KA3882ED

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The KA3882ED is a DC-to-DC step-down integrated circuit from STMicroelectronics. It is used in applications where an isolated DC-DC converter is required and is designed specifically for dual-output (positive and negative) isolated power with a high efficiency and low noise operation. The KA3882ED has a wide range of applications, including medical monitoring and control, and consumer consumer electronics.

The KA3882ED is part of the STMicroelectronics offline switchers family, and operates in two main phases: the linear regulation phase and the pulse width modulation (PWM) phase. During the linear regulation phase, a low current is sent through the primary winding of the transformer and the secondary winding senses the output voltage. The feedback device then adjusts the current flow to maintain the voltage level. During the modulation phase, PWM circuity turns on and off the transformer at high frequency. The primary winding is energized by a high current, inducing a voltage via the transformer’s secondary winding. The voltage signal acquired across the secondary winding is then sampled by a voltage reference which is used to adjust the duty cycle of the PWM. This is repeated until the output voltage is regulated at the desired level.

The KA3882ED also incorporates a number of features, including: a high-efficiency, low-noise operation; 1A output current capability; adjustable output voltage; secondary-side high voltage overshoot protection; and built-in over-temperature protection. Additionally, it can be used in either a single-output or dual-output configuration, making it suitable for powering a wide range of devices or circuits.

The KA3882ED is perfect for applications requiring an isolated DC-DC converter, where a high efficiency and low noise operation are desired. Its adjustable output voltage and over-temperature protection features make it suitable for a wide range of applications. Additionally, it is easy to use, with no external components required, making it an ideal choice for engineers and hobbyists alike.

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