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電池管理 IC
電池充電器 IC

BQ25898C

現行

適用於並聯充電應用的 I2C 單芯 3A 降壓電池充電器

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產品規格表

BQ25898C

現行
產品規格表 立即訂購

產品詳細資料

Number of series cells 1 Charge current (max) (A) 3 Vin (max) (V) 14 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.84 Battery charge voltage (max) (V) 4.6 Absolute max Vin (max) (V) 22 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1 Charge current (max) (A) 3 Vin (max) (V) 14 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.84 Battery charge voltage (max) (V) 4.6 Absolute max Vin (max) (V) 22 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 125
DSBGA (YFF) 42 6.72 mm² 2.8 x 2.4
  • Operation as Slave Charger to Provide Fast Charging in Dual Charger Operation
  • Simple Configuration with Minimum BOM
  • High Efficiency 3-A, 1.5-MHz Switch Mode Buck Charge
    • 92% Charge Efficiency at 3 A and 94% Charge Efficiency at 2 A Charge Current
    • Optimize for High Voltage Input (9 V / 12 V)
    • Low Power PFM mode for Light Load Operations
  • Single Input to Support USB Input and Adjustable High Voltage Adapters
    • Support 3.9-V to 14-V Input Voltage Range
    • Input Current Limit (100 mA to 3.25 A with 50-mA resolution) to Support USB2.0, USB3.0 standard and High Voltage Adapters
    • Wide Input Dynamic Power Management (DPM) Range
  • Highest Battery Discharge Efficiency with 5-mΩ Battery MOSFET
  • Default Charge Disabled
  • Integrated ADC for System Monitor
    (Input, System and Battery Voltage, Temperature, Charge Current)
  • Flexible Autonomous and I2C Mode for Optimal System Performance
  • Remote Battery Sensing
  • High Integration includes all MOSFETs, Current Sensing and Loop Compensation
  • High Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±5% Charge Current Regulation
    • ±7.5% Input Current Regulation
  • Safety
    • Thermal Regulation and Thermal Shutdown
    • Input UVLO/Overvoltage Protection
    • Battery OVP
    • Safety Timer
  • Operation as Slave Charger to Provide Fast Charging in Dual Charger Operation
  • Simple Configuration with Minimum BOM
  • High Efficiency 3-A, 1.5-MHz Switch Mode Buck Charge
    • 92% Charge Efficiency at 3 A and 94% Charge Efficiency at 2 A Charge Current
    • Optimize for High Voltage Input (9 V / 12 V)
    • Low Power PFM mode for Light Load Operations
  • Single Input to Support USB Input and Adjustable High Voltage Adapters
    • Support 3.9-V to 14-V Input Voltage Range
    • Input Current Limit (100 mA to 3.25 A with 50-mA resolution) to Support USB2.0, USB3.0 standard and High Voltage Adapters
    • Wide Input Dynamic Power Management (DPM) Range
  • Highest Battery Discharge Efficiency with 5-mΩ Battery MOSFET
  • Default Charge Disabled
  • Integrated ADC for System Monitor
    (Input, System and Battery Voltage, Temperature, Charge Current)
  • Flexible Autonomous and I2C Mode for Optimal System Performance
  • Remote Battery Sensing
  • High Integration includes all MOSFETs, Current Sensing and Loop Compensation
  • High Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±5% Charge Current Regulation
    • ±7.5% Input Current Regulation
  • Safety
    • Thermal Regulation and Thermal Shutdown
    • Input UVLO/Overvoltage Protection
    • Battery OVP
    • Safety Timer

The bq25898C is a highly-integrated switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The device supports high input voltage for charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution. The bq25898C is available in a 2.8mm x 2.5mm 42-ball DSBGA package.

The bq25898C is a highly-integrated 3-A switch-mode battery charge management device for single cell Li-Ion and Li-polymer battery. As a tiny and cost-effective device, it can also be configured as slave charger to provide fast charging in dual charger applications.

It features fast charging with high input voltage support for a wide range of smartphone, tablet and portable devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The solution is highly integrated with input reverse-blocking FET (RBFET,Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and integrated charge current sensing. It also integrates the bootstrap diode for the high-side gate drive and battery monitor for simplified system design. The I2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports a wide range of input sources, including standard USB host port, USB charging port, and USB compliant adjustable high voltage adapter. To set the default input current limit, the device takes the result from detection circuit in the system, such as USB PHY device. The device is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation.

The default charge current is set to 0 mA (both fast charge and precharge disabled). Once charge is enabled, the device may initiate and complete a charging cycle with software control.

The charger provides various safety features for battery charging and system operations, charging safety timer and overvoltage/overcurrent protections. The thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable). The STAT output reports the charging status and any fault conditions. The PG output indicates if a good power source is present. The INT immediately notifies host when fault occurs.

The device is available in a 2.80 mm x 2.50 mm 42-ball DSBGA package.

The bq25898C is a highly-integrated switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The device supports high input voltage for charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution. The bq25898C is available in a 2.8mm x 2.5mm 42-ball DSBGA package.

The bq25898C is a highly-integrated 3-A switch-mode battery charge management device for single cell Li-Ion and Li-polymer battery. As a tiny and cost-effective device, it can also be configured as slave charger to provide fast charging in dual charger applications.

It features fast charging with high input voltage support for a wide range of smartphone, tablet and portable devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The solution is highly integrated with input reverse-blocking FET (RBFET,Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and integrated charge current sensing. It also integrates the bootstrap diode for the high-side gate drive and battery monitor for simplified system design. The I2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports a wide range of input sources, including standard USB host port, USB charging port, and USB compliant adjustable high voltage adapter. To set the default input current limit, the device takes the result from detection circuit in the system, such as USB PHY device. The device is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation.

The default charge current is set to 0 mA (both fast charge and precharge disabled). Once charge is enabled, the device may initiate and complete a charging cycle with software control.

The charger provides various safety features for battery charging and system operations, charging safety timer and overvoltage/overcurrent protections. The thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable). The STAT output reports the charging status and any fault conditions. The PG output indicates if a good power source is present. The INT immediately notifies host when fault occurs.

The device is available in a 2.80 mm x 2.50 mm 42-ball DSBGA package.
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類型 標題 日期
* Data sheet bq25898C I2C Controlled Single Cell 3-A Charger for High Input Voltage in Compact DSBGA Package datasheet (Rev. B) PDF | HTML 2017年 3月 20日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

BQ25898CEVM-730 — BQ25898C 完整充電器評估模組

The bq25898C evaluation module (EVM) is a complete charger module for evaluating the highly-integrated switch-mode battery charge management and system power path management device in WCSP package for 1 cell Li-Ion and Li-polymer battery in a wide range of smartphone and tablet applications.

使用指南: PDF
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應用軟體及架構

BQSTUDIO — Battery Management Studio (bqStudio) 軟體

Battery Management Studio (bqStudio) 提供全套的強固工具，可協助評估、設計、配置、測試或使用 TI 電池管理產品的程序。其中包括可提供暫存器及資料記憶體完整存取的功能，包括支援即時觀看、繪圖和記錄、傳送命令的簡易介面、直接低階通訊和 I/O，以及用於配置、校準和執行學習週期的自動化和引導支援，進而產生實用的檔案，以利裝置投入生產。

在 bqStudio 中也支援舊產品，如 bq20xxx 和 bq30xxx。從適當的產品頁面下載特定的評估軟體。此外，您為 bqStudio 下載的最新化學更新程式需要 bqStudio 的更新版。
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模擬型號

bq2589x Calculation Tools (Rev. A)

SLURAX7A.ZIP (305 KB) - Power Model
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參考設計

PMP15011 — 適用於由單節鋰離子電池供電之終端設備的串級式雙充電器參考設計

Smartphones and other handheld equipment with 3AHr+ 1S Li-Ion batteries require 3-A+ charger current for fast charging.  Parallel chargers allow for high charge currents, resulting in shorter charge times, while distributing the heat losses across the end equipment PCB, thereby preventing (...)
Test report: PDF
電路圖: PDF
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