UC2842BDR2G Integrated Circuits (ICs)

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The UC2842BDR2G is a DC-DC switching controller designed to improve efficiency and reduce system size in DC-DC power converter systems. The device is suitable for applications such as battery-powered portable systems, distributed power systems, and applications requiring high efficiency at low power levels. Its architecture enables stand alone, standalone/synchronous mode, and current-mode PFC (CMPFC) operation.

The IC is available in an 8-lead SOIC package. It operates over a wide input voltage range of 3.1V to 24V and a temperature range of -40°C to +85°C. Shipped in an 8-lead SOIC package with the exposed thermal pad, the IC is a low profile and is easy to use. It features a wide input voltage range and a PWM frequency of 500 Hz.

The UC2842BDR2G provides the user with multiple working principles. It is designed to offer a high level of reliability and is well-suited for harsh environments. It has a range of operating modes including current-mode PFC (CMPFC), stand-alone mode and synchronized mode.

In current-mode PFC, the device recognizes when the output voltage is out of range and then adjusts the flyback frequency to maintain the desired output voltage. It also features a fault protection circuit which automatically shuts down the converter when a fault is detected.

In stand-alone mode, the UC is designed to be independent, requiring only an input supply and output voltage setting. Through the control loop, the device maintains the output voltage by adjusting the on-time of the switch.

Synchronized mode allows companies to enable multiple power stages and devices to synchronously operate from a common synchronization signal. This reduces system costs by having fewer control and synchronization circuitry.

The UC2842BDR2G also includes over-current protection and overvoltage protection, providing additional protection against power surges and transients. The device also offers soft-start, allowing for a safer, slower power up.

Additional features provided by the UC2842BDR2G include asynchronous rectification, current mode control with programmable slope compensation, and adjustable UVLO. These and other improvements to the design make the UC2842BDR2G a cost-effective and efficient DC-DC switching controller.

The UC2842BDR2G is an ideal solution for applications such as distribution systems, backup systems, and portable devices. With its multiple operating modes and a wide range of features, it is well-suited for a variety of demanding applications.

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