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Texas Instruments TPS565208DDCT
- Part No.:
- TPS565208DDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS565208DDCT.pdf
- Description:
- IC REG BUCK ADJ 5A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,730
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Product details
Overview
TPS565208DDCT from Texas Instruments is a 5-A synchronous step-down voltage regulator in SOT-23-6 (DDCT) package, operating from 4.5 V to 17 V input and delivering adjustable output from 0.76 V to 7 V. It integrates 31-mΩ high-side and 16-mΩ low-side MOSFETs, uses D-CAP2™ adaptive on-time control for fast transient response without external compensation, and targets compact DC/DC conversion in digital TV, STB, and surveillance power rails.
For engineers reviewing the TPS565208DDCT datasheet, TPS565208DDCT pinout, TPS565208DDCT application, or TPS565208DDCT equivalent, key selection criteria include its 500-kHz fixed switching frequency, 1% VFB accuracy, 1.0-ms internal soft-start, hiccup-mode overcurrent protection, and compatibility with low-ESR ceramic output capacitors - all critical for space-constrained, high-efficiency 5-A point-of-load designs.
Technical Context
The TPS565208DDCT implements D-CAP2™ mode control using adaptive on-time PWM with internal ramp injection and ripple simulation, enabling stable operation with zero-ESR ceramic capacitors and eliminating need for external compensation. Its control loop monitors VFB against a 760-mV reference and adjusts high-side on-time inversely with VIN and proportionally with VOUT to maintain quasi-fixed 500-kHz frequency across input and load variations.
Protection architecture includes cycle-by-cycle valley-current limiting via low-side RDS(on) sensing, non-latching thermal shutdown at 172°C, hiccup-mode recovery after overcurrent, and undervoltage lockout with 4.3-V turn-on and 3.6-V turn-off thresholds. Startup supports pre-biased outputs by delaying switching until internal reference exceeds VFB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 17 V - supports wide industrial and consumer DC bus inputs including 5 V, 9 V, 12 V, and 15 V rails. |
| Output Current | 5 A continuous - delivers full rated current in continuous conduction mode (CCM) with proper thermal layout. |
| Switching Frequency | 500 kHz - enables compact magnetics and predictable EMI filtering while balancing efficiency and size. |
| Feedback Accuracy | ±1% at 760 mV - ensures tight output regulation across temperature and line/load conditions. |
| High-Side RDS(on) | 31 mΩ at 25°C - minimizes conduction loss during high-side conduction phase. |
| Low-Side RDS(on) | 16 mΩ at 25°C - reduces conduction loss and improves light-load efficiency in synchronous rectification. |
| Shutdown Current | <1 µA - enables ultra-low power-off state for battery-backed or always-on systems. |
Pinout & Package
SOT-23-6 (DDCT) package: 1.6 mm × 2.9 mm body, 0.95 mm height, 0.95 mm pitch; thermally enhanced with exposed pad (not electrically connected); RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal ground reference | Common return for controller logic, low-side FET source, and feedback network - requires single-point Kelvin connection to minimize noise coupling into VFB. |
| SW (Pin 2) | Switch node | Connection between high- and low-side FETs; carries high di/dt switching waveform - must be routed short and wide to reduce EMI and voltage spikes. |
| VIN (Pin 3) | Main input supply | Drain of high-side FET and primary power input; requires local 10-µF ceramic decoupling capacitor placed adjacent to pin. |
| VFB (Pin 4) | Feedback input | Monitors output voltage via resistor divider; 760-mV threshold sets regulation point - trace must be shielded and远离 SW node to avoid noise-induced instability. |
| EN (Pin 5) | Enable control | Active-high logic input; 1.6-V threshold enables operation - pulled high via resistor or driven directly; supports sequencing and standby control. |
| VBST (Pin 6) | Bootstrap supply | Provides gate drive voltage for high-side FET; requires 0.1-µF ceramic capacitor between VBST and SW - no external charge pump needed. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ control mode | Enables stable regulation with ceramic output capacitors only - eliminates external compensation network and simplifies BOM. |
| Integrated power FETs | 31-mΩ high-side + 16-mΩ low-side MOSFETs - achieves >90% peak efficiency at 5 A without discrete switches or drivers. |
| Pre-biased startup | Allows safe ramp-up when output capacitor is pre-charged - prevents reverse current flow and maintains system integrity during hot-swap or rail sequencing. |
| Hiccup-mode OCP | Enters timed restart cycle (14.9 ms off, 1.8 ms on) during sustained overcurrent - protects FETs and PCB while enabling automatic recovery without host intervention. |
| Fixed 1.0-ms soft-start | Internally ramps reference voltage linearly - prevents inrush current, controls output voltage slew rate, and avoids undershoot during power-up. |
Applications
| Digital TV Power Supply | High Definition Blu-ray™ Disc Player |
|---|---|
Use Scenario: Supplies 1.05 V/5 A core voltage to SoC and 3.3 V/2 A I/O rail in slim-profile flat-panel TV mainboard. IC Role / Device Role / Timing Role: Primary synchronous buck converter delivering regulated PoL voltage with fast transient response to handle video processing load bursts. Use Value: D-CAP2™ control maintains <±1% output regulation during 1-A/µs load steps, reducing required output capacitance by 30% versus voltage-mode controllers. |
Use Scenario: Powers video decoder ASIC and HDMI interface in HD Blu-ray player requiring low-noise, compact 1.2 V/4 A rail. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating at 500 kHz to minimize filter size while meeting strict EMI Class B limits. Use Value: Integrated 31-mΩ/16-mΩ FETs achieve 92% efficiency at 4 A, reducing thermal footprint and eliminating need for external MOSFET drivers. |
| Digital Set Top Box (STB) | Surveillance System Camera Module |
Use Scenario: Generates 1.8 V/3 A processor core rail and 5 V/1 A USB peripheral rail in cable/satellite STB with tight board area constraints. IC Role / Device Role / Timing Role: Dual-rail power solution where TPS565208DDCT handles core voltage and companion LDO supplies I/O. Use Value: SOT-23-6 package (1.6 × 2.9 mm) fits within 12-mm² footprint - 40% smaller than comparable SO-8 DC/DC solutions. |
Use Scenario: Provides 3.3 V/2.5 A imaging sensor and ISP power in IP camera module with ambient temperature up to 70°C. IC Role / Device Role / Timing Role: Robust PoL regulator with hiccup-mode OCP and thermal shutdown protecting against lens motor stall or environmental overheating. Use Value: Non-latching UVP and 172°C thermal shutdown ensure graceful fault recovery in unattended outdoor deployments without system reset. |
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 D-CAP2™ control, but rated for 4-A output and 34-mΩ/18-mΩ FETs; lower current capability and slightly higher RDS(on). | Preferred for 3–4 A loads where margin and thermal headroom are less critical; not suitable for sustained 5-A operation. | Select TPS564208DDCT only if output current requirement is ≤4 A and cost optimization is prioritized over peak performance. |
| MP2359DJ-LF-Z | Monolithic 5-A buck with 150-kHz fixed frequency, external compensation, and 100-mV VFB reference - lacks D-CAP2™, requires more external components. | Better suited for noise-sensitive analog rails where lower switching frequency eases EMI filtering; incompatible with ceramic-only output design. | Choose MP2359DJ-LF-Z when fixed-frequency operation and external loop tuning are required, or when sourcing from alternate suppliers is necessary. |
Compared with TPS565208DDCT, TPS564208DDCT offers identical integration and layout but reduced current rating, while MP2359DJ-LF-Z trades simplicity and ceramic-capacitor support for tunable loop dynamics and broader supplier availability - making TPS565208DDCT optimal for compact, high-transient 5-A digital power rails.
Availability
TPS565208DDCT is available at Aetrix Electronics and suitable for digital TV power supply, HD Blu-ray disc player, and surveillance system camera module applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS565208DDCT 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 and automotive-grade reliability.
The TPS565208DDCT belongs to TI's D-CAP2™ family of easy-to-use synchronous buck regulators, designed specifically for space-constrained consumer and industrial applications demanding fast transient response, minimal external components, and robust protection.
FAQ
What is the maximum continuous output current of the TPS565208DDCT?
The TPS565208DDCT delivers up to 5 A continuous output current in continuous conduction mode (CCM) under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal layout). This rating assumes use of the specified 2.2-µH inductor and ≥40-µF total ceramic output capacitance with low ESR. Derating applies above 85°C ambient or with inadequate copper area.
Does the TPS565208DDCT require external compensation components?
No, the TPS565208DDCT does not require external compensation components. Its D-CAP2™ control architecture uses internal adaptive on-time modulation with ripple injection, enabling stable operation with ceramic or polymer output capacitors without external RC networks - significantly simplifying design and reducing bill-of-materials count.
Can the TPS565208DDCT start up when the output is pre-biased?
Yes, the TPS565208DDCT supports startup from a pre-biased output voltage. When EN is asserted high, the device monitors VFB and delays switching until the internal soft-start reference voltage exceeds the present VFB level - preventing reverse current flow and ensuring monotonic, controlled ramp-up even when the output capacitor is initially charged.
What protection features are integrated into the TPS565208DDCT?
The TPS565208DDCT integrates cycle-by-cycle overcurrent protection (hiccup-mode), non-latching thermal shutdown (172°C), undervoltage lockout (UVLO), output undervoltage protection (UVP), and overvoltage protection (OVP). These features operate autonomously without external circuitry and provide robust fault handling in real-world power systems.
What is the recommended bootstrap capacitor value for the TPS565208DDCT?
Texas Instruments specifies a 0.1-µF ceramic capacitor between VBST and SW pins for the TPS565208DDCT. This capacitor must be placed as close as possible to the pins with short, low-inductance traces. X7R or X5R dielectrics are recommended for stable capacitance across temperature and bias voltage.
TPS565208DDCT 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):
- 0.76V
- Voltage - Output (Max):
- 7V
- Current - Output:
- 5A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS565208DDCT FAQ
1.How can I place an order for TPS565208DDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS565208DDCT 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 TPS565208DDCT reliable?
The price and inventory of TPS565208DDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS565208DDCT is usually 5 days.
3.What payment methods are accepted for TPS565208DDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS565208DDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS565208DDCT?
TPS565208DDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS565208DDCT 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 TPS565208DDCT?
For technical support, including TPS565208DDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS565208DDCT requirements.
6.How does Aetrix verify that TPS565208DDCT is sourced from the original manufacturer or authorized distributors?
All TPS565208DDCT 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 TPS565208DDCT meets industry standards.
7.What is the process for return or replacement of TPS565208DDCT?
All TPS565208DDCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS565208DDCT, 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 TPS565208DDCT part is unused and in its original packaging.
Return procedure for TPS565208DDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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