Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

NCP1234 Datasheet(PDF) 5 Page - ON Semiconductor

Part # NCP1234
Description  Fixed Frequency Current Mode Controller for Flyback Converters
Download  33 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1234 Datasheet(HTML) 5 Page - ON Semiconductor

  NCP1234 Datasheet HTML 1Page - ON Semiconductor NCP1234 Datasheet HTML 2Page - ON Semiconductor NCP1234 Datasheet HTML 3Page - ON Semiconductor NCP1234 Datasheet HTML 4Page - ON Semiconductor NCP1234 Datasheet HTML 5Page - ON Semiconductor NCP1234 Datasheet HTML 6Page - ON Semiconductor NCP1234 Datasheet HTML 7Page - ON Semiconductor NCP1234 Datasheet HTML 8Page - ON Semiconductor NCP1234 Datasheet HTML 9Page - ON Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 33 page
background image
NCP1234
http://onsemi.com
5
ELECTRICAL CHARACTERISTICS (For typical values TJ = 25C, for min/max values TJ = −40C to +125C, VHV = 125 V,
VCC = 11 V unless otherwise noted)
Characteristics
Test Condition
Symbol
Min
Typ
Max
Unit
HIGH VOLTAGE CURRENT SOURCE
Minimum voltage for current
source operation
VHV(min)
30
60
V
Current flowing out of VCC pin
VCC = 0 V
VCC = VCC(on) − 0.5 V
Istart1
Istart2
0.2
3
0.5
6
0.8
9
mA
Off−state leakage current
VHV = 500 V
Istart(off)
25
50
mA
SUPPLY
Turn−on threshold level, VCC
going up
HV current source stop threshold
VCC(on)
11.0
12.0
13.0
V
HV current source restart
threshold
VCC(min)
9.5
10.5
11.5
V
Turn−off threshold
VCC(off)
8.5
9.5
10.5
V
Overvoltage threshold
VCC(ovp)
25
26.5
28
V
Blanking duration on VCC(off) and
VCC(ovp) detection
tVCC(blank)
7
10
13
ms
VCC decreasing level at which
the internal logic resets
VCC(reset)
3.6
5.0
6.0
V
VCC level for ISTART1 to ISTART2
transition
VCC(inhibit)
0.4
1.0
1.6
V
Internal current consumption
(Note 6)
DRV open, VFB = 3 V, 65 kHz
DRV open, VFB = 3 V, 100 kHz
Cdrv = 1 nF, VFB = 3 V, 65 kHz
Cdrv = 1 nF, VFB = 3 V, 100 kHz
Off mode (skip or before start−up)
Fault mode (fault or latch)
ICC1
ICC1
ICC2
ICC2
ICC3
ICC4
1.2
1.3
1.9
2.2
0.67
0.4
1.8
1.9
2.5
2.9
0.9
0.7
2.2
2.3
3.2
3.6
1.13
1.0
mA
OSCILLATOR
Oscillator frequency
fOSC
60
92
65
100
70
108
kHz
Maximum duty cycle
DMAX
75
80
85
%
Frequency jittering amplitude, in
percentage of FOSC
Ajitter
4
6
8
%
Frequency jittering modulation
frequency
Fjitter
85
125
165
Hz
OUTPUT DRIVER
Rise time, 10% to 90 % of VCC
VCC = VCC(min) + 0.2 V, CDRV = 1 nF
trise
40
70
ns
Fall time, 90% to 10 % of VCC
VCC = VCC(min) + 0.2 V, CDRV = 1 nF
tfall
40
70
ns
Current capability
VCC = VCC(min) + 0.2 V, CDRV = 1 nF
DRV high, VDRV = 0 V
DRV low, VDRV = VCC
IDRV(source)
IDRV(sink)
500
500
mA
Clamping voltage (maximum
gate voltage)
VCC = VCCmax – 0.2 V, DRV high,
RDRV = 33 kW, Cload = 220 pF
VDRV(clamp)
11
13.5
16
V
High−state voltage drop
VCC = VCC(min) + 0.2 V, RDRV = 33 kW,
DRV high
VDRV(drop)
1
V
6. internal supply current only, current in FB pin not included (current flowing in GND pin only).


Similar Part No. - NCP1234

ManufacturerPart #DatasheetDescription
logo
ON Semiconductor
NCP1234 ONSEMI-NCP1234 Datasheet
231Kb / 33P
   Fixed Frequency Current Mode Controller for Flyback Converters
January, 2016 ??Rev. 2
NCP1234AD100R2G ONSEMI-NCP1234AD100R2G Datasheet
231Kb / 33P
   Fixed Frequency Current Mode Controller for Flyback Converters
January, 2016 ??Rev. 2
NCP1234AD65R2G ONSEMI-NCP1234AD65R2G Datasheet
231Kb / 33P
   Fixed Frequency Current Mode Controller for Flyback Converters
January, 2016 ??Rev. 2
NCP1234BD100R2G ONSEMI-NCP1234BD100R2G Datasheet
231Kb / 33P
   Fixed Frequency Current Mode Controller for Flyback Converters
January, 2016 ??Rev. 2
NCP1234BD65R2G ONSEMI-NCP1234BD65R2G Datasheet
231Kb / 33P
   Fixed Frequency Current Mode Controller for Flyback Converters
January, 2016 ??Rev. 2
More results

Similar Description - NCP1234

ManufacturerPart #DatasheetDescription
logo
ON Semiconductor
NCP1246 ONSEMI-NCP1246 Datasheet
1Mb / 38P
   Fixed Frequency Current Mode Controller for Flyback Converters
April, 2012 Rev. P0
NCP1246-D ONSEMI-NCP1246-D Datasheet
1Mb / 39P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2012 ??Rev. 1
NCP12400 ONSEMI-NCP12400 Datasheet
4Mb / 46P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2019 ??Rev. 5
NCP1236AD65R2G ONSEMI-NCP1236AD65R2G Datasheet
302Kb / 34P
   Fixed Frequency Current Mode Controller for Flyback Converters
April, 2013 ??Rev. 3
NCP1288 ONSEMI-NCP1288 Datasheet
274Kb / 32P
   Fixed Frequency Current Mode Controller for Flyback Converters
February, 2010 ??Rev. 1
NCP1236 ONSEMI-NCP1236 Datasheet
295Kb / 34P
   Fixed Frequency Current Mode Controller for Flyback Converters
January, 2012 ??Rev. 2
NCP1246 ONSEMI-NCP1246_V01 Datasheet
1Mb / 41P
   Fixed Frequency Current Mode Controller for Flyback Converters
March, 2017 - Rev. 7
NCP12401 ONSEMI-NCP12401 Datasheet
4Mb / 44P
   Fixed Frequency Current Mode Controller for Flyback Converters
July, 2020 ??Rev. 1
NCP12400 ONSEMI-NCP12400_V01 Datasheet
4Mb / 47P
   Fixed Frequency Current Mode Controller for Flyback Converters
February, 2022 - Rev. 8
NCP1246 ONSEMI-NCP1246_12 Datasheet
1Mb / 39P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2012 ??Rev. 1
More results


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 30 31 32 33


Datasheet Download

Go To PDF Page


Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com