Low Cost Green-Mode PWM Controller for Flyback Converters
Product Specification
SG6848
TYPICAL CHARACTERISTICS
Start-up Threshold Voltage (VTH(ON)) vs
Tem perature
17.0
16.5
16.0
15.5
15.0
14.5
-40 -25 -10
5 20 35 50 65 80
TEMPERATURE (℃ )
95 110 125
M in. Operating Voltage (VDD (min)) vs
Te m pe r ature
12.2
12.0
11.8
11.6
11.4
11.2
11.0
10.8
10.6
-40 -25 -10
5 20 35 50 65 80
TEMPERATURE (℃ )
95 110 125
Start-up Crrent (IDD ST) vs Tem perature
30
25
20
15
10
5
0
-40 -25 -10
5 20 35 50 65 80
TEMPERATURE (℃ )
95 110 125
Frequency in green m ode (FOSC-green)
vs Tem perature
15
14
13
12
11
10
9
8
-40 -25 -10
5 20 35 50 65 80
TEMPERATURE (℃ )
95 110 125
PWM Oscillator Frequency (FOSC) vs
Tem perature
74.0
72.5
71.0
69.5
68.0
66.5
65.0
-40 -25 -10
5 20 35 50 65 80
TEMPERATURE (℃ )
95 110 125
Max. Duty Cycle (DC(MAX)) vs
Tem perature
80
79
78
77
76
75
74
73
72
71
70
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (℃ )
© System General Corp.
-6-
Version 1.4(IRO33.0010.B2)
www.sg.com.tw
Apr.08, 2004