The SA60 and LMD18245 are both full-bridge power output circuits for small to medium-sized DC motors, developed by Apex and NS respectively. Both chips feature minimal external component requirements while offering power drive, control, and protection capabilities. However, they each possess unique characteristics that make them suited to different applications. Below is an overview of their pin configurations, functional features, and typical use cases.
Main Performance Parameters and Characteristics:
SA60 Performance Parameters and Application Scope:
The SA60 is a PWM-type power output chip capable of supplying a maximum voltage of 80V to the motor, with a continuous current capacity of 10A. It supports an analog input voltage up to 5V, a PWM carrier frequency of up to 250kHz, and an efficiency of up to 97%. It can also synchronize with compatible TTL-type PWM signals for four-quadrant operation. The SA60 is commonly used in driving small to medium-sized DC motors, Class D power amplifiers, and bearing excitation systems.
LMD18245 Performance Parameters and Application Scope:
The LMD18245 chip provides a maximum motor supply voltage of 55V, a logic circuit voltage of 12V, a continuous current output of 3A, and a peak current of 6A. Its minimum input pulse width is 2μS, and the current sensor has a maximum linearity error of ±9%. Similar to the SA60, this power output stage is highly efficient. With its integrated four-bit D/A converter, motor current sensor, and a chopper amplifier with a fixed cutoff time, the LMD18245 can easily perform digital motor current control and achieve microstep drives for stepper motors. Thus, it is primarily used in controlling and driving small DC motors, particularly stepper motors.
Pins and Functional Shapes:
The outline packages of SA60 and LMD18245 are illustrated in Figure 1 below.
In summary, these two chips represent significant advancements in motor control technology, offering engineers versatile options depending on their specific needs. Whether you're working on a project involving small DC motors or more complex stepper motor applications, both SA60 and LMD18245 provide robust solutions with minimal design complexity.
Feel free to reach out if you need further assistance or detailed specifications about any of these products. We're here to help you find the perfect fit for your projects!
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