A3906SES-T

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Motor Type - Stepper:	Bipolar
Motor Type - AC, DC:	Brushed DC
Function:	Driver - Fully Integrated, Control and Power Stage
Output Configuration:	Half Bridge (4)
Interface:	Parallel
Technology:	DMOS
Step Resolution:	1, 1/2
Applications:	Battery Powered
Current - Output:	1A
Voltage - Supply:	2.5 V ~ 9 V
Voltage - Load:	2.5 V ~ 9 V
Operating Temperature:	-20°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	20-WFQFN Exposed Pad
Supplier Device Package:	20-QFN (4x4)
Base Part Number:	A3906

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A3906SES-T Motor Driver

The A3906SES-T is a full-bridge motor driver IC designed to drive small DC motors in a variety of applications. It is designed to manage the power requirements of small DC motors and is commonly used in motor control circuits. It is suitable for controlling the rotational speed, direction and torque of motors in a cost-efficient and reliable way.

A3906SES-T Application Field

As a bridge motor driver IC, the A3906SES-T is typically used for low-voltage, low-current applications. It is commonly used for driving small DC motors, such as those found in automotive applications, robotics and HVAC systems. It is suitable for controlling the rotational speed, direction and torque of small DC motors up to 1.5 A. It is also suitable for use in applications such as printer motors, control mechanisms, actuators, pumps and fans.

A3906SES-T Working Principle

At a high level, the A3906SES-T uses a pair of H-bridge circuits to drive small DC motors. In an H-bridge circuit, two transistors are used to control the direction of current flow, while two additional transistors serve as switches to start and stop the motor. The A3906SES-T provides protection against overcurrent, thermal shutdown, output short-circuit and flyback voltage protection. The A3906SES-T also contains a number of features that make it a very versatile motor driver IC. It has adjustable slew rates, allowing for different speeds, as well as automatic current limit protection which helps to improve efficiency and reduce power consumption. It also supports a sleep and wake-up mode, which allows the motor to be driven when needed and then put into a low-power mode when not in use. The A3906SES-T uses a logic input to control the direction of current flow in the H-bridge circuit. This input can be controlled via a microcontroller or other processor, allowing for the convenient control of the motor’s speed, direction and torque. Additionally, the A3906SES-T has adjustable current limit protection, enabling it to effectively manage the current requirements of the motor. The A3906SES-T also makes use of a special ‘slow decay mode’, which keeps the motor running at a constant speed while gradually reducing it over time. This helps to reduce motor noise, as well as to improve battery life and reduce wear and tear on the motor components.

Conclusion

The A3906SES-T is a versatile, low-cost motor driver IC designed for use in a variety of applications. It is suitable for driving small DC motors up to 1.5A in automotive, robotics, HVAC and other applications. The A3906SES-T supports a wide range of features such as adjustable speed, direction and torque control, sleep mode, current limit protection and slow decay mode. It is a robust, flexible and cost-effective driver IC suitable for a variety of motor control applications.

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