CDS4004812 Power Supplies - Board Mount

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DC-DC converters are used to convert direct current (DC) voltage levels from one value to another value. The CDS4004812 is one example of a DC-DC converter. This device is a 4-pin step-down (buck) converter produced by CDSi and is available in a TO-220 package. The CDS4004812 is a highly efficient, low-input voltage, synchronous buck converter capable of up to 400 kHz of switching frequency. It operates from an input voltage range of 2.0V to 48V and produces an output voltage range of 0.8V to 20V. The device can provide up to 4.0A of output current with a switching frequency of 200kHz.

The CDS4004812 has numerous applications where efficient low-noise power conversion is required. It is especially useful for powering high-frequency RF circuits, and has been successfully utilized in wireless systems, mobile devices, automotive high-end electronic systems, and wireless communications. It is also well suited for powering microcontrollers, memories, and other analog and digital systems that require precision regulation.

The CDS4004812 is built on a highly advanced architecture, utilizing an all-digital power control circuit and an integrated inductor for high efficiency. It operates in pulse-width modulation (PWM) mode, producing clean, efficient power conversion. The device features an internal high-speed current sense amplifier that monitors the output current, allowing the device to accurately control and maintain the output current with minimal fluctuations. The device also includes an internal frequency compensation circuitry to ensure proper loop stability.

The working principle of the CDS4004812 is relatively simple. When the input voltage is greater than the output voltage, the device switches a MOSFET transistor "on" and "off" at a high frequency. As the MOSFET turns "on" it pulls the output voltage up towards the input voltage. As the MOSFET turns "off" the voltage drops back down towards the output voltage. This allows the device to regulate the output voltage in response to changes in the input voltage and to maintain the current in the circuit.

The CDS4004812 is a very useful device for efficient low-noise power conversion. It operates on a highly advanced all-digital power architecture and provides excellent regulation of the output voltage and current. The device is well suited for use in power-sensitive applications requiring low-noise operation, such as wireless systems, mobile devices, automotive high-end electronics, and wireless communications.

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