BD86120EFJ-E2

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BD86120EFJ-E2, a DC-DC switching regulator manufactured by Rohm, is a versatile device allowing for a wide range of applications in industrial, computing and consumer electronics markets. The BD86120EFJ-E2 is well suited for battery powered applications as well as providing load current up to 5A. With a 31.5V maximum input voltage, the BD86120EFJ-E2 is ideal for those applications requiring voltage regulation at the output.

The BD86120EFJ-E2 is a high efficiency, synchronous fixed frequency buck regulator that offers a wide range of features and functions, including adjustable output voltage, fast transient response, and programmable soft-start. The BD86120EFJ-E2 also provides an internal compensation technique, eliminating the need for compensation components, to achieve loop stability. This simplifies the overall design and allows for a wide range of applications.

In a typical application, the BD86120EFJ-E2 can achieve a 97.2% conversion efficiency for a 3.3V output when operating from an input voltage of 5V and with an output current of 5A. This translates to a significant power savings as compared to a standard linear power supply. The BD86120EFJ-E2 also features an adjustable current limit of up to 5A, reducing power dissipation in the event of an over-current fault condition. Furthermore, the current limit can be set with a minimum of external components.

The BD86120EFJ-E2 features an array of protections and diagnostics, including an overtemperature protection, overload protection, undervoltage protection and soft-start. The BD86120EFJ-E2 also features a reset-output voltage (VoutA) that allows for instant current-limit reduction of the output current. This prevents over-current damage in the event of a short-circuit fault.

At the heart of the BD86120EFJ-E2 is a buck converter with synchronous rectification. This type of converter allows for efficient power delivery, even in low output currents. The BD86120EFJ-E2 also uses a control loop, which works in conjunction with the external components to achieve the desired voltage regulation. The output voltage is compared to a reference voltage, and the difference is amplified, filtered, and then compared to an internal oscillator. When the voltage difference is larger than the oscillator, the output switches are turned on, driving the output to the desired voltage. When the voltage difference is smaller than the oscillator, the output switches are turned off, allowing the output voltage to drop. This is done at a frequency determined by the oscillator, creating a high-frequency square wave at the output.

In addition to being a high-efficiency, low cost, and powerful DC-DC buck converter, the BD86120EFJ-E2 has many other features that make it an ideal solution for a variety of applications. It features programmable frequency, current limit and soft-start, as well as undervoltage and overvoltage protection. The BD86120EFJ-E2 is RoHS compliant and comes in an 8-pin surface-mount package.

The BD86120EFJ-E2 is an ideal solution for those applications requiring low-cost and efficient voltage regulation. With its wide range of features, flexibility, and efficiency, the BD86120EFJ-E2 provides a worthwhile alternative to linear regulators or other switching regulators with lower efficiencies.

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