MMBD2004SW-7-F

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Diodes are any two-terminal electronic components that can pass electrical current in the forward direction and resist current in the reverse direction. Rectifiers are specialized diodes used to convert alternating current (AC) to direct current (DC) voltage by impeding the negative portion of the AC waveform. Rectifier arrays are packages that contain multiple rectifiers for use in applications where several diode functions are required. The MMBD2004SW-7-F package from ON Semiconductor is a four-terminal array device specifically optimized for switching power supply applications.

The MMBD2004SW-7-F package is a specialized switching diode array designed to provide reverse voltage protection of circuits in high-efficiency, low-noise switching power supplies. The device contains four Schottky diodes in a low-profile, surface mount package. The low forward voltage drop and low energy losses of the Schottky diodes make the MMBD2004SW-7-F ideal for many power conversion applications.

The MMBD2004SW-7-F is designed for use in automated surface mount (SMT) assembly and is rated for an operating temperature range from -55°C to 150°C. The device is intended for use in high-frequency, switching power supplies that require low forward voltage drop and low reverse leakage current. The MMBD2004SW-7-F is also suitable for fly-back, forward and push-pull topologies. The maximum DC forward current for the device is 2 A, with a maximum forward voltage drop of 0.7V.

The MMBD2004SW-7-F includes four internal Schottky diodes connected in the common anode configuration, as shown in Figure 1 below. This type of diode array is used when voltage protection is required in a circuit, such as when reverse voltage can cause damage or malfunction. When the device is in the forward-biased direction, the anode of the diode is connected to a positive DC voltage and the cathode is connected to the load. In the reverse direction, the anode is connected to the input voltage and the cathode is connected to ground. This configuration allows the device to provide protection to the circuit while allowing current to flow in the forward direction.

Figure 1: Diagram of the MMBD2004SW-7-F diode array package in the common anode configuration

The MMBD2004SW-7-F is useful in a variety of applications including AC-DC power conversion and voltage regulation. Due to its low forward voltage drop and low reverse leakage current, the device is well-suited for use in power supplies that require high efficiency and low noise. Additionally, the MMBD2004SW-7-F is used in flyback topologies, where it can provide both low-voltage protection and a low-voltage turn-on threshold.

The device is also useful in DC-DC conversion, such as buck and boost applications, where it may be used to reduce ripple and improve the efficiency of the power conversion process. Additionally, the MMBD2004SW-7-F can be used to protect against low-voltage overshoot, providing a low-voltage turn-on threshold. This is useful in no-load start-up applications where the input voltage must rise above a certain level before the device begins to conduct current.

In summary, the MMBD2004SW-7-F is an optimized four-terminal array from ON Semiconductor designed specifically to provide reverse voltage protection in high-efficiency, low-noise switching power supplies. The device contains four Schottky diodes in a low-profile surface mount package, with the device in the common anode configuration. The MMBD2004SW-7-F is rated for a maximum DC forward current of 2 A and a maximum forward voltage drop of 0.7 V, making it well-suited for applications that require low-voltage protection and a low-voltage turn-on threshold. The MMBD2004SW-7-F is used in a variety of applications including AC-DC power conversion, voltage regulation, and DC-DC conversion topologies.

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