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ADP3156 Datasheet(PDF) 4 Page - Analog Devices

Part # ADP3156
Description  Dual Power Supply Controller for Desktop Systems
PDF  12 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP3156 Datasheet(HTML) 4 Page - Analog Devices

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REV. 0
ADP3156
–4–
P
SYSTEM
R1
110k
R2
16k
CT
200pF
22 F
1 F
22
IRL3103
IRL3103
10BQ015
1 F
ESR = 34m
2700 F
2
(10V)
L2
1.7 H
L1
3 H
RSENSE
12.9m
ESR = 60m
470 F
4
VO
1.8V
7A
RTN
220
100k
5V
5V RTN
12V RTN
CCOMP
2nF
1000 F
IRL3103
1nF
R4
5k
RTN
220
12V
2k
47pF
R3
20k
VO2
+1.5V
4A
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
NC
NC
AGND
SD
FB
VLDO
SENSE–
SENSE+
PGND
NC
DRIVE1
DRIVE2
VCC
PWRGD
CMP
CT
ADP3156-1.8
Figure 2. ADP3156 Typical VRM8.4 AGP and GTL Chipset DC/DC Converter Circuit
CMPI
VT1
VREF +5% VREF –5%
DELAY
VREF +15%
PWRGD
SENSE+
CROWBAR
OFF
IN
NONOVERLAP
DRIVE
Q
S
R
DRIVE1 DRIVE2 PGND
2R
SENSE–
VREF
VCC
SD
VLDO
VT2
CMPT
CT
gm
R
REFERENCE
OFF-TIME
CONTROL
VIN
SENSE–
CMP
FB
ADP3156
AGND
Figure 3. Functional Block Diagram



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