Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

NCP1028 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. NCP1028
Description  High−Voltage Switcher for Medium Power Offline SMPS Featuring Low Standby Power
Download  29 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo 

NCP1028 Datasheet(HTML) 2 Page - ON Semiconductor

 
Zoom Inzoom in Zoom Outzoom out
 2 / 29 page
background image
NCP1028
http://onsemi.com
2
85−265 VAC
+
BO
+
+
1
2
3
4
5
7
8
NCP1028
OPP*
+
Vout
GND
Figure 1. Typical Application
Ramp
Comp.*
*Optional component
PIN FUNCTION DESCRIPTION
Pin No.
Symbol
Function
Description
1
VCC
Powers the Internal
Circuitry
This pin is connected to an external capacitor of typically 22 mF.
2
Ramp Comp.
Ramp Compensation
in CCM
To extend the duty cycle operation in Continuous Conduction Mode (CCM),
pin 3 offers the ability to inject ramp compensation in the controller. If unused,
short this pin to VCC.
3
Brown−Out
Brown−Out and
Latchoff Input
By monitoring the bulk level via a resistive network, the circuit protects itself
from low mains conditions. If an external event brings this pin above 4.0 V,
the part fully latches off.
4
FB
Feedback Signal Input
By connecting an optocoupler to this pin, the peak current setpoint is adjusted
accordingly to the output power demand.
5
Drain
Drain Connection
The internal drain power switch circuit connection.
This unconnected pin ensures adequate creepage distance.
7
OPP
Over Power Protection
Driving this pin reduces the power supply capability in high line conditions. If
no Over Power Protection is needed, short this pin to ground.
8
GND
The IC Ground


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn