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Texas Instruments BQ25882YFFT
- Part No.:
- BQ25882YFFT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 25-UFBGA, DSBGA
- Datasheet:
-
BQ25882YFFT.pdf
- Description:
- IC BATT PWR MGMT MULT 2C 25DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,187
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Product details
Overview
BQ25882YFFT from Texas Instruments is an I²C-controlled, 2-cell Li-ion/Li-polymer switch-mode battery charger and power path manager with integrated 2-A boost charging, 2-A USB OTG buck output, and 16-bit ADC. It supports 3.9–6.2 V USB input, delivers ±0.4% charge voltage accuracy and 92.5% efficiency at 7.6 V/1 A, and enables instant-on operation via NVDC architecture in portable electronics.
For engineers reviewing the BQ25882YFFT datasheet, BQ25882YFFT pinout, BQ25882YFFT application, or BQ25882YFFT equivalent, this page provides verified technical context, validated pin functions, confirmed system-level timing roles (e.g., I²C-controlled charge regulation, OTG buck enablement), and real-world substitution guidance for dual-cell battery-powered devices requiring USB-C compatible power management.
Technical Context
The BQ25882YFFT implements a synchronous boost converter for 2-cell battery charging (up to 9.2 V) and a synchronous buck converter for USB On-The-Go (OTG) output (4.5–5.5 V). Its dual-path architecture uses separate high-side (Q2, 40 mΩ typ.) and low-side (Q3, 59 mΩ typ.) MOSFETs for boost switching, plus a dedicated blocking MOSFET (Q1, 36 mΩ typ.) between VBUS and PMID.
Power path control integrates Narrow VDC (NVDC) with ideal diode operation during battery supplement mode and automatic USB port detection (SDP/CDP/DCP) via D+/D− lines. The device operates in either autonomous mode or full I²C-configurable mode, supporting register-based charge profile tuning, input current optimization (ICO), and JEITA-compliant thermistor monitoring across four temperature zones.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Output | 2-A switch-mode boost for 2-cell Li-ion (6.8–9.2 V range); enables fast charging of 7.4 V nominal batteries without external FETs. |
| OTG Buck Output | 2-A regulated buck output (4.5–5.5 V); powers USB peripherals directly from battery with 94.5% efficiency at 5 V/1 A. |
| Input Voltage Range | 3.9–6.2 V with 20-V absolute max; supports USB 2.0/3.0 adapters and legacy wall chargers while preventing overvoltage damage. |
| Charge Voltage Accuracy | ±0.4% at 8.4 V; ensures precise cell balancing and longevity for dual-cell packs under varying thermal conditions. |
| Integrated ADC | 16-bit resolution with programmable sampling (3–24 ms); monitors VBUS, BAT, SYS, TS, die temp, and charge/discharge currents for closed-loop system control. |
| Thermal Protection | Junction regulation at 120°C and shutdown at 150°C; prevents thermal runaway during sustained high-current operation. |
| Package | 25-ball DSBGA, 2.10 × 2.10 mm²; ultra-compact footprint optimized for space-constrained portable designs like wireless speakers and ePOS terminals. |
Pinout & Package
Package: 25-pin DSBGA (YFF), 2.10 × 2.10 mm², 0.4-mm pitch, bottom-side solder balls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BAT | Battery power connection | Main battery terminal; connects internal BATFET between SYS and BAT; requires 10 µF ceramic capacitor to GND for stability. |
| BATP / BATN | Kelvin battery sense | Differential sensing inputs for accurate charge/discharge current measurement; must be routed directly to battery terminals to minimize trace resistance error. |
| VBUS | USB input supply | Primary input for USB adapters; supports auto-detection of SDP/CDP/DCP via D+/D−; bypassed with ≥1 µF ceramic capacitor. |
| SYS | System power rail | Regulated output powering host system; maintains voltage above VSYS_MIN even with deeply discharged battery via NVDC path. |
| SW | Boost converter switch node | Connection to external inductor; switches at 1.5 MHz (typ.); requires tight layout to minimize EMI and switching losses. |
| PMID | Blocking MOSFET drain | Intermediate node between VBUS and internal Q1; decoupled with 10 µF ceramic capacitor to reduce ripple on input path. |
| SCL / SDA | I²C interface | Standard 100-kHz I²C bus (1.8-V logic); enables full configuration of charge profiles, OTG settings, fault responses, and ADC parameters. |
| TS | Thermistor input | Analog input for NTC thermistor; used for JEITA-compliant charge suspension at cold/hot thresholds (e.g., <0°C or >60°C). |
| INT / PG | Status signaling | Open-drain interrupt (/INT) and power-good (/PG) outputs; provide 256-µs pulses for host MCU event-driven status reporting. |
Key Features
| Feature | Design Value |
|---|---|
| Narrow VDC (NVDC) power path | Enables instant-on functionality with no battery or deeply discharged battery by maintaining SYS voltage independently of BAT state. |
| Input Current Optimizer (ICO) | Maximizes power extraction from weak USB sources (e.g., PCs) by dynamically adjusting input current limit without triggering adapter collapse. |
| Integrated 15-mΩ discharge MOSFET (Q4) | Minimizes conduction loss during battery-to-system discharge, enabling >95% system efficiency at light loads. |
| Programmable PFM mode with out-of-audio option | Reduces light-load switching noise below 20 kHz while maintaining >85% efficiency at 10 mA system load. |
| Auto USB port detection (BC1.2) | Identifies SDP, CDP, DCP, and non-standard adapters using D+/D− line analysis-no external components required. |
Applications
| Wireless Speaker | Digital Camera (DSC/DVC) |
|---|---|
|
Use Scenario: Portable Bluetooth speaker with dual-cell Li-ion pack, USB-C input for charging and OTG audio playback. IC Role / Device Role: Dual-role power manager: charges battery from USB while simultaneously powering codec and amplifier via SYS rail; enables OTG mode to draw power from battery to drive USB DAC. Use Value: Eliminates need for separate charger + LDO + USB switch; 92.5% boost efficiency extends playtime; NVDC ensures uninterrupted audio during low-battery transitions. |
Use Scenario: Compact digital camera with USB-rechargeable 7.4-V battery and USB host capability for memory card readers. IC Role / Device Role: Battery charge controller and OTG buck regulator; manages charge termination, thermal cutoff, and 5-V OTG output for peripheral enumeration. Use Value: ±0.4% VREG accuracy prevents overcharging; 16-bit ADC enables real-time battery health monitoring; 2-A OTG output powers high-speed card readers without brownout. |
| Mobile Printer | Tablet |
|
Use Scenario: Battery-powered thermal printer with USB-C input for charging and host printing via OTG. IC Role / Device Role: System power arbiter: prioritizes SYS rail for print head driver during active printing while regulating charge current to avoid thermal throttling. Use Value: Input current optimizer (ICO) prevents USB port reset when printer draws peak current; 15-mΩ BATFET reduces discharge loss during high-current thermal head activation. |
Use Scenario: 10-inch tablet with dual-cell battery, USB-C PD fallback, and always-on system monitoring. IC Role / Device Role: Primary power path manager: handles USB input, battery charging, SYS regulation, and die temperature monitoring via integrated ADC. Use Value: 2.1 × 2.1 mm DSBGA saves PCB area; 125°C junction regulation allows safe operation under sustained CPU/GPU load; I²C registers enable dynamic charge rate adjustment based on usage patterns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-cell battery charge management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ25883YFFT | Same 25-ball DSBGA package and pinout; identical boost/OTG specs but lacks power path (no NVDC) and cell balancing. | Not suitable for instant-on or battery-supplement use cases; limited to systems where SYS rail can tolerate battery undervoltage. | Select BQ25883YFFT only if NVDC and ideal diode operation are unnecessary and cost reduction is prioritized. |
| BQ25887YFFT | Same package and I²C interface; includes OTG but omits power path and has no integrated ADC or thermistor support. | Requires external temperature sensing and system-level power arbitration logic; unsuitable for JEITA-compliant charging. | Choose BQ25887YFFT only when OTG functionality is needed without battery temperature qualification or autonomous power path control. |
Compared with BQ25882YFFT, BQ25883YFFT removes NVDC and power path control-reducing system-level reliability in low-battery scenarios-while BQ25887YFFT eliminates ADC and thermistor comparators, shifting thermal safety responsibility to the host MCU and increasing BOM count.
Availability
BQ25882YFFT is available at Aetrix Electronics and suitable for wireless speakers, digital cameras, and mobile printers requiring stable component supply, long-term lifecycle support, and guaranteed traceability for industrial and consumer OEM programs.
Supply support for BQ25882YFFT 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 and embedded processing technologies, with decades of expertise in battery management ICs for portable and industrial applications.
The BQ25882YFFT belongs to TI's BQ25xxx family of highly integrated battery charge managers, designed specifically for USB-powered dual-cell Li-ion devices needing compact, efficient, and thermally robust power path solutions.
FAQ
What is the maximum supported battery voltage for the BQ25882YFFT?
The BQ25882YFFT supports a charge voltage regulation range of 6.8 V to 9.2 V, making it suitable for 2-cell Li-ion or Li-polymer batteries with nominal 7.4 V and fully charged voltage up to 8.4–8.8 V. Its ±0.4% charge voltage accuracy ensures reliable termination at precisely configured VREG values, such as 8.40 V or 8.80 V, across –40°C to +85°C ambient.
Does the BQ25882YFFT support USB On-The-Go (OTG) functionality?
Yes, the BQ25882YFFT supports USB OTG via its integrated synchronous buck converter, delivering adjustable 4.5–5.5 V output at up to 2 A. It features accurate constant-current limiting, short-circuit protection, and selectable PFM mode. The OTG function is enabled only when VBAT exceeds 5.85 V and is controlled via I²C register writes-no external circuitry is required for basic OTG operation.
How does the BQ25882YFFT handle thermal regulation during charging?
The BQ25882YFFT implements dual-stage thermal protection: junction temperature regulation activates at 120°C (±0°C accuracy) to throttle charge current, and thermal shutdown triggers at 150°C. It also supports JEITA-compliant thermistor monitoring via the TS pin, allowing configurable charge suspension at cold (<0°C) and hot (>60°C) thresholds using a standard 103AT-2 NTC thermistor and resistor divider.
What communication interface does the BQ25882YFFT use for configuration?
The BQ25882YFFT uses a standard I²C interface (SCL/SDA pins) operating at up to 100 kHz for full register-based configuration. All critical parameters-including charge voltage/current, OTG output voltage/current, input current limits, JEITA thresholds, ADC sampling rate, and fault response modes-are programmable via I²C. The device also supports autonomous operation when I²C is disabled.
Is the BQ25882YFFT compatible with USB Battery Charging Specification v1.2?
Yes, the BQ25882YFFT implements full BC1.2-compliant USB port detection using D+/D− line analysis to identify SDP, CDP, and DCP sources. It performs data contact detection (DCD) and secondary detection, enabling optimal input current limit selection (e.g., 500 mA for SDP, 1.5 A for CDP) without host intervention-critical for compliance in certified USB accessories.
BQ25882YFFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 25-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Power Management
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 2
- Fault Protection:
- Over Current, Over Temperature, Short Circuit
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 25-DSBGA
BQ25882YFFT FAQ
1.How can I place an order for BQ25882YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ25882YFFT 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 BQ25882YFFT reliable?
The price and inventory of BQ25882YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ25882YFFT is usually 5 days.
3.What payment methods are accepted for BQ25882YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ25882YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ25882YFFT?
BQ25882YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ25882YFFT 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 BQ25882YFFT?
For technical support, including BQ25882YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ25882YFFT requirements.
6.How does Aetrix verify that BQ25882YFFT is sourced from the original manufacturer or authorized distributors?
All BQ25882YFFT 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 BQ25882YFFT meets industry standards.
7.What is the process for return or replacement of BQ25882YFFT?
All BQ25882YFFT units undergo pre-shipment inspection (PSI). If there is an issue with BQ25882YFFT, 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 BQ25882YFFT part is unused and in its original packaging.
Return procedure for BQ25882YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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