TP4056 use precautions

Chip ceramic capacitor

6035 18.432 ceramic

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

MOS power IC full range

1. TP4056 is packaged in SOP8-PP. The bottom heat sink and PCB board need to be soldered well in use. The bottom heat dissipation area needs to be filled with holes, and the large area copper foil heat dissipation is excellent. Multi-layer PCB plus sufficient vias have a good effect on heat dissipation, and poor heat dissipation may cause the charging current to be reduced by temperature protection. Adding appropriate vias to the heat sink on the back of the SOP8 also facilitates manual soldering. (The solder can be soldered from the back vias to reliably solder the heat sink).

2, TP4056 is used in high current charging (700mA or more), in order to shorten the charging time, it is necessary to increase the heat dissipation resistance, the resistance range is 0.2 ~ 0.5Ω. The customer selects the appropriate resistor size according to the usage.

3. In the TP4056 application, the 10u capacitor position of the BAT terminal is close to the BAT end of the chip, and it should not be too far.

4. In the TP4056 test, the BAT terminal should be directly connected to the battery, and the ammeter cannot be connected in series. The ammeter can be connected to the VCC terminal.

5, in order to ensure reliable use under various conditions, to prevent chip damage caused by spikes and glitch voltage, it is recommended to connect a 0.1u ceramic capacitor to the BAT terminal and the power input terminal, and it is very close to the TP4056 chip during wiring.

6, TP4056 can not be reversed battery. Will burn the tablets. There is anti-lithium battery reverse connection protection circuit.

Please use 4.4v~5v power supply for power supply. The 4.2k~10k resistor is randomly distributed. It may be 4.2k, 5.1k, or 10k. It can be used. The Rx is a voltage-regulating resistor. The initial state can be short-circuited with a wire before it is The corresponding resistance is taken according to its cutoff voltage.

1. Please use 4.7v~12v power supply with constant current for power supply;

2, if you want to add a thermistor to the thermal port, please remove the following resistor to prevent 1879 misjudgment; 3, 3.6, 4.2v select the pad, please flush the pad to the Li battery.

Please follow the instructions to connect correctly, the battery will be connected in reverse blue light

1. Input power. If you use max1879, please use 5v~13.2v power supply. 5v is the lowest voltage for normal operation, so please keep the input voltage more than 5v during the whole process, so that max1879 can't work normally or the charging current is reduced. It is recommended to use a power supply of 5.2v or higher and a charging current of 2A or more. Because of the voltage drop of the power line under high current, many power supplies cannot guarantee the 5V voltage required for the constant current source, so it is necessary to use a power supply of 5.2v or higher.

2, the input voltage, if driving mce or p7, and other LEDs, the voltage range is 4.1v ~ 13.2v, (already compatible with 2 Li and 3 Li battery).

3, output current, such as with max1879 and other chargers, the current range is 0.5A ~ 3A (My maximum test current is 5A, but it is not recommended for you to use, I can not find a suitable charging current than 5A The battery was tested).

4. Output current. Such as driving mce or p7 led, the output current range is 0.5A ~ 6A (maximum 6A, it is estimated that you have two opportunities to use in parallel, haha).

5, the current adjustment interface, has been adjusted to 1.5A when sent to your hand, if you need other current, you can remove the resistance of the current adjustment resistor access terminal, change other resistors to adjust the current you need, (Because in order to expose the complete pad for everyone to demonstrate, so the resistor is not soldered on the pcb on the figure), you can also use an external potentiometer to make current adjustment, but considering the unreliability of the potentiometer, it is not It is recommended to adjust to the desired current and replace it with a fixed resistor. Because the pad is in a high-magnification amplifier circuit, it is easy to be disturbed. Please take the lead wire too long. The following is the corresponding resistance value for the common current.