Each pin of the 6-pin power chip has corresponding functions.
6-pin power chip is generally used to regulate the voltage, which each pin has the corresponding function.
Where VIN is the input voltage pin, VOUT is the output voltage pin, which is usually used to connect the voltage regulator capacitor, GND is the ground pin, EN is the enable pin, generally the chip starts to work when the high voltage is connected, FB is the feedback input pin, which is used to access the voltage partial voltage ratio combined with the output circuit and adjust the output voltage.
Power chip is a common power management component, widely used in a variety of electronic products, by stabilizing the input voltage, output stable power supply voltage and current, to ensure the normal work of electronic products and improve the reliability of electronic products.
In actual use, the pins with different functions are selected according to the needs to access the corresponding circuit to achieve different working methods and effects.
6 Pin power chip each pin functions
Pin 1 (COMP) is the compensating pin of the error amplifier. The RC compensation network should be connected between the pin and the inverting input of the error amplifier (VFB) to improve the performance of the error amplifier.
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Pin 2 (VFB) is the inverting input of the error amplifier. The feedback voltage is fed into the pin and compared with the reference voltage at the in-phase input of the error amplifier to set the error voltage.
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Pin 3 (ISENSE) is the in-phase input of the current sampling comparator. The voltage drop at both ends of the current sampling resistor is applied to the pin and compared with the error voltage (maximum 1V) applied to the inverting input of the amplifier to determine the duty cycle of the output drive pulse.