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Texas Instruments TPS61256YFFR
- Part No.:
- TPS61256YFFR
- Manufacturer:
- Texas Instruments
- Package:
- 9-UFBGA, DSBGA
- Datasheet:
-
TPS61256YFFR.pdf
- Description:
- IC REG BOOST 5V 2.4A 9DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:8,764
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Product details
Overview
TPS61256YFFR from Texas Instruments is a 3.5-MHz synchronous step-up DC-DC converter in a 9-pin NanoFree™ DSBGA package, delivering up to 900 mA output current at 5.0 V from input voltages as low as 2.65 V. It features ±2% DC output voltage accuracy, 93% peak efficiency, and selectable standby mode with 21-µA quiescent current-optimized for Li-ion-powered portable devices like smartphones and USB charging ports.
For engineers reviewing the TPS61256YFFR datasheet, TPS61256YFFR pinout, TPS61256YFFR application, or TPS61256YFFR equivalent, key selection criteria include its 5.0-V fixed output, 2.5–4.85-V input range, light-load PFM operation, true load disconnect during shutdown, and minimal external component count (only three surface-mount parts required).
Technical Context
The TPS61256YFFR employs valley-current-mode control with quasi-constant on-time PWM at medium-to-heavy loads and transitions to PFM at light loads to sustain high efficiency across 0.1–900 mA. Its integrated 170-mΩ high-side and 100-mΩ low-side MOSFETs enable compact layout and fast transient response.
It supports dual operational modes via the BP pin: true shutdown (BP = GND, <1 µA shutdown current) or standby bias mode (BP = VIN, 21-µA IQ, ~150 mA pre-biased output capability). Thermal shutdown activates at 140°C with 20°C hysteresis, and under-voltage lockout triggers at 2.1 V (200 mV hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% DC accuracy over load/temperature-ensures stable USB 5-V rail without external feedback. |
| Input Voltage Range | 2.5 V to 4.85 V-supports single-cell Li-ion batteries down to 2.65 V cutoff while maintaining 900 mA output. |
| Max Output Current | 900 mA continuous at VOUT = 5.0 V, VIN ≥ 3.3 V-sufficient for USB port power delivery and audio amplifiers. |
| Switching Frequency | 3.5 MHz nominal-enables use of sub-1-µH inductors and small ceramic capacitors for <25 mm² total solution size. |
| Quiescent Current | 37 µA in normal operation, 21 µA in standby mode-extends battery life in always-on or low-duty-cycle systems. |
| Efficiency Peak | 93% at 3.5 MHz-achieved with synchronous rectification and low RDS(on) MOSFETs, minimizing thermal dissipation. |
| Shutdown Current | 0.85–5.0 µA-ensures negligible battery drain when disabled, critical for long-term storage or sleep states. |
Pinout & Package
TPS61256YFFR uses a 9-pin DSBGA (NanoFree™) package measuring 1.206 mm × 1.306 mm with 0.4-mm pitch. The die-face-down construction requires careful PCB layout for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BP (C3) | Mode selection | Configures device behavior during disable: GND = true shutdown; VIN = standby bias mode (21 µA IQ, ~150 mA output capability). |
| EN (B3) | Enable control | Active-high logic input; must be terminated-pulling low forces full shutdown with <1 µA input current. |
| GND (C1, C2) | Power ground | Dual ground pins reduce impedance and improve thermal conduction to PCB; both must be connected to solid ground plane. |
| SW (B1, B2) | Power switch node | Connects to internal high- and low-side MOSFET drains; requires low-inductance path to external inductor and input capacitor. |
| VIN (A3) | Input supply | Accepts 2.5–4.85 V; must be decoupled with ≥3.5 µF ceramic capacitor close to pin for stability and EMI suppression. |
| VOUT (A1, A2) | Regulated output | Delivers fixed 5.0 V; requires ≥3.5 µF output capacitance (e.g., 10 µF X5R 0603) for ripple control and load transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Light-load PFM mode | Maintains >85% efficiency down to 0.1 mA load by reducing switching frequency-critical for sensor nodes and standby circuits. |
| True load disconnect | Internal NMOS disconnects VOUT from VIN during shutdown (EN = low, BP = GND), preventing backfeed and enabling safe hot-swap. |
| Thermal & overload protection | Integrated thermal shutdown (140°C) and valley current limit (~2400 mA) prevent damage during fault conditions without external circuitry. |
| Minimal external components | Only one inductor (0.7–2.9 µH), one input cap (≥3.5 µF), and one output cap (≥3.5 µF) required-reduces BOM cost and board area. |
| VIN ≥ VOUT operation | Pass-through mode enabled when VIN ≥ VOUT-allows direct battery connection to load during high-input conditions, improving system efficiency. |
Applications
| Smartphone Power Management | USB 5-V Charging Port |
|---|---|
|
Use Scenario: Boosting discharged Li-ion battery (2.65–4.2 V) to stable 5.0 V for camera modules, display backlight, or USB OTG. IC Role / Device Role / Timing Role: Primary step-up regulator supplying regulated 5-V rail with fast load transient response and low quiescent current. Use Value: Enables full functionality down to 2.65 V battery voltage while maintaining 900 mA output-extending usable battery capacity by ~12% versus higher-VIN alternatives. |
Use Scenario: Providing compliant 5-V/500-mA USB downstream port from single-cell battery in portable chargers or accessories. IC Role / Device Role / Timing Role: Fixed-output boost converter with tight DC accuracy (±2%) and low output ripple (<50 mVpk) for USB enumeration stability. Use Value: Eliminates need for external LDO post-regulation; meets USB 2.0 voltage tolerance with no additional components. |
| APA Audio Amplifier Supply | Low-Power IoT Sensor Node |
|
Use Scenario: Powering mono/stereo Class-D audio amplifiers requiring clean 5-V bias from coin-cell or Li-ion sources. IC Role / Device Role / Timing Role: High-efficiency boost stage with standby mode (21 µA IQ) enabling instant wake-up for voice-triggered playback. Use Value: Reduces average system current by 65% vs. standard PWM-only converters during idle-extending playback time per charge. |
Use Scenario: Supplying 5-V logic rails to microcontrollers and sensors in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Ultra-low-IQ boost converter operating in PFM mode during 10-µA sensor sampling bursts. Use Value: Achieves 10-year battery life on CR2032 using 37 µA typical operating IQ and <1 µA shutdown current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61253YFFR | Same package and architecture; rated for 1000 mA at 5.0 V (VIN ≥ 3.3 V) and 1500 mA peak. | Better suited for higher-current USB PD sink or dual-amplifier loads where sustained >900 mA is required. | Select TPS61253YFFR if peak load exceeds 900 mA; otherwise TPS61256YFFR offers tighter cost/performance balance for 900-mA applications. |
| TPS61258YFFR | Identical 4.5-V fixed output version with 1500 mA peak capability; shares same 3.5-MHz PFM/PWM architecture and pinout. | Used where system requires 4.5 V (e.g., legacy APA modules or specific PMIC inputs) instead of 5.0 V. | Choose TPS61258YFFR only when 4.5-V output is mandatory; not a drop-in replacement due to different VOUT specification. |
Compared with TPS61253YFFR and TPS61258YFFR, the TPS61256YFFR provides optimal 5.0-V/900-mA performance with lowest bill-of-materials cost in the TPS6125x family-ideal for cost-sensitive, space-constrained USB and smartphone applications where 900 mA suffices.
Availability
TPS61256YFFR is available at Aetrix Electronics and suitable for smartphone power management, USB 5-V charging ports, and APA audio amplifier supplies requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for TPS61256YFFR 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for portable and industrial applications.
The TPS6125x product line was designed specifically for ultra-compact, high-efficiency step-up conversion in battery-powered portable electronics-emphasizing minimal solution size, low quiescent current, and robust protection features.
FAQ
What is the fixed output voltage of the TPS61256YFFR?
The TPS61256YFFR provides a factory-trimmed fixed output voltage of 5.0 V with ±2% total DC accuracy across temperature, load, and input voltage variations. This eliminates the need for external feedback resistors and ensures compliance with USB 5-V specifications without additional regulation stages.
Does the TPS61256YFFR support true load disconnect during shutdown?
Yes, the TPS61256YFFR supports true load disconnect when EN is low and BP is grounded. In this configuration, an internal NMOS switch isolates VOUT from VIN, preventing reverse current flow and enabling safe hot-swap or battery replacement without affecting downstream circuitry.
What is the minimum input voltage required for the TPS61256YFFR to deliver 900 mA output?
The TPS61256YFFR requires a minimum input voltage of 3.3 V to sustain 900 mA continuous output current at 5.0 V. Below 3.3 V, maximum output current decreases progressively-e.g., 700 mA at VIN = 2.65 V-as specified in the recommended operating conditions table.
How does the BP pin affect TPS61256YFFR operation?
The BP pin configures two distinct low-power states: when pulled to GND with EN low, the device enters true shutdown (<1 µA); when pulled to VIN with EN low, it enters standby mode-biasing VOUT at VIN level with ~150 mA current capability and only 21 µA quiescent current.
What external components are required for basic TPS61256YFFR operation?
The TPS61256YFFR requires only three external components: one 0.7–2.9 µH inductor, one ≥3.5 µF input ceramic capacitor, and one ≥3.5 µF output ceramic capacitor. No compensation network, feedback resistors, or soft-start capacitors are needed-enabling a total solution size under 25 mm².
TPS61256YFFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 4.85V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 2.4A (Switch)
- Frequency - Switching:
- 3.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-DSBGA
TPS61256YFFR FAQ
1.How can I place an order for TPS61256YFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61256YFFR 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 TPS61256YFFR reliable?
The price and inventory of TPS61256YFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61256YFFR is usually 5 days.
3.What payment methods are accepted for TPS61256YFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61256YFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61256YFFR?
TPS61256YFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61256YFFR 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 TPS61256YFFR?
For technical support, including TPS61256YFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61256YFFR requirements.
6.How does Aetrix verify that TPS61256YFFR is sourced from the original manufacturer or authorized distributors?
All TPS61256YFFR 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 TPS61256YFFR meets industry standards.
7.What is the process for return or replacement of TPS61256YFFR?
All TPS61256YFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61256YFFR, 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 TPS61256YFFR part is unused and in its original packaging.
Return procedure for TPS61256YFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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