F1857CAD400

Introduction

The F1857CAD400 (F1857CAD400) is a Low Input Capacitance, Low Input Voltage, Low Input Saturation Current rectifier array developed by Fairchild Semiconductor. It is designed to provide four low-voltage, efficient rectification of AC frequencies up to 10MHz. This array is designed to operate from an input voltage range of 3.0V to 18V, with a maximum current capability of 0.8A.

Applications of the F1857CAD400

The F1857CAD400 is commonly used in many applications, from low-voltage power supply design to power management applications. Its low input capacitance and low on-state resistance make it ideal for providing efficient rectification of low-frequency signals up to 10MHz. Its low input saturation current and low input voltage make it suitable for applications where a low-voltage power supply is required, such as in portable devices or other applications where space constraints are a factor. It is also relatively immune to reverse-recovery time (trr), eliminating the need for elaborate cooling measures.

Working Principle of F1857CAD400

The F1857CAD400 is a four-channel Rectifier Array which enables efficient rectification of low-voltage, low frequency AC signals. The rectifier array is comprised of four series-connected Schottky diodes. When an AC signal is supplied to the F1857CAD400, these four diodes conduct alternately to provide a DC output voltage. The four diodes are arranged in an “anti-parallel” configuration, meaning one diode conducts when the other three are reversed biased. This arrangement allows the F1857CAD400 to provide efficient rectification.

The F1857CAD400 features low input capacitance, low input voltage, and low input saturation current, allowing the device to operate at higher frequencies (up to 10MHz). Additionally, its low trr (reverse-recovery time) means that elaborate cooling measures are not needed, making it suitable for most applications.

Conclusion

The F1857CAD400 is a relatively new rectifier array developed by Fairchild Semiconductor. It is designed to provide low-voltage, efficient rectification of low-frequency AC signals up to 10MHz. Additionally, its low input capacitance and low trr make it suitable for a variety of low-voltage power supply applications.