up; supports prebiased output startup without reverse current. |
| Thermal Shutdown | 172°C threshold with 37°C hysteresis - provides robust overtemperature protection without latch-up, enabling automatic recovery after cooling. |
Pinout & Package
TPS563201DDCT is housed in a 6-pin SOT-23 (DDC) package measuring 1.6mm × 2.9mm, optimized for space-constrained applications and compatible with standard SMT reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal ground reference | Common return for low-side FET source and controller circuitry; feedback ground must tie here at single point to avoid noise coupling. |
| SW (Pin 2) | Switch node | Connection between high- and low-side internal MOSFETs; requires tight layout to SW–VBST capacitor and inductor to minimize ringing and EMI. |
| VIN (Pin 3) | Main input supply | Connects to 4.5–17V input rail; must be decoupled with ≥10µF ceramic + optional 0.1µF high-frequency cap near pin. |
| VFB (Pin 4) | Feedback input | Senses output voltage via resistor divider; input bias current <±0.1µA allows use of high-value resistors to reduce divider power loss. |
| EN (Pin 5) | Enable control | Active-high logic input (1.6V threshold); internal 600–2400kΩ pulldown enables direct MCU GPIO control without external pullup. |
| VBST (Pin 6) | Bootstrap supply | Drives high-side gate; requires 0.1µF ceramic capacitor between VBST and SW pins-critical for proper high-side FET turn-on. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ control architecture | Enables stable operation with zero-ESR ceramic output capacitors and eliminates external compensation network, reducing BOM count and layout sensitivity. |
| Pulse-skip Eco-mode | Maintains >85% efficiency at 1mA load by dynamically reducing switching frequency-ideal for standby and sleep-state power domains. |
| Prebiased output startup | Allows safe ramp-up when output capacitor is precharged, preventing reverse current flow and enabling hot-swap or multi-rail sequencing. |
| Cycle-by-cycle overcurrent limit | Detects valley current during low-side conduction to provide accurate, temperature-compensated current limiting without sensing resistors. |
| Non-latching protections | UVLO, UVP, OVP, and thermal shutdown all auto-recover after fault removal-eliminates need for manual reset or external supervision circuitry. |
Applications
| Digital TV Power Supply | Surveillance System Rail |
|---|---|
Use Scenario: Powers SoC core voltage (1.05V/1.2V) and memory interface rails in 4K UHD digital TVs with dynamic backlight and video processing loads. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering tightly regulated, low-noise 3A output with fast transient response to handle bursty video decode workloads. Use Value: D-CAP2™ control reduces required output capacitance by 30–50% versus voltage-mode controllers, shrinking board area while maintaining <±5% load regulation. | Use Scenario: Supplies image sensor, ISP, and network processor in IP cameras and DVR/NVR systems operating in extended temperature environments. IC Role / Device Role / Timing Role: Main 3.3V or 5V system rail regulator with hiccup-mode OCP to survive sustained overload from motorized pan-tilt-zoom actuators. Use Value: 172°C thermal shutdown with 37°C hysteresis ensures reliable operation in sealed enclosures up to 70°C ambient without forced air cooling. |
| Digital Set Top Box (STB) | Networking Home Terminal |
Use Scenario: Generates 1.8V CPU core and 3.3V I/O rails in cable/satellite STBs with HDMI, USB, and Ethernet interfaces. IC Role / Device Role / Timing Role: Dual-output capable via resistor-divider programming; supports dynamic voltage scaling during channel change or recording events. Use Value: 2% VFB accuracy and 1ms soft-start ensure stable boot sequence and compliance with STB power sequencing requirements (e.g., CEA-2033). | Use Scenario: Powers Wi-Fi 6/6E baseband processors and PHY in residential gateways and mesh nodes with strict standby power budgets. IC Role / Device Role / Timing Role: Always-on 1.05V or 1.2V rail with sub-20µA shutdown current enabling Energy Star Tier 2 and EU CoC v5 compliance. Use Value: Eco-mode extends battery backup runtime by 3× versus continuous conduction mode regulators under typical idle traffic conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS563208DDCT | Fixed-frequency continuous conduction mode (CCM); no Eco-mode; higher light-load quiescent current (350–500µA vs. 120–200µA) | Better suited for constant-load applications requiring predictable EMI profile; less efficient below 100mA | Select TPS563208DDCT when deterministic switching frequency and minimal frequency variation are required for EMI filtering. |
| MP2332GDD-Z | Monolithic 3A buck with 4.5–28V input; 500kHz fixed frequency; no prebias startup; requires external compensation | Lacks D-CAP2™ simplicity and prebias capability; wider VIN range trades off for larger package (SOT563) | Choose MP2332GDD-Z only if input exceeds 17V or if design already uses MPS ecosystem tools and support infrastructure. |
Compared with TPS563208DDCT, the TPS563201DDCT offers superior light-load efficiency and simpler layout but sacrifices frequency predictability; versus MP2332GDD-Z, it provides better integration and thermal performance in smaller footprint but narrower input range.
Availability
TPS563201DDCT is available at Aetrix Electronics and suitable for digital TV, surveillance, and networking applications requiring stable component supply, long-term production continuity, and automotive-grade reliability screening.
Supply support for TPS563201DDCT 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 ICs, with decades of expertise in high-efficiency DC-DC conversion.
The TPS56320x family was designed specifically for space-constrained, cost-sensitive consumer and industrial point-of-load applications demanding high efficiency across full load range and minimal external components.
FAQ
What is the maximum recommended output current for TPS563201DDCT under continuous operation?
The TPS563201DDCT is rated for 3A continuous output current under recommended operating conditions (TJ ≤ 125°C). Actual achievable current depends on PCB copper area, airflow, and input/output voltage differential. With 2oz copper and moderate airflow, full 3A can be sustained; thermal derating begins above 100°C junction temperature per RθJA = 92.6°C/W specification. The TPS563201DDCT includes cycle-by-cycle overcurrent protection that limits peak switch current to 4.2A typical.
Does TPS563201DDCT support startup into a precharged output capacitor?
Yes, the TPS563201DDCT supports prebiased output startup. When the output capacitor is precharged, the device delays switching until the internal reference voltage ramps above the sensed VFB voltage, preventing reverse current flow and ensuring monotonic rise. This behavior is confirmed in Section 6.3.3 of the datasheet and validated in typical application schematics. The TPS563201DDCT does not require external diodes or sequencing controllers for this function.
What is the purpose of the VBST pin on TPS563201DDCT, and what capacitor value is required?
The VBST pin supplies the gate drive voltage for the internal high-side MOSFET. It must be connected to the SW node through a 0.1µF ceramic capacitor (X7R or better, 10V rating minimum) to form a bootstrap charge pump. This capacitor replenishes gate charge each switching cycle; undersizing causes high-side FET dropout and regulation failure. TI specifies 0.1µF as mandatory-larger values do not improve performance and may slow startup. The TPS563201DDCT will not operate correctly without this capacitor properly installed.
How does Eco-mode operation affect the switching frequency of TPS563201DDCT?
Eco-mode reduces the effective switching frequency of the TPS563201DDCT in inverse proportion to load current. At full 3A load, frequency remains near 580kHz; at 10mA, it drops to ~50kHz; at 1mA, it falls further to ~5kHz. This pulse-skipping behavior maintains high efficiency (>85%) across ultra-light loads by minimizing switching losses. Frequency is not programmable-the TPS563201DDCT automatically transitions between CCM and Eco-mode based on inductor current zero-crossing detection.
Can TPS563201DDCT be used with ceramic output capacitors only, or are electrolytic capacitors required?
The TPS563201DDCT is explicitly designed for ceramic-only output capacitors and does not require electrolytic or polymer types. Its D-CAP2™ control architecture is stable with zero-ESR ceramics, and TI recommends 20–68µF total capacitance using X5R/X7R MLCCs (e.g., two 22µF 0805 caps). Electrolytics introduce unnecessary ESR, degrade transient response, and reduce reliability. The TPS563201DDCT's valley-current OCL and hiccup-mode protection remain fully functional with ceramic-only designs.
TPS563201DDCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP2™, Eco-Mode™
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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):
- 4.5V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.768V
- Voltage - Output (Max):
- 7V
- Current - Output:
- 3A
- Frequency - Switching:
- 580kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS563201DDCT FAQ
1.How can I place an order for TPS563201DDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS563201DDCT 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 TPS563201DDCT reliable?
The price and inventory of TPS563201DDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS563201DDCT is usually 5 days.
3.What payment methods are accepted for TPS563201DDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS563201DDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS563201DDCT?
TPS563201DDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS563201DDCT 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 TPS563201DDCT?
For technical support, including TPS563201DDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS563201DDCT requirements.
6.How does Aetrix verify that TPS563201DDCT is sourced from the original manufacturer or authorized distributors?
All TPS563201DDCT 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 TPS563201DDCT meets industry standards.
7.What is the process for return or replacement of TPS563201DDCT?
All TPS563201DDCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS563201DDCT, 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 TPS563201DDCT part is unused and in its original packaging.
Return procedure for TPS563201DDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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