MIC5018BM4 TR

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PMIC - Gate Drivers

The MIC5018BM4 TR gate driver (hereinafter referred to as MIC5018) is an integrated power management IC (PMIC) designed for multiple applications.

When used in conjunction with a triode gate driver and a gate pull-down resistor, MIC5018 offers a low-voltage interface for driving power transistors. The voltage threshold of the input is adjustable to accommodate the various drive requirements. Due to the low-voltage drive capability, MIC5018 can be used to control switching devices in a wide range of applications, including automotive electrical systems.

Application Field

There are numerous application fields of MIC5018. It can be used to control switching devices in industrial, automotive and consumer applications, including:

• Automotive lighting systems, such as headlights, fog lights, interior lights and brake lights
• DC/DC converters
• Switching power supplies
• Servo motor control systems
• Battery management systems
• Power tool control systems

Working Principle

The MIC5018BM4 TR gate driver is designed to drive high-power transistors in a variety of applications. The IC features a three-pin, 5V single-channel, open-drain output with a maximum output current of 500mA. The IC offers an input voltage threshold of 1.5V and a drive voltage of 0.3V, allowing it to be used in a variety of different applications.

The input of the IC is connected to a logic signal, such as a digital signal. When the logic signal is an active high logic signal (i.e., a voltage higher than 1.5 V), the output of the IC is pulled high, turning on the power transistor to allow it to pass a current in the desired direction. When the logic signal is an inactive low logic signal (i.e., a voltage lower than 1.5 V) the output of the IC will be pulled low, preventing the power transistor from passing a current.

In addition to the basic logic signal control, the MIC5018BM4 TR gate driver also features an adjustable turn-on and turn-off delay. The turn-on delay is adjusted by programming a precision capacitor, and the turn-off delay is adjusted by a trimmer potentiometer. This gives the user the ability to adjust the timing of the controlled transistor’s switching cycle as desired.

The MIC5018BM4 TR gate driver is also capable of protecting itself and the controlled power transistor from over-voltage and over-current conditions. The IC is protected from ESD and other similar electrical transients through internal ESD protection circuitry. The output of the IC is limited to 500mA, which makes it ideal for driving power transistors.

Finally, the MIC5018BM4 TR gate driver also offers various other features such as low power consumption, thermal shutdown protection, and reverse battery protection. In addition, the IC is capable of operating in temperatures as low as -40C and as high as 150C, making it ideal for extreme environment applications.

In conclusion, the MIC5018BM4 TR gate driver is an integrated power management IC designed for driving power transistors in a variety of applications. The IC offers an adjustable drive voltage, adjustable turn-on and turn-off delay, and other features such as low power consumption, thermal shutdown protection, and ESD protection. This makes it an ideal IC for driving power transistors in a variety of application fields, including automotive lighting systems, DC/DC converters, switching power supplies, servo motor control systems, and battery management systems.

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