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Texas Instruments TPS61258YFFT
- Part No.:
- TPS61258YFFT
- Manufacturer:
- Texas Instruments
- Package:
- 9-UFBGA, DSBGA
- Datasheet:
-
TPS61258YFFT.pdf
- Description:
- IC REG BOOST 4.5V 3.9A 9DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:695
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Product details
Overview
TPS61258YFFT from Texas Instruments is a 4.5-V fixed-output, synchronous step-up DC-DC converter in a 9-pin NanoFree™ DSBGA package. It delivers up to 1500 mA peak output current at VIN ≥ 3.3 V, operates from 2.65 V to 4.35 V input, achieves 93% efficiency at 3.5 MHz, and supports true load disconnect during shutdown - ideal for USB charging ports and smartphone power rails.
For engineers reviewing the TPS61258YFFT datasheet, TPS61258YFFT pinout, TPS61258YFFT application, or TPS61258YFFT equivalent, key selection criteria include its 4.5-V regulated output, 1500-mA peak capability at low input voltage, 21-µA standby quiescent current, and compatibility with minimal external components (1 µH inductor, two capacitors) in space-constrained portable designs.
Technical Context
The TPS61258YFFT uses quasi-constant on-time valley current mode control for stable regulation across line and load variations. Its 3.5-MHz switching frequency enables use of ultra-small 1-µH inductors and ceramic capacitors, minimizing solution footprint.
It features dual operating modes: PWM for high-efficiency heavy loads and PFM for light-load operation (37 µA typical IQ), plus a dedicated standby mode (21 µA IQ) where VOUT is pre-biased to VIN with ~150 mA current limit - enabling low-power audio amplifier biasing without full regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.5 V ±2% DC accuracy ensures stable USB-compliant 5-V rail generation via LDO post-regulation or direct 4.5-V system supply. |
| Peak Output Current | 1500 mA at VIN ≥ 3.3 V enables burst-mode powering of high-current peripherals like camera flashes or RF modules. |
| Input Voltage Range | 2.65 V to 4.35 V supports Li-ion batteries down to near depletion while maintaining regulated output. |
| Switching Frequency | 3.5 MHz allows use of 1-µH inductors and compact 0603/0805 MLCCs, reducing total solution size to <25 mm². |
| Quiescent Current | 21 µA in standby mode extends battery life during system sleep states without sacrificing fast wake-up response. |
| Efficiency | 93% at 3.5 MHz and moderate load maximizes energy transfer from single-cell batteries, minimizing thermal stress. |
| Protection Features | Thermal shutdown, valley current limiting (3620 mA typ), and under-voltage lockout (2.1 V) ensure robust operation in portable environments. |
Pinout & Package
TPS61258YFFT uses a 1.206 mm × 1.306 mm, 9-pin NanoFree™ DSBGA (YFF) package with bottom-side solder balls. Thermal resistance RθJA is 108.3°C/W, optimized for thin PCBs with thermal vias to internal ground planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BP (C3) | Mode select / bypass control | When EN = low, BP = high enables standby mode (VOUT ≈ VIN, 150 mA limit); BP = low forces true shutdown (<1 µA ISD). |
| EN (B3) | Enable input | Active-high logic input; must be terminated - floating causes undefined behavior and potential shoot-through risk. |
| GND (C1, C2) | Power ground | Dual ground pins reduce impedance and improve EMI performance; require low-inductance connection to PCB ground plane. |
| SW (B1, B2) | Switch node | Internal high- and low-side MOSFET drain connection; requires tight layout with minimal loop area to suppress ringing and EMI. |
| VIN (A3) | Input power | Accepts 2.65–4.35 V; must be decoupled with ≥4.7 µF ceramic capacitor placed adjacent to pin. |
| VOUT (A1, A2) | Regulated output | Delivers 4.5 V ±2%; requires ≥10 µF output capacitance (X5R/X7R) for ripple suppression and stability. |
Key Features
| Feature | Design Value |
|---|---|
| Light-load PFM mode | Maintains >85% efficiency down to 1 mA load by reducing switching frequency - critical for always-on sensor nodes. |
| Selectable standby mode | Reduces system quiescent current to 21 µA while keeping VOUT biased to VIN, enabling instant wake-up of analog subsystems. |
| True load disconnect | Isolates VOUT from VIN during shutdown (ILEAK < 3.5 µA), preventing battery drain through downstream circuitry. |
| Only three external components | Requires just one 1-µH inductor and two MLCCs (input/output), simplifying BOM and reducing assembly cost. |
| ±2% total DC voltage accuracy | Ensures reliable operation of voltage-sensitive peripherals (e.g., USB PHY, ADC references) without external trimming. |
Applications
| Cell Phones & Smartphones | USB Charging Ports (5 V) |
|---|---|
Use Scenario: Powering display backlight drivers and RF front-end modules from a single discharged Li-ion cell (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary boost regulator supplying 4.5 V to PMIC input or directly to 5-V USB OTG circuitry. Use Value: Delivers 1500 mA peak current at VIN = 3.3 V, enabling simultaneous camera flash and LTE transmission without brownout. | Use Scenario: Generating stable 5-V output from 3.3-V or 3.6-V system rails for USB peripheral charging in portable hubs. IC Role / Device Role / Timing Role: Standalone 4.5-V boost stage followed by low-dropout post-regulator to meet USB 2.0 5.0 V ±5% spec. Use Value: 93% efficiency at 3.5 MHz minimizes heat in sealed enclosures; 21-µA standby IQ preserves host battery during idle periods. |
| Mono & Stereo APA Applications | Low-Power Audio Amplifiers |
Use Scenario: Biasing Class-D or Class-G audio power amplifiers requiring clean, low-noise 4.5-V supply in wearables. IC Role / Device Role / Timing Role: High-efficiency boost source feeding amplifier PVDD rail; operates in PFM mode during quiet audio segments. Use Value: 45 mVpk output ripple in PFM mode prevents audible switching noise coupling into audio signal path. | Use Scenario: Providing pre-biased VDD to headphone amplifiers during system suspend, enabling zero-latency audio resume. IC Role / Device Role / Timing Role: Standby-mode regulator holding VOUT at VIN level (~3.6 V) with 150 mA current limit and 21 µA IQ. Use Value: Eliminates need for separate LDO or charge pump; reduces wake-up time from microseconds to nanoseconds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61254YFFT | Same 4.5-V output but rated for 800 mA continuous (vs. 1500 mA peak for TPS61258YFFT); lower valley current limit (2150 mA vs. 3620 mA). | Suitable for lower-power APA or always-on sensors where peak demand is ≤800 mA. | Choose TPS61254YFFT when sustained load is <800 mA and cost optimization is prioritized over peak burst capability. |
| TPS61099YFFR | Lower IQ (300 nA shutdown, 400 nA operation), but only 300 mA output and 3.3-V fixed output; no standby mode. | Better for ultra-low-power IoT sensors, not suitable for USB or audio applications requiring >400 mA. | Choose TPS61099YFFR only for sub-100 µA system-level sleep budgets - not a functional replacement for TPS61258YFFT's 4.5-V/1500-mA role. |
Compared with TPS61254YFFT and TPS61099YFFR, the TPS61258YFFT uniquely combines 4.5-V output, 1500-mA peak delivery, 21-µA standby IQ, and programmable standby mode - making it the only option among the three capable of supporting USB OTG and burst-mode audio simultaneously in miniaturized mobile designs.
Availability
TPS61258YFFT is available at Aetrix Electronics and suitable for cell phone power management, USB charging port design, and portable audio amplifier biasing requiring stable component supply and long-term production continuity.
Supply support for TPS61258YFFT 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 connectivity technologies, with decades of expertise in power management ICs for portable electronics.
The TPS6125x product line was designed specifically for space-constrained, battery-powered devices requiring high-efficiency, ultra-small-footprint boost conversion - targeting smartphones, wearables, and USB-compliant accessories.
FAQ
What is the maximum continuous output current supported by the TPS61258YFFT?
The TPS61258YFFT supports up to 1500 mA peak output current when VIN ≥ 3.3 V and VOUT = 4.5 V, as confirmed in the Electrical Characteristics table under pulsed load conditions (pulse width ≤20 ms, duty cycle ≤10%). Continuous output is limited by thermal design and PCB layout; typical sustained current is ~800 mA at TA = 85°C with proper thermal vias.
Does the TPS61258YFFT support true load disconnect during shutdown?
Yes, the TPS61258YFFT provides true load disconnect: when EN = low and BP = low, reverse leakage into VOUT is ≤3.5 µA, and input shutdown current is <1 µA (typ). This fully isolates the output from the input rail, preventing battery drain through downstream circuitry.
What is the recommended inductor value for the TPS61258YFFT?
The datasheet specifies an inductance range of 0.7 µH to 2.9 µH, with 1.0 µH as the nominal value. A 1.0 µH, 2.5-A saturation current shielded inductor (e.g., Coilcraft XAL5030-102MEB) is recommended to balance size, efficiency, and transient response across the full load range.
How does the standby mode of the TPS61258YFFT differ from standard shutdown?
In standby mode (EN = low, BP = high), the TPS61258YFFT biases VOUT to VIN with ~150 mA current limit and consumes only 21 µA IQ - enabling fast wake-up of analog circuits. In contrast, standard shutdown (EN = low, BP = low) disconnects VOUT entirely and draws <1 µA, eliminating all output current.
Can the TPS61258YFFT operate with input voltage below 2.65 V?
No - the TPS61258YFFT has a minimum recommended input voltage of 2.65 V per the Recommended Operating Conditions table. Below this, undervoltage lockout activates at 2.1 V (with 0.1 V hysteresis), disabling regulation. Operation below 2.65 V risks unstable output or failure to start.
TPS61258YFFT 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):
- 4.35V
- Voltage - Output (Min/Fixed):
- 4.5V
- 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
TPS61258YFFT FAQ
1.How can I place an order for TPS61258YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61258YFFT 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 TPS61258YFFT reliable?
The price and inventory of TPS61258YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61258YFFT is usually 5 days.
3.What payment methods are accepted for TPS61258YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61258YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61258YFFT?
TPS61258YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61258YFFT 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 TPS61258YFFT?
For technical support, including TPS61258YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61258YFFT requirements.
6.How does Aetrix verify that TPS61258YFFT is sourced from the original manufacturer or authorized distributors?
All TPS61258YFFT 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 TPS61258YFFT meets industry standards.
7.What is the process for return or replacement of TPS61258YFFT?
All TPS61258YFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61258YFFT, 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 TPS61258YFFT part is unused and in its original packaging.
Return procedure for TPS61258YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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