KA3842B

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

KA3842B is an integrated circuit belonging to PMIC (Power Management Integrated Circuit) family. It is an offline switcher that is designed to convert alternating current (AC) electricity into direct current (DC) power with less power loss and enhanced efficiency. The application field of KA3842B can cover a great range of power needs, such as LED driver circuit, low power switching regulator circuit, and etc.

So what is the working principle behind this efficient and powerful KA3842B integrated circuit? The core concept of KA3842B lies in its high-frequency oscillator. The high-frequency oscillator is firstly activated by a low frequency clock. Then the high frequency signal will be amplified by a transformer and it will be used to drive the external power switch, thus build up a mini power supply circuit.

When a high frequency oscillation is generated, it will ultimately turn on the power MOSFETs at the same time that voltage will be accumulated at the output capacitor. This feature allows KA3842B to provide low power loss with high efficiency. After the power supply reaches a peak value, the power MOSFETs then need to be rapidly turned off, at this time the current starts to discharge from the output of the KA3842B, thus secondary output can be generated.

Altogether, KA3842B has some distinct advantages which make it widely used in the power management circuit, it can provide low power loss, simple circuit design, and requires less external components. It is a member of PMIC family as a AC DC with great application potentials.

The specific data is subject to PDF, and the above content is for reference