LM431ACZXA
On Semiconductor
The LM431ACZXA from On Semiconductor is an adjustable shunt voltage reference. It offers a wide output voltage range and is suitable for various power management applications.
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The NTE1720 is a Pulse Width Modulator (PWM) Regulator IC manufactured by NTE Electronics. This component is designed for voltage regulation applications.
Key electrical features include an internal 5V regulator that supplies power to internal circuitry and can provide up to 50mA for external use. The device incorporates output transistors with an internal current limiting feature of approximately 100mA. An error amplifier provides significant gain, around 80dB, and is suitable for loop frequency compensation or electronic shutdown.
The internal oscillator circuitry sets the switching regulator's operating frequency, which can be influenced by external timing resistors and capacitors. The oscillator output can also accept an external clock signal for synchronous operation. The NTE1720 includes a shutdown pin for disabling the regulator.
This component is suitable for various voltage regulation designs requiring PWM control. Its through-hole mounting type suggests integration into breadboard or perfboard circuits.
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Estimated market price range - modelled values for guidance only, not live distributor offers.
The internal regulator provides 5V output.
The error amplifier typically provides 80dB of gain.
The oscillator period is approximately RC for R between 1.8kΩ and 100kΩ and C between 0.001µF and 0.1µF.
The output transistors have a typical current limit of 100mA.
Current limiting is activated when the voltage between pin4 and pin5 exceeds 200mV.
Yes, by applying a 3V clock pulse to pin3, which has an impedance of 2kΩ to ground.
