If the 5-pin chip on the power module is damaged and needs to be replaced, the wiring sequence cannot be guaranteed to be the same as the original. Therefore, before replacing the chip, first confirm the original wiring mode, or find the wiring diagram of the power module to ensure that the cable connection is correct.
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In general, the wiring mode of the 5-pin chip is as follows:
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1. Vcc: This is the positive terminal of the 5V power supply, connected to the positive terminal of the power supply or the positive terminal of the adapter.
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2. Vcc - : This is the negative terminal of the 5V power supply, which is connected to the negative terminal of the power supply or the negative terminal of the adapter.
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3. SDA: This is the data signal line of the I2C bus, which is connected to the SDA pin of the main control chip.
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4. SCL: This is the clock signal line of the I2C bus, which is connected to the SCL pin of the main control chip.
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5. RES: This is the hardware reset signal, which is connected to the main control chip or ground wire. An I\/O port can usually be reserved for software reset.
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If the wiring diagram is found, the new 5-pin chip can be connected according to the original wiring method; If no wiring diagram is available, connect cables according to the preceding wiring method. At the same time, it is recommended to carefully check the chip pin and wiring position before wiring to ensure that the connection is correct and avoid short-circuit or misalignment of the pin resulting in chip damage.
Each module is connected in series to the circuit so that the current flowing through each module is the same.