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Texas Instruments TPS6209718RWKR
- Part No.:
- TPS6209718RWKR
- Manufacturer:
- Texas Instruments
- Package:
- 11-PowerVFQFN
- Datasheet:
-
TPS6209718RWKR.pdf
- Description:
- IC REG BUCK 1.8V 2A 11VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,488
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Product details
Overview
TPS6209718RWKR from Texas Instruments is a 2-A synchronous step-down DC/DC converter with iDCS-Control topology, fixed 1.8-V output, ±1% voltage accuracy, and selectable 1.5–2.5-MHz switching frequency in a 2-mm × 2-mm VQFN-11 (RWK) package. It delivers up to 97% efficiency across 2.5–6.0-V input range and supports forced PWM mode for low-noise POL regulation in SSDs and PLCs.
For engineers reviewing the TPS6209718RWKR datasheet, TPS6209718RWKR pinout, TPS6209718RWKR application, or TPS6209718RWKR equivalent, key selection criteria include its 1.8-V fixed output, 11-pin VQFN package with PGND/SW/VOS/FB/PG/EN/AVIN/PVIN/SS/TR/MODE/AGND terminals, hiccup short-circuit protection, programmable soft start, and power-good signaling for rail sequencing.
Technical Context
The TPS6209718RWKR implements iDCS-Control - a predictive on-time architecture enabling seamless transition between PWM and Power Save Mode (PSM), or forced fixed-frequency PWM operation via MODE pin configuration. Its internal compensation supports >150-µF output capacitance for stable transient response.
It integrates dual MOSFET switches 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 (165-Ω path) during shutdown. The SS/TR pin enables both soft-start timing control (7.5-µA constant-current charge) and ratiometric voltage tracking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1% - eliminates external resistor divider, simplifies layout and improves thermal performance when FB tied to AGND. |
| Input Voltage Range | 2.5 V to 6.0 V - compatible with single-cell Li-ion, USB PD, and industrial 3.3/5-V rails. |
| Max Output Current | 2 A continuous - supports high-current digital loads including FPGA I/O banks and microcontroller cores. |
| Switching Frequency | Selectable 1.5–2.5 MHz - enables compact magnetics (e.g., 1-µH inductor) and noise filtering for EMI-sensitive applications. |
| Efficiency | Up to 97% at medium-to-heavy load - minimizes thermal dissipation in space-constrained embedded systems. |
| Quiescent Current | 40–65 µA in active no-switch state - extends battery life in always-on monitoring circuits. |
| Thermal Shutdown | 160°C threshold with 20°C hysteresis - protects against sustained overload without requiring external thermal management. |
Pinout & Package
TPS6209718RWKR uses a 2-mm × 2-mm, 11-terminal VQFN package (RWK suffix), thermally enhanced with exposed PGND pad for PCB heat sinking. Package outline and land pattern comply with JEDEC MO-220VGGD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND | Power ground | Primary return path for high-current switch node; must be connected to large copper pour for thermal and EMI performance. |
| SW | Switch node | Connects internal high/low-side MOSFETs to external inductor; requires tight layout to minimize ringing and EMI. |
| VOS | Output voltage sense | Direct connection point to output capacitor anode; enables accurate remote sensing and fast discharge path during shutdown. |
| FB | Feedback reference | Internally biased to 0.8 V; for fixed-output variants, tie to AGND to reduce thermal resistance and improve reliability. |
| PG | Power-good open-drain | Signals valid regulation (95% VOUT); used for sequencing other rails - requires external pull-up ≤6 V. |
| EN | Enable input | Active-high logic control with 375-kΩ internal pulldown; enables precise power-up timing and system-level sleep control. |
| PVIN | Main power input | High-current VIN path for power switches; separate from AVIN to isolate analog circuitry from switching noise. |
| AVIN | Analog supply | Bias supply for control circuitry; connect directly to PVIN but use local 1-µF ceramic decoupling for noise immunity. |
| SS/TR | Soft-start & tracking | 7.5-µA current source sets ramp time; also accepts external voltage for coordinated multi-rail startup or tracking. |
| MODE | Operation mode select | Configures PWM-only (resistor/open) or PWM/PSM (tied to AGND); determines switching frequency and light-load behavior. |
| AGND | Analog ground | Reference for FB, MODE, SS/TR, and internal error amplifier; must be isolated from noisy PGND until single-point star connection. |
Key Features
| Feature | Design Value |
|---|---|
| iDCS-Control topology | Enables predictive on-time control with seamless PWM-to-PSM transition or forced fixed-frequency operation - critical for noise-sensitive imaging or ADC subsystems. |
| Programmable soft start | External capacitor on SS/TR pin sets controlled output ramp rate (e.g., 1-ms rise with 100-nF), preventing inrush current damage to input capacitors and upstream regulators. |
| Output voltage tracking | SS/TR pin accepts external voltage ramp to coordinate startup/shutdown sequence with other rails - essential for FPGAs and processors requiring strict voltage ordering. |
| Hiccup short-circuit protection | Triggers automatic 100-µs recovery cycle after 32 overcurrent events - limits fault energy and avoids thermal runaway during sustained shorts. |
| 100% duty-cycle mode | Maintains regulation down to VIN ≈ VOUT + IOUT×(RDS(on)+DCRL) - supports ultra-low dropout operation in battery-powered systems near end-of-discharge. |
Applications
| Motor Drives | Programmable Logic Controllers (PLCs) |
|---|---|
Use Scenario: Powering gate drivers and position-sensing ADCs in servo motor control modules operating from 24-V industrial bus with local 1.8-V logic rail. IC Role / Device Role / Timing Role: Point-of-load regulator delivering clean, sequenced 1.8-V supply to FPGA configuration I/O and isolated communication interfaces. Use Value: Forced PWM mode ensures consistent switching frequency for predictable EMI filtering; PG signal synchronizes enable of isolated CAN transceivers. | Use Scenario: Generating 1.8-V core voltage for ARM-based PLC CPUs running real-time control firmware with deterministic interrupt latency. IC Role / Device Role / Timing Role: High-efficiency buck converter supplying processor core domain, tightly regulated to maintain clock stability under dynamic load steps. Use Value: ±1% output accuracy and 97% peak efficiency minimize thermal drift and extend mean time between failures in unventilated enclosures. |
| Solid State Drives (SSDs) | Point of Load (POL) Regulators |
Use Scenario: Providing 1.8-V VCCQ supply to NAND flash controllers and PCIe PHYs in enterprise SSDs with strict power integrity requirements. IC Role / Device Role / Timing Role: Low-noise POL regulator with output discharge and voltage tracking to meet JEDEC JESD220 power sequencing standards. Use Value: VOS-sensed output and 165-Ω discharge path ensure rapid, controlled rail collapse during hot-plug events - preventing data corruption. | Use Scenario: Local regulation for high-speed SerDes lanes in telecom baseband cards where multiple 1.8-V domains require independent sequencing and monitoring. IC Role / Device Role / Timing Role: Compact, thermally optimized buck converter enabling dense board layouts with minimal BOM count and no external compensation components. Use Value: 2-mm × 2-mm VQFN package and internal compensation allow <100-mm² solution size while supporting >150-µF ceramic output capacitance for low-impedance broadband decoupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6209733RWKR | Identical package and architecture, but fixed 3.3-V output; FB pin internally connected to 0.8-V reference and AGND. | Used where 3.3-V logic or interface rail is required instead of 1.8-V; not interchangeable without redesigning feedback network and load compatibility. | Select TPS6209733RWKR only when system requires 3.3-V output - pinout and thermal design are identical, but output voltage is not reconfigurable. |
| TPS628512RQWR | Successor device in SOT-583 package; 0.5-A rating, lower IQ (15 µA), integrated LDO post-regulator, smaller footprint (1.6 mm × 2.1 mm). | Targeted at ultra-low-power IoT sensors and wearables; lacks 2-A capability and hiccup protection - unsuitable for high-current SSD or PLC use cases. | Choose TPS628512RQWR only for new designs prioritizing size and standby power over output current and robustness; not a drop-in replacement for TPS6209718RWKR. |
Compared with TPS6209733RWKR, the TPS6209718RWKR provides matched thermal and layout compatibility but serves distinct voltage domains; compared with TPS628512RQWR, it trades higher quiescent current for double the output current, full hiccup protection, and proven ruggedness in industrial environments.
Availability
TPS6209718RWKR is available at Aetrix Electronics and suitable for solid-state drives (SSDs), programmable logic controllers (PLCs), and motor drive systems requiring stable component supply, long-term lifecycle support, and traceable industrial-grade sourcing.
Supply support for TPS6209718RWKR 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 TPS62097 family was designed specifically for noise-sensitive, high-efficiency point-of-load applications in industrial automation and storage systems - emphasizing thermal resilience, precise voltage accuracy, and flexible sequencing capabilities.
FAQ
What is the recommended output capacitor value for stable operation of the TPS6209718RWKR?
The TPS6209718RWKR supports >150 µF total output capacitance using X7S/X7R ceramic capacitors. TI recommends ≥22 µF (e.g., 22-µF/6.3-V X7S in 0805) placed close to VOS and PGND pins. Larger values improve transient response and reduce output ripple, especially under 2-A load steps. The internal compensation remains stable across this range without external components.
Does the TPS6209718RWKR require an external feedback resistor divider?
No. The TPS6209718RWKR is a fixed 1.8-V output variant - its feedback reference is internally set to 0.8 V and routed to generate 1.8 V. TI recommends connecting the FB pin directly to AGND for improved thermal performance and reduced noise susceptibility, eliminating the need for external resistors.
How does the MODE pin configure operation modes on the TPS6209718RWKR?
The MODE pin on the TPS6209718RWKR sets both switching frequency and operating mode during a 50-µs detection window after EN goes high. Tying MODE to AGND enables automatic PWM/PSM transition; leaving it open or pulling it high with a resistor selects forced PWM at 1.5/1.75/2.25/2.5 MHz. Once configured, the mode cannot be changed dynamically without cycling EN.
What protection features are integrated into the TPS6209718RWKR?
The TPS6209718RWKR integrates hiccup short-circuit protection (32-event lockout with 100-µs auto-restart), thermal shutdown (160°C trip with 20°C hysteresis), undervoltage lockout (2.3-V nominal threshold), and output discharge (165-Ω path activated during disable/UVLO/fault). These operate independently of external components and require no configuration.
Can the TPS6209718RWKR support voltage tracking with another power rail?
Yes. The SS/TR pin on the TPS6209718RWKR accepts an external voltage ramp (0–0.8 V) to force proportional output voltage tracking. When driven by another regulator's soft-start node, it achieves ratiometric or coincidental startup/shutdown - verified in TI reference designs for FPGA and SoC power sequencing per JEDEC standards.
TPS6209718RWKR 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)
TPS6209718RWKR FAQ
1.How can I place an order for TPS6209718RWKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS6209718RWKR 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 TPS6209718RWKR reliable?
The price and inventory of TPS6209718RWKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS6209718RWKR is usually 5 days.
3.What payment methods are accepted for TPS6209718RWKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS6209718RWKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS6209718RWKR?
TPS6209718RWKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS6209718RWKR 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 TPS6209718RWKR?
For technical support, including TPS6209718RWKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS6209718RWKR requirements.
6.How does Aetrix verify that TPS6209718RWKR is sourced from the original manufacturer or authorized distributors?
All TPS6209718RWKR 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 TPS6209718RWKR meets industry standards.
7.What is the process for return or replacement of TPS6209718RWKR?
All TPS6209718RWKR units undergo pre-shipment inspection (PSI). If there is an issue with TPS6209718RWKR, 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 TPS6209718RWKR part is unused and in its original packaging.
Return procedure for TPS6209718RWKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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