参数资料
型号: NCP1246AD100R2G
厂商: ON Semiconductor
文件页数: 2/39页
文件大小: 0K
描述: IC CTLR CURR MODE 100KHZ 8SOIC
标准包装: 2,500
系列: *
NCP1246
TYPICAL APPLICATION EXAMPLE
Figure 1. Flyback Converter Application Using the NCP1246
PIN FUNCTION DESCRIPTION
Pin No
1
2
3
4
5
6
8
Pin Name
LATCH
FB
CS
GND
DRV
VCC
HV
Function
Latch ? Off Input
Feedback + Shutdown pin
Current Sense
?
Drive output
VCC input
High ? voltage pin
Pin Description
Pull the pin up or down to latch ? off the controller. An internal current source
allows the direct connection of an NTC for over temperature detection.
An optocoupler collector to ground controls the output regulation. The part
goes to the low consumption Off mode if the FB input pin is pulled to GND.
This Input senses the Primary Current for current ? mode operation, and
offers an overpower compensation adjustment.
The controller ground
Drives external MOSFET
This supply pin accepts up to 28 Vdc, with overvoltage detection. The pin is
connected to an external auxiliary voltage. It is not allowed to connect
another circuit to this pin to keep low input power consumption.
Connects to the rectified AC line to perform the functions of Start ? up
Current Source, Self ? Supply, brown ? out detection and X2 capacitor
discharge function and the HV sensing for the overpower protection
purposes. It is not allowed to connect this pin to DC voltage.
http://onsemi.com
2
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