UCC2807N-1

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The UCC2807N-1 is a current-mode, fixed-frequency DC-to-DC switching controller designed to drive N-channel MOSFETs or BJTs in a voltage regulator, DC-to-DC converter, or other power regulation applications. It is an ideal choice for designs requiring a low-cost, space-saving solution for current or voltage regulation.

This device enables switching at frequencies of up to 1000 kHz with integrated slope compensation for improved loop stability. Energizing the enable pin allows for shut down or light load flexibility. It can be operated with a wide input voltage range, from 8V to 40V, requiring only a single external resistor to select the operating frequency. It also has a maximum output switch current of 400 mA.

In applications such as transducers, battery chargers, voltage regulators, and DC-to-DC converters, the UCC2807N-1 enables efficient, noise-free power conversion through Pulse Width Modulation (PWM). It reduces the ripple on the output voltage and also helps reduce the overall part count due to integration.

The device is available in 8- and 16-pin packages, and is suitable for a wide range of industrial, computer, and telecommunication products. It provides a board area savings of up to 33 percent compared to similar solutions in larger packages.

The UCC2807N-1 has two operating modes: current mode, and power-save mode. In the current mode, the internal oscillator activates the output to an ON state and then pulses the output at the selected frequency according to the current drawn from the output. In the power-save mode, the output is disabled, meaning no current is drawn from the output. This mode can be used to reduce power consumption, minimize system cost, and extend battery life.

On the device, there are two pins for the external input voltage; one pin for the output voltage; and one pin for current-sense feedback. There is a voltage sense pin for the output voltage and a current sense pin for measuring the load current in the output circuit. When the output voltage reaches the desired set point, the UCC2807N-1 turns off the output. The device also has an on-board voltage reference for improved accuracy.

Finally, the UCC2807N-1 incorporates a shutdown input (EN pin) for user-controlled device operation. When the EN pin is set HIGH, the device turns on; when the EN pin is set LOW, the device is disabled.

In short, the UCC2807N-1 is a high performance, low-cost, space-saving solution for current or voltage regulation in applications such as transducers, battery chargers, voltage regulators, and DC-to-DC converters. Its integrated features and on-board voltage reference make it an ideal choice for cost-sensitive designs requiring a reliable power-saving solution.

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