MAX8664
Low-Cost, Dual-Output, Step-Down
Controller with Fast Transient Response
______________________________________________________________________________________ 13
FB1
IN
PWRGD
V
CC
VL
GND
OSC/EN12
REFIN2
ILIM2
FB2
ILIM1
DH1
LX1
BST1
DL1
PGND
DH2
LX2
BST2
DL2
VCC
INPUT
10V TO 14V
POWER-GOOD
TO SYSTEM
ENABLE
OUT1
1.8V/20A
OUT2
0.9V/6A
C5
1μF
C6
1μF
C13
4.7μF
R9
10kΩ
C1
0.01μF
R1
3.16kΩ
C2
10μF
C8
0.015μF
R3
10kΩ
R4
3.57kΩ
L1
0.56μH
C15
0.01μF
L2
0.47μH
R13
10kΩ
C19
4700pF
N1
N5
R2
24.3kΩ
R11
14.7kΩ
R5
3Ω
N7
2N7002
OUT1
R7
1kΩ
R6
1kΩ
C12
1000pF
R10
44.2kΩ
ON
OFF
C7
0.22μF
C18
0.22μF
C14
2200pF
C3
10μF
C4
1000μF
C16
10μF
C17
10μF
C11
10μF
C9
470μF
C10
470μF
C22
10μF
C20
680μF
C21
680μF
N6
N2
N3 N4
R8
2.74kΩ
MAX8664
R12
2Ω
C23
2200pF
Figure 3. 500kHz Tracking Circuit for DDR2 Applications
MAX8664
Low-Cost, Dual-Output, Step-Down
Controller with Fast Transient Response
14 ______________________________________________________________________________________
Table 3. Component List for Figure 3
DESIGNATION
QTY
DESCRIPTION
C1, C15 2
0.01µF, 10V X7R ceramic
capacitors
C2, C3, C16, C17
4
10µF, 16V X5R ceramic capacitors
C4 1
1000µF/16V aluminum electrolytic
capacitor
Rubycon 16MBZ1000M
C5 1 1µF, 16V X5R ceramic capacitor
C6 1 1µF, 10V X5R ceramic capacitor
C7, C18 2
0.22µF, 10V X7R ceramic
capacitors
C8 1
0.015µF, 10V X7R ceramic
capacitor
C9, C10 2
470µF, 2.5V POS capacitors
Sanyo 2R5TPD470M6
C11, C22 2
10µF, 6.3V X5R ceramic capacitors
C12 1
1000pF, 10V X7R ceramic
capacitor
C13 1
4.7µF, 10V X5R ceramic capacitor
C14, C23 2 2200pF, 25V X7R capacitors
C19 1 4700pF, 10V X7R capacitor
C20, C21 2
680µF, 2.5V POS capacitors
Sanyo 2R5TPD680M6
L1 1
0.56µH, 4.6mΩ inductor
Panasonic ETQP4LR56WFL
DESIGNATION
QTY
DESCRIPTION
L2 1
0.47µH, 1.2mΩ inductor
TOKO FDV0603-R47M
N1, N2 2
n-channel MOSFETs
IRLR7821 (D-Pak)
N3, N4 2
n-channel MOSFETs
IRLR3907Z (D-Pak)
N5 1
n-channel MOSFET
IRF7807Z (8-pin SO)
N6 1
n-channel MOSFET
IRF7821 (8-pin SO)
N7 1
n-channel MOSFET
2N7002 (SOT23)
R1 1
3.16kΩ ±1% resistor (0402 or 0603)
R2 1
24.3kΩ ±1% resistor (0402 or 0603)
R3, R13 2
10kΩ ±1% resistors (0402 or 0603)
R4 1
3.57kΩ ±5% resistor (0402 or 0603)
R5 1 3.0Ω ±5% resistor (0603)
R6, R7 2 1kΩ ±1% resistors (0402 or 0603)
R8 1
2.74kΩ ±1% resistor (0402 or 0603)
R9 1
10kΩ ±5% resistor (0402 or 0603)
R10 1
44.2kΩ ±1% resistor (0402 or 0603)
R11 1
14.7kΩ ±1% resistor (0402 or 0603)
R12 1 2.0Ω ±5% resistor (0402 or 0603)
MAX8664
Low-Cost, Dual-Output, Step-Down
Controller with Fast Transient Response
______________________________________________________________________________________ 15
MAX8664
ILIM1
C2
1μF
DH1
C5
1μF
C6
4.7μF
LX1
BST1
DL1
PGND
ILIM2
DH2
LX2
BST2
DL2
FB1
IN
5V
POWER-GOOD
TO SYSTEM
VCC
C1
0.01μF
N1
IRF7821
R2
17.4kΩ
L1
0.2μH
R3
10kΩ
R4
3.16kΩ
C8
820pF
OUT1
1.8V/10A
INPUT
2.97V TO 3.63V
N2
IRF7821
R1
3.32kΩ
R12
22.6kΩ
R7
10kΩ
VCC
0.6V
EXT REF
VL
V
CC
REFIN2
C7
0.22μF
C13
2200pF
R6
2Ω
GND
PWRGD
R10
10kΩ
R5
10Ω
N5
2N7002
Q1
CMST3904
OSC/EN12
FB2
C12
1μF
R8
10kΩ
R9
47kΩ
C14
0.01μF
C3
10μF
C4
10μF
C11
0.1μF
C10
47μF
C9
47μF
C16
1μF
C15
0.01μF
N3
IRF7821
R15
10kΩ
R13
2Ω
C20
2200pF
R16
6.34kΩ
L2
0.2μH
R14
17.4kΩ
C21
820pF
OUT2
1.2V/10A
N4
IRF7821
R11
3.32kΩ
C19
0.22μF
C17
10μF
C18
10μF
C24
0.1μF
C23
47μF
C22
47μF
Figure 4. 1MHz Application Circuit with All Ceramic Capacitors and Sequenced Outputs

MAX8664EVKIT+

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
Power Management IC Development Tools MAX8664 Evan Kit
Lifecycle:
New from this manufacturer.
Delivery:
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