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Texas Instruments TPS62141RGTR
- Part No.:
- TPS62141RGTR
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS62141RGTR.pdf
- Description:
- IC REG BUCK 1.8V 2A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,396
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Product details
Overview
TPS62141RGTR from Texas Instruments is a 3-V to 17-V, 2-A synchronous step-down DC-DC converter in a 3-mm × 3-mm VQFN-16 package, featuring DCS-Control™ topology, 1.8-V fixed output voltage, and power-good (open-drain) signaling. It delivers up to 2 A continuous output current with 17 µA typical quiescent current and supports seamless PWM-to-power-save mode transition for high efficiency across load ranges. Used in POL supplies for Li-ion battery-powered embedded systems and solid-state drives.
For engineers reviewing the TPS62141RGTR datasheet, TPS62141RGTR pinout, TPS62141RGTR application, or TPS62141RGTR equivalent, key selection criteria include its fixed 1.8-V output, 100% duty-cycle capability down to VIN ≈ VOUT + 15%, thermal shutdown at 160°C, and compatibility with compact 2.2-µH inductors and 22-µF output capacitors in space-constrained designs.
Technical Context
The TPS62141RGTR implements DCS-Control™-a hybrid regulation topology combining fast comparator-based ac loop response with a stable voltage feedback loop-to achieve both excellent transient performance and tight DC regulation. Its internal 1.8-V reference is factory-trimmed, eliminating external resistive dividers while supporting ±5% margining via the DEF pin.
It operates in PWM mode at 2.5 MHz (FSW = low) or 1.25 MHz (FSW = high), with automatic transition into power-save mode below light-load thresholds. The device integrates high-side (90 mΩ typ. @ VIN ≥ 6 V) and low-side (40 mΩ typ. @ VIN ≥ 6 V) MOSFETs, undervoltage lockout (2.7 V threshold, 200-mV hysteresis), and thermal shutdown (160°C, 20°C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports single/multi-cell Li-ion batteries and standard 12-V intermediate rails without external pre-regulation. |
| Output Voltage | Fixed 1.8 V - eliminates need for external feedback resistors; initial accuracy ±1.8% (785.6–814.4 mV at FB pin). |
| Max Output Current | 2 A continuous - sustained under thermal limits with proper PCB copper and thermal pad soldering per RθJB = 17.4°C/W. |
| Quiescent Current | 17 µA typical - enables >1000-hour standby in always-on battery applications without significant drain. |
| Switching Frequency | 2.5 MHz (FSW = low) or 1.25 MHz (FSW = high) - selects trade-off between small passive size (2.2 µH/22 µF) and lower ripple. |
| Power-Good Output | Open-drain PG with 92–98% rising threshold - provides reliable rail sequencing signal when pulled up to ≤7 V. |
| Thermal Shutdown | 160°C with 20°C hysteresis - protects silicon integrity during overload or poor heatsinking; resumes after cooldown. |
Pinout & Package
TPS62141RGTR uses a 16-pin VQFN (RGT) package with 3.00 mm × 3.00 mm body and exposed thermal pad soldered to AGND/PGND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2,3 SW | Switch node | Connects to inductor; carries high di/dt switching current; requires short, low-inductance layout to minimize EMI. |
| 4 PG | Power-good open-drain output | Asserts high-impedance when VOUT ≥ 92% of nominal; requires external pullup; used for system power sequencing. |
| 5 FB | Feedback input (internal connection) | Internally tied to 1.8-V reference; connect to AGND for optimal thermal performance in fixed-output variants. |
| 6 AGND | Analog ground | Must be directly connected to exposed thermal pad and system ground plane to stabilize control loop and reduce noise. |
| 7 FSW | Frequency select input | Low = 2.5 MHz (smaller passives); high = 1.25 MHz (lower ripple); internal 400-kΩ pulldown ensures default high-frequency operation. |
| 8 DEF | Output voltage scaling input | Low = 1.8 V; high = 1.89 V (±5% margining); internal pulldown enables default nominal output without external bias. |
| 9 SS/TR | Soft-start/tracking input | External capacitor sets startup ramp time; supports monotonic start into pre-biased outputs and voltage tracking. |
| 10 AVIN | Analog supply input | Must tie to same source as PVIN; powers control circuitry; decoupling near pin improves PSRR and stability. |
| 11,12 PVIN | Power stage supply input | High-current path for MOSFETs; separate routing from AVIN recommended to avoid coupling noise into control logic. |
| 13 EN | Enable input | Active-high; internal 400-kΩ pulldown ensures safe default disable; supports precise power-rail sequencing. |
| 14 VOS | Output voltage sense | Direct connection to output capacitor; improves load regulation by compensating for trace IR drop. |
| 15,16 PGND | Power ground | Carries high-switching-current return path; must connect directly to exposed thermal pad and low-impedance ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Combines fast transient response (<10 µs recovery from 1-A step) with stable DC regulation using integrated ac/dc loops-no external compensation required. |
| 100% duty-cycle mode | Enables regulation down to VIN ≈ VOUT + 15% (e.g., 2.07 V min for 1.8 V out), extending runtime in battery discharge tails. |
| Programmable soft-start | External capacitor on SS/TR pin controls rise time; prevents inrush into large output caps and avoids brownout on weak sources. |
| Seamless power-save transition | No output voltage glitch or audible noise during PWM-to-PSM crossover; maintains regulation across 10-µA to 2-A load range. |
| Integrated protection | Includes undervoltage lockout (2.7 V), overtemperature shutdown (160°C), and short-circuit current limiting (1.6 A during fault). |
Applications
| Solid-State Drives (SSD) | Mobile PCs and Tablets |
|---|---|
Use Scenario: Powering 1.8-V NAND flash memory and controller ICs in M.2 and U.2 SSD modules with tight thermal envelopes. IC Role / Device Role / Timing Role: Primary POL regulator delivering regulated 1.8-V rail from 3.3-V or 12-V board supply. Use Value: DCS-Control™ ensures <50-mV undershoot during 1-A load transients; 17-µA IQ extends sleep-mode battery life. |
Use Scenario: Supplying core voltage to low-power application processors (e.g., ARM Cortex-A series) in fanless tablets. IC Role / Device Role / Timing Role: High-efficiency buck converter operating from single-cell Li-ion (3.0–4.2 V) or USB-C PD input. Use Value: 100% duty-cycle mode sustains 1.8-V output down to 2.07-V input, maximizing usable battery capacity. |
| Embedded Industrial Controllers | LDO Replacement in Signal Chain |
Use Scenario: Replacing discrete buck + LDO solutions in programmable logic controllers (PLCs) requiring clean 1.8-V I/O rails. IC Role / Device Role / Timing Role: Standalone DC-DC regulator with PG signaling for FPGA configuration sequencing and watchdog coordination. Use Value: 2.5-MHz switching enables use of 2.2-µH inductor and 22-µF ceramic output cap-reducing solution size by >40% vs. LDO. |
Use Scenario: Substituting linear regulators for powering ADC/DAC reference buffers where low noise and high PSRR are critical. IC Role / Device Role / Timing Role: Low-noise switching regulator with VOS pin for remote sensing and minimized IR drop error. Use Value: Output ripple <10 mVpp (with proper layout) meets precision analog requirements; 95% peak efficiency reduces thermal load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62142RGTR | Fixed 3.3-V output; identical pinout, package, and feature set except output voltage and DEF behavior. | Used where 3.3-V I/O or interface rails are required instead of 1.8-V core logic. | Select TPS62142RGTR only if system requires 3.3-V output; no PCB change needed but feedback network is internal and non-adjustable. |
| TPS62130ARGTR | 3-V to 17-V input, 2-A output, but adjustable 0.9–6-V output; lacks VOS pin and has different PG logic (high-impedance only). | Preferred when output voltage must be tuned post-design or multiple rails share one BOM variant. | Choose TPS62130ARGTR for design flexibility; requires external resistor divider and lacks remote sensing-less accurate under high-current trace drops. |
Compared with TPS62141RGTR, TPS62142RGTR offers identical performance at 3.3 V but cannot supply 1.8 V, while TPS62130ARGTR trades fixed-voltage simplicity for adjustability and loses VOS-based load regulation accuracy-making TPS62141RGTR optimal for cost-sensitive, space-constrained 1.8-V POL applications.
Availability
TPS62141RGTR is available at Aetrix Electronics and suitable for solid-state drives, mobile PCs, embedded industrial controllers, and LDO-replacement power designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62141RGTR 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 ICs, with decades of expertise in high-efficiency DC-DC conversion and automotive-grade reliability.
The TPS6214x product line was designed specifically for high-density point-of-load applications in portable and space-constrained electronics, emphasizing minimal external components, ultra-low quiescent current, and seamless light-load efficiency.
FAQ
What is the output voltage tolerance of the TPS62141RGTR?
The TPS62141RGTR provides a factory-trimmed fixed 1.8-V output with initial accuracy of ±1.8% (785.6–814.4 mV at the FB pin). Over temperature (–40°C to 125°C) and line/load conditions, total output variation remains within ±3% of nominal, verified per TI's SLVSAJ0F datasheet Section 7.5.
Does the TPS62141RGTR require an external feedback resistor network?
No. The TPS62141RGTR is a fixed-output variant with internal 1.8-V reference and feedback divider. Pin 5 (FB) is internally connected and should be tied to AGND for optimal thermal performance-not used for external resistor networks as in adjustable versions like TPS62140.
Can the TPS62141RGTR operate with input voltage below 3 V?
No. The absolute minimum input voltage is 3 V per recommended operating conditions. Below this, undervoltage lockout activates at 2.7 V (typical), disabling switching. The device does not regulate or sustain output below 3 V input-even in 100% duty-cycle mode.
How is thermal performance managed on the TPS62141RGTR?
The TPS62141RGTR uses an exposed thermal pad (pins 15–16 and center pad) that must be soldered to AGND/PGND and a minimum 100-mm² copper pour. With proper layout, its RθJB is 17.4°C/W, enabling full 2-A operation at up to 125°C junction temperature-verified in TI's thermal characterization report.
Is the TPS62141RGTR pin-compatible with other devices in the TPS6214x family?
Yes. The TPS62141RGTR shares identical 16-pin VQFN (RGT) package, pinout, and footprint with TPS62140, TPS62140A, TPS62142, and TPS62143. This allows direct substitution within the same family for different output voltages-provided system-level validation confirms compatibility with PG logic and DEF functionality.
TPS62141RGTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 16-VFQFN Exposed Pad
- 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):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
TPS62141RGTR FAQ
1.How can I place an order for TPS62141RGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62141RGTR 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 TPS62141RGTR reliable?
The price and inventory of TPS62141RGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62141RGTR is usually 5 days.
3.What payment methods are accepted for TPS62141RGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62141RGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62141RGTR?
TPS62141RGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62141RGTR 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 TPS62141RGTR?
For technical support, including TPS62141RGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62141RGTR requirements.
6.How does Aetrix verify that TPS62141RGTR is sourced from the original manufacturer or authorized distributors?
All TPS62141RGTR 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 TPS62141RGTR meets industry standards.
7.What is the process for return or replacement of TPS62141RGTR?
All TPS62141RGTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62141RGTR, 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 TPS62141RGTR part is unused and in its original packaging.
Return procedure for TPS62141RGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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