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Texas Instruments TPS563209DDCR
- Part No.:
- TPS563209DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS563209DDCR.pdf
- Description:
- IC REG BUCK ADJ 3A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,587
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Product details
Overview
TPS563209 from Texas Instruments is a 3-A synchronous step-down DC/DC converter in a 6-pin SOT-23 (DDC) package, featuring D-CAP2™ control mode, 4.5 V to 17 V input range, 0.76 V to 7 V adjustable output, and 650 kHz fixed switching frequency. It integrates 68-mΩ high-side and 39-mΩ low-side MOSFETs and delivers fast transient response for digital TV and STB power rails.
For engineers reviewing the TPS563209 datasheet, TPS563209 pinout, TPS563209 application, or TPS563209 equivalent, key selection considerations include its cycle-by-cycle over-current protection, 1% VFB accuracy at 25°C, startup from pre-biased output, hiccup-mode UVP, and thermal shutdown at 155°C - all critical for compact, high-reliability point-of-load designs.
Technical Context
The TPS563209 employs adaptive on-time D-CAP2™ control, combining internal compensation with pseudo-fixed 650 kHz operation across input and load variations. Its valley-current sensing enables cycle-by-cycle OCL with temperature-compensated low-side FET RDS(on) monitoring.
It operates exclusively in forced continuous conduction mode (CCM), eliminating light-load efficiency droop and reducing output ripple versus discontinuous mode. The integrated bootstrap circuit requires only a 0.1 µF ceramic capacitor between VBST and SW, and supports startup into pre-biased outputs without reverse current flow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 3 A continuous - supports mid-power SoC core rails and FPGA I/O banks without external current sharing. |
| Input voltage range | 4.5 V to 17 V - compatible with 5 V, 12 V, and 15 V intermediate bus architectures. |
| Feedback voltage accuracy | ±1% at 25°C - ensures tight regulation of low-voltage outputs (e.g., 1.05 V, 1.2 V) under thermal drift. |
| Switching frequency | 650 kHz - balances EMI performance, inductor size, and efficiency for space-constrained layouts. |
| RDS(on) (HS/Low-Side) | 68 mΩ / 39 mΩ - minimizes conduction loss at full load, enabling >90% peak efficiency at 12 VIN/3.3 VOUT. |
| Soft-start time | 1.0 ms (fixed) - prevents inrush current during power-up and ensures controlled ramp to regulation. |
| Shutdown current | <10 µA - supports ultra-low quiescent power in standby or battery-backed systems. |
Pinout & Package
SOT-23-6 (DDC) package, 1.6 mm × 2.9 mm body size, exposed pad not present, rated for –40°C to 150°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal ground reference | Common return for low-side FET source and controller logic; feedback ground must tie here at single point to avoid noise coupling. |
| SW (Pin 2) | Switch node | Connection between high- and low-side FETs; routes high di/dt switching waveform - requires tight layout to minimize EMI and ringing. |
| VIN (Pin 3) | Main input supply | Drain of high-side FET; accepts 4.5–17 V; requires local 10 µF+ ceramic decoupling adjacent to pin. |
| VFB (Pin 4) | Feedback input | Monitors output via resistor divider; 0.765 V reference enables precise output setting; sensitive to noise - route away from SW and GND loops. |
| EN (Pin 5) | Enable control | Active-high logic input (1.6 V threshold); internal pull-down allows default disable; supports sequencing and power gating. |
| VBST (Pin 6) | Bootstrap supply | Provides gate drive voltage for high-side FET; must connect 0.1 µF ceramic capacitor directly to SW to sustain duty cycles >50%. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ control mode | Enables stable operation with zero-ESR ceramic capacitors and eliminates external compensation components - reduces BOM count and layout sensitivity. |
| Cycle-by-cycle over-current limit | Valley-current detection with temperature compensation ensures accurate current limiting across temperature, preventing FET overstress during short-circuit events. |
| Hiccup-mode under-voltage protection | Shuts down and auto-restarts after ~12 ms upon VOUT falling below 65% of target - protects downstream loads while enabling self-recovery without system reset. |
| Pre-biased output startup | Allows safe enablement when output capacitor is already charged - avoids reverse current flow and prevents output voltage collapse or overshoot. |
| Non-latch OVP and UVLO | 125% VFB overvoltage detection and 3.75 V ±0.3 V UVLO provide fault containment without latching - supports robust hot-swap and brownout recovery. |
Applications
| Digital TV Power Supply | High Definition Blu-ray Disc™ Player |
|---|---|
|
Use Scenario: Powers SoC core, DDR memory, and video processing ICs from 12 V intermediate bus. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 1.05 V/3 A with <20 mVpp ripple and sub-10 µs transient recovery. Use Value: D-CAP2™'s fast transient response reduces required output capacitance by up to 40% vs conventional PWM, saving board area and cost. |
Use Scenario: Supplies HDMI PHY, audio DAC, and laser driver subsystems requiring clean, sequenced 3.3 V and 1.8 V rails. IC Role / Device Role / Timing Role: Dual-rail generation using two TPS563209s with independent EN control for power sequencing and fault isolation. Use Value: 1% VFB accuracy and hiccup-mode UVP ensure stable operation during disc spin-up surges and thermal throttling events. |
| Networking Home Terminal | Digital Set Top Box (STB) |
|
Use Scenario: Regulates CPU and Ethernet PHY voltages in cable/fiber gateways operating 24/7 in thermally constrained enclosures. IC Role / Device Role / Timing Role: High-efficiency 5 V → 1.2 V conversion for ARM-based network processors, with thermal shutdown at 155°C. Use Value: Forced CCM operation maintains low output ripple at light loads, avoiding audible noise from ceramic capacitor piezoelectric effects. |
Use Scenario: Delivers 3.3 V/2 A and 1.2 V/3 A to demodulator, tuner, and conditional access modules in consumer STBs. IC Role / Device Role / Timing Role: Compact, single-chip solution replacing discrete buck controllers + external MOSFETs - simplifies compliance testing and qualification. Use Value: 6-pin SOT-23 footprint enables placement directly next to SoC, minimizing trace inductance and improving PSRR above 1 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS562209 | 2-A rating, higher RDS(on) (122 mΩ HS / 72 mΩ LS), identical pinout and control architecture. | Lower output current capability limits use to sub-2 A loads; suitable where thermal margin or cost is prioritized over headroom. | Select TPS562209 when design load is ≤1.8 A and PCB area or BOM cost is critical - same layout, no requalification needed. |
| MP2332HGTL-Z | 3-A, 4.5–28 V input, 500 kHz, but uses current-mode control and requires external compensation; different pinout (8-pin QFN). | Lacks pre-biased startup and hiccup-mode UVP; offers wider VIN but demands more design effort for stability and layout. | Choose MP2332HGTL-Z only if input exceeds 17 V or if existing design uses current-mode topology - not drop-in compatible. |
Compared with TPS562209, the TPS563209 provides 50% higher current capacity and lower conduction losses, while MP2332HGTL-Z trades integration and ease-of-use for extended input range and flexibility - making TPS563209 optimal for compact, high-yield 12 V bus applications.
Availability
TPS563209 is available at Aetrix Electronics and suitable for digital TV power supplies, HD Blu-ray players, and networking home terminals requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS563209 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 TPS56x209 product line delivers highly integrated, easy-to-use synchronous buck regulators targeting space-constrained consumer and industrial power applications - emphasizing minimal external components, fast transient response, and robust protection.
FAQ
What is the maximum recommended output current for TPS563209 under continuous operation?
The TPS563209 is rated for 3 A continuous output current under recommended operating conditions (TJ ≤ 150°C, proper PCB thermal relief). Derating is required above 85°C ambient; typical full-load operation at 12 VIN/3.3 VOUT sustains 3 A with ≤40°C temperature rise on 2 oz copper with 2 cm² thermal pad area. Always verify junction temperature using RθJA = 87.9°C/W from datasheet Section 6.4.
Does TPS563209 support startup into a pre-biased output voltage?
Yes, the TPS563209 supports pre-biased startup: when EN is asserted, the device monitors VFB and delays switching until the internal reference voltage exceeds the existing VFB level. This prevents reverse current flow through the low-side FET and avoids output voltage collapse or overshoot - a verified behavior documented in Section 7.3.2 of the SLVSCM5A datasheet.
What is the purpose of the VBST pin on TPS563209, and what capacitor value is required?
The VBST pin supplies gate drive voltage for the high-side MOSFET. A 0.1 µF ceramic capacitor must be placed directly between VBST and SW pins to form the bootstrap reservoir. This capacitor charges during low-side conduction and enables high-side turn-on; using X7R or better dielectric with ≤2 mm trace length is mandatory for reliable >50% duty cycle operation.
How does the D-CAP2™ control mode in TPS563209 differ from standard voltage-mode PWM?
D-CAP2™ uses adaptive on-time control with internal slope compensation, enabling stable operation with ceramic output capacitors without external compensation. Unlike voltage-mode PWM, it achieves pseudo-fixed 650 kHz frequency while delivering faster transient response (<10 µs recovery for 1-A load step) and eliminating phase-margin tuning - verified in Figures 28 and 33 of the TPS563209 datasheet.
What protection features are integrated into TPS563209?
The TPS563209 integrates cycle-by-cycle over-current limit (OCL), hiccup-mode under-voltage protection (UVP), non-latch over-voltage protection (OVP), thermal shutdown (155°C), and UVLO (3.75 V ±0.3 V). All protections are fully autonomous - no external components required - and have been validated per TI's production test flow in Section 6.5 of SLVSCM5A.
TPS563209DDCR 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:
- 3A
- Frequency - Switching:
- 650kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS563209DDCR FAQ
1.How can I place an order for TPS563209DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS563209DDCR 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 TPS563209DDCR reliable?
The price and inventory of TPS563209DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS563209DDCR is usually 5 days.
3.What payment methods are accepted for TPS563209DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS563209DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS563209DDCR?
TPS563209DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS563209DDCR 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 TPS563209DDCR?
For technical support, including TPS563209DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS563209DDCR requirements.
6.How does Aetrix verify that TPS563209DDCR is sourced from the original manufacturer or authorized distributors?
All TPS563209DDCR 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 TPS563209DDCR meets industry standards.
7.What is the process for return or replacement of TPS563209DDCR?
All TPS563209DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS563209DDCR, 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 TPS563209DDCR part is unused and in its original packaging.
Return procedure for TPS563209DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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