NCP1200
www.onsemi.com
4
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 Pin Symbol Min Typ Max Unit
DYNAMIC SELF−SUPPLY (All Frequency Versions, Otherwise Noted)
V
CC
Increasing Level at Which the Current Source Turns−off 6 V
CCOFF
10.3 11.4 12.5 V
V
CC
Decreasing Level at Which the Current Source Turns−on 6 V
CCON
8.8 9.8 11 V
V
CC
Decreasing Level at Which the Latchoff Phase Ends 6 V
CClatch
− 6.3 − V
Internal IC Consumption, No Output Load on Pin 5 6 I
CC1
− 710 880
Note 1
mA
Internal IC Consumption, 1 nF Output Load on Pin 5, F
SW
= 40 kHz 6 I
CC2
− 1.2 1.4
Note 2
mA
Internal IC Consumption, 1 nF Output Load on Pin 5, F
SW
= 60 kHz 6 I
CC2
− 1.4 1.6
Note 2
mA
Internal IC Consumption, 1 nF Output Load on Pin 5, F
SW
= 100 kHz 6 I
CC2
− 1.9 2.2
Note 2
mA
Internal IC Consumption, Latchoff Phase 6 I
CC3
− 350 −
mA
INTERNAL CURRENT SOURCE
High−voltage Current Source, V
CC
= 10 V 8 I
C1
2.8 4.0 − mA
High−voltage Current Source, V
CC
= 0 V 8 I
C2
− 4.9 − mA
DRIVE OUTPUT
Output Voltage Rise−time @ CL = 1 nF, 10−90% of Output Signal
5 T
r
− 67 − ns
Output Voltage Fall−time @ CL = 1 nF, 10−90% of Output Signal 5 T
f
− 28 − ns
Source Resistance (drive = 0, Vgate = V
CCHMAX
− 1 V) 5 R
OH
27 40 61
W
Sink Resistance (drive = 11 V, Vgate = 1 V) 5 R
OL
5 12 25
W
CURRENT COMPARATOR (Pin 5 Un−loaded)
Input Bias Current @ 1 V Input Level on Pin 3
3 I
IB
− 0.02 −
mA
Maximum internal Current Setpoint 3 I
Limit
0.8 0.9 1.0 V
Default Internal Current Setpoint for Skip Cycle Operation 3 I
Lskip
− 350 − mV
Propagation Delay from Current Detection to Gate OFF State 3 T
DEL
− 100 160 ns
Leading Edge Blanking Duration 3 T
LEB
− 230 − ns
INTERNAL OSCILLATOR (V
CC
= 11 V, Pin 5 Loaded by 1 kW)
Oscillation Frequency, 40 kHz Version
− f
OSC
36 42 48 kHz
Oscillation Frequency, 60 kHz Version − f
OSC
52 61 70 kHz
Oscillation Frequency, 100 kHz Version − f
OSC
86 103 116 kHz
Built−in Frequency Jittering, F
SW
= 40 kHz − f
jitter
− 300 − Hz/V
Built−in Frequency Jittering, F
SW
= 60 kHz − f
jitter
− 450 − Hz/V
Built−in Frequency Jittering, F
SW
= 100 kHz − f
jitter
− 620 − Hz/V
Maximum Duty Cycle − Dmax 74 80 87 %
FEEDBACK SECTION (V
CC
= 11 V, Pin 5 Loaded by 1 kW)
Internal Pullup Resistor
2 Rup − 8.0 −
kW
Pin 3 to Current Setpoint Division Ratio − Iratio − 4.0 − −
SKIP CYCLE GENERATION
Default skip mode level
1 Vskip 1.1 1.4 1.6 V
Pin 1 internal output impedance 1 Zout − 25 −
kW
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
1. Max value @ T
J
= −25°C.
2. Max value @ T
J
= 25°C, please see characterization curves.
