評価基板 (EVM) 向けの GUI
データシート
BQ24195L
- High Efficiency Switch Mode Charger
- 2.5-A (bq24195L) or 4.5-A (bq24195) Fast Charging
- 92% Charge Efficiency at 2 A, 90% at 4 A
- Synchronous Boost Converter in Battery Boost Mode
- 5.1 V at 1 A (bq24195L) or 5.1 V at 2.1 A (bq24195)
- 94% 5.1-V Boost Efficiency at 1 A, 91% at 2.1 A
- Highest Battery Discharge Efficiency with 12-mΩ
Battery Discharge MOSFET up to 9-A Discharge Current - Single Input USB-compliant/Adapter Charger
- USB Host or Charging Port D+/D- Detection Compatible
to USB Battery Charger Spec 1.2 - Input Voltage and Current Limit Supports USB2.0 and USB3.0
- Input Current Limit: 100 mA, 150 mA, 500 mA, 900 mA, 1.2 A,
1.5 A, 2 A and 3 A
- USB Host or Charging Port D+/D- Detection Compatible
- 3.9-V to 17-V Input Operating Voltage Range
- Support All Kinds of Adapter with Input Voltage DPM
Regulation
- Support All Kinds of Adapter with Input Voltage DPM
- Narrow VDC (NVDC) Power Path Management
- Instant-on Works with No Battery or Deeply Discharged
Battery - Ideal Diode Operation in Battery Supplement Mode
- Instant-on Works with No Battery or Deeply Discharged
- 1.5-MHz Switching Frequency for Low Profile Inductor
- Autonomous Battery Charging with or without Host
Management- Battery Charge Enable
- Battery Charge Preconditioning
- Charge Termination and Recharge
- High Accuracy (0°C to 125°C)
- ±0.5% Charge Voltage Regulation
- ±7% Charge Current Regulation
- ±7.5% Input Current Regulation
- ±2% Output Regulation in Boost Mode
- High Integration
- Power Path Management
- Synchronous Switching MOSFETs
- Integrated Current Sensing
- Bootstrap Diode
- Internal Loop Compensation
- Safety
- Battery Temperature Sensing and Charging Safety Timer
- Thermal Regulation and Thermal Shutdown
- Input System Over-Voltage Protection
- MOSFET Over-Current Protection
- Charge Status Outputs for LED or Host Processor
- Low Battery Leakage Current and Support Shipping Mode
- 4.00 mm × 4.00 mm QFN-24 Package
The bq24195L, bq24195 are highly-integrated switch-mode battery charge management and system power path management devices for single cell Li-Ion and Li-polymer battery in a wide range of power bank, tablet and other portable devices.
Its 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 device supports a wide range of input sources, including standard USB host port, USB charging port and high power DC adapter. To set the default input current limit, the bq24195L, bq24195 detects the input source following the USB battery charging spec 1.2. The bq24195/bq24195L are compliant with USB 2.0 and USB 3.0 power specifications with input current and voltage regulation. The bq24195L, bq24195 supports battery boost operation by supplying 5.1 V on PMID pin with minimum current of 1.0 A (bq24195L) or 2.1 A (bq24195).
The power path management regulates the system slightly above battery voltage but does not drop below 3.5-V 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 supplement mode operation prevents overloading the input source.
The devices initiate and complete 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 devices provide various safety features for battery charging and system operation, including negative thermistor monitoring, charging safety timer and over-voltage/over-current 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 INT immediately notifies the host when a fault occurs.
The bq24195 and bq24195L are available in a 24-pin, 4.00 × 4.00 mm2 thin VQFN package.
技術資料
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8 をすべて表示 | 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 | bq24195 I2C Controlled 2.5-A /4.5-A Single Cell USB/Adapter Charger with 5.1 V at 1 A /5.1 V at 2.1 A Synchronous Boost Operation データシート (Rev. A) | PDF | HTML | 2014年 12月 30日 | ||
| アプリケーション・ノート | Selection of Single-Cell Buck Narrow VDC Switching Battery Chargers | PDF | HTML | 2022年 11月 10日 | |||
| アプリケーション・ノート | USB D+/D- Input Current Limit Detection | PDF | HTML | 2020年 12月 30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 (Rev.R) | 2018年 9月 13日 | |||
| 設計ガイド | bq24190 Calculation Tool | 2015年 8月 19日 | ||||
| ユーザー・ガイド | I2C Controlled 2.5A Single Cell USB, Adaptor Charger (Rev. A) | 2014年 2月 11日 | ||||
| 製品概要 | Power Bank Charger ICs | 2013年 2月 25日 | ||||
| 製品概要 | Faster Charging Power Bank Turn-Key Solutions | 2013年 2月 20日 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
評価ボード
BQ2419XEVM — BQ2419X 評価基板
The bq2419x evaluation module (EVM) is a complete charger module for evaluating an I2C-controlled single NVDC-1 charge using the bq2419x devices.
The BQ2419xEVM-021 requires USB Interface Adaptive Evaluation Module “USB-TO-GPIO” for I2C interface. If one is not already available to you (...)
ユーザー ガイド: PDF
リファレンス・デザイン
TIDA-00036 — I2C 制御シングル・セル・チャージャ、5.1V ブースト操作付：bq24195/2.1A および bq24195L/1A
bq24195 と bq24195L は、充電アプリケーション向けに、4.5A 充電 / 2.1A 昇圧と、2.5A 充電 / 1A 昇圧機能を統合しています。TIDA-00036 では、高い効率と少ない BOM（部品表）コストで高速充電と同期整流・昇圧 OTG（on-the-go）を実行するためのシングルチップ・ソリューションである bq24195 と bq24195L を示します。
| パッケージ | ピン数 | ダウンロード |
|---|---|---|
| VQFN (RGE) | 24 | オプションの表示 |
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
- 材質成分
- 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
推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。