ꢀ ꢁꢂꢃ ꢂꢄ ꢅ ꢀꢁꢆ ꢃ ꢂꢄ
ꢇ ꢈꢁꢉ ꢊ ꢋꢌ ꢍ ꢎ ꢁ ꢏꢉ ꢊꢀ ꢈꢐꢑ ꢍ ꢒꢌ ꢓ ꢔꢕ ꢒꢉ ꢊꢋꢌꢕ ꢇꢀ
SLVS077D – APRIL 1977 – REVISED FEBRUARY 2003
†
APPLICATION INFORMATION
V
CC
= 15 V
15
15 kΩ
1N916
V
CC
5 kΩ
–5 V
20 mA
11
12
1
IN–
EMIT 1
COL 1
SG2524
5 kΩ
2
5 kΩ
0.1 µF
IN+
20 µF
1N916
1N916
16
13
14
REF OUT
COL 2
EMIT 2
+
2 kΩ
6
7
R
C
T
T
4
5
CURR LIM+
10
0.01 µF
.
CURR LIM–
SHUTDOWN
50 µF
9
3
+
OSC OUT
COMP
GND
8
Figure 12. Capacitor-Diode Output Circuit
V
CC
= 5 V
1N916
50T
15 V
+
+
50 µF
50 µF
100 µF
15
5 kΩ
300 Ω
200 Ω
20T
25 kΩ
V
CC
1
11
12
20 mA
IN–
EMIT 1
+
SG2524
5 kΩ
2
0.1 µF
IN+
50T
COL 1
1 MΩ
–15 V
5 kΩ
16
13
14
4
REF OUT
COL 2
EMIT 2
1N916
TIP29A
2 kΩ
6
R
T
7
C
T
CURR LIM+
10
5
0.02 µF
620 Ω
SHUTDOWN
OSC OUT
CURR LIM–
1N916
2N2222
3
9
COMP
510 Ω
GND
0.001 µF
8
+
1 Ω
4.7 µF
Input
Return
Figure 13. Flyback Converter Circuit
†
Throughout these discussions, references to the SG2524 apply also to the SG3524.
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
