CXLB7305 is a switching Li-Ion battery charger capable of delivering up to 3A of charging current to the battery and also capable of delivering up to 2.1A in boost OTG operation. It also includes an externally programmable fuel gauge system for power indication. For charging, it uses a propriJTETry control scheme that eliminates the current sense resistor for constant current control, thereby improving efficiency and reducing costs. It can also output a 5V voltage in the reversed direction by boosting from the battery. Therefore, it only needs a single inductor to provide power bi-directionally. Together with the build-in Micro-controller functions, such as push-button, auto load detection, and fuel gauging features, CXLB7305 is truly an ideal all-in-one solution for battery charging and discharge applications, such as power banks, smart phones, and tablets with only one USB port that can be used for both charging battery and USB OTG function.
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目录
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）
一.产品概述
CXLB7305是一款专门为大容量锂电池系统设计的高达3A充电电流的开关型单节锂电池充电芯片，同时此芯片也可以逆向操作，从电池端升压给输出至少5V/2.1A的电流（OTG）。CXLB7305同时集成了一个移动电源所需要的所用功能，可外设电量显示电平，并实现4颗LED的电量显示。CXLB7305也集成了充电领域最先进的内阻补偿技术，并可由客户外设内阻补偿程度。同时它还提供系统用电的路径，可外设充电电流，充电截止电流，4.2V/4.35V电池可选，输入限流，输出限流，NTC等众多功能。CXLB7305还提供自动模式和手动按键模式，是一个行业内功能最齐全，性能最好的一颗移动电源领域单芯片解决方案。
CXLB7305 is a switching Li-Ion battery charger capable of delivering up to 3A of charging current to the battery and also capable of delivering up to 2.1A in boost OTG operation. It also includes an externally programmable fuel gauge system for power indication. For charging, it uses a propriJTETry control scheme that eliminates the current sense resistor for constant current control, thereby improving efficiency and reducing costs. It can also output a 5V voltage in the reversed direction by boosting from the battery. Therefore, it only needs a single inductor to provide power bi-directionally. Together with the build-in Micro-controller functions, such as push-button, auto load detection, and fuel gauging features, CXLB7305 is truly an ideal all-in-one solution for battery charging and discharge applications, such as power banks, smart phones, and tablets with only one USB port that can be used for both charging battery and USB OTG function. CXLB7305 is in QFN4x4-32 package.
二.产品特点
◆充电电流高达 3A
◆3A充电效率 >92%
◆升压放电高达5V/2.1A
◆升压最高效率达95%
◆4颗LED电量显示
◆输入6.0V OVP
◆待机功耗 10uA
Š◆ Bi-Directional Power conversion with Single Inductor Š
◆Switching Charger Š
◆5V Synchronous Boost Š
◆Up to 95% Efficiency Š
◆Up to 3A Max charging current and 2.1A discharging Š
◆No-Battery detection Š
◆No External Sense resistor Š
◆NTC thermistor input
三.应用范围
◆大容量移动电源
◆移动MiFi
◆移动存储
◆便携智能设备
四.技术规格书（产品PDF)
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！
五.产品封装图
六.电路原理图
七.相关芯片选择指南
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锂电充电 |
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|
Device |
Device |
Architecture |
VIN |
Final |
Power Path |
IOUT |
Vhold |
Switching |
IQ |
Package |
|
|
Description |
(min) |
(max) |
Vbat |
Rdson |
(max) |
(V) |
Frequency |
(uA) |
|||
|
(V) |
(V) |
(mohm) |
(A) |
(Hz) |
|||||||
|
2.5A开关型锂电充电 |
开关充电+路径管理 |
4.3 |
6.5 |
4.2 |
50 |
2.5 |
4.3 |
3M |
70 |
QFN3x3-16 |
|
|
2.5A开关型锂电充电 |
开关充电+路径管理 |
4.3 |
6.5 |
4.2 |
50 |
2.5 |
4.3 |
3M |
70 |
ESOP8 |
|
|
2.5A开关型锂电充电 |
开关充电+路径管理 |
4.3 |
6.5 |
4.2 |
50 |
2.5 |
4.5 |
3M |
70 |
QFN3x3-16 |
|
|
2.5A开关型锂电充电 |
开关充电+路径管理 |
4.3 |
6.5 |
4.35 |
50 |
2.5 |
4.5 |
3M |
70 |
QFN3x3-16 |
|
|
3A开关型充电/OTG |
开关充电/OTG |
4.3 |
6 |
4.2/4.35 |
N/A |
3 |
Adj |
1-2M |
10 |
QFN4x4-32 |
|
|
3A开关型充电/OTG |
开关充电/OTG |
4.3 |
6 |
4.2 |
N/A |
3 |
4.6 |
1-2M |
10 |
QFN3x3-20 |
|
|
2.5A开关型锂电充电 |
开关充电+路径管理 |
4.3 |
6.5 |
4.35 |
50 |
2.5 |
4.3 |
3M |
70 |
ESOP8 |
|
