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Texas Instruments TPS564201DDCT
- Part No.:
- TPS564201DDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS564201DDCT.pdf
- Description:
- IC REG BUCK ADJ 4A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:15,572
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Product details
Overview
TPS564201 from Texas Instruments is a 4-A synchronous step-down DC-DC converter in a 6-pin SOT-23 (DDCT) package, featuring D-CAP2™ adaptive on-time control, 560-kHz fixed switching frequency, 4.5-V to 17-V input range, and 0.76-V to 7-V adjustable output voltage. It integrates 50-mΩ high-side and 22-mΩ low-side MOSFETs and delivers up to 4 A continuous output current for compact point-of-load power in digital TV and STB applications.
For engineers reviewing the TPS564201 datasheet, TPS564201 pinout, TPS564201 application, or TPS564201 equivalent, key selection considerations include its pulse-skip Eco-mode™ for light-load efficiency, 1.6% VFB accuracy at 25°C, startup from pre-biased outputs, cycle-by-cycle overcurrent protection, and thermal shutdown at 172°C - all in a 1.6 mm × 2.9 mm surface-mount package.
Technical Context
The TPS564201 employs D-CAP2™ mode control - an adaptive on-time architecture that eliminates external compensation by embedding internal ramp generation and pseudo-fixed-frequency operation. It supports ultra-low-ESR ceramic and polymer output capacitors without stability tuning.
Its functional modes include continuous conduction mode (CCM) at ~560 kHz under medium-to-heavy loads, Eco-mode™ pulse-skipping during light loads to maintain >80% efficiency down to 10 mA, and standby with <5 µA shutdown current when EN is low. Protection includes hiccup-mode overcurrent, non-latching UVP/TSD, and UVLO with 4.3-V turn-on threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 17 V - supports wide industrial and consumer input rails including 5 V, 9 V, 12 V, and 15 V supplies. |
| Output Current | 4 A continuous - sufficient for powering SoCs, FPGAs, and DDR memory rails in digital video equipment. |
| Switching Frequency | 560 kHz - enables compact magnetics and predictable EMI filtering while balancing efficiency and size. |
| VFB Accuracy | ±1.6% at 25°C - ensures tight output regulation across load/line/temperature for sensitive logic supplies. |
| RDS(on) HS / LS | 50 mΩ / 22 mΩ - integrated MOSFETs minimize conduction loss and eliminate external switch selection. |
| Soft Start Time | 1.0 ms fixed - prevents inrush current and ensures controlled rail ramp-up during system power-on. |
| Shutdown Current | <5 µA - enables ultra-low quiescent power in always-on or battery-backed subsystems. |
Pinout & Package
TPS564201 is housed in a thermally enhanced 6-pin SOT-23 package (DDCT), measuring 1.60 mm × 2.90 mm with exposed pad for improved thermal dissipation. The package is RoHS-compliant and rated for –40°C to +125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal ground reference | Common return path for low-side FET source and controller ground; feedback trace must connect here to avoid noise coupling. |
| SW (Pin 2) | Switch node | Connection between high- and low-side MOSFETs; requires tight layout to minimize ringing and EMI. |
| VIN (Pin 3) | Main input supply | Accepts 4.5–17 V; must be decoupled with ≥10 µF ceramic capacitor close to pin for transient response. |
| VFB (Pin 4) | Feedback input | Senses output voltage via resistor divider; 760 mV nominal threshold sets regulated output (VOUT = 0.76 V × (1 + R1/R2)). |
| EN (Pin 5) | Enable control | Active-high logic input; pulls up internally; 1.6 V threshold enables precise sequencing with external supervisors. |
| VBST (Pin 6) | Bootstrap supply | Drives high-side gate; requires 0.1 µF ceramic capacitor between VBST and SW for proper bootstrap charging. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ control architecture | Enables stable operation with zero-ESR ceramic capacitors and eliminates external compensation components - reducing BOM count and layout complexity. |
| Pulse-skip Eco-mode™ | Maintains >85% efficiency at 10 mA load by dynamically skipping switching cycles - critical for standby power compliance in consumer electronics. |
| Pre-biased output startup | Allows safe ramp-up even when output capacitor is pre-charged - avoids reverse current flow and protects downstream circuitry. |
| Cycle-by-cycle overcurrent limit | Detects valley current during low-side conduction to provide fast, accurate current limiting - prevents MOSFET failure under short-circuit conditions. |
| Non-latching thermal shutdown | Shuts down at 172°C junction temperature and auto-restarts after cooldown - ensures robust operation in thermally constrained enclosures. |
Applications
| Digital TV Power Supply | High Definition Blu-ray™ Disc Player |
|---|---|
Use Scenario: Powers SoC core, memory, and video processing ICs requiring tightly regulated 1.05 V, 1.2 V, or 1.8 V rails with fast transient response. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering up to 4 A with D-CAP2™ control ensuring sub-50-µs recovery from 2-A load steps. Use Value: Eliminates need for external compensation and reduces output capacitance by 30% vs traditional voltage-mode controllers. |
Use Scenario: Supplies HDMI PHY, audio DAC, and servo motor drivers in space-constrained optical disc players. IC Role / Device Role / Timing Role: Compact 1.6 mm × 2.9 mm step-down regulator enabling single-layer PCB layouts and minimizing thermal footprint. Use Value: Achieves >90% peak efficiency at 3.3 V/2 A output, directly lowering thermal load and eliminating heatsinks. |
| Digital Set Top Box (STB) | Surveillance Camera System |
Use Scenario: Generates clean 1.5 V CPU core and 3.3 V I/O rails in fanless STB enclosures where acoustic noise and heat are prohibited. IC Role / Device Role / Timing Role: High-efficiency buck converter operating in Eco-mode™ during channel standby to meet Energy Star® 7.0 requirements. Use Value: Delivers <5 µA shutdown current and maintains >82% efficiency at 50 mA, extending low-power mode duration. |
Use Scenario: Powers image sensor, ISP, and wireless module in IP cameras deployed in outdoor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Industrial-grade regulator qualified for –40°C to +125°C junction operation with hiccup-mode fault recovery. Use Value: Withstands 17-V transients on 12-V PoE-derived inputs and sustains regulation during brownouts via 4.3-V UVLO threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS564208DDCT | Same pinout and package; adds programmable soft-start (0.5–10 ms) and adjustable current limit (3–6 A); higher 600-kHz default frequency. | Better suited for systems requiring sequenced power-up or custom overcurrent thresholds - e.g., multi-rail FPGA boards. | Select TPS564208DDCT when design flexibility outweighs cost sensitivity; retains full compatibility with existing TPS564201 layouts. |
| MP2342GJ-Z | Monolithic 4-A buck in 8-pin TSOT23; 2.5–18 V input; 500-kHz switching; no pre-bias startup; ±2% FB accuracy. | Lacks D-CAP2™ control - requires external compensation; lower VFB accuracy increases output tolerance; not suitable for ultra-low-ripple applications. | Choose MP2342GJ-Z only if footprint compatibility is secondary and cost is primary; verify loop stability with ceramic output caps. |
Compared with TPS564201, TPS564208DDCT offers enhanced configurability without layout changes, while MP2342GJ-Z trades performance and feature set for lower unit cost - making TPS564201 the optimal balance of integration, precision, and ease-of-use for consumer video power designs.
Availability
TPS564201 is available at Aetrix Electronics and suitable for digital TV power supply, HD Blu-ray player, and surveillance camera applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS564201 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-efficiency DC-DC conversion.
The TPS564201 belongs to TI's D-CAP2™ family of easy-to-use synchronous buck regulators, designed specifically for space-constrained consumer electronics needing minimal external components and fast transient response without compensation design effort.
FAQ
What is the maximum output current capability of the TPS564201?
The TPS564201 delivers up to 4 A continuous output current under recommended operating conditions (TJ ≤ 125°C, adequate PCB copper area). Its integrated 50-mΩ high-side and 22-mΩ low-side MOSFETs enable this rating without external switches. Derating applies above 85°C ambient; thermal performance depends on layout, airflow, and board stack-up - refer to RθJA = 86.3°C/W in the datasheet for junction-to-ambient estimation. The TPS564201 remains fully functional within its absolute max ratings even at peak load.
Does the TPS564201 support startup into a pre-biased output?
Yes, the TPS564201 supports startup into a pre-biased output. When the EN pin is asserted high and the VFB voltage exceeds the internal reference (760 mV), the device delays switching until the internal soft-start ramp surpasses VFB - preventing reverse current flow and ensuring monotonic ramp-up. This behavior is confirmed in Section 7.3.3 of the TPS564201 datasheet and verified in typical application testing with 1.05-V/4-A reference design. No external circuitry is required to enable this function in the TPS564201.
What package type and dimensions does the TPS564201 use?
The TPS564201 uses a 6-pin SOT-23 package designated DDCT (also referenced as DDC in TI documentation), with nominal body dimensions of 1.60 mm × 2.90 mm and a standard 0.95-mm pitch. It features an exposed thermal pad on the bottom for enhanced heat dissipation. This package is distinct from larger SOIC or QFN variants and is optimized for high-density consumer PCBs. The TPS564201 DDCT footprint is not interchangeable with 8-pin SOT packages - pin count, spacing, and thermal pad presence differ.
How does the D-CAP2™ control mode improve transient response in the TPS564201?
The TPS564201's D-CAP2™ mode improves transient response by eliminating external compensation and using an internal ramp generator that emulates output ripple - enabling immediate correction of VFB deviations without phase-margin constraints. This architecture achieves typical load-step recovery in under 50 µs for 2-A steps, as shown in Figure 19 of the TPS564201 datasheet. Unlike voltage-mode or current-mode controllers, D-CAP2™ provides inherent stability with ceramic capacitors, reducing output capacitance requirements by up to 40% while maintaining tight regulation - a key advantage in the TPS564201's target applications.
What protection features are built into the TPS564201?
The TPS564201 integrates cycle-by-cycle overcurrent limiting, hiccup-mode fault recovery, non-latching thermal shutdown (172°C), non-latching undervoltage lockout (UVLO), and output undervoltage protection (UVP). Overcurrent detection occurs during low-side conduction using temperature-compensated RDS(on) sensing; thermal shutdown disables switching until junction temperature falls below hysteresis; UVLO activates at 4.3 V VIN and releases at 3.6 V. All protections are hardware-based and require no configuration - they operate autonomously in every TPS564201 unit.
TPS564201DDCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP2™
- 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):
- 0.76V
- Voltage - Output (Max):
- 7V
- Current - Output:
- 4A
- Frequency - Switching:
- 560kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS564201DDCT FAQ
1.How can I place an order for TPS564201DDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS564201DDCT 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 TPS564201DDCT reliable?
The price and inventory of TPS564201DDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS564201DDCT is usually 5 days.
3.What payment methods are accepted for TPS564201DDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS564201DDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS564201DDCT?
TPS564201DDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS564201DDCT 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 TPS564201DDCT?
For technical support, including TPS564201DDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS564201DDCT requirements.
6.How does Aetrix verify that TPS564201DDCT is sourced from the original manufacturer or authorized distributors?
All TPS564201DDCT 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 TPS564201DDCT meets industry standards.
7.What is the process for return or replacement of TPS564201DDCT?
All TPS564201DDCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS564201DDCT, 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 TPS564201DDCT part is unused and in its original packaging.
Return procedure for TPS564201DDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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