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Texas Instruments TPS630242YFFT
- Part No.:
- TPS630242YFFT
- Manufacturer:
- Texas Instruments
- Package:
- 20-UFBGA, DSBGA
- Datasheet:
-
TPS630242YFFT.pdf
- Description:
- IC REG BUCK BOOST 3.3V 20DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,464
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Product details
Overview
TPS630242YFFT from Texas Instruments is a fixed-output 3.3 V, high-efficiency synchronous buck-boost DC/DC converter in a 20-pin WCSP package (1.766 mm × 2.086 mm), supporting 2.3 V–5.5 V input and delivering up to 1.5 A continuous output current in boost mode. It features automatic buck/boost mode transition, 2.5 MHz switching frequency, and 35 µA quiescent current - optimized for battery-powered portable electronics requiring stable rail generation across varying battery voltages.
For engineers reviewing the TPS630242YFFT datasheet, TPS630242YFFT pinout, TPS630242YFFT application, or TPS630242YFFT equivalent, key selection considerations include its fixed 3.3 V output, seamless mode transition behavior, integrated soft-start, output capacitor discharge function, and thermal/overcurrent protection - all validated for use in space-constrained, low-power mobile systems.
Technical Context
The TPS630242YFFT implements average current-mode control using four internal N-channel MOSFETs, with one switch held on and one off during each phase to minimize switching losses. Its control architecture ensures robust regulation across buck, boost, and buck-boost boundary regions - including forced alternating cycles when VIN ≈ VOUT to maintain stability.
It supports dual ground separation (PGND for power switches, GND for analog control), independent supply pins (VIN for power stage, VINA for control stage), and programmable operation via PFM/PWM pin - enabling either automatic light-load PFM mode (with ~30 mVpk-pk ripple) or forced PWM mode (fixed 2.5 MHz, ±10% tolerance).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1% (PWM mode), ±1.3% (PFM mode) - eliminates external feedback resistors and simplifies layout for dedicated 3.3 V rail generation. |
| Input Voltage Range | 2.3 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V), Li-polymer, or two-cell alkaline/NiMH batteries without pre-regulation. |
| Max Output Current | 1.5 A continuous (boost mode, VIN ≥ 2.5 V); up to 3 A peak in buck mode - enables direct powering of SoCs, RF modules, and display drivers. |
| Efficiency | Up to 95% in buck or boost; 97% at VIN = VOUT - minimizes thermal rise and extends battery runtime in portable devices. |
| Quiescent Current | 35 µA typical (no switching, TJ = 25°C) - critical for maintaining ultra-low standby power in always-on subsystems. |
| Switching Frequency | 2.5 MHz typical - allows use of compact 1 µH inductors and small ceramic capacitors, reducing solution footprint. |
| Thermal Shutdown | 140°C junction temperature threshold - provides fail-safe protection under sustained overload or poor PCB thermal design. |
Pinout & Package
TPS630242YFFT uses a 20-pin Wafer Chip Scale Package (WCSP), nominal body size 1.766 mm × 2.086 mm, with solder-ball pitch of 0.4 mm. The package integrates thermal vias beneath the PGND pads for enhanced heat dissipation in thin-profile mobile PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (E1–E3) | Power Input | Main supply for power stage; accepts 2.3–5.5 V; requires local 10 µF ceramic decoupling. |
| VINA (E4) | Analog Supply | Dedicated low-noise supply for control circuitry; must be connected to same source as VIN or filtered separately. |
| EN (D4) | Enable Input | Active-high logic control; <0.4 V disables device and activates output discharge (120 Ω path to PGND). |
| PFM/PWM (B4) | Mode Select | Low = automatic PFM/PWM transition; high = forced PWM; floating not allowed - ties directly to system power management IC. |
| L1 (D1–D3), L2 (B1–B3) | Inductor Connections | High-current paths for external 1 µH inductor; symmetric layout required to balance parasitic inductance and EMI. |
| VOUT (A1–A3) | Regulated Output | 3.3 V power rail; requires 2 × 22 µF ceramic output capacitance (X5R/X7R) for stability and transient response. |
| FB (A4) | Feedback Input | Internally tied to VOUT for fixed-output version; must not be externally connected - unused pin in TPS630242YFFT. |
| PGND (C1–C3) | Power Ground | Return path for high-switching-current loops; must be connected to GND at single point near GND pin (C4) to avoid noise coupling. |
| GND (C4) | Analog Ground | Reference for error amplifier, oscillator, and control logic; isolated from PGND except at designated star point. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Buck-Boost Transition | Seamless mode switching with no output glitch or dropout when VIN crosses VOUT - maintains uninterrupted power to sensitive loads like PMICs or memory interfaces. |
| Integrated Soft-Start | 450 µs (buck) / 700 µs (boost) monotonic ramp-up time - prevents inrush current and overshoot into large output capacitors (e.g., 44 µF total). |
| Output Capacitor Discharge | 120 Ω internal discharge path activated during shutdown - discharges 20 µF output cap from 3.3 V to UVLO (~1.7 V) in <10 ms, meeting system safety requirements. |
| True Shutdown | 0.1–2 µA shutdown current (TJ = –40°C to 85°C) - isolates load from battery, enabling zero-drain storage modes in handheld devices. |
| Over-Temperature Protection | 140°C thermal shutdown with hysteresis - latches off until junction cools by ~15°C, preventing thermal runaway during sustained overload. |
Applications
| Smartphone Baseband Power | Tablet USB Peripheral Rail |
|---|---|
|
Use Scenario: Powering application processor I/O and memory interface rails in smartphones where battery voltage drops from 4.2 V (full) to 2.8 V (empty). IC Role / Device Role / Timing Role: Primary buck-boost regulator generating stable 3.3 V from dynamically varying Li-ion cell voltage. Use Value: Eliminates need for separate buck + boost converters, reducing BOM count by 2 ICs and saving >15 mm² PCB area. |
Use Scenario: Supplying 3.3 V to USB OTG controllers, Type-C port logic, or accessory detection circuits in tablets. IC Role / Device Role / Timing Role: Always-on auxiliary power rail that remains active during suspend/resume transitions. Use Value: 35 µA quiescent current enables >30-day shelf life without battery drain; PFM/PWM pin allows host MCU to force PWM during high-speed data bursts. |
| Wireless Headset Audio Codec | Portable Medical Sensor Hub |
|
Use Scenario: Delivering clean 3.3 V to low-noise audio codecs and Bluetooth SoCs in true wireless stereo earbuds. IC Role / Device Role / Timing Role: Noise-sensitive analog power supply with minimal switching ripple and fast transient response. Use Value: 2.5 MHz switching moves fundamental noise above audio band; 30 mVpk-pk PFM ripple meets codec PSRR requirements without additional LDO post-regulation. |
Use Scenario: Powering multi-sensor nodes (ECG, SpO₂, temperature) in battery-operated wearable health monitors. IC Role / Device Role / Timing Role: Single-rail power manager handling variable input from energy-harvesting sources or coin cells. Use Value: 2.3 V minimum input enables operation down to nearly-dead battery; thermal shutdown protects against enclosure overheating during extended clinical use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS630241YFFT | Fixed 2.9 V output; identical package, pinout, and electrical specs otherwise. | Targeted at lower-voltage I/O domains (e.g., SDIO, low-VGS MOSFET gates) rather than standard 3.3 V logic rails. | Select only if system requires 2.9 V - not a drop-in replacement for 3.3 V designs due to output mismatch. |
| MAX77827BEWL+T | 3.3 V fixed output, but uses 2.2 MHz switching, higher 65 µA IQ, and larger 2.13 mm × 1.63 mm WLP package. | Optimized for wearables with tighter height constraints (<0.6 mm max); lacks integrated output discharge function. | Prefer when board height is <0.7 mm and discharge function is handled externally; verify thermal performance at 1.5 A load. |
Compared with TPS630242YFFT, TPS630241YFFT offers identical functionality at 2.9 V - making it unsuitable for 3.3 V rail replacement - while MAX77827BEWL+T trades higher quiescent current and missing discharge capability for slightly smaller footprint, requiring careful evaluation of system-level power budget and safety compliance.
Availability
TPS630242YFFT is available at Aetrix Electronics and suitable for smartphone baseband power, tablet USB peripheral rails, wireless headset audio codecs, and portable medical sensor hubs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS630242YFFT 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 over 90 years of innovation in high-reliability, energy-efficient IC design.
The TPS63024x family was engineered specifically for battery-powered portable electronics needing single-inductor buck-boost conversion - addressing the challenge of maintaining regulated 3.3 V (or 2.9 V) output across the full discharge curve of modern lithium-based cells.
FAQ
What is the maximum continuous output current supported by the TPS630242YFFT?
The TPS630242YFFT delivers up to 1.5 A continuous output current in boost mode when input voltage is ≥2.5 V and output is set to 3.3 V. In buck mode (VIN > VOUT), it supports up to 3 A peak current, limited by internal switch current rating and thermal design. Actual achievable current depends on PCB layout, ambient temperature, and input voltage - e.g., at VIN = 2.8 V, max output is ~1.2 A before thermal limiting engages.
Does the TPS630242YFFT require external feedback resistors to set the output voltage?
No, the TPS630242YFFT has a factory-trimmed fixed 3.3 V output. The FB pin (A4) is internally connected to VOUT and must remain unconnected in this variant - unlike the adjustable TPS63024, which requires an external resistor divider. This eliminates component count, layout sensitivity, and drift-related inaccuracies in production.
How does the PFM/PWM pin affect efficiency and output ripple in the TPS630242YFFT?
When the PFM/PWM pin is pulled low, the TPS630242YFFT enters automatic PFM/PWM mode, reducing switching frequency at light loads to achieve 35 µA quiescent current and >90% efficiency down to 100 µA load. Output ripple increases to ~30 mVpk-pk (typical). When pulled high, it forces fixed 2.5 MHz PWM operation - lowering ripple to <10 mVpk-pk but raising IQ to ~70 µA.
Can the TPS630242YFFT safely operate with a 1.0 µH inductor and 22 µF output capacitance?
Yes - the TPS630242YFFT is validated with a 1.0 µH inductor (e.g., Coilcraft XAL4020-102ME) and 2 × 22 µF X5R ceramic capacitors (44 µF total). This combination meets all recommended operating conditions: achieves <10 mV load regulation, sustains 1.5 A output, and maintains stability across –40°C to 85°C. Inductor DCR ≤ 34 mΩ and capacitor DC bias derating ≥50% are required per TI design guidelines.
What protection features are integrated into the TPS630242YFFT?
The TPS630242YFFT includes over-temperature protection (140°C shutdown), cycle-by-cycle overcurrent limiting (3 A typical switch current limit), undervoltage lockout (1.7 V threshold with 70 mV hysteresis), true shutdown with output capacitor discharge (120 Ω path), and short-circuit protection that clamps output current if VOUT fails to rise above 1.2 V. All protections are fully autonomous and require no external components.
TPS630242YFFT 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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 2.12A (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
TPS630242YFFT FAQ
1.How can I place an order for TPS630242YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS630242YFFT 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 TPS630242YFFT reliable?
The price and inventory of TPS630242YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS630242YFFT is usually 5 days.
3.What payment methods are accepted for TPS630242YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS630242YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS630242YFFT?
TPS630242YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS630242YFFT 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 TPS630242YFFT?
For technical support, including TPS630242YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS630242YFFT requirements.
6.How does Aetrix verify that TPS630242YFFT is sourced from the original manufacturer or authorized distributors?
All TPS630242YFFT 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 TPS630242YFFT meets industry standards.
7.What is the process for return or replacement of TPS630242YFFT?
All TPS630242YFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS630242YFFT, 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 TPS630242YFFT part is unused and in its original packaging.
Return procedure for TPS630242YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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