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Texas Instruments TPS61259YFFT
- Part No.:
- TPS61259YFFT
- Manufacturer:
- Texas Instruments
- Package:
- 9-UFBGA, DSBGA
- Datasheet:
-
TPS61259YFFT.pdf
- Description:
- IC REG BOOST 5.1V 3.9A 9DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:610
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Product details
Overview
TPS61259YFFT from Texas Instruments is a 3.5-MHz synchronous step-up DC-DC converter in a 9-pin NanoFree™ DSBGA package, delivering up to 1500 mA peak output current at 5.1 V with input as low as 2.65 V. It features ±2% DC output voltage accuracy, 93% peak efficiency, and supports VIN ≥ VOUT operation for battery-powered portable systems including smartphones and USB charging ports.
For engineers reviewing the TPS61259YFFT datasheet, TPS61259YFFT pinout, TPS61259YFFT application, or TPS61259YFFT equivalent, key selection criteria include its 5.1-V fixed output, 21-µA standby quiescent current, true load disconnect during shutdown, light-load PFM mode, and compatibility with ultra-small 1.206 mm × 1.306 mm PCB footprints requiring only three external components.
Technical Context
The TPS61259YFFT employs valley-current-mode control with quasi-constant on-time PWM for stable regulation across line and load variations. Its integrated high-side (170 mΩ) and low-side (100 mΩ) MOSFETs enable synchronous rectification and efficient boost conversion from 2.65 V to 4.85 V input.
It supports three operational modes: active boost (EN = high), standby pre-bias (EN = low, BP = high, 21 µA IQ, ~150 mA limited output), and true shutdown (EN = BP = low, <1 µA ISD). The device includes thermal shutdown (140°C), overcurrent protection (3.9 A valley limit), and under-voltage lockout (2.1 V with 0.1 V hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.1 V ±2% DC accuracy ensures stable 5-V rail for USB peripherals and audio amplifiers without external feedback. |
| Peak Output Current | 1500 mA at VOUT = 5.1 V, VIN ≥ 3.3 V enables short-duration pulse loads like camera flash or RF power amplifiers. |
| Switching Frequency | 3.5 MHz allows use of sub-1-µH inductors and compact ceramic capacitors, reducing total solution size to <25 mm². |
| Quiescent Current | 21 µA in standby mode extends battery life in always-on subsystems such as sensor wake-up circuits. |
| Input Voltage Range | 2.65 V to 4.85 V supports single-cell Li-ion batteries across full discharge curve, including deep discharge states. |
| Efficiency | 93% peak efficiency at 3.5 MHz minimizes thermal rise in space-constrained mobile PCBs. |
| Shutdown Current | <1 µA (typ) prevents battery drain during system sleep, critical for long-term portable device storage. |
Pinout & Package
TPS61259YFFT uses a 9-pin DSBGA (NanoFree™) package measuring 1.206 mm × 1.306 mm with 0.4-mm pitch. The package is bottom-soldered with no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BP (C3) | Mode select / bypass control | When EN = low, BP = high enables standby mode (VOUT ≈ VIN, 150 mA max); BP = low enables true shutdown. |
| EN (B3) | Enable input | Active-high logic input; must be terminated-floating state is undefined and may cause erratic operation. |
| GND (C1, C2) | Power ground | Dual ground pins reduce impedance and improve thermal dissipation in high-current switching paths. |
| SW (B1, B2) | Switch node | Internal connection to drain terminals of both high- and low-side MOSFETs; requires low-inductance layout to minimize EMI. |
| VIN (A3) | Input supply | Accepts 2.65–4.85 V; connects directly to battery or intermediate rail; decoupling capacitor required close to pin. |
| VOUT (A1, A2) | Regulated output | Delivers fixed 5.1 V; dual pins reduce trace resistance and support higher continuous current delivery. |
Key Features
| Feature | Design Value |
|---|---|
| True load disconnect | EN + BP low disconnects VOUT from VIN completely (<1 µA leakage), preventing backfeed into battery during system off-state. |
| Light-load PFM mode | Reduces IQ to 37 µA (typ) at light loads while maintaining regulation-critical for battery runtime in idle/sleep states. |
| Pre-biased standby output | EN low + BP high biases VOUT to VIN level with current limiting (~150 mA), enabling low-power analog biasing without full regulation. |
| Ultra-small solution size | Requires only one 1-µH inductor, one 4.7-µF input cap, and one 10-µF output cap-total area <25 mm². |
| Integrated MOSFETs | 170-mΩ high-side and 100-mΩ low-side switches eliminate external FETs and gate drivers, simplifying design and reducing BOM count. |
Applications
| Smartphone Power Management | USB 5-V Charging Port |
|---|---|
Use Scenario: Boosting voltage from a discharged 3.3-V Li-ion cell to power a 5-V USB OTG port or accessory interface. IC Role / Device Role / Timing Role: Primary step-up regulator supplying regulated 5.1 V to USB VBUS with fast transient response and minimal footprint. Use Value: Enables USB host functionality even at battery voltages below 3.6 V, extending usable battery range by >15%. | Use Scenario: Providing compliant 5-V output from a single-cell battery in portable power banks or wireless chargers. IC Role / Device Role / Timing Role: High-efficiency boost converter with integrated current limiting and thermal protection for safe USB power delivery. Use Value: Delivers up to 1500 mA peak current with 93% efficiency, minimizing heat generation and enabling compact thermal design. |
| Audio Amplifier Bias Supply | Low-Power Sensor Subsystem |
Use Scenario: Supplying clean, pre-biased 4.5–5.0 V to mono/stereo Class-D audio amplifiers in smartphones or wearables. IC Role / Device Role / Timing Role: Standby-mode regulator (EN = low, BP = high) delivering VIN-referenced output with 21-µA quiescent current. Use Value: Reduces amplifier supply noise and eliminates need for separate LDO, cutting component count and board area. | Use Scenario: Powering always-on environmental sensors (e.g., accelerometer, ambient light) during deep-sleep MCU states. IC Role / Device Role / Timing Role: Ultra-low-IQ boost regulator maintaining 5.1-V rail with <1 µA shutdown current and fast wake-up (<400 µs start-up time). Use Value: Extends shelf life and field deployment duration by minimizing parasitic battery drain during multi-week idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61258YFFT | Fixed 4.5-V output; same 1500 mA peak capability but lower regulated voltage. | Optimized for 4.5-V systems (e.g., legacy USB, specific audio codecs) rather than 5.1-V compliance-critical ports. | Select when target output matches 4.5 V and higher efficiency at mid-load is prioritized over 5-V USB specification margin. |
| TPS612592YFFT | Fixed 5.2-V output; identical package, pinout, and electrical specs except output voltage and minor ripple tolerance. | Suitable for applications requiring tighter 5.2-V regulation (e.g., certain PMIC reference rails or proprietary charging protocols). | Choose when system-level validation confirms 5.2-V tolerance and higher output headroom improves downstream regulator PSRR. |
Compared with TPS61258YFFT and TPS612592YFFT, the TPS61259YFFT provides the optimal 5.1-V output for USB-compliant designs operating near battery end-of-discharge, balancing regulation margin, efficiency, and thermal performance in the smallest possible footprint.
Availability
TPS61259YFFT is available at Aetrix Electronics and suitable for smartphone power management, USB charging ports, audio amplifier bias supplies, and low-power sensor subsystems requiring stable component supply and rapid prototyping support.
Supply support for TPS61259YFFT 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 boost conversion in battery-powered portable electronics, emphasizing minimal external component count, sub-25-mm² solution size, and robust light-load efficiency.
FAQ
What is the fixed output voltage of the TPS61259YFFT?
The TPS61259YFFT has a factory-trimmed fixed output voltage of 5.1 V with ±2% total DC accuracy across temperature, line, and load conditions. This value is confirmed in the Electrical Characteristics table under "Regulated DC output voltage" for TPS61259, with typical values of 5.10 V and min/max bounds of 5.02 V to 5.18 V in open-loop PWM operation.
Does the TPS61259YFFT support true load disconnect during shutdown?
Yes, the TPS61259YFFT supports true load disconnect when both EN and BP pins are driven low. In this state, the internal switches fully isolate VOUT from VIN, resulting in <1 µA typical shutdown current and zero backfeed path-verified in the Electrical Characteristics table under ISD parameter and functional description section.
What is the minimum input voltage required for full 1500 mA peak output from the TPS61259YFFT?
The TPS61259YFFT delivers up to 1500 mA peak output current at VOUT = 5.1 V only when VIN ≥ 3.3 V, as specified in the Device Options table and confirmed in the Electrical Characteristics section for pulsed load testing (pulse width ≤20 ms, duty cycle ≤10%). Below 3.3 V, peak current capability decreases per the IOUT vs VIN curves in Figure 12.
Can the TPS61259YFFT operate with an input voltage higher than its output voltage?
Yes, the TPS61259YFFT supports VIN ≥ VOUT operation. When VIN ≥ VOUT, the device enters a linear pre-charge mode with current limiting (~165–265 mA depending on Δ(VIN–VOUT)), allowing it to function as a low-quiescent-current bias supply-described in the Description section and validated in the Pre-charge mode current limit specification.
What package type and dimensions does the TPS61259YFFT use?
The TPS61259YFFT uses a 9-pin DSBGA (Die Size Ball Grid Array) package branded as NanoFree™, with nominal body dimensions of 1.206 mm × 1.306 mm and 0.4-mm ball pitch. This information is explicitly stated in the Device Information table and Package Summary section of the datasheet.
TPS61259YFFT 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):
- 2.65V
- Voltage - Input (Max):
- 4.85V
- Voltage - Output (Min/Fixed):
- 5.1V
- Voltage - Output (Max):
- -
- Current - Output:
- 3.9A (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
TPS61259YFFT FAQ
1.How can I place an order for TPS61259YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61259YFFT 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 TPS61259YFFT reliable?
The price and inventory of TPS61259YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61259YFFT is usually 5 days.
3.What payment methods are accepted for TPS61259YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61259YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61259YFFT?
TPS61259YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61259YFFT 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 TPS61259YFFT?
For technical support, including TPS61259YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61259YFFT requirements.
6.How does Aetrix verify that TPS61259YFFT is sourced from the original manufacturer or authorized distributors?
All TPS61259YFFT 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 TPS61259YFFT meets industry standards.
7.What is the process for return or replacement of TPS61259YFFT?
All TPS61259YFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61259YFFT, 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 TPS61259YFFT part is unused and in its original packaging.
Return procedure for TPS61259YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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