CXLB7331是一款适用于单电池锂离子电池的完整恒流/恒压线性充电器。底部有一个热增强的8针SOP包，外部组件数量少，因此CXLB7331非常适合便携式应用。此外，CXLB7331专门设计用于USB电源规格。由于内部PMOSFET结构，无需外部感测电阻器，也无需阻塞二极管。热反馈调节充电电流，以限制在高功率运行或高环境温度下的模具温度。充电电压固定在4.2V/4.34V，充电电流可通过单电阻器。当达到最终浮充电压后，充电电流降至编程值的1/10时，CXLB7331自动终止充电循环。当输入电源（墙壁适配器或USB电源）被卸下时，CXLB7331自动进入低电流状态，将电池放电电流降至小于2μa。CXLB7331可进入关机模式，将电源电流降至55μa。其他功能包括电池温度监测、欠压锁定、自动充电和两个指示充电和充电终止的状态引脚。
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产品概述 返回TOP
CXLB7331 is a complete constant-current/constant voltage linear charger for single cell lithium-ion batteries. With a thermally enhanced 8-PIN SOP package on the bottom and low external component count make the CXLB7331 ideally suited for portable applications. Furthermore the CXLB7331is specifically designed to work within USB power specifications. No external sense resistor is needed and no blocking diode is required due to the internal PMOSFET 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 / 4.34V, and the charge current can be programmed externally with a single resistor. The CXLB7331automatically 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 CXLB7331automatically enters a low current state dropping the battery drain current to less than 2μA.The CXLB7331can be put into shutdown 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
●Protection of battery cell reverse connection
● Programmable charge current up to 1A
●No MOSFET sense resistor or blocking diode required
●Complete linear Charger in SOP8 Package for single Cell Lithium-Ion Batteries.
●Constant-Current/Constant-Voltage operation with thermal regulation to maximize Rate Without risk of overheating.
● Preset 4.2V / 4.34V charge voltage with ±1% accuracy
● Automatic Recharge
● Two Status Indication for Charge status, no battery and battery failure indicators
● C/10 charge termination
● 55μA supply current in shutdown
● 2.9V trickle current charge threshold
● Soft-Start limits inrush current
● Battery Temperature Sensing
应用范围 返回TOP
●Cellular Telephones
●Digital Still Cameras
●MP3 Players
●Bluetooth Applications
●Portable Devices
●USB Bus-Powered Chargers
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| Li-ion Battery Charger(锂电池充电芯片) | |||||||
| Part Number | VFLOAT | VIN | Max Charger | Charger | Accu. | IQ | Package |
| Type | |||||||
| CXLB7326 | 4.2V | 4.25-6.5V | 800mA | Linear | ±1% | 25uA | SOT23-5 |
| CXLB7327 | 4.2V | 4.25-6.5V | 800mA | Linear | ±1% | 55uA | SOT23-5 |
| CXLB7328 | 4.2V | 4.25-6.5V | 800mA | Linear | ±1% | 55uA | SOT23-5 |
| CXLB7329 | 4.2V | 4.25-6.5V | 800mA | Linear | ±1% | 55uA | SOT23-6 |
| CXLB7330 | 4.2V/4.34V | 4.25-6.5V | 1000mA | Linear | ±1% | 55uA | ESOP8 |
| CXLB7331 | 4.2V/4.34V | 4.25-6.5V | 1000mA | Linear | ±1% | 55uA | ESOP8 |
| CXLB7332 | 8.4V/8.7V | 4.7-20V | 2000mA | Switch | ±1% | 10uA | SOP8 |
| CXLB7333 | 4.2V/4.34V | 4.7-5.5V | 2000mA | Switch | ±1% | 1uA | ESOP8 |
| Applications：①Mobile phone②MID③PDA④Battery Charger⑤Bluetooth equipment | |||||||
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