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Texas Instruments TPS563208DDCR
- Part No.:
- TPS563208DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS563208DDCR.pdf
- Description:
- IC REG BUCK ADJ 3A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,806
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Product details
Overview
TPS563208DDCR from Texas Instruments is a 3A synchronous step-down DC-DC converter in SOT-23-6 (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, features fixed 580kHz switching frequency, continuous conduction mode (FCCM), and integrated 95mΩ high-side / 57mΩ low-side MOSFETs. It serves as a compact, high-efficiency power supply for point-of-load regulation in space-constrained consumer electronics.
For engineers reviewing the TPS563208DDCR datasheet, TPS563208DDCR pinout, TPS563208DDCR application, or TPS563208DDCR equivalent, key selection criteria include FCCM operation vs. Eco-mode alternatives, 1.6mm × 2.9mm SOT-23 thermal performance (RθJA = 92.6°C/W), cycle-by-cycle overcurrent protection, pre-biased soft-start capability, and compatibility with low-ESR ceramic output capacitors without external compensation.
Technical Context
The TPS563208DDCR implements adaptive on-time D-CAP2™ control, combining internal ramp injection with voltage-mode feedback to enable stable operation with ultra-low-ESR ceramic capacitors and eliminate external compensation networks. Its quasi-fixed 580kHz switching frequency remains stable across input voltage (4.5–17V) and load (0–3A), with minimum off-time of 220ns supporting high duty-cycle operation down to ~6% VOUT/VIN.
Functional safety features include non-latching undervoltage lockout (UVLO: 3.3–4.3V), hiccup-mode overcurrent protection (3.3–5.1A threshold), thermal shutdown at 172°C with 37°C hysteresis, and startup from pre-biased output. The device uses internal 1ms soft-start and supports EN-controlled enable/disable with 1.6V logic-high threshold and 600–2400kΩ internal pulldown resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 17V - supports wide-input industrial and consumer rails including 5V, 9V, 12V, and 15V supplies. |
| Output Current | 3A continuous - delivers full rated current with thermal derating per RθJA = 92.6°C/W in standard PCB layout. |
| Switching Frequency | 580kHz - enables compact magnetics and filtering while maintaining >85% efficiency at 1.05V/3A (VIN=12V). |
| Feedback Accuracy | ±2% at 25°C - ensures tight output regulation across line, load, and temperature for precision SoC core supplies. |
| High-Side RDS(on) | 95mΩ at 25°C - minimizes conduction loss in high-duty-cycle applications (e.g., 3.3V out from 5V in). |
| Low-Side RDS(on) | 57mΩ at 25°C - reduces synchronous rectification loss and improves light-load efficiency in FCCM mode. |
| Shutdown Current | <20µA - enables ultra-low-power standby states in battery-backed or always-on systems. |
| Soft-Start Time | 1.0ms fixed - prevents inrush current and output overshoot during power-up, compatible with pre-biased outputs. |
Pinout & Package
TPS563208DDCR is housed in a 6-pin SOT-23-6 (DDC) package measuring 1.6mm × 2.9mm, optimized for high-density PCB layouts and thermal performance via exposed pad (GND-connected) in production variants - though the DDC package shown in TI documentation does not include an exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal ground reference | Common return path for low-side FET source, controller ground, and feedback network - must be connected to single-point ground near VFB divider to minimize noise coupling. |
| SW (Pin 2) | Switch node | Connection between high-side and low-side FETs - requires tight layout with minimal loop area to reduce EMI and voltage ringing. |
| VIN (Pin 3) | Main input supply | Connects to bulk and high-frequency input capacitors - feeds high-side FET drain and internal LDO for biasing. |
| VFB (Pin 4) | Feedback input | Monitors output voltage via resistor divider - 0.768V internal reference enables precise output setting (e.g., 1.05V with 3.74kΩ/10kΩ divider). |
| EN (Pin 5) | Enable control | Active-high logic input (1.6V threshold) with internal 600–2400kΩ pulldown - allows system-level power sequencing and standby control. |
| VBST (Pin 6) | Bootstrap supply | Drives high-side gate via 0.1µF capacitor to SW - critical for proper high-side FET turn-on; capacitor must be placed adjacent to pins 6 and 2. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ control architecture | Enables stable regulation with ceramic output capacitors (20–68µF) without external compensation components - reduces BOM count and layout sensitivity. |
| Continuous Conduction Mode (FCCM) | Maintains fixed 580kHz switching under all load conditions - eliminates audible noise and simplifies EMI filter design compared to pulse-skipping alternatives. |
| Cycle-by-cycle overcurrent protection | Detects valley current during low-side conduction - provides robust short-circuit and overload protection with hiccup recovery (1.2ms on, 10ms off). |
| Pre-biased soft-start | Initiates switching only after internal reference exceeds VFB - prevents reverse current flow into pre-charged output rails, essential for hot-swap and multi-rail systems. |
| Integrated power FETs | 95mΩ high-side + 57mΩ low-side NFETs - eliminates external MOSFETs and drivers, reducing solution size to <100mm² for typical 1.05V/3A designs. |
| Non-latching protections | UVLO (3.3–4.3V), UVP (65% VOUT), and TSD (172°C) - automatically recover after fault clearance without requiring EN toggle or system reset. |
Applications
| Digital TV Power Supply | Networking Home Terminal |
|---|---|
Use Scenario: Powers SoC core voltage (1.05V/3A) and DDR memory termination (1.5V/2A) in 4K UHD TV mainboards with strict size constraints. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering tightly regulated, low-noise DC from 12V intermediate bus. Use Value: D-CAP2™ fast transient response (<10µs recovery from 1.5A load step) maintains SoC stability during video frame bursts without oversized output capacitance. |
Use Scenario: Supplies FPGA I/O banks (1.8V/2A) and Ethernet PHY (3.3V/1.5A) in compact residential gateways with limited board area. IC Role / Device Role / Timing Role: Compact, self-contained buck converter replacing discrete controller + external FET solutions. Use Value: SOT-23-6 footprint and integrated FETs reduce total solution size by >40% versus comparable controllers, enabling dual-rail designs in ≤25mm² area. |
| Digital Set Top Box (STB) | Surveillance Camera System |
Use Scenario: Generates 1.2V core voltage for ARM-based media processors in fanless STB enclosures requiring silent operation. IC Role / Device Role / Timing Role: High-efficiency, fixed-frequency buck regulator operating continuously under variable video decode loads. Use Value: FCCM mode eliminates low-frequency switching artifacts that could interfere with HDMI audio/video signals, ensuring clean EMI profile. |
Use Scenario: Powers image sensor (1.8V/0.8A), ISP (1.2V/1.2A), and Wi-Fi module (3.3V/0.5A) in IP camera modules with ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Thermally robust DC-DC stage converting 12V PoE-derived input to multiple low-voltage rails. Use Value: RθJA = 92.6°C/W and 125°C junction rating allow full 3A operation with minimal copper pour, simplifying thermal design in sealed housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS563201DDCR | Pulse-skip (Eco-mode) operation instead of FCCM; identical pinout, package, and 3A rating. | Better light-load efficiency (<20µA IQ) but introduces variable-frequency operation and potential acoustic noise. | Select TPS563201DDCR only when >85% efficiency below 100mA load is critical and EMI filtering can accommodate frequency variation. |
| MP2332HGTL-Z | 4.5–28V input, 3A, 500kHz, similar SOT-563 package; lacks pre-biased soft-start and D-CAP2™ transient performance. | Wider input range suits 24V industrial inputs; lower switching frequency eases EMI compliance but increases inductor size. | Choose MP2332HGTL-Z for 24V systems or where TI's WEBENCH® design ecosystem is not required. |
Compared with TPS563208DDCR, TPS563201DDCR trades fixed-frequency predictability for superior light-load efficiency, while MP2332HGTL-Z extends input voltage range at the cost of transient response and startup flexibility - making TPS563208DDCR optimal for noise-sensitive, thermally constrained 12V consumer applications requiring consistent 580kHz operation.
Availability
TPS563208DDCR is available at Aetrix Electronics and suitable for digital TV power supply, networking home terminal, and digital set top box (STB) applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS563208DDCR 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-reliability power conversion ICs.
The TPS56320x family was designed specifically for space-constrained, cost-sensitive consumer electronics requiring simple, efficient, and robust point-of-load regulation - emphasizing integration, ease of use, and compatibility with ceramic capacitors.
FAQ
What is the recommended input capacitor configuration for TPS563208DDCR?
TI recommends a minimum 10µF ceramic input capacitor (X5R/X7R, 25V rating) placed close to VIN and GND pins, plus an optional 0.1µF high-frequency ceramic capacitor from VIN to GND. For systems with high input ripple or long traces, add a bulk electrolytic or polymer capacitor (22–100µF). The TPS563208DDCR input stage is designed to operate reliably with this decoupling scheme across its full 4.5–17V input range.
Does TPS563208DDCR support output voltages below 1.0V?
Yes, TPS563208DDCR supports output voltages as low as 0.76V using the internal 0.768V feedback reference and an external resistor divider. For example, a 1.05V output uses a 3.74kΩ/10kΩ divider. Designers must ensure feedback resistors are ≤100kΩ total to limit error from VFB input current (±0.1µA), and select 1% tolerance or better resistors for accuracy.
How does the hiccup-mode overcurrent protection work in TPS563208DDCR?
When TPS563208DDCR detects overcurrent (3.3–5.1A threshold), it enters hiccup mode: shutting down for 10ms, then attempting restart. If fault persists, it repeats the cycle. This limits average power dissipation during sustained shorts. Unlike latch-off protection, hiccup mode enables automatic recovery once the overload is removed - a key safety feature for unattended consumer devices using TPS563208DDCR.
Can TPS563208DDCR start up with a pre-biased output voltage?
Yes, TPS563208DDCR supports pre-biased soft-start: when enabled, it monitors VFB and delays switching until the internal reference voltage ramps above the existing output voltage. This prevents reverse current flow into the output capacitor and avoids destabilizing other powered rails sharing the same output node - a critical capability in multi-rail systems using TPS563208DDCR.
What thermal performance can be expected from TPS563208DDCR in a standard 2-layer PCB layout?
In a standard 2-layer PCB with 1oz copper and minimal thermal relief, TPS563208DDCR exhibits RθJA = 92.6°C/W. At 3A load and 12V input, typical power dissipation is ~0.6W, resulting in ~55°C junction-to-ambient rise - well within the –40°C to 125°C operating range. Adding 200mm² of 1oz copper connected to GND improves thermal performance significantly, as confirmed in TI's TPS563208DDCR EVM test data.
TPS563208DDCR 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
TPS563208DDCR FAQ
1.How can I place an order for TPS563208DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS563208DDCR 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 TPS563208DDCR reliable?
The price and inventory of TPS563208DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS563208DDCR is usually 5 days.
3.What payment methods are accepted for TPS563208DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS563208DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS563208DDCR?
TPS563208DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS563208DDCR 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 TPS563208DDCR?
For technical support, including TPS563208DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS563208DDCR requirements.
6.How does Aetrix verify that TPS563208DDCR is sourced from the original manufacturer or authorized distributors?
All TPS563208DDCR 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 TPS563208DDCR meets industry standards.
7.What is the process for return or replacement of TPS563208DDCR?
All TPS563208DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS563208DDCR, 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 TPS563208DDCR part is unused and in its original packaging.
Return procedure for TPS563208DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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