CXLB7250DR是一个完整的单节锂离子电池采用CC / CV的线性充电器。它是专门设计用于在USB电 源工作。 由于采用了内部MOSFET的结构，不需要外部检测电阻和隔离二极管。热反馈可对充电电流进行自动 调节，以便在大功率运行或高环境温度条件下对芯片电流加以限制。充电电压固定在4.2V，而充电电 流可通过一个电阻进行外部设置，当充电电流达到最终浮充电压后，下降到设定值1/10时， CXLB7250DR自动终止充电循环。 当输入电压（交流适配器或USB电源）被去掉时，CXLB7250DR自动进入低电流状态，同时将电池漏 电流降至2μA以下。CXLB7250DR也可以进入停机模式，供电电流降低到55μA。其他功能还包括电池 温度监测、欠压锁定、自动再充电和两个用于指示充电、结束的状态引脚
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产品概述 返回TOP
CXLB7250DR是一个完整的单节锂离子电池采用CC / CV的线性充电器。它是专门设计用于在USB电 源工作。 由于采用了内部MOSFET的结构，不需要外部检测电阻和隔离二极管。热反馈可对充电电流进行自动 调节，以便在大功率运行或高环境温度条件下对芯片电流加以限制。充电电压固定在4.2V，而充电电 流可通过一个电阻进行外部设置，当充电电流达到最终浮充电压后，下降到设定值1/10时， CXLB7250DR自动终止充电循环。 当输入电压（交流适配器或USB电源）被去掉时，CXLB7250DR自动进入低电流状态，同时将电池漏 电流降至2μA以下。CXLB7250DR也可以进入停机模式，供电电流降低到55μA。其他功能还包括电池 温度监测、欠压锁定、自动再充电和两个用于指示充电、结束的状态引脚。 CXLB7250DRis a complete CC/CV linear charger for single cell lithium-ion batteries. it is specifically designed to work within USB power Specifications. No external sense resistor is needed and no blocking diode is required due to the internal P-MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature .The charge voltage is fixed at 4.2V,and the charge current can be programmed externally with a single resistor. The +0$ automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached. When the input supply (wall adapter or USB supply) is removed the +0$automatically enters a low current state dropping the battery drain current to less than 2μA. The +0$ can be put into shut down mode reducing the supply current to 55μA. Other features include Battery temperature monitor, under-voltage lockout, automatic recharge and two status pins to indicate charge and charge termination.
产品特点 返回TOP
Programmable charge current up to 1.2A/可编程充电电流达1.2A
No MOSFET sense resistor or blocking diode required/无需MOSFET、检测电阻或隔离二极管 Complete linear Charger for single Cell Lithium-Ion Batteries/完全线性充电器单节锂离子电池
CC and CV operation with thermal regulation to maximize Rate without risk of overheating/ 恒定 电流和恒定电压操作，并具有可在无过热危险的情况下实现充电速率最大化的热调节功能。
Preset 4.2V charge voltage with ±1% accuracy/预设4.2V充电电压，精度±1% Automatic Recharge/自动再充电
Two Status Indication for Charge status, no battery and battery failure indicators/充电状态双输 出、无电池和故障状态显示
C/10 charge termination/ C/10充电终止
55μA supply current in shutdown/待机模式下的供电电流为55uA
2.9V trickle current charge threshold/2.9V涓流充电阈值
Soft-Start limits inrush current/软启动限制浪涌电流
Battery Temperature Sensing/电池温度监测功能
Available in SOP-8 and ESOP-8 package./SOP-8和ESOP-8封装
应用范围 返回TOP
Cellular Telephones/移动电话
Mobile Power Supply/移动电源
Digital Still Cameras/数码相机
MP3 Players/MP3播放器
Bluetooth Applications/蓝牙应用
Portable Devices/便携式设备
USB Bus-Powered Chargers/USB总线供电充电器
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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| 线性单节锂电充电IC | ||||||||
| 产品型号 | 输出电压 | 输入电压 | 最大充电电流 | 充电截止电压 | 精度 | 涓流充电截止电压 | 功耗 | 封装形式 |
| CXLB7244 | 4.2V | 4.5-12V | 200mA | 4.2V | ±1% | 2.9V | 55uA | SOT23-6 |
| CXLB7245DR | 4.2V | 4.5-6.0V | 300mA | 4.2V | ±1% | 2.9V | 350uA | DFN2*3-8 |
| CXLB7246DR | 4.2V | 4.25-6.5V | 200mA | 4.2V | ±1% | 2.9V | 350uA | DFN2*3-8 |
| CXLB7246MR | 4.2V | 4.25-6.5V | 200mA | 4.2V | ±1% | 2.9V | 150uA | SOT-25 |
| CXLB7247 | 4.2V | 4.25-6.5V | 1.2A | 4.2V | ±1% | 2.9V | 25uA | ESOP8 |
| CXLB7247ADR | 4.2V | 4.5-12V | 1A | 4.2V | ±1% | 2.9V | 55uA | DFN3*3-8 |
| CXLB7247B | 3.6V/4.2V | 4.25-6.5V | 1.2A | 3.6V-4.2V | ±1% | 2.9V | 25uA | ESOP8 |
| CXLB7247DR | 4.2V | 4.5V-8V | 1A | 4.2V | ±1% | 2.9V | 55uA | DFN3*3-8 |
| CXLB7248 | 4.2V | 4.25-6.5V | 800mA | 4.2V | ±1% | 2.9V | 25uA | SOT23-5 |
| CXLB7248B | 4.2V | 4.25-6.5V | 800mA | 4.2V | ±1% | 2.9V | 25uA | SOT23-5 |
| CXLB7248C | 4.2V | 4.25-6.5V | 500mA | 4.2V | ±1% | 2.9V | 25uA | SOT23-5 |
| CXLB7248D | 4.35V | 4.25-6V | 800mA | 4.35V | ±1% | 2.9V | 25uA | SOT23-5 |
| CXLB7249 | 4.2V | 4.25-6.5V | 800mA | 4.2V | ±1% | 2.9V | 85uA | SOT23-5 |
| CXLB7249B | 3.7V | 4-7V | 500mA | 3.7V | ±1% | 2.5V | 250uA | SOT23-5 |
| CXLB7249C | 2.8V | 4-7V | 500mA | 2.8V | ±1% | 2.0V | 250uA | SOT23-5 |
| CXLB7249D | 4.35V | 4.25-6.5V | 800mA | 4.35V | ±1% | 2.9V | 85uA | SOT23-5 |
| CXLB7250 | 4.2V | 4.0-8.0V | 1200mA | 4.2V | ±1% | 2.9V | 55uA | ESOP8 |
| CXLB7250A | 4.2V | 4.0-8.0V | 1200mA | 4.2V | ±1% | 2.9V | 55uA | ESOP8 |
| CXLB7250B | 4.35V | 4.0-8.0V | 1200mA | 4.35V | ±1% | 2.9V | 55uA | ESOP8 |
| CXLB7250C | 4.2V | 4.25-7.0V | 1000mA | 4.2V | ±1% | 2.9V | 55uA | ESOP8 |
| CXLB7250DR | 4.2V | 4.25-7.0V | 1000mA | 4.2V | ±1% | 2.9V | 50uA | DFN2X2-6L |
| CXLB7251 | 4.2V | 4.25-6.0V | 750mA | 4.2V | ±1% | 2.9V | 25uA | SOT23-6 |
| CXLB7251A | 4.2V | 4.25-6.0V | 800mA | 4.2V | ±1% | 2.9V | 25uA | SOT23-6 |
| CXLB7251B | 4.35V | 4.5-6.5V | 700mA | 4.35V | ±1% | 2.9V | 80uA | SOT-26 |
| CXLB7251C | 4.2V | 4.25-6.5V | 500mA | 4.2V | ±1% | 2.9V | 25uA | SOT-26 |
| CXLB7251D | 4.2V | 4.5-18V | 800mA | 4.2V | ±1% | 2.9V | 70uA | SOT-26 |
| CXLB7252 | 4.2V | 3.8-6.5V | 1A/0.5A | 4.2V | ±1% | 2.9V | 450uA | ESOP8/SOP8 |
| CXLB7253 | 4.2V | 4.5-7V | 扩流3A | 4.2V | ±1% | 2.9V | 1mA | SOP-8 |
| CXLB7366 | 4.2V | 4.5-12V | 700mA | 4.2V | ±1% | 2.9V | 55uA | SOT23-5 |
| CXLB7367 | 4.2V | 4.5-12V | 700mA | 4.2V | ±1% | 2.9V | 55uA | SOT23-6 |
| CXLB7254 | 4.2V | 4.25-6.5V | 1000mA | 4.2V | ±1% | 2.9V | 50uA | ESOP8 |
| CXLB7368 | 4.2V | 4.5-12V | 1000mA | 4.2V | ±1% | 2.9V | 55uA | ESOP8 |
| CXLB7255 | 4.2V | 4.5-5.5V | 800mA | 4.2V | ±1% | 2.9V | 48uA | DFN3*3-10 |
| CXLB7256 | 4.2V | 4.5V-18V | 1.3A | 4.2V | ±1% | 2.9V | 48uA | SOP8 |
| CXLB7256A | 4.2V | 4.5-18V | 1.6A | 4.2V | ±1% | 2.9V | 7uA | SOP-8 |
