BQ24232
- 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.
技术文档
| 类型 | 标题 | 下载最新的英语版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 数据表 | bq2423x USB-Friendly Lithium-Ion Battery Charger And Power-Path Management IC 数据表 (Rev. J) | PDF | HTML | 2017年 4月 8日 | ||
| 应用手册 | Configuring Standalone Linear Power Path Chargers (Rev. A) | PDF | HTML | 2020年 4月 6日 | |||
| 应用手册 | BQ2423X external NTC control reference design | 2019年 3月 22日 | ||||
| 应用手册 | Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) | 2018年 5月 1日 | ||||
| 用户指南 | bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion (Rev. E) | 2017年 1月 3日 | ||||
| 模拟设计期刊 | Battery-charging considerations for low-power applications | 2016年 4月 26日 | ||||
| 米6体育平台手机版_好二三四概述 | Battery Management Solutions for Wearable and Fitness Devices (Rev. C) | 2014年 8月 18日 | ||||
| 更多文献资料 | 将符合 Qi 标准的无线电源解决方案应用于低功耗可佩戴米6体育平台手机版_好二三四 | 英语版 | 2014年 6月 6日 | |||
| 应用手册 | Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application | 2012年 11月 8日 |
设计和开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
BQ24232EVM — BQ24232 评估模块
本用户指南介绍了 bq24072/3/4/5 和 bq24320/2 (bqTiny-III™) 评估模块 (EVM)。该 EVM 为使用 bq24072/3/4/5 和 bq24320/2 米6体育平台手机版_好二三四系列的便携式应用的充电管理和系统电源解决方案的性能评估提供了便捷方法。现已推出经过完整设计和测试的模块。该充电器旨在为使用直流电源的单节锂离子或锂聚合物应用（查看数据表以选择合适器件）的系统或充电器提供 1.5A 的连续电流。该充电器出厂设计为提供 0.9A 的充电电流。虽然该 EVM 被设计成独立的评估模块，但也可以通过连接器和接头与系统和主机相连。
TIDA-01012 — 无线物联网、低功耗 Bluetooth®、4½ 位、100kHz 真正 RMS 数字万用表
TIDA-01014 — 适用于低功耗工业物联网现场计量的增强型高精度电池电量监测计参考设计
在米6体育平台手机版_好二三四 (TI) 的 SimpleLink™ 超低功耗无线微控制器 (MCU) 平台的支持下，TIDA-01014 参考设计利用 TIDA-01012 无线 DMM 参考设计来演示如何使用 bq27426 增强电池管理系统的电量监测计性能并最终优化功耗。TIDA-01014 采用无线连接的 4.5 位的 100kHz 真 (...)
TIDA-00266 — ERM 和 LRA 触觉参考设计，具有 Bluetooth® 低能耗远程
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RGT) | 16 | Ultra Librarian |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点
推荐米6体育平台手机版_好二三四可能包含与 TI 此米6体育平台手机版_好二三四相关的参数、评估模块或参考设计。