NCP1200
ELECTRICAL CHARACTERISTICS
(For typical values T
J
= +25°C, for min/max values T
J
= −25°C to +125°C, Max T
J
= 150°C,
V
CC
= 11 V unless otherwise noted)
Rating
DYNAMIC SELF−SUPPLY
(All Frequency Versions, Otherwise Noted)
V
CC
Increasing Level at Which the Current Source Turns−off
V
CC
Decreasing Level at Which the Current Source Turns−on
V
CC
Decreasing Level at Which the Latchoff Phase Ends
Internal IC Consumption, No Output Load on Pin 5
Internal IC Consumption, 1 nF Output Load on Pin 5, F
SW
= 40 kHz
Internal IC Consumption, 1 nF Output Load on Pin 5, F
SW
= 60 kHz
Internal IC Consumption, 1 nF Output Load on Pin 5, F
SW
= 100 kHz
Internal IC Consumption, Latchoff Phase
INTERNAL CURRENT SOURCE
High−voltage Current Source, V
CC
= 10 V
High−voltage Current Source, V
CC
= 0 V
DRIVE OUTPUT
Output Voltage Rise−time @ CL = 1 nF, 10−90% of Output Signal
Output Voltage Fall−time @ CL = 1 nF, 10−90% of Output Signal
Source Resistance (drive = 0, Vgate = V
CCHMAX
− 1 V)
Sink Resistance (drive = 11 V, Vgate = 1 V)
CURRENT COMPARATOR
(Pin 5 Un−loaded)
Input Bias Current @ 1 V Input Level on Pin 3
Maximum internal Current Setpoint
Default Internal Current Setpoint for Skip Cycle Operation
Propagation Delay from Current Detection to Gate OFF State
Leading Edge Blanking Duration
INTERNAL OSCILLATOR
(V
CC
= 11 V, Pin 5 Loaded by 1 kW)
Oscillation Frequency, 40 kHz Version
Oscillation Frequency, 60 kHz Version
Oscillation Frequency, 100 kHz Version
Built−in Frequency Jittering, F
SW
= 40 kHz
Built−in Frequency Jittering, F
SW
= 60 kHz
Built−in Frequency Jittering, F
SW
= 100 kHz
Maximum Duty Cycle
FEEDBACK SECTION
(V
CC
= 11 V, Pin 5 Loaded by 1 kW)
Internal Pullup Resistor
Pin 3 to Current Setpoint Division Ratio
SKIP CYCLE GENERATION
Default skip mode level
Pin 1 internal output impedance
1. Max value @ T
J
= −25°C.
2. Max value @ T
J
= 25°C, please see characterization curves.
1
1
Vskip
Zout
1.1
−
1.4
25
1.6
−
V
kW
2
−
Rup
Iratio
−
−
8.0
4.0
−
−
kW
−
−
−
−
−
−
−
−
f
OSC
f
OSC
f
OSC
f
jitter
f
jitter
f
jitter
Dmax
36
52
86
−
−
−
74
42
61
103
300
450
620
80
48
70
116
−
−
−
87
kHz
kHz
kHz
Hz/V
Hz/V
Hz/V
%
3
3
3
3
3
I
IB
I
Limit
I
Lskip
T
DEL
T
LEB
−
0.8
−
−
−
0.02
0.9
350
100
230
−
1.0
−
160
−
mA
V
mV
ns
ns
5
5
5
5
T
r
T
f
R
OH
R
OL
−
−
27
5
67
28
40
12
−
−
61
25
ns
ns
W
W
8
8
I
C1
I
C2
2.8
−
4.0
4.9
−
−
mA
mA
6
6
6
6
6
6
6
6
V
CCOFF
V
CCON
V
CClatch
I
CC1
I
CC2
I
CC2
I
CC2
I
CC3
10.3
8.8
−
−
−
−
−
−
11.4
9.8
6.3
710
1.2
1.4
1.9
350
12.5
11
−
880
Note 1
1.4
Note 2
1.6
Note 2
2.2
Note 2
−
V
V
V
mA
mA
mA
mA
mA
Pin
Symbol
Min
Typ
Max
Unit
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