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ADP3155 Datasheet(PDF) 4 Page - Analog Devices

Part # ADP3155
Description  5-Bit Programmable Triple Power Supply Controller for Pentium III Processors
PDF  14 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP3155 Datasheet(HTML) 4 Page - Analog Devices

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REV. A
ADP3155
–4–
P
SYSTEM
R1
150k
R2
39k
CT
200pF
22 F
1 F
10BQ015
1 F
ESR = 25m
EACH
2200 F
3
L2
1 H
L1
1.7 H
RSENSE
5m
ESR = 25m
EACH
2200 F
6
VO
2V
0–19A
RTN
220
100k
VIN +5V
+5V RTN
+12V RTN
CCOMP
2nF
1000 F
IRF3103
1nF
R4
5k
RTN
220
VIN +12V
2k
470pF
R3
20k
VLDO1
+1.5V
4A
VIN +1.8V
Q4
IRLR3703
1000 F
R6
21.7k
R5
20k
1 F
VINLDO2
+3.3V
VLDO2
+2.5V
0–2A
RTN
Q1
IRL3803
Q2
IRL3803
2k
470pF
1 F
22
ADP3155
SENSE+
SENSE–
VLDO1
VID2
VID3
VID4
FB1
SD
AGND
VID1
CT
CMP
VLDO2
PGND
DRIVE1
DRIVE2
FB2
PWRGD
VCC
VID0
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Figure 2. Typical VRM8.2/8.3/8.4 Compliant Core DC/DC Converter Circuit
gm
NONOVERLAP
DRIVE
IN
CROWBAR
15
16
SD
VCC DRIVE1 DRIVE2 PGND
VREF + 15%
5
AGND
PWRGD
SENSE+
DELAY
VREF + 5% VREF – 5%
SENSE–
2R
ADP3155
CMPI
DAC
CMP
1.20V
VID0
1
VID1
2
VID2
3
VID3
4
VID4
VREF
VT1
CMPT
VT2
CT
SENSE–
6
REFERENCE
R
9
10
S
R
Q
OFF-TIME
CONTROL
VIN
12
11
8
VLDO1
FB1
OFF
18
17
13 VLDO2
FB2
14
Figure 3. Functional Block Diagram



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