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Texas Instruments TPS565201DDCT
- Part No.:
- TPS565201DDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS565201DDCT.pdf
- Description:
- IC REG BUCK ADJ 5A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:844
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Product details
Overview
TPS565201DDCT from Texas Instruments is a 5-A synchronous step-down DC-DC converter with D-CAP2™ control, integrated 31-mΩ high-side and 16-mΩ low-side MOSFETs, 4.5-V to 17-V input range, 0.76-V to 7-V output range, and 500-kHz fixed switching frequency. It delivers stable 1.05-V/5-A power for digital TV SoC core rails.
For engineers reviewing the TPS565201DDCT datasheet, TPS565201DDCT pinout, TPS565201DDCT application, or TPS565201DDCT equivalent, key selection factors include Eco-mode™ light-load efficiency, pre-biased startup capability, cycle-by-cycle current limiting, hiccup-mode OCP, and 1% VFB accuracy across –40°C to 125°C junction temperature.
Technical Context
The TPS565201DDCT implements adaptive on-time D-CAP2™ control with internal ripple injection, enabling stable operation with ceramic or polymer output capacitors without external compensation. Its control loop maintains quasi-fixed 500-kHz frequency across input voltage (4.5–17 V) and load (0.001–5 A), while supporting fast transient response via direct output-voltage sensing.
It operates in continuous conduction mode (CCM) up to full 5-A load, transitions to pulse-skipping Eco-mode™ below ~1 A, and enters shutdown with ≤1 µA quiescent current when EN is low. Protection includes non-latching UVLO (4.0–4.3 V), thermal shutdown (172°C), and valley-current-based overcurrent detection with hiccup recovery (14.9 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 5 A maximum continuous; supports full-rated load without derating at TJ ≤ 125°C with proper PCB thermal design. |
| Input Voltage Range | 4.5 V to 17 V; enables single-rail operation from 5-V, 9-V, 12-V, or 15-V intermediate bus supplies. |
| Output Voltage Range | 0.76 V to 7 V; set externally via resistor divider; 1% VFB accuracy ensures ±1% output regulation tolerance. |
| Switching Frequency | 500 kHz nominal; fixed-frequency CCM operation simplifies EMI filtering and inductor selection. |
| Efficiency at 1 A | Up to 92% at VIN = 12 V, VOUT = 1.05 V; enabled by low RDS(on) FETs (31 mΩ HS / 16 mΩ LS) and Eco-mode™. |
| Shutdown Current | ≤1 µA; allows ultra-low-power system standby states without compromising wake-up latency. |
| Thermal Protection | Hiccup-mode thermal shutdown at 172°C with 38°C hysteresis; prevents permanent damage during sustained overload or poor heatsinking. |
Pinout & Package
The TPS565201DDCT is housed in a thermally enhanced 6-pin SOT-23 (DDC) package measuring 1.6 mm × 2.9 mm, optimized for high-power density and low-profile applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Power and signal ground reference | Common return path for low-side FET source, controller ground, and Kelvin feedback connection point. |
| SW | Switch node | Connection between high-side and low-side FETs; carries high di/dt switching current; requires short, wide PCB trace. |
| VIN | Main input supply | Drain of high-side FET; accepts 4.5–17 V; must be decoupled with ≥10 µF ceramic capacitor near pin. |
| VFB | Feedback input | Senses output voltage via resistor divider; 760 mV threshold; requires Kelvin connection to GND to reject noise. |
| EN | Enable control | Active-high logic input; 1.6 V threshold; internal 245 kΩ pull-down enables default-disable behavior. |
| VBST | Bootstrap supply | Provides gate drive voltage for high-side FET; requires 0.1 µF ceramic capacitor between VBST and SW pins. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ Control | Eliminates external compensation components and supports ceramic/polymer output capacitors with zero-ESR stability. |
| Eco-mode™ Operation | Maintains >85% efficiency at 10 mA load by skipping pulses, reducing switching losses during light-load standby. |
| Pre-Biased Startup | Allows safe ramp-up into regulation when output capacitor is pre-charged, preventing reverse current flow. |
| Cycle-by-Cycle Current Limit | Monitors low-side FET VDS during off-time for accurate valley-current detection; triggers hiccup-mode OCP at 5.3–6.7 A. |
| Integrated Power FETs | 31-mΩ high-side and 16-mΩ low-side NFETs reduce BOM count and improve thermal performance vs discrete solutions. |
Applications
| Digital TV Power Supply | High Definition Blu-ray™ Disc Player |
|---|---|
Use Scenario: Powers SoC core voltage (1.05 V/5 A) and memory I/O rails in 4K UHD television platforms. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated, low-noise DC power to processor cores under dynamic load transients. Use Value: D-CAP2™ fast transient response limits output voltage deviation to ±5% during 1-A/µs load steps, ensuring system stability. | Use Scenario: Supplies 1.2-V/3-A and 1.8-V/2-A rails to video decoding ASIC and HDMI transmitter in Blu-ray players. IC Role / Device Role / Timing Role: Dual-output implementation using two TPS565201DDCT devices for independent, high-efficiency rail generation. Use Value: Eco-mode™ extends battery-free standby time in always-on media hubs while maintaining <1 µA shutdown current. |
| Networking Home Terminal | Surveillance System Camera Module |
Use Scenario: Provides 3.3-V/2-A power to Ethernet PHY, Wi-Fi SoC, and flash memory in residential gateways and ONTs. IC Role / Device Role / Timing Role: Intermediate bus converter stepping down 12-V PoE-derived input to clean 3.3-V logic supply. Use Value: 500-kHz fixed frequency enables predictable EMI filter design; integrated FETs reduce solution size by >30% vs controller + external MOSFETs. | Use Scenario: Delivers 5-V/1-A power to CMOS image sensor and ISP in IP security cameras operating in wide ambient temperature ranges. IC Role / Device Role / Timing Role: Main power stage supporting -40°C to 125°C junction operation with thermal shutdown protection. Use Value: Non-latching UVLO and 172°C thermal shutdown ensure reliable operation during outdoor thermal cycling and brownout events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS564201DDCT | 4-A rated (vs 5-A); identical D-CAP2™ control, package, and pinout; same 4.5–17-V input range. | Suitable for lower-current applications where 4-A headroom suffices; shares layout compatibility but requires validation at peak load. | Select when full 5-A capability is unnecessary and cost optimization is prioritized over margin. |
| MP2359DJ-LF-Z | 5-A rated; 4.5–28-V input; external compensation required; no pre-biased startup or Eco-mode™. | Better suited for higher-input industrial systems; lacks D-CAP2™ simplicity and light-load efficiency features. | Choose only if wider input range (up to 28 V) is mandatory and design team has compensation expertise. |
Compared with TPS565201DDCT, TPS564201DDCT offers pin-compatible downsizing for 4-A use cases, while MP2359DJ-LF-Z trades ease-of-use and efficiency for extended input voltage range-neither is a drop-in replacement without circuit review.
Availability
TPS565201DDCT is available at Aetrix Electronics and suitable for digital TV power supply, networking home terminal, and surveillance system camera module applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for TPS565201DDCT 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 company specializing in analog, embedded processing, and power management ICs, with leadership in high-efficiency DC-DC conversion technology.
The TPS565201DDCT belongs to TI's D-CAP2™ synchronous buck regulator product line, designed specifically for space-constrained consumer and industrial applications demanding high integration, fast transient response, and ultra-low standby power.
FAQ
What is the maximum output current capability of the TPS565201DDCT?
The TPS565201DDCT delivers up to 5 A of continuous output current under recommended operating conditions (TJ ≤ 125°C, VIN = 12 V, VOUT = 1.05 V). Its integrated 31-mΩ high-side and 16-mΩ low-side MOSFETs enable this rating without external power stages. Derating is required above 125°C junction temperature per the thermal characteristics table in the datasheet. The TPS565201DDCT achieves full 5-A capability in compact 1.6 mm × 2.9 mm SOT-23 packaging.
Does the TPS565201DDCT support startup into a pre-biased output?
Yes, the TPS565201DDCT supports startup into a pre-biased output voltage. When the EN pin is asserted high while the VFB pin senses a voltage above the internal reference (760 mV), the device delays switching until the internal soft-start ramp exceeds the sensed VFB level. This prevents reverse current flow through the low-side FET and ensures controlled, monotonic ramp-up. This feature is confirmed in Section 7.3.3 of the TPS565201DDCT datasheet and validated in Figure 27 (startup relative to EN).
What protection features are built into the TPS565201DDCT?
The TPS565201DDCT integrates cycle-by-cycle overcurrent protection with hiccup-mode recovery, non-latching undervoltage lockout (UVLO) with 4.0–4.3 V turn-on threshold, non-latching output undervoltage protection (UVP), and thermal shutdown at 172°C with 38°C hysteresis. All protections are hardware-based and operate independently of the control loop. The TPS565201DDCT does not latch off permanently-hiccup-mode OCP and thermal shutdown automatically retry after fixed delay periods (14.9 ms and 1.8 ms respectively), ensuring robust fault recovery in real-world systems.
Can the TPS565201DDCT operate efficiently at very light loads?
Yes, the TPS565201DDCT maintains high efficiency at light loads via Eco-mode™ pulse-skipping operation. Below ~1 A, it transitions from continuous conduction mode (CCM) to discontinuous conduction mode (DCM), reducing switching frequency proportionally to load current. At 10 mA output, typical efficiency exceeds 85% with VIN = 12 V and VOUT = 1.05 V. This behavior is documented in Figure 18 (efficiency vs. output current) and Section 7.3.2 of the TPS565201DDCT datasheet, enabling extended battery-free standby in always-on consumer electronics.
What is the recommended bootstrap capacitor for the TPS565201DDCT?
The TPS565201DDCT requires a 0.1-µF ceramic capacitor connected between the VBST and SW pins. Texas Instruments specifies X7R or better dielectric with 10-V or higher voltage rating to withstand the 6.5-V maximum VBST-to-SW differential. This capacitor must be placed as close as possible to the VBST and SW pins with minimal trace length to ensure reliable high-side gate drive. The TPS565201DDCT datasheet explicitly prohibits tantalum or electrolytic types due to ESR and reliability concerns in this critical path.
TPS565201DDCT 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):
- 0.6V
- 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
TPS565201DDCT FAQ
1.How can I place an order for TPS565201DDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS565201DDCT 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 TPS565201DDCT reliable?
The price and inventory of TPS565201DDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS565201DDCT is usually 5 days.
3.What payment methods are accepted for TPS565201DDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS565201DDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS565201DDCT?
TPS565201DDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS565201DDCT 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 TPS565201DDCT?
For technical support, including TPS565201DDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS565201DDCT requirements.
6.How does Aetrix verify that TPS565201DDCT is sourced from the original manufacturer or authorized distributors?
All TPS565201DDCT 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 TPS565201DDCT meets industry standards.
7.What is the process for return or replacement of TPS565201DDCT?
All TPS565201DDCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS565201DDCT, 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 TPS565201DDCT part is unused and in its original packaging.
Return procedure for TPS565201DDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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