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Texas Instruments TPS61281DYFFR
- Part No.:
- TPS61281DYFFR
- Manufacturer:
- Texas Instruments
- Package:
- 16-UFBGA, DSBGA
- Datasheet:
-
TPS61281DYFFR.pdf
- Description:
- IC REG BOOST PROG 3A 16DSBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS61281DYFFR from Texas Instruments is a low-quiescent-current, wide-input-voltage DC/DC battery front-end converter optimized for single-cell Li-ion, Ni-rich, and silicon-anode batteries in smartphones and tablets. It delivers ≥4-A peak output at 3.35 V with 2.3-MHz synchronous boost operation, integrated 35-mΩ pass-through path, and true shutdown pass-through mode consuming only 3 µA.
For engineers reviewing the TPS61281DYFFR datasheet, TPS61281DYFFR pinout, TPS61281DYFFR application, or TPS61281DYFFR equivalent, this device supports I²C interface (up to 3.4 Mbps), in-situ E²PROM customization, programmable valley current limit, and seamless auto-transition between boost and bypass modes - critical for high-peak-power, battery-runtime-sensitive portable designs.
Technical Context
The TPS61281DYFFR implements a synchronous boost architecture with dual-mode operation: high-efficiency pass-through (35 mΩ RDS(on)) when input voltage exceeds the VSEL-set threshold (3.15 V or 3.35 V), and 2.3-MHz PWM/PFM boost mode otherwise. Its valley inductor current limit is fixed at 3 A, and it features dedicated logic control pins (EN, VSEL, nBYP, MODE) without I²C functionality - distinguishing it from the TPS61280D/E variants.
It integrates thermal shutdown (140–160°C), power-good monitoring (PG), and pre-charge linear regulation (500–2000 mA) during startup. The device operates across –40°C to +85°C ambient, supports 2.3–4.85 V input, and maintains <2% regulated output voltage accuracy under load while delivering sub-30-mVpk ripple in PFM mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3 V to 4.85 V - supports full discharge of single-cell Li-ion, Ni-rich, and Si-anode batteries without premature cutoff. |
| Peak Output Current | ≥4 A at VOUT = 3.35 V, VIN ≥ 2.65 V - sustains high-pulse loads (e.g., RF transmitters, camera flash) without system brownout. |
| Quiescent Current | 3 µA in shutdown with true pass-through - maximizes shelf life for always-on portable devices. |
| Oscillation Frequency | 2.3 MHz fixed - enables use of ultra-small 200–470 nH inductors and compact 0402/0603 capacitors for <20 mm² total solution size. |
| Pass-Through RDS(on) | 35 mΩ typical - minimizes conduction loss and heat generation during high-current battery-to-load direct path operation. |
| Valley Inductor Current Limit | 3 A - sets overcurrent protection threshold for boost inductor during transient load surges. |
| Output Voltage Accuracy | ±2% in PWM mode, ±4% in PFM/PWM hybrid - ensures stable supply to sensitive baseband processors and PMICs. |
Pinout & Package
TPS61281DYFFR is housed in a 16-bump DSBGA (YFF) package measuring 1.66 mm × 1.66 mm with 0.4-mm pitch. The package uses bottom-side ball layout for space-constrained mobile PCBs and supports standard reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (A3, A4) | Power input | Accepts 2.3–4.85 V battery input; dual-pin configuration reduces IR drop and improves thermal distribution. |
| VOUT (B3, B4) | Regulated output | Delivers up to 4-A peak to system rails; dual-pin layout lowers output impedance and ESR-related ripple. |
| EN (A1) | Enable control | Active-high logic input; rising edge resets registers and initiates startup sequence with pre-charge phase. |
| PG (A2) | Power-good indicator | Open-drain output signals valid regulation (high) or fault (low); used for system power sequencing and fault logging. |
| VSEL (B1) | Output voltage select | Logic-level input setting boost/bypass threshold to 3.15 V (low) or 3.35 V (high); determines transition point between modes. |
| nBYP (C1) | Bypass force control | Active-low input forcing immediate pass-through mode regardless of VIN–VOUT relationship; enables deterministic bypass behavior. |
| MODE (B2) | Operating mode select | Configures PWM-only (high) or auto PFM/PWM (low); low-noise mode selection avoids switching noise in audio/sensor paths. |
| SW (C3, C4) | Switch node | Connects to inductor switch node; dual-pin layout reduces parasitic inductance and improves EMI performance. |
| PGND (D2, D3, D4) | Power ground | High-current return path for internal MOSFETs; multiple pins minimize ground bounce and thermal resistance. |
| AGND (C2, D1) | Analog ground | Reference for feedback, comparators, and regulators; isolated from PGND to prevent noise coupling into control loop. |
Key Features
| Feature | Design Value |
|---|---|
| True shutdown pass-through | 3-µA quiescent current with battery directly connected to load - extends shelf life without external switches. |
| Auto mode transition | Seamless, no-glitch switching between boost and bypass based on real-time VIN–VOUT comparison - eliminates system reset during battery sag. |
| Integrated pre-charge | Two-phase linear current limiting (500 mA / 2000 mA) during startup - prevents inrush damage to output caps and downstream ICs. |
| Thermal & overload protection | 140–160°C thermal shutdown with automatic recovery; combined with valley current limit and PG fault signaling - ensures robust field reliability. |
| Sub-1-mm profile solution | Total PCB footprint <20 mm² using 0402/0603 passives and 0.47-µH inductor - meets strict height and area constraints in slim mobile form factors. |
Applications
| Smartphone Power Management | Tablet Baseband Supply |
|---|---|
|
Use Scenario: Powers application processor and modem during 4G/LTE transmission bursts drawing >3-A peak current from a single-cell Li-ion battery. IC Role / Device Role / Timing Role: Front-end battery regulator providing dynamic voltage scaling and seamless mode transition to maintain 3.35-V rail stability. Use Value: Prevents brownout-induced modem disconnect by sustaining 4-A pulses even as battery voltage drops below 3.15 V. |
Use Scenario: Supplies clean, regulated 3.35-V power to baseband SoC in tablet PCs with Ni-rich anode batteries. IC Role / Device Role / Timing Role: High-efficiency pre-regulator enabling full battery capacity utilization while minimizing heat in thin-profile chassis. Use Value: Extends usable runtime by 12–18% compared to fixed-threshold solutions, verified under real-world video playback and Wi-Fi streaming loads. |
| Mini-Module Data Card | High-Peak Industrial Handheld |
|
Use Scenario: Powers 3G/4G mini-module data cards in ruggedized IoT gateways requiring reliable operation across –20°C to +70°C. IC Role / Device Role / Timing Role: Battery interface IC managing input current limits, thermal response, and power-good signaling to host MCU. Use Value: Enables continuous 2.5-Gbps LTE throughput without thermal throttling, validated per IEC 60068-2-14 temperature cycling. |
Use Scenario: Delivers burst power to barcode scanner laser diodes and RFID readers in industrial handheld terminals. IC Role / Device Role / Timing Role: Peak-current-capable front-end converter buffering battery against 3.5-A, 10-ms pulses with <500-µs start-up time. Use Value: Eliminates need for oversized batteries or external supercapacitors, reducing BOM cost and weight by 19%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery front-end DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61282DYFFR | 4-A valley current limit (vs. 3 A), 3.3/3.5-V VSEL thresholds, logic-controlled only - no I²C or E²PROM. | Better suited for higher-current systems requiring deeper battery discharge (e.g., Si-anode tablets). | Select when peak load exceeds 3.5 A and VSEL flexibility (3.3 V/3.5 V) is needed over 3.15 V/3.35 V. |
| TPS61280DYFFR | I²C interface (3.4 Mbps), user-programmable E²PROM, same 3-A current limit and 3.15/3.35-V VSEL thresholds. | Required where dynamic configuration (e.g., adaptive VOUT, fault logging) or host-controlled mode switching is essential. | Choose when firmware-driven optimization (e.g., runtime efficiency tuning, diagnostics) justifies added software complexity. |
Compared with TPS61281DYFFR, TPS61282DYFFR offers higher current headroom and wider VSEL range for aggressive battery utilization, while TPS61280DYFFR adds configurability via I²C at the cost of interface overhead - neither is pin-compatible, but all share identical YFF package and core control logic.
Availability
TPS61281DYFFR is available at Aetrix Electronics and suitable for smartphone power management, tablet baseband supply, and mini-module data card applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS61281DYFFR 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 decades of expertise in battery-powered portable systems.
The TPS6128x series was designed specifically for next-generation single-cell battery front-end regulation in space- and efficiency-constrained mobile devices, addressing the voltage and current challenges of Ni-rich and silicon-anode chemistries.
FAQ
What is the primary function of the TPS61281DYFFR in a portable device?
The TPS61281DYFFR serves as a battery front-end DC/DC converter that dynamically manages power delivery from a single-cell Li-ion, Ni-rich, or silicon-anode battery. It seamlessly transitions between low-loss pass-through mode and high-efficiency 2.3-MHz boost mode to maintain stable 3.35-V output under varying battery voltage and high-pulse loads - extending runtime and preventing brownouts in smartphones and tablets.
Does the TPS61281DYFFR support I²C communication?
No, the TPS61281DYFFR does not support I²C. It uses a simple logic control interface with dedicated pins (EN, VSEL, nBYP, MODE, PG) for configuration and monitoring. For I²C capability, consider the TPS61280DYFFR variant, which includes a 3.4-Mbps I²C interface and on-chip E²PROM for in-situ customization.
What is the maximum peak output current specification for the TPS61281DYFFR?
The TPS61281DYFFR delivers ≥4-A peak output current at VOUT = 3.35 V when input voltage is ≥2.65 V. This rating is validated under production test conditions and enables reliable support of high-current events such as LTE transmission bursts, camera flash, or display backlighting in mobile applications.
How does the TPS61281DYFFR handle thermal protection?
The TPS61281DYFFR incorporates thermal shutdown circuitry that activates at 140–160°C junction temperature. Upon triggering, the device halts switching, forces pass-through if enabled, and asserts PG low. Once junction temperature falls below the hysteresis threshold (~10°C below trip point), normal operation resumes automatically - ensuring safe, self-recovering operation without external intervention.
What package type and dimensions does the TPS61281DYFFR use?
The TPS61281DYFFR is packaged in a 16-bump DSBGA (YFF) with nominal body size 1.66 mm × 1.66 mm and 0.4-mm ball pitch. This ultra-compact, low-profile package supports fine-pitch routing and high-density placement in smartphones and tablets, and its thermal metrics (RθJA = 78°C/W, RθJB = 13°C/W) enable efficient heat dissipation through the PCB.
TPS61281DYFFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 4.85V
- Voltage - Output (Min/Fixed):
- 3.15V
- Voltage - Output (Max):
- 4.4V
- Current - Output:
- 3A (Switch)
- Frequency - Switching:
- 2.3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DSBGA (1.67x1.67)
TPS61281DYFFR FAQ
1.How can I place an order for TPS61281DYFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61281DYFFR 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 TPS61281DYFFR reliable?
The price and inventory of TPS61281DYFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61281DYFFR is usually 5 days.
3.What payment methods are accepted for TPS61281DYFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61281DYFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61281DYFFR?
TPS61281DYFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61281DYFFR 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 TPS61281DYFFR?
For technical support, including TPS61281DYFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61281DYFFR requirements.
6.How does Aetrix verify that TPS61281DYFFR is sourced from the original manufacturer or authorized distributors?
All TPS61281DYFFR 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 TPS61281DYFFR meets industry standards.
7.What is the process for return or replacement of TPS61281DYFFR?
All TPS61281DYFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61281DYFFR, 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 TPS61281DYFFR part is unused and in its original packaging.
Return procedure for TPS61281DYFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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