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Texas Instruments TPS6209718RWKT
- Part No.:
- TPS6209718RWKT
- Manufacturer:
- Texas Instruments
- Package:
- 11-PowerVFQFN
- Datasheet:
-
TPS6209718RWKT.pdf
- Description:
- IC REG BUCK 1.8V 2A 11VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,574
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Product details
Overview
TPS6209718RWKT from Texas Instruments is a 2-A synchronous step-down DC/DC converter with iDCS-Control topology, fixed 1.8-V output, forced PWM or power-save mode operation, and selectable 1.5–2.5-MHz switching frequency. It delivers up to 97% efficiency across 2.5–6.0-V input range and supports point-of-load regulation in noise-sensitive industrial and storage applications.
For engineers reviewing the TPS6209718RWKT datasheet, TPS6209718RWKT pinout, TPS6209718RWKT application, or TPS6209718RWKT equivalent, key selection considerations include ±1% output voltage accuracy, programmable soft start via external capacitor, hiccup short-circuit protection, power-good open-drain output, and thermal shutdown with 160°C trip threshold.
Technical Context
The TPS6209718RWKT implements iDCS-Control - a predictive on-time architecture enabling seamless transition between PWM and Power Save Mode (PSM) or forced fixed-frequency PWM only. Its control loop integrates internal compensation supporting >150-µF output capacitance for stable POL operation.
It features dual MOSFET drivers with 40–96-mΩ high-side and 40–85-mΩ low-side RDS(on), 100% duty-cycle capability for ultra-low dropout, and active output discharge via 165-Ω internal resistor during disable or fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 2 A continuous - supports high-current digital loads like FPGAs and SSD controllers without derating at 125°C junction. |
| Input voltage range | 2.5 V to 6.0 V - compatible with single-cell Li-ion, 3.3-V/5-V rails, and wide-input industrial supplies. |
| Output voltage | Fixed 1.8 V ±1% - eliminates external feedback resistors; enables precise core voltage for low-voltage logic and memory interfaces. |
| Switching frequency | Selectable 1.5–2.5 MHz - allows EMI filtering optimization and compact magnetics using standard 1-µH inductors. |
| Efficiency | Up to 97% - achieved at medium-to-heavy loads in PWM mode; maintains high light-load efficiency via PSM transition. |
| Junction temperature | –40°C to 125°C - rated for extended industrial and automotive under-hood environments with no derating required. |
| Thermal resistance | RθJA = 83.4°C/W - enables 2-A operation on 2-layer PCBs without heatsinks when using recommended layout. |
Pinout & Package
TPS6209718RWKT is housed in a thermally enhanced 2-mm × 2-mm, 11-pin VQFN package (RWK) with exposed thermal pad. The package supports high-power density designs and efficient heat dissipation through PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND | Power ground | Primary return path for high-current switch node; must be connected directly to thermal pad and low-impedance ground plane. |
| SW | Switch node | Connects internal high-/low-side MOSFETs to external inductor; requires tight layout to minimize EMI and ringing. |
| VOS | Output voltage sense | Direct connection to output capacitor cathode ensures accurate load regulation and enables output discharge during shutdown. |
| FB | Feedback reference | Internally tied to 0.8-V reference for 1.8-V fixed output; recommended to connect to AGND for improved thermal performance. |
| PG | Power-good open-drain | Signals valid output regulation (95%–98% of 1.8 V); requires external pull-up ≤6 V for rail sequencing or system monitoring. |
| EN | Enable control | Logic-high active enable with 375-kΩ internal pulldown; supports controlled power-up and system-level sleep/wake coordination. |
| PVIN | Main power input | High-current VIN path for switch node; decoupled separately from AVIN to reduce noise coupling into analog circuitry. |
| AVIN | Analog supply | Bias supply for control circuitry; must be connected to PVIN externally to ensure proper startup and regulation stability. |
| SS/TR | Soft-start & tracking | Accepts external capacitor for programmable ramp time or external voltage for output tracking with ratiometric/coincidental modes. |
| MODE | Operation mode select | Determines PWM/PSM auto-transition (AGND) or forced PWM only (resistor/open); sets switching frequency during MODE detection window. |
| AGND | Analog ground | Reference for FB, MODE, SS/TR, and internal bandgap; must be isolated from PGND except at single-point star ground. |
Key Features
| Feature | Design Value |
|---|---|
| iDCS-Control topology | Enables seamless PWM-to-PSM transition without output voltage disturbance - critical for real-time systems requiring uninterrupted power. |
| Programmable soft start | External capacitor on SS/TR pin sets inrush current limit and startup timing - prevents input rail collapse during cold boot of multi-rail systems. |
| Output voltage tracking | SS/TR pin accepts external voltage source to coordinate TPS6209718RWKT output ramp with other rails - essential for FPGA I/O and memory interface sequencing. |
| Hiccup short-circuit protection | 32-cycle current-limit lockout followed by 100-µs auto-restart - limits fault energy and avoids thermal runaway during sustained overload or short. |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT + IOUT×(RDS(on)+LDCR) - extends usable input range in battery-powered applications near end-of-discharge. |
Applications
| Motor Drives | Programmable Logic Controllers (PLCs) |
|---|---|
Use Scenario: Powering gate drivers and isolated I/O modules in servo and stepper motor control units. IC Role / Device Role / Timing Role: Primary 1.8-V POL regulator supplying FPGA configuration logic and ADC reference buffers. Use Value: 97% efficiency minimizes heat in sealed enclosures; forced PWM mode eliminates audible noise during motion control cycles. | Use Scenario: Providing clean, sequenced 1.8-V supply to microcontroller cores and communication PHYs in modular PLC backplanes. IC Role / Device Role / Timing Role: Point-of-load converter with PG output used to enable downstream CAN transceivers only after stable 1.8-V rail is established. Use Value: ±1% output accuracy ensures reliable MCU clock generation; output tracking synchronizes with 3.3-V I/O rail for glitch-free state transitions. |
| Solid State Drives (SSDs) | Point of Load (POL) Regulators |
Use Scenario: Delivering regulated 1.8-V power to NAND flash controller ASICs and DRAM cache in enterprise SSDs. IC Role / Device Role / Timing Role: High-efficiency buck converter operating in forced PWM mode to suppress switching noise that could corrupt high-speed NVMe data lanes. Use Value: Selectable 2.5-MHz frequency enables use of small 1-µH inductors and 22-µF ceramic output caps - reducing BOM size and board area. | Use Scenario: Local regulation for low-voltage digital loads in industrial HMIs, medical imaging subsystems, and test equipment. IC Role / Device Role / Timing Role: Compact, thermally robust POL solution with integrated thermal shutdown and hiccup protection for unattended operation. Use Value: VQFN-RWK package with 2.0-mm × 2.0-mm footprint supports high-density layouts; 125°C junction rating ensures reliability in convection-cooled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS628512RRLR | 0.5-A, 6-V max input, SOT583 package, lower quiescent current (15 µA), no VOS pin or output discharge. | Targeted at space-constrained, ultra-low-power IoT sensors - lacks hiccup protection and PG output needed for industrial sequencing. | Choose TPS628512RRLR only for battery-operated, sub-500-mA applications where minimal BOM and footprint outweigh robustness requirements. |
| TPS62933RQWR | 3-A, 6-V input, 1.8-V fixed output, 2.2-MHz nominal frequency, integrated LDO post-regulator, higher RDS(on) (65 mΩ HS). | Designed for high-transient, noise-immune applications requiring ripple reduction - adds complexity and cost versus TPS6209718RWKT's simplicity. | Choose TPS62933RQWR when load transients exceed 2 A or when <10-mV ripple is mandatory; otherwise, TPS6209718RWKT offers better cost/performance balance. |
Compared with TPS628512RRLR, TPS6209718RWKT provides 4× higher output current, hiccup protection, and power-good signaling - making it suitable for industrial POL where fault resilience matters. Versus TPS62933RQWR, it trades peak current headroom for smaller size, lower cost, and simpler design - ideal for stable 2-A loads without extreme transient demands.
Availability
TPS6209718RWKT is available at Aetrix Electronics and suitable for motor drives, programmable logic controllers (PLCs), and solid state drives (SSDs) requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS6209718RWKT 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TPS62097 family was designed specifically for high-efficiency, noise-critical point-of-load regulation in industrial automation and storage systems - emphasizing thermal robustness, seamless light-load efficiency, and flexible sequencing capabilities.
FAQ
What is the maximum output current capability of the TPS6209718RWKT?
The TPS6209718RWKT delivers up to 2 A continuous output current across its full operating temperature range (–40°C to 125°C junction). This rating assumes proper PCB layout with thermal vias to the ground plane and adequate copper area per TI's recommended layout guidelines. Derating is not required below 125°C, and the device sustains this current with up to 97% efficiency at typical input voltages.
Does the TPS6209718RWKT require external feedback resistors to set the output voltage?
No, the TPS6209718RWKT does not require external feedback resistors. It is a fixed 1.8-V output variant with internal resistor divider and 0.8-V reference. TI recommends connecting the FB pin directly to AGND to improve thermal performance and reduce noise sensitivity - unlike adjustable versions which require external R1/R2 networks.
How does the MODE pin configure operation modes on the TPS6209718RWKT?
The MODE pin on the TPS6209718RWKT determines both operating mode and switching frequency during a 50-µs detection window after EN goes high. Connecting MODE to AGND enables automatic PWM/PSM transition; applying 8.2 kΩ, 18 kΩ, 39 kΩ, or 75 kΩ (or leaving open) selects forced PWM at 1.5, 1.75, 2.25, or 2.5 MHz respectively - all with fixed frequency for EMI control.
What protection features are integrated into the TPS6209718RWKT?
The TPS6209718RWKT integrates hiccup short-circuit protection (32-cycle lockout + 100-µs auto-restart), thermal shutdown (160°C trip with 20°C hysteresis), undervoltage lockout (2.3-V threshold), and output discharge (165-Ω internal resistor activated during disable/fault). These features ensure safe operation in unattended industrial environments without external supervision circuitry.
Can the TPS6209718RWKT support voltage tracking with other power rails?
Yes, the TPS6209718RWKT supports voltage tracking via its SS/TR pin. When driven by an external voltage source (e.g., another converter's output), it ramps its 1.8-V output ratiometrically or coincidentally with the source rail - enabling synchronized power-up/down sequences for FPGAs, processors, and memory interfaces. Tracking remains active until the SS/TR voltage exceeds 0.8 V.
TPS6209718RWKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- iDCS-Control
- Package/Case:
- 11-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 1.5MHz ~ 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 11-VQFN-HR (2x2)
TPS6209718RWKT FAQ
1.How can I place an order for TPS6209718RWKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS6209718RWKT 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 TPS6209718RWKT reliable?
The price and inventory of TPS6209718RWKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS6209718RWKT is usually 5 days.
3.What payment methods are accepted for TPS6209718RWKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS6209718RWKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS6209718RWKT?
TPS6209718RWKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS6209718RWKT 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 TPS6209718RWKT?
For technical support, including TPS6209718RWKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS6209718RWKT requirements.
6.How does Aetrix verify that TPS6209718RWKT is sourced from the original manufacturer or authorized distributors?
All TPS6209718RWKT 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 TPS6209718RWKT meets industry standards.
7.What is the process for return or replacement of TPS6209718RWKT?
All TPS6209718RWKT units undergo pre-shipment inspection (PSI). If there is an issue with TPS6209718RWKT, 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 TPS6209718RWKT part is unused and in its original packaging.
Return procedure for TPS6209718RWKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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