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Texas Instruments TPS564208DDCR
- Part No.:
- TPS564208DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS564208DDCR.pdf
- Description:
- IC REG BUCK ADJ 4A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,705
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Product details
Overview
TPS564208DDCR from Texas Instruments is a 4-A synchronous step-down DC-DC converter in SOT-23-6 (DDC) package, designed for compact point-of-load regulation. It integrates 50-mΩ high-side and 22-mΩ low-side MOSFETs, operates from 4.5 V to 17 V input, delivers adjustable output from 0.76 V to 7 V, and uses D-CAP2™ control for fast transient response in digital TV and STB power rails.
For engineers reviewing the TPS564208DDCR datasheet, TPS564208DDCR pinout, TPS564208DDCR application, or TPS564208DDCR equivalent, key selection factors include its 560-kHz fixed-frequency operation, 1.6% VFB accuracy at 25°C, hiccup-mode overcurrent protection, pre-biased startup capability, and thermal shutdown at 172°C - all critical for reliable 4-A load regulation in space-constrained consumer electronics.
Technical Context
The TPS564208DDCR employs D-CAP2™ adaptive on-time control, combining internal ramp compensation with valley-current sensing to enable stable operation with ultra-low-ESR ceramic or polymer output capacitors-no external compensation required. Its control loop maintains quasi-fixed 560-kHz switching across input voltage (4.5–17 V) and output voltage (0.76–7 V) ranges via VIN- and VOUT-proportional on-time adjustment.
Protection architecture includes cycle-by-cycle overcurrent limiting using low-side FET RDS(on) voltage sensing, non-latching undervoltage lockout (UVLO) with 4.3-V turn-on threshold, and thermal shutdown at 172°C with 38°C hysteresis. Startup supports pre-biased outputs via internal soft-start reference ramping only after VFB falls below the rising reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Continuous 4 A - supports full-load operation in digital set-top boxes and surveillance systems without external current sharing. |
| Input Voltage Range | 4.5 V to 17 V - compatible with 5-V, 9-V, 12-V, and 15-V intermediate bus rails in consumer power supplies. |
| Switching Frequency | 560 kHz - enables compact magnetics and predictable EMI filtering while maintaining >85% efficiency at 2-A load with 12-V input. |
| Feedback Accuracy | ±1.6% at 25°C - ensures tight output regulation for sensitive SoC cores requiring 1.05-V ±3% rails. |
| Shutdown Current | <5 µA - minimizes standby power loss in always-on subsystems such as HDMI receiver standby circuits. |
| Thermal Shutdown | 172°C with 38°C hysteresis - provides robust fault recovery in enclosed enclosures without forced airflow. |
| Soft-Start Time | 1.0 ms - prevents inrush current into large output capacitance (e.g., 44 µF ceramic bank) during cold start. |
Pinout & Package
The TPS564208DDCR is housed in a 6-pin SOT-23 (DDC) package measuring 1.6 mm × 2.9 mm, optimized for thermal performance with RθJA = 86.3°C/W and RθJB = 13.3°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Power and signal ground reference | Common return for low-side FET source, controller logic, and feedback network - must be connected at single-point to minimize noise coupling into VFB. |
| SW | Switch node | Drain connection of high-side FET and source of low-side FET - requires low-inductance layout to SW copper pour for efficient energy transfer and EMI control. |
| VIN | Main input supply | High-voltage rail input (4.5–17 V); connects to drain of high-side FET - must be decoupled with ≥10-µF ceramic capacitor placed adjacent to pin 3. |
| VFB | Feedback input | Monitors output voltage via resistor divider; 760-mV nominal threshold - accuracy directly determines output regulation tolerance (±1.6% at 25°C). |
| EN | Enable control | Active-high logic input (1.6-V threshold); internal 425-kΩ pull-down - allows system-level sequencing and standby mode activation without external circuitry. |
| VBST | Bootstrap supply | Provides gate drive voltage for high-side FET; requires 0.1-µF ceramic capacitor between VBST and SW - critical for sustaining 50-mΩ RDS(on) performance across duty cycles. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ control mode | Enables stable regulation with zero-ESR ceramic capacitors and eliminates external compensation components - reduces BOM count and layout complexity. |
| Integrated 50-mΩ/22-mΩ FETs | Delivers 4-A continuous output with <1.2-W conduction loss at 12-V input/1.05-V output - avoids discrete MOSFET selection and gate driver design. |
| Pre-biased output startup | Allows safe ramp-up when output capacitor is already charged - essential for hot-swap and multi-rail sequencing in digital TV platforms. |
| Hiccup-mode OCP | Enters 15.5-ms restart delay after overcurrent detection - protects against sustained short-circuit faults without latch-up or manual reset. |
| Low 10-µA shutdown current | Supports <100-µW system standby power - meets Energy Star and EU CoC Tier 2 requirements for connected home devices. |
Applications
| Digital TV Power Supply | High Definition Blu-ray™ Disc Players |
|---|---|
Use Scenario: Primary 1.05-V/4-A core rail for main SoC in 4K UHD television platforms. IC Role / Device Role / Timing Role: Synchronous buck regulator providing tightly regulated, low-noise DC output with fast load-step response to dynamic CPU/GPU activity. Use Value: D-CAP2™ control achieves <±5% output deviation during 2-A transient steps - eliminates need for oversized output capacitance and reduces board area by 30% vs. voltage-mode alternatives. | Use Scenario: Standby and active-mode 3.3-V/2-A rail for BD-ROM controller and HDMI PHY in premium Blu-ray players. IC Role / Device Role / Timing Role: High-efficiency step-down converter supporting dual operating modes: 560-kHz PWM under load and ultra-low-quiescent pulse-skipping at light loads. Use Value: 89% peak efficiency at 1-A load with 12-V input enables passive cooling - eliminates fan noise critical for home theater audio fidelity. |
| Digital Set Top Box (STB) | Surveillance |
Use Scenario: 1.2-V/3-A processor rail in IP-based cable/satellite STBs with integrated Wi-Fi and video decoding. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC regulator delivering stable output across –40°C to 85°C ambient with no derating. Use Value: RθJB = 13.3°C/W enables full 4-A operation on 2-layer PCBs - avoids costly thermal vias or metal-core substrates in cost-sensitive STB designs. | Use Scenario: 5-V/3-A auxiliary rail powering image sensor interface, ISP, and PoE-powered Ethernet PHY in indoor IP cameras. IC Role / Device Role / Timing Role: Input-flexible buck converter accepting wide-range 5–17-V PoE-derived input while maintaining regulated 5-V output. Use Value: UVLO hysteresis (0.4 V) prevents oscillation during brown-out conditions on long PoE cables - ensures reliable boot and runtime stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS564201DDCR | Same D-CAP2™ control and pinout, but rated for 2-A output and higher RDS(on) (70 mΩ/35 mΩ). | Suitable for lower-power STB peripherals or auxiliary rails where 4-A headroom is unnecessary. | Select when thermal budget or cost constraints outweigh need for 4-A capability - shares same layout and feedback network. |
| MP2342GDD-Z | Monolithic 4-A buck with 500-kHz frequency, but uses current-mode control and requires external compensation. | Better suited for designs needing programmable frequency or tighter current limit tolerance (±10% vs. TPS564208's ±20%). | Choose when design requires adjustable switching frequency or compatibility with legacy current-mode layout practices - not pin-compatible. |
Compared with TPS564201DDCR, the TPS564208DDCR delivers double the output current with identical footprint and control architecture; versus MP2342GDD-Z, it eliminates compensation components and simplifies layout but fixes frequency at 560 kHz - making it optimal for cost- and space-sensitive consumer applications demanding proven 4-A reliability.
Availability
TPS564208DDCR is available at Aetrix Electronics and suitable for digital TV power supply, high-definition Blu-ray disc players, and digital set-top box (STB) applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS564208DDCR 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 TPS564208DDCR belongs to TI's D-CAP2™ family of easy-to-use synchronous buck regulators, engineered specifically for consumer electronics requiring minimal external components, fast transient response, and robust protection in compact SOT-23 packages.
FAQ
What is the maximum continuous output current of the TPS564208DDCR?
The TPS564208DDCR is rated for 4-A continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design). This rating assumes use of the specified 1.5–4.7-µH inductor and ≥20-µF low-ESR ceramic output capacitance, as validated in TI's reference design TPS564208EVM-741. Derating applies above 85°C ambient.
Does the TPS564208DDCR support pre-biased output startup?
Yes, the TPS564208DDCR supports pre-biased output startup. When the output capacitor is pre-charged, the device delays switching until the internal soft-start reference voltage exceeds the feedback voltage (VFB), preventing reverse current flow and ensuring monotonic ramp-up - a critical feature for multi-rail systems like digital TVs and STBs.
What package type and dimensions does the TPS564208DDCR use?
The TPS564208DDCR uses a 6-pin SOT-23 package designated DDC, with nominal body dimensions of 1.60 mm × 2.90 mm and standard 0.95-mm pitch. It features exposed thermal pad geometry optimized for bottom-side heat dissipation, achieving RθJB = 13.3°C/W on 2-layer JEDEC-standard PCBs.
Can the TPS564208DDCR operate with ceramic output capacitors only?
Yes, the TPS564208DDCR is fully compatible with ceramic-only output capacitors due to its D-CAP2™ control architecture, which eliminates the need for ESR-based compensation. TI recommends 20–68 µF total ceramic capacitance (e.g., two 22-µF X5R 0805s) with typical ESR < 5 mΩ - verified in efficiency curves up to 4-A load.
What is the feedback voltage threshold and accuracy of the TPS564208DDCR?
The TPS564208DDCR has a nominal feedback voltage threshold of 760 mV, with guaranteed accuracy of ±1.6% over temperature (–40°C to 125°C junction) and line/load conditions. This precision directly defines output voltage tolerance when using standard 1% resistor dividers, enabling compliance with tight SoC core rail specifications (e.g., 1.05 V ±3%).
TPS564208DDCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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
TPS564208DDCR FAQ
1.How can I place an order for TPS564208DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS564208DDCR 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 TPS564208DDCR reliable?
The price and inventory of TPS564208DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS564208DDCR is usually 5 days.
3.What payment methods are accepted for TPS564208DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS564208DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS564208DDCR?
TPS564208DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS564208DDCR 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 TPS564208DDCR?
For technical support, including TPS564208DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS564208DDCR requirements.
6.How does Aetrix verify that TPS564208DDCR is sourced from the original manufacturer or authorized distributors?
All TPS564208DDCR 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 TPS564208DDCR meets industry standards.
7.What is the process for return or replacement of TPS564208DDCR?
All TPS564208DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS564208DDCR, 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 TPS564208DDCR part is unused and in its original packaging.
Return procedure for TPS564208DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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