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MAX8539EEI+
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P23
MAX8537/MAX8538/MAX8539
Dual-Synchr
onous Buck Contr
ollers for Point-of-
Load, T
racking, and DDR Memor
y Power Supplies
10
______________________________________________________________________________________
MAX8537
DL2
COMP2
GND
POK2
EN1
VTTR
FB2
SS2
FB1
ILIM2
PGND
LX2
ILIM1
FREQ
AVL
V+
VL
DL1
LX1
DH1
U1
BST1
BST2
DH2
EN2
REFIN
SS1
COMP1
POK1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
C17
3.9nF
C16
1
µ
F
VL
VL
VL
C2
10
µ
F
C3
1000
µ
F
C28
1000
µ
F
C29
1000
µ
F
C5
0.47
µ
F
C8
47pF
C6
0.47
µ
F
C9
47pF
C11, C30,
C31, C32
680
µ
F
C12, C36
220
µ
F
C13
10
µ
F
C14
1
µ
F
C15
1
µ
F
C19
8.2nF
C18
15pF
C20
39pF
C21
3.9nF
C22
820pF
C24
0.01
µ
F
C25
220pF
D1
D2
R2
402
Ω
R3
402
Ω
R19
100k
Ω
R20
100k
Ω
R5
100k
Ω
R6
100k
Ω
R7
2.2
Ω
R8
4.7
Ω
R9
51.1k
Ω
R10
10.0k
Ω
R11
51k
Ω
R12
510
Ω
R13
1.2k
Ω
R15
21.5k
Ω
R17
10.0k
Ω
R18
10.0k
Ω
N1
N5
N8
N7
L1
0.9
µ
H
L2
0.8uH
POK1
POK2
EN1
EN2
VIN (10.8V TO 13.2V)
VOUT2
1.25V/
±
12A
VOUT1
2.5V/20A
VTTR
R16
10.0k
Ω
C23
0.01
µ
F
R14
22k
Ω
C4
10
µ
F
N3
N4
C1
1000
µ
F
C26
1000
µ
F
C27
1000
µ
F
R1
0.005
Ω
R24
3.3
Ω
C41
47nF
C42
0.15
µ
F
R4
0.003
Ω
R25
3.3
Ω
Figure 1. Typical Application Circuit: MAX8537 DDR Memory Application (400kHz Switching)
MAX8537/MAX8538/MAX8539
Dual-Synchr
onous Buck Contr
ollers for Point-of-
Load, T
racking, and DDR Memor
y Power Supplies
______________________________________________________________________________________
11
MAX8539
DL2
COMP2
GND
POK2
EN1
VTTR
FB2
SS2
FB1
ILIM2
PGND
LX2
ILIM1
FREQ
AVL
V+
VL
DL1
LX1
DH1
BST1
U1
BST2
DH2
EN2
REFIN
SS1
COMP1
POK1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
C17
1.8nF
C16
1
µ
F
VL
VL
VL
C2
10
µ
F
VOUT1
C3
1000
µ
F
C28
1000
µ
F
C29
1000
µ
F
C5
0.47
µ
F
C6
0.47
µ
F
C11, C30,
C31, C32
680uF
C12, C36, C37
680
µ
F
C13
10
µ
F
C14
1
µ
F
C40
2.2nF
C15
1
µ
F
C19
2.2nF
C18
10pF
C20
56pF
C21
15nF
C22
2.7nF
C24
0.01
µ
F
C25
220pF
D1
D2
R19
100k
Ω
R20
100k
Ω
R5
100k
Ω
R6
100k
Ω
R7
2.2
Ω
R8
4.7
Ω
R9
51.1k
Ω
R10
10.0k
Ω
R11
82k
Ω
R12
2.2k
Ω
R13
2.2k
Ω
R15
12.7k
Ω
R17
10.0k
Ω
R18
10.0k
Ω
N1
N5
N7
N8
L1
0.8
µ
H
L2
0.5uH
C39
1.0nF
POK1
POK2
EN1
EN2
VIN (10.8V TO 13.2V)
VOUT2
0.9V/
±
7A
VOUT1
1.8V/15A
VOUT1
VTTR
R16
10.0k
Ω
C23
0.01
µ
F
R14
12k
Ω
C4
10
µ
F
N4
N3
R21
2.2
Ω
R2
750
Ω
C7
0.1
µ
F
R22
1.5
Ω
R3
1.0k
Ω
C10
0.1
µ
F
R25
1
Ω
R24
1
Ω
Figure 2. MAX8539 DDR Memory Application (400kHz Switching)
MAX8537/MAX8538/MAX8539
Dual-Synchr
onous Buck Contr
ollers for Point-of-
Load, T
racking, and DDR Memor
y Power Supplies
12
______________________________________________________________________________________
MAX8538
DL2
COMP2
GND
POK2
EN1
GND
FB2
SS2
FB1
ILIM2
PGND
LX2
ILIM1
FREQ
AVL
V+
VL
DL1
LX1
DH1
BST1
BST2
DH2
EN2
N.C.
SS1
COMP1
POK1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
C17
6.8nF
VL
VL
VL
C2
10
µ
F
C3
1000
µ
F
C28
1000
µ
F
C29
1000
µ
F
C5
0.47
µ
F
C6
0.47
µ
F
C12, C26
680
µ
F
C13
10
µ
F
C14
1
µ
F
C15
1
µ
F
C19
1.8nF
C18
10pF
C20
47pF
C21
0.010
µ
F
C22
2.2nF
C24
0.01
µ
F
C23
0.01
µ
F
D1
D2
R19
100k
Ω
R20
100k
Ω
R5
100k
Ω
R6
100k
Ω
R7
2.2
Ω
R8
4.7
Ω
R9
51.1k
Ω
R10
21.5k
Ω
R11
21.5k
Ω
R12
1.0k
Ω
R13
2.2k
Ω
R15
12.7k
Ω
N1
N5
N7
N8
L1
1.0
µ
H
L2
3.2
µ
H
C39
1.0nF
POK1
POK2
EN1
EN2
VIN (10.8V TO 13.2V)
VOUT2
2.5V/
5A
VOUT1
1.8V/15A
R16
10.0k
Ω
R14
14k
Ω
N4
N3
R21
2.2
Ω
R2
511
Ω
C7
0.1
µ
F
R22
1.5
Ω
R3
1.0k
Ω
C10
0.1
µ
F
C1
1000
µ
F
C11
470
µ
F
R23
10.0k
Ω
C4
10
µ
F
C40
2.2nF
U1
R24
1
Ω
R25
1
Ω
Figure 3. MAX8538 PowerPC™ Application (400kHz Switching)
PowerPC is a trademark of Motorola, Inc.
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P23
MAX8539EEI+
Mfr. #:
Buy MAX8539EEI+
Manufacturer:
Maxim Integrated
Description:
Switching Controllers Dual-Synchronous Buck Controller
Lifecycle:
New from this manufacturer.
Delivery:
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