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NCP1236 Datasheet(PDF) 5 Page - ON Semiconductor

Part # NCP1236
Description  Fixed Frequency Current Mode Controller
Download  34 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1236 Datasheet(HTML) 5 Page - ON Semiconductor

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NCP1236
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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
40
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 (Note 7)
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
1.2
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
BROWN−OUT
Brown−Out thresholds
VHV going up
VHV going down
VHV(start)
VHV(stop)
92
79
107
92
122
105
V
Timer duration for line cycle
drop−out
tHV
47
68
90
ms
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 k
W, Cload = 220 pF
VDRV(clamp)
11
13.5
16
V
6. Internal supply current only, current in FB pin not included (current flowing in GND pin only).
7. Guaranteed by design.


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