BQ24230
- Fully Compliant USB Charger
- Selectable 100-mA and 500-mA Maximum Input Current
- 100-mA Maximum Current Limit Ensures Compliance to USB-IF Standard
- Input-based Dynamic Power Management (VIN- DPM) for Protection Against Poor USB Sources
- 28-V Input Rating With Overvoltage Protection
- Integrated Dynamic Power-Path Management (DPPM) Function Simultaneously and Independently Powers the System and Charges the Battery
- Supports up to 500-mA Charge Current With Current Monitoring Output (ISET)
- Programmable Input Current Limit up to 500 mA for Wall Adapters
- Programmable Termination Current (bq24232)
- Programmable Precharge and Fast-Charge Safety Timers
- Reverse Current, Short-Circuit, and Thermal Protection
- NTC Thermistor Input
- Proprietary Start-Up Sequence Limits Inrush Current
- Status Indication – Charging/Done, Power Good
- Small 3 mm × 3 mm 16-Lead QFN Package
The bq2423x series of devices are highly integrated Li-ion linear chargers and system power-path management devices targeted at space-limited portable applications. The devices operate from either a USB port or ac adapter and support charge currents between 25 mA and 500 mA. The high-input-voltage range with input overvoltage protection supports low-cost, unregulated adapters. The USB input current limit accuracy and start-up sequence allow the bq2423x to meet USB-IF inrush current specification. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing poorly designed or incorrectly configured USB sources.
The bq2423x features dynamic power-path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold, thus supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination, and enables the system to run with a defective or absent battery pack. Additionally, this enables instant system turn-on even with a totally discharged battery. The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents, enabling the use of a smaller adapter.
The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded.
The charger power stage and charge current sense functions are fully integrated. The charger function has high-accuracy current and voltage regulation loops, charge status display, and charge termination. The input current limit and charge current are programmable using external resistors.
技術資料
| 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 | bq2423x USB-Friendly Lithium-Ion Battery Charger And Power-Path Management IC データシート (Rev. J) | PDF | HTML | 2017年 4月 8日 | ||
| アプリケーション・ノート | Configuring Standalone Linear Power Path Chargers (Rev. A) | PDF | HTML | 2020年 4月 6日 | |||
| アプリケーション・ノート | BQ2423X external NTC control reference design | 2019年 3月 22日 | ||||
| アプリケーション・ノート | Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) | 2018年 5月 1日 | ||||
| Analog Design Journal | 2Q 2016 Analog Applications Journal Issue | 2016年 4月 26日 | ||||
| Analog Design Journal | Battery-charging considerations for low-power applications | 2016年 4月 26日 | ||||
| アプリケーション・ノート | Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application | 2012年 11月 8日 | ||||
| アプリケーション・ノート | MSP430 Based Lithium-Ion Polymer Battery Charging and Gauging Solution Using USB (Rev. A) | 2012年 6月 27日 |
設計および開発
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。
BQ24230EVM — BQ24230 評価モジュール
This user’s guide describes the bq24072/3/4/5 and bq24320/2 (bqTiny-III™) evaluation module (EVM). The EVM provides a convenient method for evaluating the performance of a charge management and system power solution for portable applications using the bq24072/3/4/5 and bq24320/2 product (...)
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| 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 |
|---|---|---|
| VQFN (RGT) | 16 | Ultra Librarian |
購入と品質
- 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
- ファブの拠点
- 組み立てを実施した拠点
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