製品詳細

Number of series cells 1 Charge current (max) (A) 1.25 Vin (max) (V) 6 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), USB OTG integrated Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1 Charge current (max) (A) 1.25 Vin (max) (V) 6 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), USB OTG integrated Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -40 to 125
DSBGA (YFF) 20 3.96 mm² 1.8 x 2.2
  • Integrated Power FETs for up to 1.55-A Charge
    Rate
  • Spread Spectrum Frequency Control for Improved
    EMI Performance
  • High-Accuracy Voltage and Current Regulation
    • Input Current Regulation Accuracy:
      ±5% (100 mA and 500 mA)
    • Charge Voltage Regulation Accuracy:
      ±0.5% (25°C), ±1% (0°C to 125°C)
    • Charge Current Regulation Accuracy: ±5%
  • Factory Test-Mode for GSM Calibration Without a
    Battery
  • Input Voltage Based Dynamic Power
    Management (VIN DPM)
  • Bad Adaptor Detection and Rejection
  • Safety Limit Register for Maximum Charge
    Voltage and Current Limiting
  • High-Efficiency Mini-USB/AC Battery Charger for
    Single-Cell Li-Ion and Li-Polymer Battery Packs
  • 20-V Absolute Maximum Input Voltage Rating
  • 6.5-V Maximum Operating Input Voltage
  • Programmable Charge Parameters through I2C
    Compatible Interface (up to 3.4 Mbps):
    • Input Current Limit
    • VIN DPM Threshold
    • Fast-Charge/Termination Current
    • Charge Regulation Voltage (3.5 to 4.44 V)
    • Low Charge Current Mode Enable/Disable
    • Termination Enable/Disable
  • Synchronous Fixed-Frequency PWM Controller
    Operating at 3 MHz With 0% to 99.5% Duty Cycle
  • Automatic High Impedance Mode for Low Power
    Consumption
  • Robust Protection
    • Reverse Leakage Protection Prevents Battery
      Drainage
    • Thermal Regulation and Protection
    • Input/Output Overvoltage Protection
  • Status Output for Charging and Faults
  • USB Friendly Boot-Up Sequence
  • Automatic Charging
  • Power Up System Without Battery
  • Boost Mode Operation for USB OTG:
    • Input Voltage Range (from Battery):
      3.2 to 4.5 V
    • Output for VBUS: 5.05 V, 350 mA
  • 2.1 × 2.0-mm, 20-Pin DSBGA Package
  • Pin-to-Pin Compatible With bq24157 and bq24158
  • Integrated Power FETs for up to 1.55-A Charge
    Rate
  • Spread Spectrum Frequency Control for Improved
    EMI Performance
  • High-Accuracy Voltage and Current Regulation
    • Input Current Regulation Accuracy:
      ±5% (100 mA and 500 mA)
    • Charge Voltage Regulation Accuracy:
      ±0.5% (25°C), ±1% (0°C to 125°C)
    • Charge Current Regulation Accuracy: ±5%
  • Factory Test-Mode for GSM Calibration Without a
    Battery
  • Input Voltage Based Dynamic Power
    Management (VIN DPM)
  • Bad Adaptor Detection and Rejection
  • Safety Limit Register for Maximum Charge
    Voltage and Current Limiting
  • High-Efficiency Mini-USB/AC Battery Charger for
    Single-Cell Li-Ion and Li-Polymer Battery Packs
  • 20-V Absolute Maximum Input Voltage Rating
  • 6.5-V Maximum Operating Input Voltage
  • Programmable Charge Parameters through I2C
    Compatible Interface (up to 3.4 Mbps):
    • Input Current Limit
    • VIN DPM Threshold
    • Fast-Charge/Termination Current
    • Charge Regulation Voltage (3.5 to 4.44 V)
    • Low Charge Current Mode Enable/Disable
    • Termination Enable/Disable
  • Synchronous Fixed-Frequency PWM Controller
    Operating at 3 MHz With 0% to 99.5% Duty Cycle
  • Automatic High Impedance Mode for Low Power
    Consumption
  • Robust Protection
    • Reverse Leakage Protection Prevents Battery
      Drainage
    • Thermal Regulation and Protection
    • Input/Output Overvoltage Protection
  • Status Output for Charging and Faults
  • USB Friendly Boot-Up Sequence
  • Automatic Charging
  • Power Up System Without Battery
  • Boost Mode Operation for USB OTG:
    • Input Voltage Range (from Battery):
      3.2 to 4.5 V
    • Output for VBUS: 5.05 V, 350 mA
  • 2.1 × 2.0-mm, 20-Pin DSBGA Package
  • Pin-to-Pin Compatible With bq24157 and bq24158

The bq24157S is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The IC integrates a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small DSBGA package.

The IC charges the battery in three phases: conditioning, constant current, and constant voltage. The input current is automatically limited to the value set by the host.

Charge is terminated based on battery voltage and user-selectable minimum current level. During normal operation, the IC automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status can be reported to the host using the I2C interface. During the charging process, the IC monitors its junction temperature (TJ) and reduces the charge current after TJ increases to about 125°C. To support a USB OTG device, bq24157S can provide VBUS (5.05 V) by boosting the battery voltage. The IC is available in 20-pin DSBGA package.

The bq24157S is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The IC integrates a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small DSBGA package.

The IC charges the battery in three phases: conditioning, constant current, and constant voltage. The input current is automatically limited to the value set by the host.

Charge is terminated based on battery voltage and user-selectable minimum current level. During normal operation, the IC automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status can be reported to the host using the I2C interface. During the charging process, the IC monitors its junction temperature (TJ) and reduces the charge current after TJ increases to about 125°C. To support a USB OTG device, bq24157S can provide VBUS (5.05 V) by boosting the battery voltage. The IC is available in 20-pin DSBGA package.

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種類 タイトル 最新の英語版をダウンロード 日付
* データシート bq24157S 1.55-A Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support データシート (Rev. B) PDF | HTML 2015年 5月 5日
アプリケーション・ノート Building your own Battery Simulator 2013年 10月 14日

設計および開発

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評価ボード

BQ24157EVM-697 — BQ24157EVM-697 評価基板

The BQ24157EVM-697 evaluation module is a complete charger module for evaluating compact, flexible, high-efficiency, USB-friendly, switch-mode charge management solution for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The bq24157 integrates a (...)
ユーザー ガイド: PDF
ドライバまたはライブラリ

BQ2415XSW-LINUX — Linux ドライバ、BQ2415X 用

この Linux ドライバは、フル統合型、スイッチ・モード、1 セル・リチウムイオン・チャージャである BQ2415x シリーズをサポートしています。また、この Linux ドライバは I2C バス経由の通信をサポートしており、電源サブシステムとのインターフェイスとして機能します。

Linux のメインライン・ステータス

Linux メインラインで利用可能か:はい
git.ti.com から入手可能か:N/A 

Linux ソース・ファイル

このデバイスに関連付けられているファイル:

  1. drivers/power/supply/bq2415x_charger.c

  2. (...)

パッケージ ピン数 CAD シンボル、フットプリント、および 3D モデル
DSBGA (YFF) 20 Ultra Librarian

購入と品質

記載されている情報:
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報:
  • ファブの拠点
  • 組み立てを実施した拠点

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