Philips 32PFL8605H/12 Service Manual page 87

8.17 Diagram B14 820400091002 TCON
Block diagram
Pinning information
SHARP, ISL97653AIRZ (IC 7KFA)
RSET HVS
HVS
CM1
LOGIC
GM AMPLIFIER
FBB -
+
V
REF
UVLO COMPARATOR
-
+
0.75 V
REF
680kHz
FREQ
OSCILLATOR
VL
P
REGULATOR
VIN1,2
REFERENCE BIAS
CDEL
SEQUENCE CONTROLLER
EN
P
VIN1,2
SUPN
N
OUT
CURRENT
COMPARATOR
FBN -
+
+
0.2V
UVLO COMPARATOR
-
+
0.4V
0.75 V
REF
-
+
SUPP
FBP
-
+
V
REF
SUPP
C1- C1+
PVIN2
CB
LXL1
LXL2
PGND3
PGND4
CM2
FBL
VL
VREF
10
Figure 8-17 Internal block diagram and pin configuration
IC Data Sheets
V PROT
REF
SAWTOOTH
GENERATOR
SLOPE
COMPENSATION
CONTROL
Ε
LOGIC
CURRENT
AMPLIFIER
CURRENT LIMIT
COMPARATOR
AND
VL
CONTROL
LOGIC
BUFFER
LIMIT
CURRENT AMPLIFIER
Ε
-
CURRENT LIMIT
THRESHOLD
SAWTOOTH
GENERATOR
P C2+ C2- DRN CTL
OUT
40 39 38 37 36 35 34
1
2
3
4
5 ISL97653A
40 LD 6X6 QFN
6
TOP VIEW
7
8
9
11 12 13 14 15 16 17
back to
div. table
Q551.1E LA
LX1
LX2
BUFFER
R
SENSE
PGND1
PGND2
CURRENT LIMIT
THRESHOLD
CB
LXL1
LXL2
CM2
GM AMPLIFIER
FBL
-
+
V
REF
SLOPE
COMPENSATION
LDO-CTL
LDO
CONTROL
LDO-FB
LOGIC2
TEMP
TEMP
SENSOR
P
OUT
COM
33 32 31
30 COMP
29 FBB
28 RSET
27 HVS
26
EN
CDEL
25
24 CTL
23 DRN
22 COM
21 POUT
18 19 20
8. EN 87
18770_307_100217.eps
100217
2010-Oct-01