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NCP1651
http://onsemi.com
5
ELECTRICAL CHARACTERISTICS (continued) (Unless otherwise noted: V
CC
= 14 volts, C
T
= 470 pF, C
12
= 0.1 mF, T
j
= 25癈 for
typical values. For min/max values T
j
is the applicable junction temperature.)
Characteristic
Symbol
Min
Typ
Max
Unit
DRIVE OUTPUT
Source Resistance (1.0 Volt Drop)
R
source
- -
8.0
15
?/DIV>
Sink Resistance (1.0 Volt Drop)
R
sink
- -
8.0
15
?/DIV>
Rise Time (C
L
= 1.0 nF)
t
r
- -
50
- -
ns
Fall Time (C
L
= 1.0 nF)
t
f
- -
50
- -
ns
Output Voltage in UVLO Condition (Drive out = 100 mA in, 1 nF load)
V
O(UV)
- -
1.0
10
mV
VOLTAGE REFERENCE
Buffered Output (I
load
= 0 mA, V
CC
= 12 VDC, Temperature)
Vref
OUT
6.24
6.50
6.76
V
Load Regulation (Buffered Output, Io = 0 to 10 mA, V
CC
>
10 V)
DVref
OUT
0
- -
40
mV
FB/SD PIN
Opto Current Source (Unit Operational, V
FB
= 0.5 V)
I
OPTO
0.8
1.1
1.4
mA
Opto Current Source (Shutdown, V
FB
= 0.1 V)
- -
15
20
25
mA
Input Voltage for 0 Duty Cycle (Note 2)
- -
1.5
- -
- -
- -
Input Voltage for 95% Duty Cycle (Note 2)
- -
- -
- -
4.0
V
Open Circuit Voltage (Device Operational) (Note 2)
V
OC
- -
- -
12
V
Clamp Voltage (Device in Shutdown Mode) (Note 2)
V
CL
0.9
1.5
1.6
V
Shutdown Start Up Threshold (Pin 8) (V
out
Increasing)
V
SD
0.40
0.60
0.70
V
Shutdown Hysteresis (Pin 8)
V
H
30
75
130
mV
STARTUP/UVLO
UVLO Startup Threshold (V
CC
Increasing)
V
SU
10
10.75
11.5
V
UVLO Hysteresis (Shutdown Voltage = V
SU
 V
H
)
V
H
0.8
1.0
1.2
V
Overtemperature Trip Point (Note 2)
T
SD
140
160
180
癈
Overtemperature Hysteresis (Note 2)
- -
- -
30
- -
癈
HIGH VOLTAGE STARTUP (Pin 16 = 50 V)
Startup Current (out of pin 13) (V
CC
= UVLO - - 0.2 V)
I
SU
3.0
5.5
8.0
mA
Startup Current (out of pin 13) (V
CC
= 0 V)
5.0
8.5
12
mA
Min. Startup Voltage (pin 16, pin 13 current = 1 mA)
V
SU
- -
17
20
V
Line Pin Leakage (pin 16, Startup Circuit Inhibited)
(V
DS
= 400 V, T
A
= +25癈)
T
A
= +125癈
I
leak
- -
- -
25
15
40
80
mA
TOTAL DEVICE
Operational Bias Current (C
L(Driver)
= 1.0 nF, f
osc
= 100 kHz)
I
BIAS
- -
4.0
5.0
mA
Bias Current in Undervoltage Mode
I
Bshutdown
- -
0.75
1.2
mA
2.  Verified by design.
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