NCP1351 ON Semiconductor, NCP1351 Datasheet - Page 2

• Manufacturer Part Number: NCP1351
• Description: Variable Off Time Controller Featuring Short-circuit Protection
• Manufacturer: ON Semiconductor

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