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Texas Instruments TPS61282DYFFT
- Part No.:
- TPS61282DYFFT
- Manufacturer:
- Texas Instruments
- Package:
- 16-UFBGA, DSBGA
- Datasheet:
-
TPS61282DYFFT.pdf
- Description:
- IC REG BOOST PROG 4A 16DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:206
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Product details
Overview
TPS61282DYFFT from Texas Instruments is a low-quiescent-current, wide-input-voltage DC/DC 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 current at 3.35 V with 2.3 MHz switching, integrated 35-mΩ pass-through path, and programmable valley current limit of 4 A. Its dual-mode operation (boost/bypass) extends battery runtime in high-pulse-power mobile systems.
For engineers reviewing the TPS61282DYFFT datasheet, TPS61282DYFFT pinout, TPS61282DYFFT application, or TPS61282DYFFT equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters (2.3 V–4.8 V input, 3.3 V/3.5 V selectable output thresholds), real-world application mappings, and two rigorously cross-checked alternative parts with documented functional differences.
Technical Context
The TPS61282DYFFT implements a synchronous boost architecture with automatic seamless transition between high-efficiency pass-through mode (35 mΩ RDS(on)) and 2.3 MHz fixed-frequency boost operation. It uses valley-current limiting with 4-A programmable threshold and supports true shutdown pass-through with only 3 µA quiescent current.
Its logic-control interface (no I²C) enables simple GPIO-based mode selection and fault signaling via open-drain PG output. The device integrates thermal shutdown (140–160°C), under-voltage lockout (2.1 V ±0.1 V), and pre-charge linear regulation to manage inrush during startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3 V to 4.8 V - supports full discharge of Ni-rich and Si-anode cells without premature system shutdown |
| Peak Output Current | ≥4 A at VOUT = 3.35 V, VIN ≥ 2.65 V - sustains burst loads in modem/baseband subsystems |
| Pass-Through RDS(on) | 35 mΩ typical - minimizes voltage drop and power loss when battery voltage exceeds system rail |
| Quiescent Current (Shutdown) | 3 µA - maximizes shelf life in always-on portable devices |
| Switching Frequency | 2.3 MHz - enables use of sub-500 nH inductors and compact 0402/0603 capacitors |
| Valley Inductor Current Limit | 4 A - protects internal MOSFETs during high-pulse transient events |
| Output Voltage Thresholds | 3.3 V (VSEL = L) / 3.5 V (VSEL = H) - configures boost activation point to match system minimum input requirements |
Pinout & Package
TPS61282DYFFT uses a 16-bump DSBGA (YFF) package measuring 1.66 mm × 1.66 mm with 0.4-mm pitch. Thermal performance is enhanced by exposed PGND bumps on the bottom side and dedicated AGND for analog reference stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (A3, A4) | Power input | Accepts 2.3–4.8 V battery source; dual pads reduce IR drop and improve thermal conduction |
| VOUT (B3, B4) | Regulated output | Delivers up to 4-A peak to system rails; dual pads support high-current routing |
| EN (A1) | Enable control | Active-high logic input; rising edge resets registers and initiates startup sequence |
| PG (A2) | Power-good indicator | Open-drain output signals valid regulation (high) or fault (low); replaces external supervisor IC |
| VSEL (B1) | Output threshold select | Binary input setting boost/bypass crossover at 3.3 V (L) or 3.5 V (H) |
| nBYP (C1) | Forced bypass control | Active-low input overrides auto-mode to engage 35-mΩ pass-through path unconditionally |
| MODE (B2) | Operating mode select | Configures PWM-only (H) or auto PFM/PWM (L); must be held low during startup |
| SW (C3, C4) | Switch node | Connects to inductor; dual pads handle high di/dt and reduce parasitic inductance |
| PGND (D2, D3, D4) | Power ground | High-current return path for MOSFETs and inductor; multiple bumps lower thermal resistance (RθJB = 13°C/W) |
| AGND (D1) | Analog ground | Reference for feedback, UVLO, and current-sense circuits; isolated from PGND to suppress noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pass-through FET | 35-mΩ RDS(on) enables >95% efficiency at full load without external MOSFET or control logic |
| True shutdown pass-through | 3-µA quiescent current with output connected directly to battery - eliminates need for external load switch in standby |
| Programmable 4-A valley current limit | Prevents inductor saturation and thermal runaway during 4G/LTE peak transmit bursts |
| 2.3-MHz fixed-frequency operation | Permits ultra-compact 0.47-µH inductor and <20 mm² total solution size - critical for thin smartphone PCBs |
| Thermal shutdown + UVLO protection | 140–160°C trip range and 2.1-V UVLO with 0.1-V hysteresis prevent damage during overtemperature or deep discharge |
Applications
| Smartphone Power Management | Tablet Baseband Subsystem |
|---|---|
Use Scenario: Powers LTE/5G modem and application processor core rails from single-cell Li-ion battery with Si-anode chemistry. IC Role / Device Role / Timing Role: Front-end pre-regulator that dynamically switches between pass-through and boost modes to maintain stable 3.35-V supply across 4.35-V to 2.5-V battery discharge curve. Use Value: Enables full utilization of battery capacity - extends talk time by 12–18% versus fixed-threshold solutions, per TI application testing. |
Use Scenario: Supplies high-pulse current to RF transceivers and camera ISP during video capture in 10-inch tablets. IC Role / Device Role / Timing Role: High-current DC/DC converter with 4-A peak capability and <500-µs startup time, synchronized to system power sequencing via EN and PG signals. Use Value: Prevents brownout-induced frame drops by sustaining 3.35-V rail during 2-A, 10-ms RF transmit bursts without external bulk capacitance. |
| 2.5G/3G/4G Mini-Module Data Card | Current-Limited High-Peak-Power Load |
Use Scenario: Powers embedded cellular modules in industrial M2M routers with strict thermal and footprint constraints. IC Role / Device Role / Timing Role: Compact, thermally robust front-end regulator using DSBGA package and low-RDS(on) pass-through path to minimize board area and heat generation. Use Value: Achieves <20 mm² solution size and 78°C/W junction-to-ambient thermal resistance - meets EN 55032 Class B EMI limits without shielding. |
Use Scenario: Drives pulsed laser diodes or flash LEDs in portable medical diagnostics equipment where input current must remain below 3-A limit. IC Role / Device Role / Timing Role: Programmable current-limited boost converter with 4-A valley limit and fast transient response (<10 µs recovery from 90% load step). Use Value: Limits peak input current to protect upstream battery protection ICs while delivering precise 3.35-V pulses up to 4-A peak for optical excitation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC front-end converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61281DYFFT | Same 16-pin DSBGA package and 3.15 V / 3.35 V VSEL thresholds, but 3-A valley current limit and logic interface identical to TPS61282DYFFT | Lower peak current capability suits mid-tier smartphones with less aggressive RF burst profiles | Select when system peak load stays below 3 A and cost optimization is prioritized over headroom |
| TPS61280DYFFT | I²C interface (up to 3.4 Mbps), 3-A valley current limit, and 3.15 V / 3.35 V VSEL thresholds - differs in communication protocol and current rating | Required where host MCU needs dynamic output voltage reconfiguration or telemetry readback (e.g., adaptive power management) | Choose only if I²C control and register access are mandatory; not pin-compatible due to SCL/SDA pin mapping |
Compared with TPS61281DYFFT, TPS61282DYFFT provides 33% higher valley current limit for demanding 4G/5G burst loads; compared with TPS61280DYFFT, it trades I²C configurability for simpler GPIO control and higher current delivery - making it optimal for cost-sensitive, high-pulse-power mobile designs without telemetry requirements.
Availability
TPS61282DYFFT is available at Aetrix Electronics and suitable for smartphone power management, tablet baseband subsystems, and 4G mini-module data cards requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.
Supply support for TPS61282DYFFT 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 single-cell Li-ion, Ni-rich, and silicon-anode battery front-end regulation in space-constrained mobile devices - emphasizing ultra-low IQ, high peak current, and seamless boost/bypass transition.
FAQ
What is the maximum peak output current supported by the TPS61282DYFFT?
The TPS61282DYFFT supports ≥4-A peak output current at VOUT = 3.35 V when input voltage is ≥2.65 V. This is enabled by its 4-A programmable valley inductor current limit and low-RDS(on) internal MOSFETs. The device maintains regulation during short-duration, high-current pulses typical in LTE/5G transmit events, as verified in TI's SLVSEA0B datasheet Section 8.5.
Does the TPS61282DYFFT support I²C communication?
No, the TPS61282DYFFT does not support I²C. It uses a simple logic-control interface with dedicated MODE, PG, EN, VSEL, and nBYP pins. The I²C interface is exclusive to the TPS61280D/E variants. Confusion may arise because the family shares the "TPS6128x" prefix, but pin functions and protocols are variant-specific - TPS61282DYFFT has MODE and PG pins, not SCL/SDA.
What are the VSEL threshold voltages for the TPS61282DYFFT?
The TPS61282DYFFT offers two programmable boost/bypass thresholds via the VSEL pin: 3.3 V when VSEL = LOW and 3.5 V when VSEL = HIGH. These values are fixed per variant and differ from TPS61280D/E (3.15 V/3.35 V) and TPS61281D (3.15 V/3.35 V). This allows precise alignment with system-level minimum input voltage requirements.
How does the TPS61282DYFFT behave during shutdown?
When EN is driven low, the TPS61282DYFFT enters shutdown with true pass-through mode active if nBYP is also low - connecting VIN directly to VOUT through the 35-mΩ internal FET while drawing only 3 µA quiescent current. If nBYP is high, the output is regulated to limit VIN–VOUT differential to <3.6 V. This behavior is explicitly defined in Table 9-2 of the SLVSEA0B datasheet.
What package type and dimensions does the TPS61282DYFFT use?
The TPS61282DYFFT uses a 16-bump DSBGA (YFF) package with nominal body size 1.66 mm × 1.66 mm and 0.4-mm bump pitch. It features an exposed thermal pad formed by three PGND bumps (D2, D3, D4) on the bottom side, achieving RθJB = 13°C/W. This package is identical across all TPS6128xD variants and is documented in Section 14.1 of the datasheet.
TPS61282DYFFT 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:
- 4A (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)
TPS61282DYFFT FAQ
1.How can I place an order for TPS61282DYFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61282DYFFT 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 TPS61282DYFFT reliable?
The price and inventory of TPS61282DYFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61282DYFFT is usually 5 days.
3.What payment methods are accepted for TPS61282DYFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61282DYFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61282DYFFT?
TPS61282DYFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61282DYFFT 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 TPS61282DYFFT?
For technical support, including TPS61282DYFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61282DYFFT requirements.
6.How does Aetrix verify that TPS61282DYFFT is sourced from the original manufacturer or authorized distributors?
All TPS61282DYFFT 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 TPS61282DYFFT meets industry standards.
7.What is the process for return or replacement of TPS61282DYFFT?
All TPS61282DYFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61282DYFFT, 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 TPS61282DYFFT part is unused and in its original packaging.
Return procedure for TPS61282DYFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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