LM2917M/NOPB

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The LM2917M/NOPB is a versatile and efficient pulse width modulation (PWM) Controller and Voltage-to-Frequency Converter from Texas Instruments. The controller offers three programmable frequencies, five output levels, and a built-in safety and protection circuitry that can provide added reliability and performance in tough operating conditions. The device is designed primarily for industrial applications, automotive applications, communications and networking, and other applications that require accurate control and timing.

The LM2917M/NOPB is a digital, four-pin PWM controller designed to control a variety of electrical loads including digital motors, AC and DC motors, battery charging circuits, and digital output controllers. Its single-channel output can be programmed to provide three different duty cycles (true PWM) or four different DC voltage levels (phase modulation) with a selectable base frequency. The device can operate from a supply voltage from 3 V to 32 V and draws very low quiescent current (1 µA) when operating, which makes it ideal for applications where power consumption needs to be minimized.

The LM2917M/NOPB also offers excellent frequency stability and step accuracy over temperature and environmental changes. Its base frequency range is adjustable between 1 kHz and 64 kHz, while its duty cycle range is adjustable between 0 and 99%. The device also has an adjustable dead time of 20 ns to 500 ns, allowing it to be programmed for optimal control of motors and other digital loads.

The LM2917M/NOPB is not only a PWM controller, but also a versatile Voltage-to-Frequency Converter (V/F). This feature allows it to be used for a wide range of analog to digital (A/D) converters, such as for processing input signals from temperature and pressure sensors. The device has an adjustable voltage input range from 0 V to 4.5 V, with an output frequency range from 1 kHz to 64 kHz. The converter also offers an improved voltage accuracy of 0.05 V, which allows it to provide highly accurate conversion of input signals.

The LM2917M/NOPB also offers efficient protection and safety features. It has an adjustable thermal shutdown feature that will shut off the output of the device when the temperature exceeds a certain threshold. The device also has an adjustable voltage protection feature that will shut off the output when the input voltage exceeds a certain threshold. These features ensure reliability in various operating environments and applications.

In summary, the LM2917M/NOPB is a high-performance and reliable Pulse Width Modulator (PWM) Controller and Voltage-to-Frequency Converter from Texas Instruments. It offers three programmable frequencies, five output levels, and useful safety and protection features. The device is suitable for a variety of industrial, automotive, communications and networking applications that require accurate timing and control. It is also a useful Voltage-to-Frequency Converter (V/F) for A/D converters, with an adjustable voltage input range and an improved voltage accuracy of 0.05 V.

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