NCP1379DR2G ON Semiconductor, NCP1379DR2G Datasheet - Page 2

• Manufacturer Part Number: NCP1379DR2G
• Description: IC CTLR QUASI CURRENT MODE 8SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1379DR2G

• Output Isolation: Isolated
• Voltage - Input: 9 ~ 28 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Duty Cycle (max): 6.7 %
• Mounting Style: SMD/SMT
• Switching Frequency: 65 KHz
• Operating Supply Voltage: 8.3 V to 12.3 V
• Supply Current: 1.7 mA
• Maximum Operating Temperature: + 125 C
• Fall Time: 25 ns
• Minimum Operating Temperature: - 40 C
• Rise Time: 40 ns
• Synchronous Pin: No
• Topology: Quasi-Resonant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN FUNCTION DESCRIPTION
Pin N5
1
2
3
4
5
6
7
8
Pin Name
GND
Fault
ZCD
DRV
V
FB
CS
C
CC
T
ZCD / OPP
Adjust the over power protection
Zero Crossing Detection
Overvoltage protection
Supplies the controller
1
2
3
4
Timing capacitor
HV −bulk
Current sense
Feedback pin
NCP 1 3 7 9
Driver output
Brown−out
Function
Figure 1. Typical Application Schematic
TYPICAL APPLICATION EXAMPLE
−
8
7
6
5
http://onsemi.com
Connected to the auxiliary winding, this pin detects the core reset
event.
Also, injecting a negative voltage smaller than 0.3 V on this pin will
perform over power protection.
Hooking an optocoupler collector to this pin will allow regulation.
This pin monitors the primary peak.
The controller ground
The driver’s output to an external MOSFET
This pin is connected to an external auxiliary voltage.
This pin observes the HV rail and protects the circuit in case of low
main conditions. It also offers a way to latch the circuit in case of over
voltage event.
A capacitor connected to this pin acts as the timing capacitor in fold-
back mode.
2
VCC
.
.
Pin Description
.
GND
GND
Vout