現在提供此產品的更新版本
功能相同，但引腳輸出與所比較的裝置不同
BQ24073
- 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
- Functional Safety-Capable (BQ24074)
- 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 1.5-A charge current with current monitoring output (ISET)
- Programmable input current limit up to 1.5 A for wall adapters
- System output tracks battery voltage (BQ24072)
- Programmable termination current (BQ24074)
- Battery disconnect function with SYSOFF input (BQ24075, BQ24079)
- Programmable pre-charge 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
- Safety-Related Certification:
- IEC 62368-1 Certification (BQ24072)
The BQ2407x series of devices are 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 an AC adapter and support charge currents up to 1.5 A. The input voltage range with input overvoltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the BQ2407x to meet USB-IF inrush current specifications. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing incorrectly configured USB sources.
The BQ2407x 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, the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery. The power path management architecture also lets the battery supplement the system current requirements when the adapter cannot deliver the peak system currents, thus 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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ2407x Standalone 1-Cell 1.5-A Linear Battery Charger with PowerPath datasheet (Rev. N) | 2021年 10月 27日 | |
| Application note | Configuring Standalone Linear Power Path Chargers (Rev. A) | PDF | HTML | 2020年 4月 6日 | |
| Application note | Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) | 2018年 5月 1日 | ||
| User guide | bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion (Rev. E) | 2017年 1月 3日 | ||
| Application note | Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application | 2012年 11月 8日 | ||
| Analog Design Journal | Designing a linear Li-Ion battery charger with power-path control | 2009年 5月 1日 | ||
| Analog Design Journal | Q2 2009 Issue Analog Applications Journal | 2009年 5月 1日 | ||
| User guide | Power-Path Li-Ion Charger Selection | 2008年 10月 17日 |
設計與開發
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BQ24073EVM — BQ24073 評估模組
This user’s guide describes the bq24072/3/4/5/9(T) and bq24230/2 (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 bq24072/3/4/5/9(T) and (...)
TIDA-050007 — 無線耳塞式耳機電池的超低待機電源參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGT) | 16 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
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- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
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