NCP1217, NCP1217A
www.onsemi.com
4
ELECTRICAL CHARACTERISTICS (For typical values T
J
= 25°C, for min/max values T
J
= 0°C to +125°C, Max T
J
= 150°C,
V
CC
= 11 V unless otherwise noted.)
Characteristic Pin Symbol Min Typ Max Unit
SUPPLY SECTION (All frequency versions, unless otherwise noted)
Turn−On Threshold Level, V
CC
Going Up 6 VCC
ON
11.8 12.8 13.8 V
Minimum Operating Voltage After Turn−On 6 VCC
min
6.9 7.6 8.3 V
V
CC
Decreasing Level at which the Latchoff Phase Ends 6 VCC
latch
− 5.6 − V
Internal IC Consumption, No Output Load on Pin 5,
F
SW
= 65 kHz
6 ICC1 − 960 1110
(Note 1)
A
Internal IC Consumption, No Output Load on Pin 5,
F
SW
= 100 kHz
6 ICC1 − 1020 1180
(Note 1)
A
Internal IC Consumption, No Output Load on Pin 5,
F
SW
= 133 kHz
6 ICC1 − 1060 1200
(Note 1)
A
Internal IC Consumption, 1.0 nF Output Load on Pin 5,
F
SW
= 65 kHz
6 ICC2 − 1.7 2.0
(Note 1)
mA
Internal IC Consumption, 1.0 nF Output Load on Pin 5,
F
SW
= 100 kHz
6 ICC2 − 2.1 2.4
(Note 1)
mA
Internal IC Consumption, 1.0 nF Output Load on Pin 5,
F
SW
= 133 kHz
6 ICC2 − 2.4 2.9
(Note 1)
mA
Internal IC Consumption, Latchoff Phase, V
CC
= 6.0 V 6 ICC3 − 230 −
A
INTERNAL STARTUP CURRENT SOURCE (T
J
u 0°C)
High−Voltage Current Source, V
CC
= 10 V 8 IC1 3.5
(Note 2)
6.0 7.8 mA
High−Voltage Current Source, V
CC
= 0 8 IC2 − 7.0 − mA
DRIVE OUTPUT
Output Voltage Rise−Time @ CL = 1.0 nF, 10−90% of a 12 V
Output Signal
5 T
r
− 60 − ns
Output Voltage Fall−Time @ CL = 1.0 nF, 10−90% of a 12 V
Output Signal
5 T
f
− 20 − ns
Source Resistance 5 R
OH
15 20 35
Sink Resistance 5 R
OL
5.0 10 18
CURRENT COMPARATOR (Pin 5 Unloaded)
Input Bias Current @ 1.0 V Input Level on Pin 3
3 I
IB
− 0.02 −
A
Maximum Internal Current Setpoint 3 I
Limit
0.9 1.0 1.1 V
Default Internal Current Setpoint for Skip Cycle Operation 3 I
Lskip
− 330 − mV
Propagation Delay from Current Detection to Gate OFF State 3 T
DEL
− 90 150 ns
Leading Edge Blanking Duration 3 T
LEB
− 250 − ns
INTERNAL OSCILLATOR (V
CC
= 11 V, Pin 5 Loaded by 1.0 k)
Oscillation Frequency, 65 kHz Version − f
OSC
58.5 65 71.5 kHz
Oscillation Frequency, 100 kHz Version − f
OSC
90 100 110 kHz
Oscillation Frequency, 133 kHz Version − f
OSC
120 133 146 kHz
Maximum Duty−Cycle, NCP1217 − Dmax 69 74 80 %
Maximum Duty−Cycle, NCP1217A − Dmax 42 46.5 50 %
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. Maximum Value @ T
J
= 0°C.
2. Minimum Value @ T
J
= 125°C.
