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NCP1653, NCP1653A
ELECTRICAL CHARACTERISTICS (For typical values T J = 25 ° C. For min/max values, T J = ? 40 ° C to +125 ° C, V CC = 15 V,
I FB = 100 m A, I vac = 30 m A, I S = 0 m A, unless otherwise specified)
Characteristics
Pin
Symbol
Min
Typ
Max
Unit
SUPPLY SECTION
Supply Voltage
8
UVLO Startup Threshold
Minimum Operating Voltage after Startup
UVLO Hysteresis
V CC(on)
V CC(off)
V CC(H)
12.25
8.0
4.0
13.25
8.7
4.55
14.5
9.5
?
V
V
V
Supply Current:
8
Startup (V CC = V CC(on) ? 0.2 V)
Startup (V CC < 8.0 V, I FB = 200 m A)
Startup (8.0 V < V CC < V CC(on) ? 0.2 V, I FB = 200 m A)
Startup (V CC < V CC(on) ? 0.2 V, I FB = 0 m A) (Note 3)
Operating (V CC = 15 V, Drv = open, V M = 3 V)
Operating (V CC = 15 V, Drv = 1 nF to Gnd, V M = 1 V)
Shutdown (V CC = 15 V and I FB = 0 A)
I stup
I stup1
I stup2
I stup3
I CC1
I CC2
I stdn
?
?
?
?
?
?
?
18
0.95
21
21
3.7
4.7
33
50
1.5
50
50
5.0
6.0
50
m A
mA
m A
m A
mA
mA
m A
3. Please refer to the “Biasing the Controller” Section in the Functional Description.
TYPICAL CHARACTERISTICS
110
100
105
100
95
90
85
80
NCP1653
99
98
97
96
95
94
75
70
65
NCP1653A
93
92
91
V M = 0 V
60
? 50
? 25
0
25
50
75
100
125
90
? 50
? 25
0
25
50
75
100
125
T J , JUNCTION TEMPERATURE ( ° C)
Figure 3. Switching Frequency vs. Temperature
14
T J , JUNCTION TEMPERATURE ( ° C)
Figure 4. Maximum Duty Cycle vs. Temperature
205
12
10
8
6
4
2
R OH
R OL
204
203
202
201
200
199
198
197
196
0
? 50
? 25
0
25
50
75
100
125
195
? 50
? 25
0
25
50
75
100
125
T J , JUNCTION TEMPERATURE ( ° C)
Figure 5. Gate Drive Resistance vs. Temperature
http://onsemi.com
5
T J , JUNCTION TEMPERATURE ( ° C)
Figure 6. Reference Current vs. Temperature
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