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Texas Instruments TPS562208DDCT
- Part No.:
- TPS562208DDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS562208DDCT.pdf
- Description:
- IC REG BUCK ADJ 2A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:13,316
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Product details
Overview
TPS562208DDCT from Texas Instruments is a 2A synchronous step-down DC/DC converter in a 6-pin SOT-23 (DDC) package, designed for fixed-frequency continuous conduction mode (FCCM) operation. It delivers regulated output voltages from 0.76V to 7V across a 4.5V–17V input range, features D-CAP2™ control for fast transient response with ceramic output capacitors, and integrates 140mΩ high-side and 84mΩ low-side MOSFETs - enabling compact power supplies in digital TV, STB, and surveillance systems.
For engineers reviewing the TPS562208DDCT datasheet, TPS562208DDCT pinout, TPS562208DDCT application, or TPS562208DDCT equivalent, key selection criteria include its FCCM mode (vs. TPS562201's pulse-skip), 580kHz switching frequency, 2% VFB accuracy at 25°C, 1.0ms internal soft-start, and cycle-by-cycle overcurrent protection with hiccup-mode recovery - all validated for –40°C to 125°C junction operation.
Technical Context
The TPS562208DDCT employs Texas Instruments' D-CAP2™ adaptive on-time control architecture, which eliminates external compensation by embedding internal ramp generation and pseudo-fixed-frequency operation. Its control loop directly senses output voltage ripple via the VFB node and adjusts on-time based on VIN and VOUT to maintain stability with ultra-low-ESR ceramic capacitors.
This device operates exclusively in continuous conduction mode (FCCM), distinguishing it from the TPS562201 (ECO-mode). It supports prebiased start-up, features non-latching undervoltage lockout (UVLO) with 3.8V turn-on threshold, and implements temperature-compensated valley-current sensing for cycle-by-cycle overcurrent limiting - with hiccup-mode shutdown at ≥2.4A typical current limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 17V - supports wide industrial and consumer DC bus rails including 5V, 9V, 12V, and 15V inputs without external regulation. |
| Output Voltage Range | 0.76V to 7V - set via external resistor divider; enables core logic (1.05V, 1.8V), I/O (3.3V), and analog (5V) rail generation. |
| Switching Frequency | 580kHz - fixed nominal frequency simplifies EMI filtering and inductor selection; stable across input and load variations. |
| Integrated FETs | 140mΩ HS / 84mΩ LS - enables full 2A continuous output without external switches; reduces BOM count and layout area. |
| VFB Accuracy | ±2% at 25°C - ensures tight output regulation under nominal conditions; critical for sensitive digital loads like SoCs and FPGAs. |
| Soft-Start Time | 1.0ms internal - prevents inrush current and output overshoot during power-up; no external capacitor required. |
| Shutdown Current | <20µA - minimizes standby power loss in always-on subsystems such as remote control receivers or security sensors. |
Pinout & Package
TPS562208DDCT is housed in a 6-pin SOT-23 (DDC) package measuring 1.6mm × 2.9mm, optimized for space-constrained PCB layouts and thermal performance with RθJA = 90.8°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal ground reference | Common return path for low-side FET source and controller ground; VFB must connect to this pin at single-point to avoid noise coupling. |
| SW (Pin 2) | Switch node | Connection between high-side and low-side FETs; carries high di/dt switching waveform - requires tight layout and Kelvin connection to inductor. |
| VIN (Pin 3) | Main input supply | Drain terminal of high-side FET; accepts 4.5V–17V input; requires local 10µF ceramic decoupling adjacent to pin. |
| VFB (Pin 4) | Feedback input | Senses output voltage via resistor divider; 0.768V internal reference enables precise output setting; ±0.1µA input bias minimizes divider error. |
| EN (Pin 5) | Enable control | Active-high logic input (1.6V threshold); pulled high internally via ~1.5MΩ resistor - allows direct MCU GPIO control or RC delay sequencing. |
| VBST (Pin 6) | Bootstrap supply | Provides gate drive voltage for high-side FET; requires 0.1µF ceramic capacitor between VBST and SW - critical for reliable high-side turn-on. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ Control Scheme | Enables stable operation with zero-ESR ceramic capacitors without external compensation components - reduces design iteration time and improves transient response. |
| FCCM Operation Mode | Guarantees fixed-frequency switching across full load range - simplifies EMI filter design and avoids audible noise in consumer audio/video applications. |
| Cycle-by-Cycle Overcurrent Protection | Monitors low-side FET VDS during off-time with temperature compensation - provides accurate, repeatable current limiting without sense resistors. |
| Hiccup-Mode Fault Recovery | Shuts down for 10ms after overcurrent or thermal fault, then auto-restarts - protects downstream circuitry while enabling self-recovery in intermittent fault conditions. |
| Prebiased Output Start-Up | Initiates switching only after internal reference exceeds VFB - prevents reverse current flow into precharged outputs, essential for hot-swap and multi-rail sequencing. |
Applications
| Digital TV Power Supply | Surveillance Camera System |
|---|---|
Use Scenario: Powers SoC, DDR memory, and video processing ICs in 4K UHD television platforms requiring multiple tightly regulated rails. IC Role / Device Role / Timing Role: Primary 1.05V/1.8V/3.3V point-of-load regulator delivering up to 2A per rail with <±2% regulation and sub-50mV load transient deviation. Use Value: D-CAP2™ fast transient response reduces required output capacitance by up to 40% versus voltage-mode controllers, shrinking board area and cost. |
Use Scenario: Supplies image sensor, ISP, and network interface in IP-based security cameras operating in wide ambient temperatures (–20°C to 60°C). IC Role / Device Role / Timing Role: Main 3.3V system rail regulator with hiccup-mode OCP and thermal shutdown - maintains reliability during extended outdoor operation. Use Value: FCCM mode ensures consistent 580kHz switching frequency, avoiding beat frequencies with camera pixel clocks and reducing conducted EMI. |
| Digital Set-Top Box (STB) | Networking Home Terminal |
Use Scenario: Generates 1.2V CPU core and 1.8V memory rails in cable/satellite STBs where standby power consumption and thermal density are critical. IC Role / Device Role / Timing Role: High-efficiency 2A buck converter operating from 12V intermediate bus; supports deep sleep modes with <20µA shutdown current. Use Value: Integrated 140mΩ/84mΩ FETs achieve >90% peak efficiency at 1A, reducing heatsink requirements and improving system MTBF. |
Use Scenario: Powers Ethernet PHY, Wi-Fi SoC, and USB controller in residential gateways and mesh routers with strict thermal and size constraints. IC Role / Device Role / Timing Role: Compact 1.6mm × 2.9mm SOT-23 regulator delivering 5V or 3.3V from 12V input; supports prebias start-up during firmware update sequences. Use Value: 1.0ms internal soft-start eliminates output voltage overshoot during hot-plug events, preventing latch-up in connected peripherals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS562201DDCT | Pulse-skip (Eco-mode) vs. FCCM; identical pinout, package, and VFB reference; 120–200µA operating current vs. 350–500µA for TPS562208. | Better light-load efficiency below 100mA; unsuitable where fixed-frequency EMI control is mandatory. | Select TPS562201DDCT when optimizing for battery-backed or always-on standby power; choose TPS562208DDCT for deterministic switching in noise-sensitive systems. |
| MP2307DN-LF-Z | Monolithic 2A buck with 4.5–23V input; 340kHz fixed frequency; no D-CAP2 - requires external compensation; ±3% VFB accuracy. | Larger solution size due to external compensation network; lower light-load efficiency; wider input range but less precision. | Use MP2307DN-LF-Z only if input exceeds 17V or cost is primary driver; TPS562208DDCT offers superior regulation accuracy, smaller footprint, and faster transient response. |
Compared with TPS562201DDCT and MP2307DN-LF-Z, the TPS562208DDCT uniquely combines FCCM operation, D-CAP2™ zero-compensation control, and 2% VFB accuracy in a 1.6mm × 2.9mm SOT-23 - making it optimal for space-constrained, noise-sensitive, and precision-regulated applications where consistent switching behavior is required.
Availability
TPS562208DDCT is available at Aetrix Electronics and suitable for digital TV power supplies, surveillance camera systems, and networking home terminals requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS562208DDCT 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 TPS56220x family was designed specifically for compact, high-efficiency point-of-load DC/DC conversion in consumer electronics - emphasizing minimal external components, fast transient response, and robust protection in thermally constrained environments.
FAQ
What is the switching frequency of the TPS562208DDCT and how stable is it across operating conditions?
The TPS562208DDCT operates at a nominal switching frequency of 580kHz. This frequency remains stable across input voltages from 4.5V to 17V and output loads from 0A to 2A, as confirmed in Figure 5-7 and Section 5.5 of the datasheet. Unlike adaptive-frequency converters, its FCCM mode ensures predictable EMI behavior and simplifies filter design - critical for compliance in consumer audio/video equipment.
Does the TPS562208DDCT support prebiased output start-up, and how does it behave during this condition?
Yes, the TPS562208DDCT supports prebiased output start-up. When the output capacitor is precharged, the device delays switching until the internal soft-start reference voltage exceeds the feedback voltage (VFB). This prevents reverse current flow through the low-side FET and avoids output voltage collapse - a key requirement in hot-swap and multi-rail power sequencing applications.
What are the absolute maximum ratings for VBST and how should the bootstrap capacitor be implemented?
The absolute maximum rating for VBST is 25V (DC) and 27V for 10ns transients, with a maximum differential voltage of 6V relative to SW. A 0.1µF ceramic capacitor must be placed directly between VBST and SW pins - TI recommends X7R or better dielectric with low ESL. This capacitor sustains high-side gate drive during each switching cycle and must be located within 2mm of the pins.
How does the overcurrent protection work in the TPS562208DDCT, and what happens during a sustained overload?
The TPS562208DDCT uses cycle-by-cycle valley-current detection on the low-side FET, with temperature-compensated VDS sensing. During overload, it enters hiccup mode: shuts down for 10ms after detecting current >2.4A (typical), then attempts automatic restart. This protects both the IC and downstream circuitry while allowing recovery once the fault clears - unlike latch-off schemes requiring manual reset.
Can the TPS562208DDCT be used with ceramic output capacitors, and what is the minimum recommended value?
Yes - the D-CAP2™ control architecture is explicitly designed for ceramic and other ultra-low-ESR capacitors. For 1.05V–3.3V outputs, TI recommends 20µF to 68µF total output capacitance (e.g., two parallel 22µF X5R 0805s). Ceramic caps eliminate ESR-related ripple and enable the fast transient response that defines the TPS562208DDCT's performance advantage over traditional voltage-mode regulators.
TPS562208DDCT 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:
- 2A
- 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
TPS562208DDCT FAQ
1.How can I place an order for TPS562208DDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS562208DDCT 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 TPS562208DDCT reliable?
The price and inventory of TPS562208DDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS562208DDCT is usually 5 days.
3.What payment methods are accepted for TPS562208DDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS562208DDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS562208DDCT?
TPS562208DDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS562208DDCT 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 TPS562208DDCT?
For technical support, including TPS562208DDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS562208DDCT requirements.
6.How does Aetrix verify that TPS562208DDCT is sourced from the original manufacturer or authorized distributors?
All TPS562208DDCT 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 TPS562208DDCT meets industry standards.
7.What is the process for return or replacement of TPS562208DDCT?
All TPS562208DDCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS562208DDCT, 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 TPS562208DDCT part is unused and in its original packaging.
Return procedure for TPS562208DDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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