SC4431: Shunt Regulator With Open Collector Or Output | Semtech

The SC4431 is a four terminal device for regulating an isolated power supply with output voltages down to 1.5V. It is intended to be used as a replacement for three terminal Shunt Regulators such as SC431L where the output voltage is too low for the device to function in conjunction with an opto-isolator. SC4431 achieves this by having seperate supply and output pins, allowing the output to sink current at voltages as low as 0.1V, while the supply pin still has sufficient voltage for the device to function. In this way, allowing for a 1.4V drop through an opto-isolator Diode regulation down to 1.5V out CAN be achieved. By Semtech Corporation
SC4431 's PackagesSC4431 's pdf datasheet
SC4431CSK-.5-TR
SC4431CSK-.5TRT
SC4431CSK-1-TR
SC4431CSK-1-TRT
SC4431CSK-2-TR
SC4431CSK-2TRT




SC4431 Pinout, Pinouts
SC4431 pinout,Pin out
This is one package pinout of SC4431,If you need more pinouts please download SC4431's pdf datasheet.

SC4431 Application circuits
SC4431 circuits
This is one application circuit of SC4431,If you need more circuits,please download SC4431's pdf datasheet.


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SC4431 Application Notes SC4431 RoHS SC4431 Circuits SC4431 footprint