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