UC2855BDWG4

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UC2855BDWG4 is a power factor correction (PFC) integrated circuit (IC) designed to deliver high-power electrical heating, air conditioning, lighting, motor, pump and fan applications. It is a combination of an over-current limit controller, an adjustable linear regulator and a limited number of power factor regulation modes.

The UC2855BDWG4 is designed to regulate the voltage by responding to an adjustable reference voltage from 0.25V to 4.95V and external current sensing. It has an in-built current sensing amplifier, voltage comparator and a current sense amplifier with an adjustable trip point for over-current protection.

The IC includes a current regulator, an adjustable linear regulator and a single stage power factor correction with various modes. The current regulator detects the current that is available from external conditions. This information is then compared with a reference voltage and an internal current load. The linear regulator adjusts the output voltage using an adjustable feedback loop and sets the trip point for the over-current protection. The single stage power factor correction provides the PFC boost current and maintains the power factor and output voltage.

The UC2855BDWG4 provides low noise, improved power regulation and system protection. It can be used in a wide range of AC applications, such as motor speed control, heating, air-conditioning, LED lighting and small audio amplifiers. It can be used with minimal external components and can be easily programmed by adjusting the external resistor and capacitor settings.

The IC is suitable for operating on a wide range of operating voltages, from 90VDC to 250VAC. It is available in a variety of packages, including DIP, SOIC, MSOP, and QFN. It also provides thermal protection, reverse current protection and output over-voltage protection.

The UC2855BDWG4 is an ideal solution for a wide range of AC and DC applications, providing high precision and high power output with enhanced system protection, low noise operation and minimal component count. It is capable of delivering power up to 40W, with an efficient and reliable power supply operations. It is a great choice for applications that require high-power output, power regulation and system protection.

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