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                          目录nNI嘉泰姆

   1.产品概述      2.产品特点      3.应用范围     4.技术规格书下载（PDF文档）nNI嘉泰姆

   5.产品封装      6.电路原理图     7.相关产品nNI嘉泰姆

一.产品概述nNI嘉泰姆

     CXLB7304是一款充电电流达2.5A的单节锂电开关型充电。其集成了动态路径管理功能，内部路径的开关内阻仅50mohm，允许系统在没有电池的情况下，仍然可以在适配器存在是维持系统正常工作。CXLB7304有特有的2级充电设定可通过引脚的0,1来设定，且电流设定无需昂贵的精密电阻。CXLB7304还具有输入电流自动检测维持输入电压的功能，保证输入供电不足时，不把输入接口拉死。其他锂电池充电所必须的功能，CXLB7304也一应俱全，如电池温度异常关断，充电超时关断，过流，过热保护等。CXLB7304采用QFN3x-16封装，是迄今性价比最高，外围最简洁的开关型锂电充电IC。nNI嘉泰姆

  CXLB7304 is a switching Li-Ion battery charger with dynamic power-path control and input current limiting. When a battery is connected, depending on the battery voltage, the DC-DC switching regulator either pre-conditions, fast-charges the battery or just regulates a system voltage (VSYS) to a preset voltage. It does not require an external sense resistor for current sensing. The fastcharging current is determined by programming ISET1 or ISET2 pin, depending on the state of the USB_DET. If USB_DET is high, indicating n valid USB input is present, the fast charge current is set by ISET2; otherwise, it is set by ISET1. When the battery voltage reaches the termination voltage i.e. 4.35V, the charging path disconnects SYS to BATT. The CXLB7304 also includes a dynamic power path when the SYS load current exceeds current limitof the DCDC regulator internally set, the SYS voltage falls below VBATT, CXLB7304 turns on the power-path to supplement the system load through the battery.  nNI嘉泰姆

二.产品特点nNI嘉泰姆

◆输入电压达6.5VnNI嘉泰姆
◆2.5A充电电流nNI嘉泰姆
◆动态路径管理nNI嘉泰姆
◆输入维持电压4.5VnNI嘉泰姆
◆电池充电截止电压4.35VnNI嘉泰姆

◆两级充电电流设定nNI嘉泰姆
◆无需毫欧级精密电阻nNI嘉泰姆
◆高达95%的转换效率nNI嘉泰姆
◆3MHz开关频率nNI嘉泰姆
◆空载待机电流70uAnNI嘉泰姆

◆Switching Charger with Power Path ManagementnNI嘉泰姆

◆ Up to 95% DC-DC Efficiency nNI嘉泰姆

◆ 50mΩ Power Path MOSFET nNI嘉泰姆

◆ Up to 2.5A Max charging current◆nNI嘉泰姆

◆4.35V charging termination voltage nNI嘉泰姆

◆ Instant on with a dead Battery or no Battery nNI嘉泰姆

◆ No battery detection nNI嘉泰姆

◆ No External Sense resistor nNI嘉泰姆

◆ Programmable USB and AC IN Charging CurrentnNI嘉泰姆

三.应用范围nNI嘉泰姆

◆平板电脑nNI嘉泰姆
◆智能手机nNI嘉泰姆
◆移动电源nNI嘉泰姆
◆其他含大容量锂电池的电子设备    nNI嘉泰姆

四.技术规格书（产品PDF)nNI嘉泰姆

需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！nNI嘉泰姆

 nNI嘉泰姆

五.产品封装图nNI嘉泰姆

  nNI嘉泰姆

六.电路原理图nNI嘉泰姆

   nNI嘉泰姆

七.相关芯片选择指南nNI嘉泰姆

◀ Previous:95%的转换效率CXLB7303充电电流达2.5A的单节锂电开关型充电动态路径管理功能输入电压6.5V电池充电截止电压4.2V过流过热保护

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Next▶:4颗LED电量显示移动电源CXLB7305大容量开关型单节锂电池3A充电电流芯片电池端升压给输出5V/2.1A的电流OTG内阻补偿技术4.2V/4.35V电池可选输入输出限流NTC