Datasheet

NCP1351
http://onsemi.com
2
Figure 1. Typical Application Circuit
1 8
2
3
4
7
6
5
85-265VAC
+
+
*OPP
NCP1351
+
LATCH
GND
V
OUT
*Optional
PIN FUNCTION DESCRIPTION
Pin N° Pin Name Function Pin Description
1 FB Feedback Input Injecting Current in this Pin Reduces Frequency
2 Ct Oscillator Frequency A capacitor sets the maximum switching frequency at no feedback current
3 CS Current Sense Input Senses the Primary Current
4 GND – –
5 DRV Driver Output Driving Pulses to the Power MOSFET
6 V
CC
Supply Input Supplies the controller up to 28 V
7 Latch Latchoff Input A positive voltage above V
LATCH
fully latches off the controller
8 Timer Fault Timer Capacitor Sets the time duration before fault validation
OVERCURRENT PROTECTION ON NCP1351 VERSIONS:
NCP1351 Auto-recovery Latched Dual level
A x
B x
C x x
D x x