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Texas Instruments TPS62142RGTT
- Part No.:
- TPS62142RGTT
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS62142RGTT.pdf
- Description:
- IC REG BUCK 3.3V 2A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,254
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Product details
Overview
TPS62142RGTT from Texas Instruments is a synchronous step-down DC-DC converter optimized for high power density applications. It delivers up to 2 A continuous output current at a fixed 3.3 V output, operates from 3 V to 17 V input, features DCS-Control™ topology for fast transient response, and integrates power-good signaling - ideal for POL supplies in embedded systems and solid-state drives.
For engineers reviewing the TPS62142RGTT datasheet, TPS62142RGTT pinout, TPS62142RGTT application, or TPS62142RGTT equivalent, key selection criteria include its 3.3 V fixed output, 2.5 MHz (typ.) switching frequency, 17 µA quiescent current in power-save mode, seamless PWM-to-PSM transition, and thermal/short-circuit protection - all in a 3 mm × 3 mm VQFN-16 package.
Technical Context
The TPS62142RGTT implements DCS-Control™ topology, combining voltage-mode feedback with direct output-voltage sensing to achieve fast load transient response and stable regulation using small external components. Its internal error amplifier and comparator-based ac loop enable immediate correction of output deviations without phase-margin compensation.
It supports dual operating modes: fixed-frequency PWM (2.5 MHz typical, selectable to 1.25 MHz via FSW pin) for medium/heavy loads, and power-save mode with linearly decreasing switching frequency at light loads - both seamlessly transitioning without output disturbance. The device enters 100% duty-cycle operation when VIN approaches VOUT, sustaining regulation down to VIN ≈ VOUT + IOUT × (RDS(on)_HS + RL).
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. |
| Output Voltage | Fixed 3.3 V - eliminates external feedback resistors; ±1.5% initial accuracy over temperature and line/load. |
| Max Output Current | 2 A continuous - sustained across full input range and junction temperature (–40°C to 125°C). |
| Switching Frequency | 2.5 MHz (typ.), selectable to 1.25 MHz - enables compact 2.2-µH inductors and low-profile ceramic capacitors. |
| Quiescent Current | 17 µA (typ.) in power-save mode - extends battery runtime in always-on subsystems. |
| Thermal Shutdown | 160°C (typ.) with 20°C hysteresis - protects against sustained overload or poor PCB thermal design. |
| Power-Good Output | Open-drain PG with 92–98% rising threshold - enables reliable power sequencing and system reset coordination. |
Pinout & Package
TPS62142RGTT is housed in a thermally enhanced 16-pin VQFN package (RGT), 3.00 mm × 3.00 mm body size, with an exposed thermal pad soldered to AGND/PGND for optimal heat dissipation and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2,3 SW | Switch node | Connects to internal high-side/low-side MOSFETs; requires low-inductance path to output inductor and capacitor. |
| 4 PG | Power-good open-drain output | Signals VOUT regulation status; requires external pullup resistor (≤100 kΩ) to ≤7 V. |
| 5 FB | Feedback input | Internally tied to fixed 3.3 V divider; recommended to connect to AGND for thermal stability. |
| 6 AGND | Analog ground | Must be connected directly to exposed thermal pad and common ground plane to minimize noise coupling. |
| 7 FSW | Frequency select input | Low = 2.5 MHz, High = 1.25 MHz; internal 400-kΩ pulldown ensures default high-frequency operation. |
| 8 DEF | Output voltage scaling input | Low = 3.3 V nominal, High = 3.465 V (+5%); internal pulldown enables default nominal regulation. |
| 9 SS/TR | Soft-start/tracking input | External capacitor sets startup ramp time; supports monotonic pre-biased start-up and voltage tracking. |
| 10 AVIN | Analog supply input | Supplies control circuitry; must be connected to same source as PVIN for proper biasing. |
| 11,12 PVIN | Power stage supply input | High-current input for MOSFET drivers; requires local 10-µF ceramic bypass capacitor near pins. |
| 13 EN | Enable input | Active-high logic; internal 400-kΩ pulldown ensures safe shutdown on floating condition. |
| 14 VOS | Voltage sense input | Connects to output for precise regulation; improves loop stability with remote sensing capability. |
| 15,16 PGND | Power ground | Carries high-switching currents; must be connected directly to exposed thermal pad and ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Enables <10 µs load transient response with minimal output capacitance (e.g., 22 µF ceramic) and no external compensation. |
| Seamless power-save mode | Automatically transitions between PWM and PSM without output voltage glitch or audible noise - critical for noise-sensitive RF subsystems. |
| 100% duty-cycle operation | Maintains regulation when VIN drops to ~3.8 V at 2 A (VOUT = 3.3 V), extending usable battery life in portable Li-ion applications. |
| Programmable soft-start & tracking | SS/TR pin supports controlled startup into pre-biased rails and synchronized sequencing with other power supplies via external voltage reference. |
| Integrated protection | Includes undervoltage lockout (2.7 V threshold), thermal shutdown (160°C), short-circuit current limiting (1.6 A during fault), and overtemperature hysteresis. |
Applications
| Standard 12-V Rail Supplies | POL Supply from Li-ion Battery |
|---|---|
Use Scenario: Converting 12-V intermediate bus to 3.3-V logic rail in industrial PLCs or network switches. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering clean, regulated 3.3 V to FPGA I/O banks and microcontroller peripherals. Use Value: 2.5-MHz switching minimizes inductor size (<2.2 µH) while DCS-Control maintains <20-mV undershoot during 1-A load steps. | Use Scenario: Powering ARM-based embedded modules from 2S or 3S Li-ion packs (6–12.6 V). IC Role / Device Role / Timing Role: Main system regulator enabling deep-sleep modes with 17-µA quiescent current and fast wake-up via EN pin. Use Value: 100% duty-cycle operation sustains 3.3-V output down to ~3.8-V input, maximizing battery discharge depth before brownout. |
| Solid-State Drives | Mobile PCs & Tablets |
Use Scenario: Generating 3.3-V VCC for NAND flash controllers and DRAM interfaces in M.2 NVMe SSDs. IC Role / Device Role / Timing Role: Low-noise, high-efficiency buck converter with PG signal used for controller initialization sequencing. Use Value: Open-drain PG output coordinates with host controller to prevent firmware access until rail is fully stabilized and within ±3% tolerance. | Use Scenario: Supplying 3.3-V I/O and memory rails in thin-and-light notebooks with strict thermal envelope constraints. IC Role / Device Role / Timing Role: Compact, thermally efficient POL converter mounted directly beneath SoC for minimal trace inductance. Use Value: 3-mm × 3-mm VQFN package with exposed thermal pad achieves 45°C/W θJA, enabling 2-A operation without heatsink in 4-layer PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62141RGTT | Fixed 1.8-V output; identical pinout, package, and feature set except output voltage and DEF/PG logic. | Used where 1.8-V core logic or DDR termination is required instead of 3.3-V I/O rail. | Select TPS62141RGTT only when 1.8-V output is mandatory; not interchangeable without schematic revision. |
| TPS62143RGTT | Fixed 5.0-V output; same package, thermal specs, and control features; PG logic matches TPS62142RGTT. | Targets 5-V analog front-ends, USB PHYs, or legacy interface rails requiring higher voltage. | Choose TPS62143RGTT for 5-V applications; shares layout compatibility but requires output capacitor and inductor re-optimization. |
Compared with TPS62142RGTT, TPS62141RGTT provides lower output voltage for core logic domains, while TPS62143RGTT supports higher-voltage analog/peripheral rails - all three share identical thermal performance, protection features, and PCB footprint, enabling family-based BOM optimization.
Availability
TPS62142RGTT is available at Aetrix Electronics and suitable for embedded systems, solid-state drives, and mobile computing platforms requiring stable component supply, long-term manufacturability, and automotive-grade reliability under extended temperature operation.
Supply support for TPS62142RGTT 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 designing analog ICs, embedded processors, and power management solutions for industrial, automotive, and consumer markets.
The TPS6214x product line delivers high-efficiency, high-density step-down converters for space-constrained applications where fast transient response, low quiescent current, and robust protection are essential - especially in battery-powered and multi-rail embedded systems.
FAQ
What is the output voltage of the TPS62142RGTT?
The TPS62142RGTT provides a fixed 3.3-V output with ±1.5% initial accuracy over temperature and line/load conditions. This value is factory-trimmed and does not require external feedback resistors. The DEF pin allows dynamic scaling to +5% (3.465 V) during operation, supporting voltage margining for system validation. The TPS62142RGTT datasheet specifies this output voltage in Section 5 (Device Comparison Table) and Section 7.5 (Electrical Characteristics).
Does the TPS62142RGTT support power sequencing with other rails?
Yes, the TPS62142RGTT supports robust power sequencing via its EN (enable) and PG (power-good) pins. EN accepts active-high logic and can be driven by another rail's PG signal to enforce turn-on order. PG is an open-drain output that asserts high-impedance when VOUT reaches 92–98% of nominal and pulls low during faults - enabling cascaded sequencing with external pullup resistors. These functions are detailed in Sections 6 (Pin Functions) and 8.3.2–8.3.3 of the TPS62142RGTT datasheet.
What package type and dimensions does the TPS62142RGTT use?
The TPS62142RGTT uses a 16-pin VQFN package with designation RGT, measuring 3.00 mm × 3.00 mm with an exposed thermal pad. This package is specified in TI's official documentation (Section 13: Mechanical, Packaging, and Orderable Information) and confirmed in the device marking and packaging addendum. The thermal pad must be soldered to AGND/PGND for thermal performance and mechanical reliability - critical for sustaining 2-A continuous output.
How does the TPS62142RGTT handle light-load efficiency?
The TPS62142RGTT maintains high light-load efficiency through automatic, seamless transition into power-save mode (PSM), reducing quiescent current to 17 µA (typical) while lowering switching frequency linearly with load. Unlike burst-mode converters, DCS-Control™ avoids output voltage ripple and audible noise. This behavior is validated in Figure 7-1 (Quiescent Current) and described in Section 8.4.2 of the TPS62142RGTT datasheet, ensuring stable operation down to microamp-level loads.
Is the TPS62142RGTT pin-compatible with other devices in the TPS6214x family?
Yes, the TPS62142RGTT is pin-to-pin compatible with TPS62140, TPS62140A, TPS62141, and TPS62143 per TI's official documentation (Section 1, Features). All share identical 16-pin VQFN (RGT) packaging, pin configuration, and terminal functions - differing only in output voltage (fixed vs. adjustable) and PG logic (high-impedance vs. active-low). This allows drop-in replacement for voltage-specific variants without PCB redesign, provided external components match the target output.
TPS62142RGTT 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):
- 3.3V
- 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)
TPS62142RGTT FAQ
1.How can I place an order for TPS62142RGTT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62142RGTT 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 TPS62142RGTT reliable?
The price and inventory of TPS62142RGTT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62142RGTT is usually 5 days.
3.What payment methods are accepted for TPS62142RGTT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62142RGTT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62142RGTT?
TPS62142RGTT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62142RGTT 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 TPS62142RGTT?
For technical support, including TPS62142RGTT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62142RGTT requirements.
6.How does Aetrix verify that TPS62142RGTT is sourced from the original manufacturer or authorized distributors?
All TPS62142RGTT 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 TPS62142RGTT meets industry standards.
7.What is the process for return or replacement of TPS62142RGTT?
All TPS62142RGTT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62142RGTT, 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 TPS62142RGTT part is unused and in its original packaging.
Return procedure for TPS62142RGTT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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