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Lista de partido
LTC1553CG
5-Bit Programmable Synchronous Switching Regulator Controller for Pentium® II Processor
Linear Technology
LTC1553CG Datasheet PDF : 24 Pages
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LTC1553
TEST CIRCUITS
3k
3k
100pF
+
3k
10
µ
F
100pF
100pF
VID0 TO VID4
C1
150pF
R
C
8.2k
C
C
0.01
µ
F
V
CC
PV
CC
5V
12V
+
0.1
µ
F 10
µ
F
0.1
µ
F
10k
OUTEN
V
CC
PV
CC
I
FB
PWRGD
G1
FAULT
OT
LTC1553
I
MAX
NC
VID0 TO VID4
G2
COMP
SS SGND GND SENSE
V
IN
5V
+
C
IN
**
1200
µ
F
×
4
Q1*
L
O
†
2
µ
H
15A
+
C
OUT
††
Q2*
330
µ
F
×
7
V
OUT
0.1
µ
F
0.1
µ
F
Figure 2
*SILICONIX SUD50N03-10
**SANYO 10MV1200GX
†
COILTRONICS CTX02-13198 OR
PANASONIC 12TS-2R5SP
††
AVX TPSE337M006R0100
1553 F02
V
CC
NC
NC
NC
NC
V
CC
VID0 VID1 VID2 VID3 VID4
VID0 VID1 VID2 VID3 VID4
OUTEN
PWRGD
FAULT
LTC1553
OT
COMP
SS
SGND GND
10k
V
CC
I
FB
PV
CC
G1
I
MAX
G2
SENSE
0.1
µ
F
PV
CC
+
10
µ
F
+
NC
0.1
µ
F
10
µ
F
NC
NC
NC
1553 F03
Figure 3
8
+
10
µ
F
V
CC
PV
CC
5V
12V
0.1
µ
F 10k
V
CC
I
FB
PV
CC
G1
LTC1553
SENSE
G2
SGND GND
+
0.1
µ
F
10
µ
F
G1 RISE/FALL
5000pF
G2 RISE/FALL
5000pF
Figure 4
t
r
90%
50%
10%
t
f
90%
50%
10%
t
NOL
50%
t
NOL
50%
1553 F04
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