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Texas Instruments TPS62133RGTR
- Part No.:
- TPS62133RGTR
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS62133RGTR.pdf
- Description:
- IC REG BUCK 5V 3A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,789
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Product details
Overview
TPS62133RGTR from Texas Instruments is a synchronous step-down DC-DC converter optimized for high-power-density POL applications, delivering up to 3 A continuous output current at a fixed 5.0 V output voltage, with input voltage support from 3 V to 17 V and DCS-Control™ topology for fast transient response and seamless PWM-to-power-save mode transition.
For engineers reviewing the TPS62133RGTR datasheet, TPS62133RGTR pinout, TPS62133RGTR application, or TPS62133RGTR equivalent, this device is selected for battery-powered embedded systems, 12-V rail conversion, and solid-state drive power supplies where compact 3-mm × 3-mm QFN packaging, low quiescent current (17 µA), and integrated power-good signaling are critical design requirements.
Technical Context
The TPS62133RGTR implements DCS-Control™ topology, combining AC loop feedback for rapid load transient response with a DC voltage feedback loop for precise regulation-enabling stable 5.0 V output across ±0.5% initial accuracy and <0.1%/A load regulation. Its dual-mode operation (PWM at ~2.5 MHz or ~1.25 MHz via FSW pin, plus automatic power save mode) maintains >90% efficiency from 10 mA to 3 A load range.
It integrates protection features including undervoltage lockout (2.7 V threshold with 200 mV hysteresis), thermal shutdown (160°C trip with 20°C hysteresis), short-circuit detection with reduced 1.6-A current limit below 0.5 V output, and 100% duty-cycle operation for ultra-low dropout in battery-depletion scenarios.
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 5.0 V - eliminates external feedback resistors, reducing BOM count and layout sensitivity for stable USB/IO rail generation. |
| Max Output Current | 3 A continuous - enables direct replacement of discrete buck solutions in SSDs, modems, and embedded controllers. |
| Quiescent Current | 17 µA typical - sustains >90% efficiency down to 10 mA load, critical for always-on subsystems in mobile PCs and ePOS terminals. |
| Switching Frequency | Selectable 1.25 MHz / 2.5 MHz - allows trade-off between small inductor size (2.2 µH @ 1.25 MHz) and lower switching loss (higher efficiency). |
| Power-Good Output | Open-drain PG with 95% VOUT threshold - provides reliable sequencing signal for FPGA, ASIC, or microcontroller power-up coordination. |
| Thermal Protection | 160°C shutdown with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
TPS62133RGTR is housed in a thermally enhanced 16-pin VQFN package (RGT), 3.00 mm × 3.00 mm body size, with exposed thermal pad soldered to AGND/PGND for optimal thermal performance (RθJA = 45°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN (1,2,3) | Power input for high-current path | Connects directly to input capacitor and inductor; separate from AVIN to isolate noisy power stage from control logic. |
| PG (4) | Open-drain power-good indicator | Signals VOUT ≥95% nominal (i.e., ≥4.75 V); requires external pullup resistor to enable system-level sequencing or fault monitoring. |
| FB (5) | Feedback reference node | Internally tied to fixed 5.0 V divider; must be connected to AGND per TI recommendation to minimize thermal drift and improve stability. |
| AGND (6) | Analog ground reference | Must be shorted to exposed thermal pad and common ground plane to reduce noise coupling into error amplifier and soft-start circuitry. |
| FSW (7) | Frequency select input | Low = ~2.5 MHz (smaller inductors), High = ~1.25 MHz (higher efficiency); internal pulldown ensures safe default frequency on startup. |
| DEF (8) | Output voltage scaling control | Low = 5.0 V nominal, High = 5.25 V (±5% margining); internal 400-kΩ pulldown prevents floating state during configuration. |
| SS/TR (9) | Soft-start/tracking control | External capacitor sets output ramp time; supports monotonic start-up into pre-biased rails and voltage tracking with master supply. |
| AVIN (10) | Control circuit supply | Must tie to same source as PVIN; powers internal LDOs, comparators, and gate drivers-ensures stable bias under dynamic load. |
| EN (13) | Enable input | Active-high logic; internal 400-kΩ pulldown guarantees safe disable at power-up; enables multi-rail sequencing when driven by upstream regulator. |
| VOS (14) | Output voltage sense | Direct connection to output capacitor; improves loop stability and load transient response by sensing at point-of-load rather than FB node. |
| PGND (15,16) | Power ground return | High-current return path for MOSFETs; must connect directly to exposed thermal pad and minimize trace inductance to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Combines fast AC transient response (<10 µs recovery from 1-A step) with DC precision (±0.5% initial VOUT accuracy) using single-loop architecture-no external compensation required. |
| Seamless power save mode | Automatic transition from PWM to variable-frequency PSM at light loads preserves >85% efficiency down to 10 mA without output voltage glitch or audible noise. |
| Programmable soft start & tracking | Adjustable ramp time via SS/TR capacitor enables controlled inrush limiting and synchronized voltage sequencing with other rails (e.g., core + I/O domains). |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT + (IOUT × RDS(on) + IOUT × RL), extending runtime in Li-ion battery discharge phase below 5.5 V. |
| Integrated protection suite | Includes UVLO (2.7 V), thermal shutdown (160°C), short-circuit current limiting (1.6 A below 0.5 V), and overcurrent foldback-reducing need for external fault management circuitry. |
Applications
| Mobile PC Power Rail | Solid-State Drive (SSD) Core Supply |
|---|---|
|
Use Scenario: Powers DDR memory interface and controller logic in ultrabooks and 2-in-1 tablets operating from single-cell or dual-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary POL buck regulator delivering regulated 5.0 V at up to 3 A with tight transient response to handle bursty NAND flash access. Use Value: DCS-Control™ ensures <50-mV droop during 2-A load steps, while 17-µA quiescent current extends standby battery life beyond 72 hours. |
Use Scenario: Supplies 5.0 V to SATA or NVMe SSD controller and buffer memory in enterprise storage modules. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC-DC converter replacing linear regulators to meet JEDEC JESD22-A114 ESD immunity and thermal derating requirements. Use Value: 3-mm × 3-mm QFN package fits dense M.2 layouts; 100% duty cycle extends operational window during battery-backed write-cache flushes. |
| Embedded Industrial Controller | ePOS Terminal Main Supply |
|
Use Scenario: Powers ARM Cortex-M7 MCU, CAN transceiver, and isolated I/O peripherals in programmable logic controllers (PLCs) powered from 12-V field bus. IC Role / Device Role / Timing Role: Robust step-down regulator with integrated PG signaling for deterministic boot sequencing and brownout-safe reset coordination. Use Value: PG open-drain output interfaces directly with MCU's NMI pin; thermal shutdown and UVLO prevent firmware corruption during industrial voltage sags. |
Use Scenario: Generates main 5.0 V rail for payment terminal processors, display backlight drivers, and contactless card readers operating from AC adapter or internal LiPo. IC Role / Device Role / Timing Role: Compact, high-reliability POL converter meeting UL/IEC 62368-1 safety isolation and conducted emission limits for retail environments. Use Value: Fixed 5.0 V output eliminates calibration overhead; 45°C/W thermal resistance enables convection-only cooling in sealed plastic 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 |
|---|---|---|---|
| TPS62132RGTR | Fixed 3.3 V output; identical pinout, package, and feature set except output voltage and DEF pin behavior. | Used where 3.3 V I/O rail is required instead of 5.0 V-no change to PCB layout or external components beyond output capacitor value. | Select TPS62132RGTR only when system architecture mandates 3.3 V main supply; otherwise, TPS62133RGTR remains optimal for 5-V USB-peripheral or legacy interface compatibility. |
| TPS62140RGTR | Adjustable output (0.9–6 V) via FB resistor divider; same 3-mm × 3-mm QFN package and DCS-Control™ engine but lacks fixed-voltage optimization. | Preferred in designs requiring flexible VOUT tuning or future-proofing across multiple board revisions with varying voltage needs. | Choose TPS62140RGTR if output voltage may change post-design; TPS62133RGTR offers lower BOM cost, better light-load efficiency, and tighter initial accuracy for fixed 5-V use cases. |
Compared with TPS62132RGTR and TPS62140RGTR, the TPS62133RGTR delivers superior efficiency at 5.0 V due to internal resistor trimming, eliminates feedback network errors, and reduces design validation effort-making it the most cost-effective and production-ready choice for dedicated 5-V POL applications.
Availability
TPS62133RGTR is available at Aetrix Electronics and suitable for mobile PCs, solid-state drives, and embedded industrial controllers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across manufacturing batches.
Supply support for TPS62133RGTR 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 TPS6213x product line was designed specifically for space-constrained, high-current POL applications in portable and industrial electronics-emphasizing minimal external component count, seamless light-load efficiency, and robust protection without sacrificing transient performance.
FAQ
What is the output voltage tolerance of the TPS62133RGTR under full load and temperature range?
The TPS62133RGTR maintains a fixed 5.0 V output with ±1.0% total output voltage tolerance over –40°C to +125°C junction temperature, 3 V to 17 V input, and 0–3 A load-verified by TI's production test data including line/load regulation, thermal drift, and initial accuracy. This specification ensures reliable operation of downstream 5-V logic without additional post-regulation filtering.
Does the TPS62133RGTR require external feedback resistors to set its output voltage?
No, the TPS62133RGTR does not require external feedback resistors because it is a fixed-output variant with an internally trimmed resistor divider for 5.0 V. The FB pin is internally connected and must be tied to AGND per TI's layout guidance to optimize thermal performance and loop stability-eliminating resistor matching errors and reducing PCB area.
Can the TPS62133RGTR operate with input voltage as low as 3.0 V while delivering full 3-A output current?
Yes, the TPS62133RGTR supports full 3-A output current at 3.0 V input, but only when operating in 100% duty-cycle mode-where the high-side MOSFET remains continuously on. In this condition, output regulation depends on RDS(on) and inductor DCR; minimum input for sustained 3-A delivery is approximately 5.15 V (calculated per Equation 3 in the datasheet), so 3.0 V operation is limited to very light loads.
How does the power-good (PG) signal behave during thermal shutdown of the TPS62133RGTR?
During thermal shutdown, the TPS62133RGTR places the PG pin in high-impedance state-identical to its behavior during EN-driven shutdown or UVLO. This allows external pullup logic to detect fault conditions independently and initiate system-level thermal mitigation (e.g., clock throttling or fan activation) without false triggering from PG state transitions.
Is the TPS62133RGTR pin-compatible with the TPS62150 family?
No, the TPS62133RGTR is not pin-compatible with the TPS62150 family. It is explicitly pin-to-pin compatible only with TPS62140RGTR and TPS62150RGTR per TI's device comparison table and pin configuration documentation-meaning shared footprint, identical pin functions, and no PCB redesign required when migrating between those three part numbers.
TPS62133RGTR 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- 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)
TPS62133RGTR FAQ
1.How can I place an order for TPS62133RGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62133RGTR 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 TPS62133RGTR reliable?
The price and inventory of TPS62133RGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62133RGTR is usually 5 days.
3.What payment methods are accepted for TPS62133RGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62133RGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62133RGTR?
TPS62133RGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62133RGTR 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 TPS62133RGTR?
For technical support, including TPS62133RGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62133RGTR requirements.
6.How does Aetrix verify that TPS62133RGTR is sourced from the original manufacturer or authorized distributors?
All TPS62133RGTR 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 TPS62133RGTR meets industry standards.
7.What is the process for return or replacement of TPS62133RGTR?
All TPS62133RGTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62133RGTR, 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 TPS62133RGTR part is unused and in its original packaging.
Return procedure for TPS62133RGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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