Hign-concerned Chemical : None
Model Number : 123
Type : Module
Origin : China
Condition : New
Note: The default charging current is 200MA, if you need other charging current, please modify RS1 resistor by yourself.
CN3768 module related parameters and settings
Input voltage:15-24Vdc Overcharge voltage:14.80Vdc VOLTAGE:13.55Vdc Charging current:4Amax (set by RS1 on the board) CN3768 has trickle, constant current, overcharge and float charging modes, which are ideal for charging 12V lead-acid batteries. In overcharge and float charging modes, the charging voltage is typically 14.8V and 1355V, respectively; in constant current charging mode, the charging current is set via external resistor RS1
1) Charging current setting:
ICH = 0.12V a RS1 where: ICH is the constant current charging current
RS1 is the resistor required for constant current on the board.
2)
Status indication:
CN3768 has an open drain status indication output CHRG pin. In trickle, constant current and overcharge states, the CHRG pin is pulled down to low by the internal transistor, in other states the CHRG pin is high resistance. When the battery is not connected to the charger, the CN3768 charges the output capacitor to the floating charge voltage and remains in the floating charge state with the CHRG pin high resistance. When the status indication function is not used, the CHRG pin is connected to ground.
The following shows the state of the charger corresponding to the status indication port. Here is the red LED connected to the CHRG pin
CHRG pin
Low (red LED on) state description: Trickle, constant current and overcharge modes
High resistance (red LED off) state description: three possible cases of floating charge mode, or VCC pin voltage below low voltage latch voltage, or VCC pin voltage below BAT pin voltage
The line layout is compact and regular, with good electrical insulation and mechanical stability, and can maintain stable performance under different temperature and humidity environments to ensure accuracy and reliability.
In circuit design, carefully planned lines are like precision transportation networks, and lines of different widths and spacings undertake different currents and signals transmission tasks respectively. The key signal lines are impedance matching processing, which greatly reduces signal reflection and attenuation and ensures the stable transmission of high-frequency signals.
All kinds of electronic components are soldered on the circuit board, and the solder joints are full, round, and firm and reliable. Core components like chips are perfectly connected to the circuit board through fine packaging processes to achieve high-speed data processing and interaction.
This circuit board has a wide range of responses in many fields. Whether in the industrial control field that requires extremely high stability or consumer electronics field that pursues extreme performance, it can provide solid guarantees for the stable operation of the equipment with its excellent design and reliable performance, and help various electronic devices play a powerful role.
