±20mA 終端と 1A 電流増幅機能搭載、WCSP 封止、I2C 制御、1.5A シングルセル降圧バッテリ・チャージャ




Number of series cells 1 Charge current (Max) (A) 1.5 Operating Vin (Max) (V) 13.5 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (Min) (V) 3.5 Battery charge voltage (Max) (V) 4.52 Absolute Vin (safety rating) (Max) ((V)) 22 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) 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


DSBGA (YFF) 30 6 mm² 2.002 x 2.402 open-in-new その他の バッテリ・チャージャ IC


  • Single chip solution to charge wearable accessories from adapter or battery
  • High-efficiency, 1.5-MHz, synchronous switch-mode buck charger
    • 95.5% Charge efficiency at 0.5 A and 94.5% efficiency at 1 A
    • ±0.5% Charge voltage regulation (10-mV step)
    • I2C Programmable JEITA profile of charge voltage, current and temperature thresholds
    • Low termination current with high accuracy 20 mA±10 mA
    • Small inductor form factor of 2.5x2.0x1.0 mm3
  • Boost mode with output from 4.6 V to 5.15 V
    • 94% Boost efficiency at 1-A output
    • Integrated control to switch between charge and boost mode
    • PMID_GOOD Pin control external PMOS FET for protection against fault conditions
  • Single input to support USB input and high-voltage adapter and wireless power
    • Support 4-V to 13.5-V input voltage range with 22-V absolute max input rating
    • Programmable input current limit (IINDPM) with I2C (100-mA to 3.2-A, 100-mA/step)
    • Maximum power tracking by input voltage limit (VINDPM) up to 5.4 V
    • VINDPM Threshold automatically tracks battery voltage
  • Narrow VDC (NVDC) power path management
    • System instant-on with no battery or deeply discharged battery
  • Flexible I2C configuration and autonomous charging for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
  • Low Rdson 19.5-mΩ BATFET to minimize charging loss and extend battery run time
    • BATFET Control for ship mode, and full system reset with and without adapter
  • 7-µA Low battery leakage current in ship mode
  • 9.5-µA Low battery leakage current with system standby
  • High accuracy battery charging profile
    • ±6% Charge current regulation
    • ±7.5% Input current regulation
    • Remote battery sensing to charge faster
    • Programmable top-off timer for full battery charging

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


The BQ25618/619 integrates charge, boost converter and voltage protection in a single device. It offers the industry’s lowest termination current for switching chargers to charge wearable devices by full battery capacity. The BQ25618/619 best-in-class low quiescent current reduces battery leakage down to 6 uA in ship mode, which conserves battery energy to double the shelf life for the device. BQ25619 is in 4x4 QFN package for easy layout. BQ25618 is in 2.0x2.4mm2 WCSP package for space limited design.

The BQ25619/618 is a highly integrated 1.5-A switch-mode battery charge management and system Power Path management device for Li-Ion and Li-polymer battery. It features fast charging with high input voltage support for a wide range of applications including wearables, and earphone charging case. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery run time during discharging phase. Its input voltage and current regulation, low termination current, and battery remote sensing deliver maximum charging power to the 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 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, USB compliant high voltage adapter and wireless power. It is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation. The device takes the result from detection circuit in the system, such as USB PHY device.

The device integrates the buck charger and boost regulator into one solution with single inductor. The boost mode supplies 5V (adjustable 4.6 V/4.75 V/5 V/5.15 V) on PMID pin. The boost mode is used to save BOM and charge another battery by the control of PMID_GOOD.The PMID_GOOD pin is used to drive the external PMOS FET to disconnect boost output PMID from the attached accessories.

The Power Path management regulates the system slightly above battery voltage but does not drop below 3.5-V minimum system voltage (programmable) with adapter applied. 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. As the system load continues to increase, the battery starts to discharge the battery until the system power requirement is met. This supplement mode prevents overloading the input source.

The device initiates and completes a charging cycle without software control. It senses 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 and the battery voltage is higher than the recharge threshold. If the fully charged battery falls below the recharge threshold, the charger automatically starts another charging cycle.

The charger provides various safety features for battery charging and system operations, including battery negative temperature coefficient thermistor monitoring, charging safety timer and overvoltage and over-current protections. Thermal regulation reduces charge current when the junction temperature exceeds 110°C. The status register reports the charging status and any fault conditions. With I2C, the VBUS_GD bit indicates if a good power source is present, and the INT output immediately notifies host when a fault occurs.

The device also provides the QON pin for BATFET enable and reset control to exit low power ship mode or full system reset function.

The BQ2619 device is available in 24-pin, 4 mm × 4 mm x 0.75 mm thin WQFN package and BQ25618 is available in 30-ball, 2.0 mm × 2.4 mm WCSP package.

open-in-new その他の バッテリ・チャージャ IC
open-in-new 製品の比較
新製品 BQ25618E アクティブ I2C controlled 1.5-A single cell buck battery charger with 20-mA termination OTG ブースト機能なしのピン互換
BQ25619 アクティブ ±20mA 終端、1A 電流増幅機能搭載、I2C 制御、1.5A シングルセル降圧バッテリ・チャージャ 本製品は、WQFN パッケージです。


star = TI が選択したこの製品の主要ドキュメント
すべて表示 6
種類 タイトル 英語版のダウンロード 日付
* データシート BQ25618/619 I2C Controlled 1-Cell 1.5-A Battery Charger with 20-mA Termination and 1-A Boost Operation データシート (Rev. B) 2019年 9月 11日
アプリケーション・ノート 2-Pin Communication for TWS Applications 2020年 6月 18日
技術記事 When to use rechargeable batteries in small battery applications 2019年 10月 1日
ユーザー・ガイド BQ25618 BMS024 Evaluation Module 2019年 9月 5日
技術記事 Should I use a linear charger or a switching charger? 2015年 10月 31日
技術記事 Summertime and the livin' is easy 2014年 6月 20日




評価ボード ダウンロード
document-generic ユーザー・ガイド
The BQ25618EVM is an evaulation module (EVM) used to test the BQ25618 device, a 1.5-A single-cell battery charger optimized for power bank applications in low power portable designs. The OTG reverse synchronous boost operation and forward buck mode operation allows for control over power (...)
  • 94% charge efficiency at 1 A from 5-V input and 92% boost efficiency at 1-A output
  • Output short circuit protection and soft-start up To 500-µF capacitive load in OTG mode
  • 10-µA low battery leakage current with system voltage standby 3-µA low battery leakage current in ship mode
  • BATFET control to support (...)


ドライバまたはライブラリ ダウンロード
Linux driver for BQ256XX
BQ256XXSW-LINUX — この Linux ドライバは、I2C 制御で、1 セルのスイッチ・モード・バッテリ充電管理とシステムのパワー・パス管理を実施する IC である BQ256XX ファミリ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:いいえ

Linux ソース・ファイル


  1. drivers/power/supply/bq256xx_charger.c




"make menuconfig" を使用してカーネルを構成します (代わりに、"make xconfig" または "make nconfig" を使用できます)

Menuconfig の位置

Symbol: CHARGER_BQ256XX [=y]

Type  : tristate

Prompt:TI BQ256XX battery charger driver



CAD/CAE シンボル

パッケージ ピン数 ダウンロード
DSBGA (YFF) 30 オプションの表示


  • RoHS
  • 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

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