NJM3775D2

Package / Case:	22-DIP (0.400", 10.16mm)
Supplier Device Package:	22-DIP
Series:	--
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Motor Type - Stepper:	Bipolar
Motor Type - AC, DC:	--
Function:	Driver - Fully Integrated, Control and Power Stage
Output Configuration:	Half Bridge (4)
Interface:	Parallel
Technology:	Bipolar
Step Resolution:	1, 1/2
Applications:	General Purpose
Current - Output:	750mA
Voltage - Supply:	4.75 V ~ 5.25 V
Voltage - Load:	10 V ~ 40 V
Operating Temperature:	-20°C ~ 125°C (TJ)
Mounting Type:	Through Hole

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NJM3775D2 Application Field and Working Principle

NJM3775D2 is a single-chip motor driving power management integrated circuit (PMIC). It is designed for use in 24V motor control systems, such as automotive, domestic appliances, and other industrial equipment. It has a wide range of applications, which include:

Motor Control Systems

NJM3775D2 can provide power to various types of motors, from DC to brushless, from small to large. With a wide power range of 5V to 24V, it supports a wide range of motors, including AC and DC brushless, stepper, and step-down motors. It uses pulse-width modulation (PWM) to control the motor speed, which eliminates the need for bulky and expensive speed controllers. It also supports over-current and over-voltage protection, ensuring safe and reliable operation of the motor.

Power Management

NJM3775D2 allows the motor to be driven with or without an external power supply. It can provide up to 4A output current and can be used to drive motors directly. The overall power management of the system is improved due to the integrated voltage level shifters and programmable current limiters. The integrated low-dropout regulator (LDO) supports an output current of up to 900mA, which makes NJM3775D2 suitable for powering small and portable devices.

Working Principle

NJM3775D2 uses a combination of its integrated low-pass filter and PWM control to reduce noise and improve the overall efficiency of the system. Its integrated voltage level shifter allows the voltage from the power supply to be converted to the needed levels for the application. The integrated current limiters and integrated drivers help to control the motor speed and torque.The integrated low-pass filter reduces the unwanted electrical noise generated by the motor during operation, providing an overall smoother operation. The integrated PWM control allows the motor to be driven at a desired speed. The voltage level shifter is used to convert the power supply voltage to the needed levels for the application. The current limiters and drivers help to provide accurate control over the motor speed and torque.

Conclusion

NJM3775D2 is a power management integrated circuit designed for 24V motor control systems. It has a wide power range of 5V to 24V, suitable for a variety of motor types, including AC, DC, brushless, stepper, and step-down motors. It provides excellent power management, with the integrated voltage level shifters, current limiters, and drivers. Its integrated low-pass filter and pulse-width modulation (PWM) reduce electrical noise and improve the overall system efficiency.

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