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Secondary Side Switch-Mode Power Supply Control Slide 14

This slide shows the SEA05, which features a short-proof pin-out. As can be seen, the Vcc range is 3.5 to 36 V and the Icc is 200 µA typical. The Vref precision, including input offset ranges from 2.488 to 2.512 V, is a very tight reference. It has a Vsense precision input offset of 46 to 54 mV for current sense and Voutlow of 400 mV at a maximum of 2 mA. A typical application schematic is shown on the slide, featuring the voltage divider for sensing the voltage, the shunt resistor for sensing the current. The internal IC block diagram, which includes a couple of op-amps and the internal voltage reference voltage, is shown as well.

PTM Published on: 2015-04-06