UPC1237 DATASHEET PDF

No Preview Available! In both overload detection and output offset detection, either function can be selected. Both positive and negative output offset can be detected through pin2. The time delay form amplifier power ON to relay ON can be freely set by selecting external components. Absolute maximum ratings are stress ratings only and functional device operation is not implied. PDF ] Liens de partage.

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NEC UPC1237

UPC Speaker protection board: Current requirements. My question regards how much current is required to drive the board. I've had a good look at the datasheet but I can't identify anything that looks like current requirements. Allmost all current is for the relais, the IC needs very little. The coil data says 77mA, so for two mA.

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Datasheet «UPC1237»

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UPC1237 View Datasheet(PDF) - Unisonic Technologies

Almost any Sony amplifier starting from the lower range and right up to the higher-end ES series are using this chip. So I thought was a good idea to make a stand alone module which could be used by the DIY community. One important aspect is that this IC could be used to prevent the output devices from over current. Most power amplifiers have a dedicated circuit built in them, to monitor the current flow trough the power transistors. This part of the schematic is forcing the current to stay within the recommended SOA of the devices. Using uPC for over current protection allows the designer to drop the SOA limiting elements in the power amplifier. This will save space on the PCB, lower the cost of the project and increase the reliability.

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