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bq2404x系列器件是面向空间受限的便携应用的高度集成锂离子和锂聚合物线性充电器器件。该器件由USB端口或交流适配器供电。带输入过压保护的高输入电压范围支持低成本,非稳压适配器。
bq2404x具有为电池充电的单电源输出。如果在10小时的安全定时器期间内平均系统负载无法让电池充满电,则可以使系统负载与电池并联。
电池充电经历以下三个阶段:调节,恒定电流和恒定电压。在所有充电阶段,内部控制环路都会监控IC结温,当其超过内部温度阈值时,它会减少充电电流。
充电器功率级和充电电流感应功能完全集成在了一起。该充电器具有高精度电流和电压调节环路功能,充电状态显示,和充电终止功能。预充电电流和终止电流阈值都可以通过bq24040和bq 24045上的外部电阻进行编程。充电电流值也可以通过一个外部电阻进行编程。
Number of Series Cells |
Function |
Cell Chemistry |
Battery Charge Voltage (Min) (V) |
Battery Charge Voltage (Max) (V) |
Features |
Charge Current (Max) (A) |
Control Interface |
Control Topology |
Rating |
Operating Temperature Range (C) |
Pin/Package |
Operating Vin (Min) (V) |
Operating Vin (Max) (V) |
Absolute Vin (safety rating) (Max) ((V)) |
BQ24040 | BQ21040 | BQ24041 | BQ24045 | BQ24050 | BQ24090 |
---|---|---|---|---|---|
1 | 1 | 1 | 1 | 1 | 1 |
Charger | Charger | Charger | Charger | Charger | Charger |
Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer |
4.2 | 4.2 | 4.2 | 4.35 | 4.2 | 4.2 |
4.2 | 4.2 | 4.2 | 4.35 | 4.2 | 4.2 |
JEITA BAT Temp Monitoring (Thermistor Pin) Temp Monitoring (Thermistor Pin) Thermal Regulation Vin DPM (OK for Solar Power Source) | Temp Monitoring (Thermistor Pin) | JEITA BAT Temp Monitoring (Thermistor Pin) Temp Monitoring (Thermistor Pin) Thermal Regulation Vin DPM (OK for Solar Power Source) | JEITA BAT Temp Monitoring (Thermistor Pin) Temp Monitoring (Thermistor Pin) Thermal Regulation Vin DPM (OK for Solar Power Source) | JEITA BAT Temp Monitoring (Thermistor Pin) Temp Monitoring (Thermistor Pin) Thermal Regulation Vin DPM (OK for Solar Power Source) | Temp Monitoring (Thermistor Pin) Thermal Regulation Vin DPM (OK for Solar Power Source) |
1 | 0.8 | 1 | 1 | 1 | 1 |
Standalone (RC-Settable) | Standalone (RC-Settable) | Standalone (RC-Settable) | Standalone (RC-Settable) | Standalone (RC-Settable) | Standalone (RC-Settable) |
Linear | Linear | Linear | Linear | Linear | Linear |
Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
0 to 125 | 0 to 125 | 0 to 125 | |||
10WSON | 6SOT-23 | 10WSON | 10WSON | 10WSON | 10MSOP-PowerPAD |
3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 4.45 |
28 | 28 | 28 | 28 | 28 | 6.45 |
30 | 30 | 30 | 30 | 30 | 12 |