トップ

製品の詳細

パラメータ

Number of series cells 1 Charge current (Max) (A) 4 Operating 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 Vin (safety rating) (Max) ((V)) 22 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, USB D+/D-/BC1.2 integrated, USB OTG integrated Operating Vin (Min) (V) 3.9 Rating Catalog open-in-new その他の バッテリ・チャージャ IC

パッケージ|ピン|サイズ

DSBGA (YFF) 42 7 mm² 2.862 x 2.568 open-in-new その他の バッテリ・チャージャ IC

特長

  • High Efficiency 4-A, 1.5-MHz Switch Mode Buck Charge
    • 92% Charge Efficiency at 3 A and 91% Charge Efficiency at 4 A Charge Current
    • Optimize for High Voltage Input (9 V / 12 V)
    • Low Power PFM mode for Light Load Operations
  • USB On-the-Go (OTG) with Adjustable Output from 4.5 V to 5.5 V
    • Selectable 500-KHz / 1.5-MHz Boost Converter with up-to 2.4 A Output
    • 94% Boost Efficiency at 5 V at 1 A Output
    • Accurate Hiccup Mode Overcurent Protection
  • 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
    • Maximum Power Tracking by Input Voltage Limit up-to 14V for Wide Range of Adapters
    • Auto Detect USB SDP, CDP, DCP, and Non-Standard Adapters (bq25898)
    • Programmable D+/D- Drivers for Non-Standard Adapter Handshake
  • Remote Battery Sensing
  • Input Current Optimizer (ICO) to Maximize Input Power without Overloading Adapters
  • Resistance Compensation (IRCOMP) from Charger Output to Cell Terminal
  • Highest Battery Discharge Efficiency with 5-mΩ Battery Discharge MOSFET up to 9 A
  • Integrated ADC for System Monitor
    (Voltage, Temperature, Charge Current)
  • Narrow VDC (NVDC) Power Path Management
    • Instant-on Works with No Battery or Deeply Discharged Battery
    • Ideal Diode Operation in Battery Supplement Mode
  • BATFET Control to Support Ship Mode, Wake Up, and Full System Reset
  • Flexible Autonomous and I2C Mode for Optimal System Performance
  • High Integration includes all MOSFETs, Current Sensing and Loop Compensation
  • 12-µA Low Battery Leakage Current to Support Ship Mode
  • High Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±5% Charge Current Regulation
    • ±7.5% Input Current Regulation
  • Safety
    • Battery Temperature Sensing for Charge and Boost Mode
    • Thermal Regulation and Thermal Shutdown
  • Available in 2.8-mm x 2.5-mm 42-Ball DSBGA Package

All trademarks are the property of their respective owners.

open-in-new その他の バッテリ・チャージャ IC

概要

The bq25898, bq25898D are highly-integrated 4-A switch-mode battery charge management and system power path management devices for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast 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 bq25898/98D is a highly-integrated 4-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. 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. It also integrates Input Current Optimizer (ICO) and Resistance Compensation (IRCOMP) to deliver maximum charging power to battery. 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 battery FET (BATFET, Q4) between system and battery. 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 support fast charging using adjustable high voltage adapter, the bq25898D provides support for MaxCharge™ handshake using D+/D- pins and DSEL pin for USB switch control. In addition, both bq25898D and bq25898 include interface to support adjustable high voltage adapter using input current pulse protocol. To set the default input current limit, device uses the built-in USB interface (bq25898D) or takes the result from detection circuit in the system (bq25898), 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. In addition, the Input Current Optimizer (ICO) supports the detection of maximum power point detection of the input source without overload. The device also meets USB On-the-Go (OTG) operation power rating specification by supplying 5 V (Adjustable 4.5V-5.5V) on VBUS with current limit up to 2.4 A.

The power path management regulates the system slightly above battery voltage but does not drop below 3.5V minimum system voltage (programmable). With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current to zero. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This operation prevents overloading the input source.

The device initiates and completes a charging cycle without software control. It automatically detects the battery voltage and charges the battery in three phases: pre-conditioning, constant current and constant voltage. At the end of the charging cycle, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. When the full battery falls below the recharge threshold, the charger will automatically start another charging cycle.

The charger provides various safety features for battery charging and system operations, including battery temperature negative thermistor monitoring, 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 (bq25898) indicates if a good power source is present. The INT immediately notifies host when fault occurs.

The device also provides a 7-bit analog-to-digital converter (ADC) for monitoring charge current and input/battery/system (VBUS, BAT, SYS, TS) voltages. The QON pin provides BATFET enable/reset control to exit low power ship mode or full system reset function.

The devices are available in a 42-ball, 2.8 mm x 2.5 mm DSBGA package.

open-in-new その他の バッテリ・チャージャ IC
ダウンロード

技術資料

= TI が選択したこの製品の主要ドキュメント
結果が見つかりませんでした。検索条件をクリアして、もう一度検索を行ってください。 すべて表示 7
種類 タイトル 英語版のダウンロード 日付
* データシート bq25898, bq25898D I2C Controlled Single Cell 4-A Fast Charger with MaxCharge Technology for High Input Voltage and Adjustable Voltage USB On-the-Go Boost Mode データシート 2017年 3月 20日
技術記事 When to use rechargeable batteries in small battery applications 2019年 10月 1日
セレクション・ガイド 電源 IC セレクション・ガイド 2018 (Rev. R 翻訳版) 英語版をダウンロード (Rev.R) 2018年 9月 13日
技術記事 How to get the most benefits out of WCSPs for portable electronics 2017年 10月 24日
技術記事 How 1.2% more efficiency can help you charge faster and cooler 2017年 1月 17日
アプリケーション・ノート Achieving the Optimal Thermal Performance for Chip Scale Package 2017年 1月 10日
技術記事 A much smaller boost converter for slightly smaller power banks 2016年 5月 23日

設計と開発

追加の事項や他のリソースを参照するには、以下のタイトルをクリックすると、詳細ページを表示できます。

ハードウェア開発

評価ボード ダウンロード
document-generic ユーザー・ガイド
99
概要

The bq25898 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.

特長
  • Input voltage range of 3.9V to 14V and charge current up to 4 A
  • I2C communication with input current limit initially set by D+/D- detection
  • LED indication for status signals
  • Test points for key signals available for testing purposes
  • Jumpers for different circuit configuration

ソフトウェア開発

アプリケーション・ソフトウェアとフレームワーク ダウンロード
バッテリ・マネージメント・スタジオ(bqStudio)ソフトウェアスイート
BQSTUDIO Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
特長
  • Real-time Gauge Dashboard for monitoring basic registers
  • Full register access and logging
  • Full data memory access and logging
  • Product configuration and monitoring tools
  • Import and export of product configurations
  • Calibration and test automation
  • Export of FS files for the target production environment 

設計ツールとシミュレーション

シミュレーション・モデル ダウンロード
SLURAX7A.ZIP (305 KB) - Power Model

リファレンス・デザイン

リファレンス・デザイン ダウンロード
ウェアラブル・アプリケーション向け小型 I2C 制御シングルセル・チャージャのリファレンス・デザイン
TIDA-03042 — The TIDA-03042 TI Design is a single-cell charger reference design for wearable applications which have a very limited design space. TIDA-03042 works with a host controller through I2C control, supports 5-V, 9-V, or 12-V input adaptors and can charge up to 1.5 A. The actual charger design only (...)
document-generic 回路 document-generic ユーザー・ガイド

CAD/CAE シンボル

パッケージ ピン数 ダウンロード
DSBGA (YFF) 42 オプションの表示

購入と品質

含まれる情報:
  • 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 rating/ リフローピーク温度
  • MTBF/FIT の推定値
  • 原材料組成
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果

おすすめの製品には、この TI 製品に関連するパラメータ、評価モジュール、またはリファレンス・デザインが含まれている場合があります。

サポートとトレーニング

TI E2E™ Forums (英語) では、TI のエンジニアからの技術サポートが活用できます

コンテンツは、TI 投稿者やコミュニティ投稿者によって「現状のまま」提供されるもので、TI による仕様の追加を意図するものではありません。使用条件をご確認ください

TI 製品の品質、パッケージ、ご注文に関する質問は、TI サポートのページをご覧ください。

トレーニング・シリーズ

TI のトレーニングとビデオをすべて表示

ビデオ