UCC3807N-3

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The UCC3807N-3 is a fully integrated PWM DC-DC switching controller that is designed to use in high performance, low-voltage applications such as power supplies and DC-DC converters. The UCC3807N-3 provides an adjustable frequency PWM output with integrated adaptive dead-time compensation to reduce the effect of input voltage transients.

The UCC3807N-3 reduces the number of components required in the design of power supplies, DC-DC converters, and other DC-DC switching applications. It combines a low on resistance internal power switch, linear current sense, fault protection, and a windowed dual timer for PWM switching frequency modulation, in a very small 8-pin DIP package.

The UCC3807N-3 operates from a single, wide input supply range of 4.5V to 14V, making it very flexible across a variety of applications. It is compatible with standard load switch transistors, such as the UCC3856, and other P-Channel power MOSFETs. The output voltage can be easily adjusted by an external voltage divider, making it ideal for high-power, low-voltage applications.

The UCC3807N-3 has an adjustable frequency PWM controller with a built-in ripple filter, allowing for the design of power supplies and DC-DC converters with good ripple and noise suppression. The integrated adaptive dead-time compensation reduces the effect of input voltage transients from 4V to 12V, and minimizes the peak current provided to the motor.

The UCC3807N-3 also features a fully-integrated 1A linear current sense, as well as under-voltage, over-voltage, and short-circuit protection. The UCC3807N-3 also has an adjustable ramp rate for soft start, and can be configured for either current mode or voltage mode control.

In summary, the UCC3807N-3 is a high-performance PWM DC-DC switching controller designed for low-voltage applications such as power supplies and DC-DC converters. It combines an adjustable frequency PWM output with integrated adaptive dead-time compensation, linear current sensing, fault protection, and a windowed dual timer for PWM switching frequency modulation all in a small 8-pin DIP package, making it a great choice for designing high-power, low-voltage applications.

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