AUIRS21844S

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The AUIRS21844S gate driver integrated circuit is a power management integrated circuit (PMIC) belonging to the category of gate drivers. It is a two-channel gate driver designed to control two N-channel MOSFETs operating at higher voltage levels than the PMIC\'s power supply voltage. This device is key in many applications, from automotive systems, consumer electronics, displays and LED lighting, to industrial motor control systems.

The AUIRS21844S is a high-performance, low quiescent current, low-side MOSFET driver. It can control two separate N-channel MOSFETs, providing high drive currents and full independent control over each MOSFET. This device is compatible with 3.3-V and 5-V logic, and it can handle gate voltages up to 18 V. It also has an active pulldown device that keeps PWM signals from essentially idling during sleep mode. The AUIRS21844S is able to support gate drives up to 10 amps, with typical rise and fall times from 8 ns to 16 ns, and it is available in a small 5 mm x 5 mm, 28-pin QFN package for convenient and easy integration into new or existing designs.

The AUIRS21844S works based on a simple principle. When a logic-level input is applied, the device turns on one of the MOSFET channels using a regulated voltage source. The output voltage is regulated by an onboard linear regulator and can be set to any voltages within the supply voltage range. When the logic-level input is removed, the MOSFET is switched off. The unipolar performance of the AUIRS21844S makes it ideal for applications such as automotive, motor control, and power conversion.

The AUIRS21844S can be used in a variety of applications, including high-voltage motor control, power supply switching, and automotive systems. It can be used in automotive applications such as HID lighting, engine controls, and even in modern electric vehicles. In industrial motor control systems, the AUIRS21844S can be used to control MOSFETs used in bidirectional motor drivers and for other switching control needs. It can also be used in power supply front-end circuits and DC/DC converters for precise voltage regulation.

The AUIRS21844S is versatile, capable of driving both high-side and low-side MOSFETs, as well as providing over-temperature protection and shutdown features. With its wide VCC operating range, fast switching speeds, and low quiescent current, the AUIRS21844S is an ideal choice for many automotive and industrial gate driving applications.

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