NE5560 Philipss, NE5560 Datasheet - Page 11

• Manufacturer Part Number: NE5560
• Description: Switched-mode power supply control circuit
• Manufacturer: Philipss

Philips Semiconductors
1994 Aug 31
Switched-mode power supply control circuit
START
STOP
0.6V
100
90
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
10
0
Figure 13. Soft-Start Minimum Duty Cycle vs R
0.1 0.2
10
MAX
MAX
MAX
(%)
3
MAX (%)
50%
70%
30%
Figure 12. Graph for Determining
MAX
0.3
Figure 14. Current Protection Input
2
90%
0.4
0.5 0.6
3
11
4
0.7
5
11
0.8
6 7 8 9
0.9
10
1
4
0.48V
MAX
R 1
R 2
from
PWM
2
1
R 2
+ R
R
R
1
2
2
R
1
RESET
OF OUTPUT
BISTABLE
( )
+ R
12
2
6
2
DUTY
CYCLE
CONTROL
NE/SE5560
Product specification
SL00373
SL00371
SL00372