MMBD4448HCQW-7

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The MMBD4448HCQW-7 is an array of four dual diode-connected Transistors in a SOT-23 package. The device can switch between Source and Sink and allows the user to manage the high-frequency current applications, such as soft start and LED current line protection. The device is widely used in LED lighting and HVAC applications, as well as automotive applications, such as steering control systems. It combines the speed of MOSFETs with the simplicity of Bi-CMOS technology.

Application Field

MMBD4448HCQW-7 is subject to automotive grade AEC-Q101, meaning that it has passed reliability and robustness testing under extreme conditions. Due to its Q101 approval, it is optimal for automotive applications, such as vehicle power management, control systems, and motors. Additionally, it can be used in other applications such as, HVACs, motor drive, power switching and others.

Working Principle

MMBD4448HCQW-7 features four N-channel MOSFETs and also four P-channel in a single package. The two components depict a high-side and a low-side switch. It enables both sink and source configurations, meaning that it can be used in low-side drivers or in high-side driver applications. Also, its electrical characteristics allow the switching of high frequencies of up to 3MHz. This is necessary to control applications with multiple switching times. The MMBD4448HCQW-7 is low on resistance, which means less heat is generated during the operations and also better performance and efficiency. Furthermore, it also features shunt diodes and ESD protection providing sufficient protection and reliability.

Benefits

MMBD4448HCQW-7 array has some unique properties that have made it an attractive choice for applications that require switching in the high-frequency range. It provides both low-side and high-side switching, allowing for fast operation. Also, its small form factor makes it easy to fit in a wide range of products. Its low on resistance is beneficial when high current switching is needed. Furthermore, due to its Q101 approved status, it is especially useful in automotive and other safety-critical applications.

Conclusion

MMBD4448HCQW-7 is an innovative array of four dual diode-connected Transistors package which provides both low-side and high-side switching in applications that require high-frequency current control. The device features low on resistance characteristics, ESD protection and a small form factor due to its Q101 approved status. It is an attractive choice for applications that require both high-frequency current operation and simplicity, as it combines the speed of MOSFETs with the simplicity of Bi-CMOS technology.

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