How does USB 5V charge dual 8.4V/three 12.6V series lithium batteries?

Portable mobile Electronic devices have a large number of applications powered by two or three strings of lithium batteries. The traditional step-down charging management requires the input voltage to be higher than the battery voltage, and the voltage standards of the matching adapters are not uniform. Battery charging hassle and inconvenience. In addition, charging with a dedicated adapter also causes waste. If the charging adapter is lost or it is difficult for consumers to find it, the terminal product cannot be used in time or a dedicated charging adapter needs to be purchased. Due to the popularity of mobile phones, 5V power chargers have been used on a large scale.In addition, the USB 5V interface was originally an international standard interface.

Portable mobile electronic devices have a large number of applications powered by two or three strings of lithium batteries. The traditional step-down charging management requires the input voltage to be higher than the battery voltage, and the voltage standards of the matching adapters are not uniform. Battery charging hassle and inconvenience. In addition, charging with a dedicated adapter also causes waste. If the charging adapter is lost or it is difficult for consumers to find it, the terminal product cannot be used in time or a dedicated charging adapter needs to be purchased. Due to the popularity of mobile phones, 5V power chargers have been used on a large scale. In addition, the USB 5V interface is originally an international standard interface, and common computers and various terminals have rich 5V output interfaces. For products powered by 8.4V and 12.6V lithium batteries, the best way is to use a universal mobile phone adapter to charge, and boost charging management comes into being. The step-up charging management is different from the step-down type in that the input voltage is lower than the battery voltage, so that the USB_5V can be used as a charger for two strings and three strings of lithium batteries. Portable mobile electronic devices are perfect with a USB charging cable when they leave the factory. Solve the problems of the above applications, save the cost of the end product and avoid the waste of materials.

Shenzhen Yongfukang Technology Co., Ltd. has launched a series of USB 5V input boost charging management solutions for 8.4V two-series and 12.6V three-series lithium batteries, which perfectly solves the charging problems of such products.

USB_5V input is used for two lithium batteries in series with 8.4V charge management chip: CS5080, CS5082, CS5086, CS5090; for three lithium batteries in series with 12.6V charge management chip: CS5095. All models have input adaptive function, and any USB interface of any size can be charged normally, and the maximum charging current is 1.5A. In addition, all have complete trickle, constant current, constant voltage charging process, various safe and reliable protection measures and charging status indication, most models also have NTC temperature control function. CS5086 also has a power balance function, which greatly improves the cycle charging times and stability of the battery. The boosted charging management chip is suitable for use in Bluetooth audio, juicers, POS machines, handheld printers, drones, fascia gun power tools and other product fields, and has broad market prospects in the future.

The application features are as follows:

1. Pin diagram and pin description

How does USB 5V charge dual 8.4V/three 12.6V series lithium batteries?

2. CS5080_ CS5082_ CS5090_ CS5095 application related

(1). CS5080_ CS5082_ CS5090_ CS5095 DEMO board schematic

(2). CS5080_ CS5082_ CS5090_ CS5095 DEMO board PCB top-level design

(3). CS5080_ CS5082_ CS5090_ CS5095 DEMO board PCB bottom design

(4). CS5080_ CS5082_ CS5090_ CS5095 DEMO board patch picture

(5). CS5080_ CS5082_ CS5090_ CS5095 DEMO board bill of materials

(6). CS5080_ CS5082_ CS5090_ CS5095 DEMO board physical drawing

3. CS5086 application related

(1). Schematic diagram of CS5086 DEMO board

(2). CS5086 DEMO board PCB top-level design

(3). CS5086 DEMO board PCB bottom design

(4). CS5086 DEMO board patch diagram

(5). CS5086 DEMO Board Bill of Materials

(6). Physical drawing of CS5086 DEMO board

3. USB_5V input, two lithium batteries 8.4V/8.7V, three lithium batteries 12.6V boost charging management selection table

CS5080/CS5082/CS5090/CS5095 series are pin compatible.

The Links:   LM151X05-A3C1 2MBI75N-060