The LP4054 is a high efficiency, 3.7V lithium-ion battery linear charger, where each pin is defined as follows:
< br >
1. BAT - This pin is connected to the positive battery end.
< br >
2. GND - Ground pin (ground).
< br >
3. CHG - This pin indicates the charging state, a high level indicates charging, and a low level indicates charging is complete or off.
< br >
4. EN - Power switch. A high level indicates that the device is working normally, and a low level indicates that the device is off.
< br >
5. VUSB - This pin is connected to the positive voltage of the USB power supply, or to an external power supply via a current limiter. Maximum voltage 5.5V.
< br >
6. STAT - This pin indicates the charging status, a high level indicates that charging is complete, and a low level indicates that it is charging or is off.
< br >
7. PROG - This pin is connected to the resistance pin, and the value of the resistance can adjust the charging current, ranging from 10mA to 500mA.
< br >
It should be noted that for the operation of the LP4054 pin, the correct connection and use should be carried out in accordance with its relevant specifications, so as to avoid adverse consequences such as over-current and over-voltage.
1. The pin definition of the lp4054 charging ic is: VCC is the positive electrode connected to the battery, GND is the ground, BAT is the positive electrode of the battery, PG is the charging indicator, and STAT is the charging state output. 2. lp4054 charging ic is a chip with integrated charge management function, which is widely used in the field of battery charging.
During the battery charging process, the charge is controlled by identifying the input voltage and current of the VCC, BAT and other pins, and the corresponding feedback signal is output through the PG and STAT pins when the charging is completed or the fault occurs. Therefore, mastering the pin definition of the lp4054 charging ic is of great significance for the correct use and maintenance of the battery charging process.