The product information

Functional analysis of the most professional warm hand treasure PCBA

2021-11-11

Functional analysis of the most professional warm hand treasure PCBA

Functional description of warm hand treasure PCBA independently developed by Dongguan Changsen Electronic Technology Co., Ltd

1、 Electrical parameters of warm hand treasure
Input voltage: 5.0V ~ 5.5V
Output voltage: 4.75V ~ 5.2v
Battery charging and saturation voltage: 4.2V ± 0.03V
Charging current: 1.8a-2.0a
Overvoltage protection: 4.3v ± 0.05v
Standby current: 100ua ± 10 μ A
2、 Warm hand treasure features
Power indication function
Overcurrent protection function
Overvoltage protection function
Short circuit protection function
Standby low power consumption
No load automatic shutdown
Lithium battery protection function
2A charge 2A discharge
Temperature constancy function
3、 Warm hand treasure charging function and operation:
1. System charging mode: the system is charged synchronously, and the charging efficiency is higher than 94%; Input voltage: 5.0v-5.5v, charging current: 1.8-2.0a.
2. Charging function operation:
1. Charging operation:
In standby or working mode, insert DC5V power supply, the system will automatically turn on the charging system and display the current power,
The highest power indicator flashes, indicating that the system is in charging state; With the increase of battery capacity, the power indicator led1-3 rises in turn. When the battery is full, all the power indicator led1-3 are on for a long time.
2. When charging, single press, double press and long press are invalid to prevent the chip from overheating due to the simultaneous operation of charging and warm hand treasure.
two two