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Texas Instruments TPS630251YFFR
- Part No.:
- TPS630251YFFR
- Manufacturer:
- Texas Instruments
- Package:
- 20-UFBGA, DSBGA
- Datasheet:
-
TPS630251YFFR.pdf
- Description:
- IC REG BCK BST 2.9V 3.5A 20DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,721
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Product details
Overview
TPS630251YFFR from Texas Instruments is a fixed-output 2.9 V, high-efficiency synchronous buck-boost DC/DC converter in a 1.766 mm × 2.086 mm DSBGA-20 package. It delivers up to 2 A continuous output current with 2.3 V–5.5 V input range, 95% peak efficiency in buck or boost mode, and 35 µA quiescent current-enabling compact, battery-powered applications such as smartphones and portable medical sensors.
For engineers reviewing the TPS630251YFFR datasheet, TPS630251YFFR pinout, TPS630251YFFR application, or TPS630251YFFR equivalent, this page provides verified technical context, validated pin functions, confirmed fixed 2.9 V output behavior, real-world efficiency vs. load curves, and direct alternative part comparisons for system-level power architecture decisions.
Technical Context
The TPS630251YFFR implements average current-mode control using four internal N-channel MOSFETs, enabling seamless automatic transition between buck and boost operation without discontinuity or voltage droop. Its fixed 2.9 V output is internally trimmed (±1% accuracy in PWM mode), eliminating external feedback resistors and reducing BOM count.
It features dual supply rails (VIN for power stage, VINA for control logic), separate PGND/GND planes to minimize noise coupling, and integrated soft-start (450–700 µs depending on mode) with true shutdown (<2 µA ISD) and output capacitor discharge via 120 Ω internal switch. Power Save Mode activates below ~350 mA load, reducing switching frequency while maintaining regulation with ±1.3% dynamic voltage positioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9 V ±1% (PWM mode); enables plug-and-play integration with 2.9 V LDO-sensitive loads like RF transceivers or low-voltage microcontrollers. |
| Input Voltage Range | 2.3 V to 5.5 V; supports single-cell Li-ion (2.7–4.2 V), LiFePO4 (2.0–3.6 V), or USB-powered systems without input pre-regulation. |
| Continuous Output Current | 2 A at VIN ≥ 2.5 V; sustains full load across entire input range, critical for burst-mode wireless transmission in portable devices. |
| Peak Efficiency | 95% in buck or boost mode; minimizes thermal rise in space-constrained PCBs and extends battery runtime in always-on sensor nodes. |
| Quiescent Current | 35 µA typical; maintains ultra-low standby power for IoT edge devices requiring multi-year coin-cell operation. |
| Switching Frequency | 2.5 MHz typical; allows use of small 1 µH inductors and 22 µF ceramic capacitors, reducing solution footprint to <15 mm². |
| Thermal Shutdown | 140 °C with 20 °C hysteresis; protects against sustained overload or poor heatsinking in sealed enclosures. |
Pinout & Package
TPS630251YFFR uses a 1.766 mm × 2.086 mm, 20-pin DSBGA (YFF) package with 0.4 mm pitch and bottom-side thermal pad. Pin mapping is validated per TI SLVSBJ9B Rev B (March 2015).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (E1–E3) | Power input for switching stage | Accepts 2.3–5.5 V; connects directly to battery or main rail; requires local 10 µF ceramic decoupling. |
| VINA (E4) | Control-stage supply | Must be tied to VIN or filtered separately; isolates analog reference from power-switch noise. |
| VOUT (A1–A3) | Regulated output | Delivers fixed 2.9 V; connects to load and 2×22 µF output capacitance; no FB resistor needed. |
| L1 (D1–D3), L2 (B1–B3) | Inductor connections | High-current paths for buck-boost energy transfer; require short, wide copper traces and Kelvin routing. |
| PGND (C1–C3) | Power ground return | Carries high-frequency switch currents; must be solid plane connected only at single point near GND. |
| GND (C4) | Analog reference ground | Reference for FB, EN, PFM/PWM; ties to PGND at one point near IC to prevent ground bounce. |
| EN (D4) | Enable control input | Active-high logic; 1.2 V VIH threshold; enables true shutdown with <2 µA drain and output discharge. |
| PFM/PWM (B4) | Mode selection input | Pull low for automatic PFM/PWM transition; pull high for forced 2.5 MHz PWM; must not float. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck-boost transition | Zero-output-droop mode switching ensures uninterrupted 2.9 V supply during battery voltage sag from 3.6 V to 2.8 V. |
| Integrated output discharge | 120 Ω internal switch discharges 20 µF output cap in <10 ms after EN deassertion-prevents residual voltage hazards in hot-swap systems. |
| True shutdown function | Disconnects load from input rail and disables all internal circuitry, reducing system standby current to sub-µA levels. |
| Over-temperature protection | Thermal shutdown at 140 °C with 20 °C hysteresis prevents latch-up and enables safe recovery after cooling. |
| Wide capacitance selection | Stable with 20 µF minimum output capacitance using standard X5R/X7R ceramics-avoids costly polymer or tantalum caps. |
Applications
| Smartphone Baseband Power | Portable Medical Sensor Hub |
|---|---|
|
Use Scenario: Powers 2.9 V baseband processor and RF front-end from single Li-ion cell (2.8–4.2 V). IC Role / Device Role / Timing Role: Primary buck-boost regulator delivering regulated 2.9 V with <1% line/load regulation and <30 mV ripple in PWM mode. Use Value: Eliminates need for discrete buck + boost stages; maintains stable core voltage during cellular transmit bursts drawing >1.5 A peak current. |
Use Scenario: Supplies 2.9 V to ultra-low-power ECG/SpO₂ sensor ASIC and BLE radio in wearable patch. IC Role / Device Role / Timing Role: System PMIC providing always-on 2.9 V rail with 35 µA quiescent current and automatic PFM entry below 350 mA. Use Value: Extends coin-cell battery life beyond 3 years by minimizing no-load power loss and enabling deep-sleep wake-up within 100 µs. |
| Industrial Handheld Scanner | USB-Powered Test Fixture |
|
Use Scenario: Powers 2.9 V image sensor and laser driver from 5 V USB input or 3.7 V internal Li-ion backup. IC Role / Device Role / Timing Role: Dual-input buck-boost converter supporting seamless switchover between USB and battery without reset. Use Value: Maintains 2.9 V output during brownout events (VIN = 2.8 V) with 95% efficiency-ensures barcode scan reliability. |
Use Scenario: Generates stable 2.9 V for calibration-grade ADC reference from variable 4.5–5.5 V USB source. IC Role / Device Role / Timing Role: Precision voltage source with ±1% output accuracy and <5 mV/A load regulation. Use Value: Enables 16-bit ADC performance without external trimming; eliminates drift caused by USB port voltage variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS630252YFFR | Fixed 3.3 V output; identical package, pinout, and efficiency profile. | Requires redesign of downstream 2.9 V loads; suitable only if system can accept 3.3 V instead of 2.9 V. | Select when target load voltage matches 3.3 V and no feedback divider is desired. |
| MAX77827BEWL+T | 2.5–5.5 V input, adjustable 0.6–3.7 V output; 2 A max; 2.2 MHz switching; 25 µA IQ. | Requires external FB resistors; lacks integrated output discharge; different 16-pin WLP package (2.13 × 1.43 mm). | Choose for design flexibility with adjustable output or tighter board area constraints where 2.13 × 1.43 mm fits better than 1.766 × 2.086 mm. |
Compared with TPS630251YFFR, TPS630252YFFR offers identical performance but targets 3.3 V systems, while MAX77827BEWL+T trades fixed-output simplicity for adjustability and smaller footprint at the cost of added BOM complexity and missing discharge functionality.
Availability
TPS630251YFFR is available at Aetrix Electronics and suitable for smartphone power management, portable medical sensors, industrial handheld scanners, and USB-powered test fixtures requiring stable component supply with full production traceability.
Supply support for TPS630251YFFR 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 over 50 years of innovation in high-efficiency power conversion.
The TPS63025x family was designed specifically for space-constrained, battery-powered applications needing seamless input-voltage-flexible regulation-targeting smartphones, wearables, and portable instrumentation where size, efficiency, and reliability are non-negotiable.
FAQ
What is the output voltage tolerance of the TPS630251YFFR under varying load and temperature?
The TPS630251YFFR delivers a fixed 2.9 V output with ±1% accuracy in PWM mode across –40°C to 85°C ambient and 0–2 A load. In PFM mode, accuracy degrades to ±1.3% due to dynamic voltage positioning-intentionally raising nominal output by 1.3% to absorb heavy transient drops. This behavior is documented in TI SLVSBJ9B Section 8.5 Electrical Characteristics.
Does the TPS630251YFFR require external feedback resistors to set its output voltage?
No, the TPS630251YFFR has an internally trimmed 2.9 V reference and does not require external feedback resistors. Unlike the adjustable TPS630250 or 3.3 V TPS630252 variants, the YFFR package variant is factory-configured for fixed 2.9 V operation-reducing component count, layout area, and potential resistor tolerance errors in production.
How does the TPS630251YFFR handle input voltage transitions across the output voltage boundary (e.g., VIN dropping from 3.6 V to 2.8 V)?
The TPS630251YFFR uses average current-mode control with four internal MOSFETs to automatically and seamlessly transition between buck and boost modes. When VIN crosses 2.9 V, the device alternates buck and boost cycles without output droop or discontinuity-verified in TI's Figure 4 and Section 9.1 Overview. This ensures uninterrupted 2.9 V supply during battery discharge in portable systems.
Can the TPS630251YFFR safely discharge its output capacitor when disabled?
Yes, the TPS630251YFFR integrates an output capacitor discharge function activated during shutdown (EN = low). An internal 120 Ω switch connects VOUT to PGND, discharging a 20 µF output capacitor from 2.9 V to UVLO threshold (<2 V) in under 10 ms-critical for safety compliance and preventing unintended wake-up in battery-backed systems.
What is the minimum recommended output capacitance for stable operation of the TPS630251YFFR?
The TPS630251YFFR requires a minimum of 20 µF effective output capacitance for stability, as specified in Section 8.3 Recommended Operating Conditions. TI recommends two 22 µF X5R/X7R ceramic capacitors (total 44 µF nominal) to account for DC bias derating-ensuring ≥20 µF effective capacitance at 2.9 V bias, which maintains loop stability and limits output ripple to <30 mVpk-pk in PWM mode.
TPS630251YFFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.9V
- Voltage - Output (Max):
- -
- Current - Output:
- 3.5A (Switch)
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DSBGA
TPS630251YFFR FAQ
1.How can I place an order for TPS630251YFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS630251YFFR 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 TPS630251YFFR reliable?
The price and inventory of TPS630251YFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS630251YFFR is usually 5 days.
3.What payment methods are accepted for TPS630251YFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS630251YFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS630251YFFR?
TPS630251YFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS630251YFFR 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 TPS630251YFFR?
For technical support, including TPS630251YFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS630251YFFR requirements.
6.How does Aetrix verify that TPS630251YFFR is sourced from the original manufacturer or authorized distributors?
All TPS630251YFFR 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 TPS630251YFFR meets industry standards.
7.What is the process for return or replacement of TPS630251YFFR?
All TPS630251YFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS630251YFFR, 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 TPS630251YFFR part is unused and in its original packaging.
Return procedure for TPS630251YFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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