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ELECTRICAL CHARACTERISTICS
otherwise noted.)
VOLTAGE FEEDBACK
Offset Voltage
Maximum CT Pin Voltage at FB Current = 25 mA (Including V
Maximum CT Pin Voltage at FB Current = 50 mA (Including V
CT PIN − OFF TIME CONTROL
Source Current (CT Pin Grounded)
Source Current Maximum Voltage Capability
Minimum CT Pin Voltage (Pin Unloaded, Discharge Switch Turned On)
CURRENT SENSE
Minimum Source Current (I
FB
Maximum Source Current (I
FB
Comparator Threshold Voltage
Propagation Delay (CS Falling Edge to Gate Output)
GATE DRIVE
Sink Resistance (I
= 30 mA)
sink
Source Resistance (I
= 30 mA)
source
POWER SUPPLY
V
Startup Voltage
CC
Undervoltage Lockout Threshold Voltage
Hysteresis (V
− V
)
startup
UVLO
V
Startup Current Consumption (V
CC
V
Steady State Current Consumption
CC
(C
= 1.0 nF, f
= 100 kHz, FB open)
GATE
SW
(V
= 12 V, for typical values T
CC
Characteristic
= 180 mA, CT Pin Grounded)
= 0 mA, CT Pin Grounded)
= 8.0 V)
CC
http://onsemi.com
NCP1215
= 25°C, for min/max values T
j
Symbol
V
offset
)
V
offset
CT−25mA
)
V
offset
CT−50mA
I
CT
V
CT−max
V
CT−min
I
CS−min
I
CS−max
V
th
t
delay
R
OL
R
OH
V
startup
V
UVLO
V
hys
I
CC−start
I
CC−SW
4
= 0°C to +105°C, unless
j
Min
Typ
Max
Unit
1.05
1.19
1.34
2.4
3.1
4.3
3.6
4.6
6.2
8.0
9.8
11.5
−
6.5
−
−
−
20
8.0
12.5
16
40
49
58
15
42
80
−
215
310
25
40
90
60
80
130
−
12.5
14.2
7.2
9.0
−
2.2
3.5
−
−
2.8
6.5
0.55
0.9
1.75
V
V
V
mA
V
mV
mA
mA
mV
ns
W
W
V
V
V
mA
mA
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