Philips 32PFL5405H/05 Service Manual page 76

EN 76 8. Q552.1E LA
8.17 Diagram TCON DC/DC
Block diagram
Pinning information
2010-Feb-19
IC Data Sheets
B14B, 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+ P
PVIN2
CB
LXL1
LXL2
PGND3
PGND4
CM2
FBL
VL
VREF 10
Figure 8-17 Internal block diagram and pin configuration
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
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
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
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