AK2923T

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AK2923T is a power switching regulator designed to provide a cost effective solution for AC-DC power conversion in the system power supply. It is particularly suitable for applications requiring high efficiency, small size, no noise, and minimal external components.

The AK2923T provides excellent power conversion performance, and its features include a wide input voltage range, adjustable output voltage, wide temperature range operation, wide output voltage adjustability, quiescent supply current of 3 mA, and over-current/overvoltage protection. Furthermore, the AK2923T is highly integrated, requiring minimal external components for operation.

The AK2923T is suitable for use in applications such as industrial, automotive, and consumer markets, with the applications including LED lighting, power supplies, and telecom equipment. Additionally, it is suitable for use in AC-DC power systems requiring high efficiency, low noise, and excellent long-term stability.

The AK2923T works by converting AC input voltage into a DC output voltage using a Pulse Width Modulation (PWM) control scheme. It consists of three stages: input stage, intermediate stage, and output stage. The input stage includes a power rectifier and an EMI filter, which convert AC input into a DC voltage. The intermediate stage includes two comparators, which detect the error between reference voltage and feedback voltage. Based on the information received from the comparators, the regulation loop adjusts the voltage reference andfeedback. The output stage consists of an external power transistor and a current-limit circuit, which helps maintain operation at a stable level and protect the load from overload.

The AK2923T also features an integrated thermal protection circuit, which helps to protect the internal IC from overheating due to ambient air temperature. This circuit allows the AK2923T to operate in a wide temperature range (from -40 to85°C).

Overall, the AK2923T is a highly integrated, cost effective power conversion IC, which can be used for applications requiring low noise, high efficiency, and wide temperature range operation. It provides excellent power conversion performance and requires minimal external components for operation. It is suitable for use in LED lighting, power supplies, and telecom equipment.

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