A3907ECGTR Integrated Circuits (ICs)

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A3907ECGTR is a low-cost motor driver with integrated control panel and protection bits in an 8-pin power HTSSOP package. It can efficiently operate various kinds of permanent magnet DC motors, including small-sized ones. It is suitable for projects that require low current consumption and low system cost. This device is part of PMIC (Power Management Integrated Circuit) - Motor Drivers, Controllers family.

Features

A3907ECGTR offers the following features:

• Low operating current (6 mA)
• Wide operating voltage range (2.7V to 15V)
• Two selectable frequencies (450 kHz and 900 kHz)
• Precise control over current and speed
• Over current and over voltage protection
• Over temperature protection

Applications

A3907ECGTR is suitable for applications such as door lock actuators, electric tools and vacuum cleaners. It can also be used in home appliance and industrial product control systems as well as medical products such as ventilators.

Working Principle

A3907ECGTR uses a synchronous buck topology to draw current from the power supply and produce a regulated voltage to feed the motor. The regulated voltage is then regulated with a closed loop current control, wherein the current is sensed through the drain of the external MOSFET. The sensed current is then compared with a reference current, and based on the result, the output voltage of the controller is adjusted to keep the current within the specified limit.

The device also incorporates multiple protection features such as over current protection, over voltage protection, and over temperature protection. This helps to ensure that it can operate safely over a wide range of load and ambient temperature conditions.

A3907ECGTR is a flexible and efficient motor driver solution that is suitable for a wide range of applications. Its integrated control and protection features make it an ideal choice for projects requiring low system cost and minimal external components.

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