NCP1236 Просмотр технического описания (PDF) - ON Semiconductor
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NCP1236 Datasheet PDF : 34 Pages
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NCP1236
TYPICAL APPLICATION EXAMPLE
VIN
(dc)
LATCH
FB
CS
GND
NCP1236
HV
VCC
DRV
VOUT
Figure 1. Flyback Converter Application Using the NCP1236
OPTIONS
Part
NCP1236
Option
A
A
B
B
C
C
D
D
Frequency
65 kHz
100 kHz
65 kHz
100 kHz
65 kHz
100 kHz
65 kHz
100 kHz
OCP Fault
Latched
Latched
Autorecovery
Autorecovery
Latched
Latched
Autorecovery
Autorecovery
Fault Timer
128 ms
128 ms
128 ms
128 ms
32 ms
32 ms
32 ms
32 ms
Autorecovery
Timer
1s
1s
1s
1s
1.5 s
1.5 s
1.5 s
1.5 s
PIN FUNCTION DESCRIPTION
Pin No Pin Name
Function
1
LATCH
Latch−Off Input
2
FB
3
CS
Feedback
Current Sense
4
GND
5
DRV
6
VCC
Drive output
VCC input
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.
This Input senses the Primary Current for current−mode operation, and Offers
an overpower compensation adjustment.
IC Ground
Drives external MOSFET
This supply pin accepts up to 28 Vdc, with overvoltage detection
8
HV
High−voltage pin
Connects to the bulk capacitor or the rectified AC line to perform the functions
of Start−up Current Source, Dynamic Self−Supply and brown−out detection
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