Philips FM24 - 8 Electrical Alignments; 9 Circuit Descriptions; IC Data

Circuit Descriptions and List of Abbreviations
EN 110 FM249.
9.9 IC Data
In this paragraph, the internal block diagrams and pinning are
given of ICs that are drawn as a ‘black box’ in the electrical
diagrams (with exception of ‘memory’ and ‘logic’ ICs).
9.9.1 Diagram P2, TNY256 (IC7500)
Figure 9-21 Internal Block Diagram and pinning TNY256
9.9.2 Diagram P5, MC33368 (IC7650)
Figure 9-22 Internal Block Diagram and pinning MC33368
CLOCK
OSCILLATOR
5.8 V
5.1 V
SOURCE
(S)
S
R
Q
DC
MAX
BYPASS
(BP)
+
-
V
I
LIMIT
LEADING
EDGE
BLANKING
THERMAL
SHUTDOWN
+
-
DRAIN
(D)
1 5
4
REGULATOR
5.8 V
BYPASS PIN
UNDER-VOLTAGE
1.5 V + V
TH
ENABLE/
UNDER-VOLTAGE
(EN/UV)
Q
50 A
LINE UNDER-VOLTAGE
RESET
AUTO-
RESTART
COUNTER
JITTER
1.5 V
CLOCK
EN/UV
D
S
S
8
5
7
6
1
4
2
3
S
S
S
BP
CL 165320 99 _ 113 .eps
270901
Restart Delay
Output
Overvoltage
Multiplier/
Error
Amplifier
Current
Sense
WatchdogTimer/
Zero Current Detector
FB
2
16
12
1
8
11
10
13
3
4
5
9
6
7
Restart Delay
Comp
Mult
LEB
Current Sense
ZC Det
Frequency
Clamp
Internal Bias
Generator
UVLO
S
S
R
Q
PWM
Line
V
CC
V
ref
AGnd
Gate
PGnd
Frequency
Clamp
116
13
12
11
10
9
2
3
4
5
6
7
8
(Top View)
5.0 V
ref
Restart Delay
Voltage FB
Current Sense
Zero Current
AGnd
Line
LEB
PIN CONNECTIONS
Comp
Mult
Frequency Clamp
V
CC
Gate
PGnd
15
14
N/C
N/C
CL 16532099_114.eps
270901
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31/8/2014
Digitized in Heiloo, Holland