Datasheet

NCL30081
http://onsemi.com
2
Figure 1. Typical Application Schematic for NCL30081
Aux
1
2
34
5
6
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.
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Table 1. PIN FUNCTION DESCRIPTION
Pin No Pin Name Function Pin Description
1 ZCD Zero Crossing Detection Connected to the auxiliary winding, this pin detects the core reset event.
2 GND − The controller ground
3 CS Current sense This pin monitors the primary peak current
4 DRV Driver output The current capability of the totem pole gate drive (+0.3/−0.5 A) makes it suit-
able to effectively drive a broad range of power MOSFETs.
5 VCC Supplies the controller This pin is connected to an external auxiliary voltage.
6 VIN Input voltage sensing
Brown−Out
This pin observes the HV rail and is used in valley selection. This pin also
monitors and protects for low mains conditions.