NE5562D Philipss, NE5562D Datasheet - Page 16

• Manufacturer Part Number: NE5562D
• Description: Switched-mode power supply control circuit
• Manufacturer: Philipss

Philips Semiconductors
1994 Aug 31
OC ACCUM
Switched-mode power supply control circuit
Q263
R73
10k
Q260
90
80
70
60
50
40
30
20
10
Figure 25. Maximum Duty Cycle
0
LOW SUPPLY
Q261
SHUTDOWN LATCH
Q262
0.1
SENSE
0.2 0.3
Q264
Q265
0.4 0.5
Q267
Q266
R74
10k
+
R 1
0.6 0.7
BULK
SENSE
R 2
R75
18k
Q268
V Z
DUTY
CYCLE
CONTROL
Q269
R 2
Figure 26. Start-Stop/Shutdown Latches
OUTPUT
RESET 0V
NOR
0.8
Q270
TO
7.50 V
Q271
SL00412
R76
15k
SENSE
OC2
Q272
R77
10k
DEMAG/OV
SENSE
Q280
Q273
SIGNAL
16
GND
20
REMOTE
ON/OFF
Q274
START STOP LATCH
Q276
Q275
Q281
Q278
Q277
Q279
R78
10k
1.5V
OUTPUT
NOR
Q283
TO
Q283B
V
Q282
Z
R79
10k
NE/SE5562
Q284
Q283A
Product specification
C
DISCHARGE
SS
SLOW-START
COMPARATOR
+
RESET
SL00413