BQ24052
- Charging
- 1% Charge voltage accuracy
- 10% Charge current accuracy
- Pin selectable USB 100-mA and 500-mA maximum input current limit
- Programmable termination and precharge threshold
- Protection
- 30-V Input Rating; With 6.6-V input overvoltage protection
- Input voltage dynamic power management
- 125 °C Thermal regulation; 150°C thermal shutdown protection
- OUT Short-circuit protection and ISET short detection
- Operation over JEITA range through battery NTC - ½ fast-charge-current at cold, 4.06 V at hot
- Fixed 10-hour safety timer
- System
- Auto input source detection (D+, D– pins)
- No device transceiver required
- USB Friendly
- Automatic termination and timer disable mode (TTDM) for absent battery pack with thermistor
- Status indication – charging/done
- Available in small 2-mm × 2-mm package
- Auto input source detection (D+, D– pins)
The BQ2405x series of devices are highly integrated Li-Ion and Li-Pol linear chargers devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high-input voltage range with input overvoltage protection supports low-cost unregulated adapters.
The BQ2405x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10-hour safety timer.
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 an 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 precharge current and termination current threshold are programmed through an external resistor. The fast charge current value is also programmable through an external resistor.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ2405x 1-A, Single-Cell Li-Ion and Li-Pol Battery Charger With Automatic Adaptor and USB Detection datasheet (Rev. D) | PDF | HTML | 2021年 5月 26日 |
| Application note | BQ2404x, BQ2405x, and BQ2409x Frequently Asked Questions | 2019年 2月 25日 | ||
| Application note | Selecting the Best bq2404x/5x/9x Single Cell Battery Charger for your Applicatio | 2012年 11月 29日 | ||
| User guide | 0.8-A, Single-Input, Single-Cell Li-Ion Battery Charger UG | 2009年 9月 29日 |
設計與開發
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| 封裝 | 引腳 | 下載 |
|---|---|---|
| WSON (DSQ) | 10 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點