General Description
The MAX8664 evaluation kit (EV kit) is a fully assembled
and tested circuit for evaluating the MAX8664A/
MAX8664B dual-output step-down controllers. The
MAX8664 EV kit operates with a 600kHz switching fre-
quency and is optimized for operation from a 10.8V to
13.2V supply. The EV kit can operate down to 4.5V with
minor changes. The two step-down outputs provide up
to 8A each at 2.5V for OUT1 and 1.8V for OUT2.
Options are provided for sequencing or tracking of
OUT2. The MAX8664A (independent fault action)
comes installed in the EV kit and it can be replaced
with the MAX8664B (joint fault action) with no other
required component changes.
Features
o ±0.8% Output Accuracy Over Load and Line
o Operates from a Single 10.8V to 13.2V Supply
o OUT1 Provides 2.5V at Up to 8A
o OUT2 Provides 1.8V at Up to 8A
o Digital Soft-Start Reduces Inrush Current
o 180° Out-Of-Phase Operation Reduces Input
Ripple Current
o Overcurrent and Overvoltage Protection
o External Reference Input for Second Controller
o Prebiased Startup Operation
o Fully Assembled and Tested
Evaluates: MAX8664A/MAX8664B
MAX8664 Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
19-4693; Rev 0; 6/09
Component List
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
DESIGNATION QTY DESCRIPTION
C1, C3, C20,
C21
4
10µF ±20%, 16V X5R ceramic
capacitors (1206)
TDK C3216X5R1C106M
Murata GRM31CR61C106KA88L
C2, C29–C36 0
Not installed, electrolytic capacitors
(8mm diameter)
C4 1
1000µF ±20%, 16V electrolytic
capacitor (8mm diameter, 20mm
height)
SANYO 16ME1000WG
C5 1
390pF ±5%, 50V C0G ceramic
capacitor (0603)
TDK C1608C0G1H391J
Murata GRM1885C1H391JA01B
C6, C7, C8 3
22µF ±20%, 6.3V X5R ceramic
capacitors (1206)
TDK C3216X5R0J226M
Murata GRM31CR60J226KE19
C9, C10 2
47µF ±20%, 6.3V X5R ceramic
capacitors (1206)
TDK C3216X5R0J476M
Murata GRM31CR60J476ME19
C11 0 Not installed, capacitor (1206)
DESIGNATION QTY DESCRIPTION
C12 1
470pF ±5%, 50V C0G ceramic
capacitor (0603)
TDK C1608C0G1H471J
Murata GRM1885C1H471JA01B
C13, C15 2
0.22µF ±10%, 25V X7R ceramic
capacitors (0603)
TDK C1608X7R1E224K
Murata GRM188R71E224K
C14 1
4.7µF ±10%, 6.3V X5R ceramic
capacitor (0805)
TDK C2012X5R0J475K
Murata GRM21BR60J475KA37L
C16, C19 2
0.01µF ±10%, 50V X7R ceramic
capacitors (0603)
TDK C1608X7R1H103K
Murata GRM188R71H103KA01
C17 1
1µF ±20%, 16V X5R ceramic
capacitor (0603)
TDK C1608X5R1C105M
Murata GRM188R71C105KA12
C18 1
1µF ±20%, 6.3V X5R ceramic
capacitor (0603)
TDK C1608X5R0J105M
Murata GRM185R60J105KE21
PART TYPE
MAX8664EVKIT+ EV Kit
+
Denotes lead(Pb)-free and RoHS-compliant.
Evaluates: MAX8664A/MAX8664B
MAX8664 Evaluation Kit
2 _______________________________________________________________________________________
Component List (continued)
DESIGNATION QTY DESCRIPTION
C22, C23 2
0.1µF ±20%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1E104M
C24, C27, C28 0 Not installed, capacitors (0603)
C25, C26 2
680pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H681J
Murata GRM1885C1H681JA01B
C37, C38 0 Not installed, capacitors (0805)
JU1, JU2 2 3-pin headers
JU3 1 2-pin header
L1, L2 2
1µH inductors
TOKO FDV0630-1R0M
N1, N3 2
n-channel MOSFETs (8 SO)
Fairchild Semiconductor FDS6690A
Vishay Si4894BDY
International Rectifier IRF7807ZPBF
International Rectifier IRF7821PBF
N2, N4 2
n-channel MOSFETs (8 SO)
Fairchild Semiconductor FDS8880
Vishay Si4386DY
International Rectifier IRF7821PBF
N9 1
n-channel MOSFET (SOT23)
Central Semi 2N7002, lead-free
DESIGNATION QTY DESCRIPTION
Q1 0 Not installed, npn transistor (SOT23)
Q2 0
Not installed, n-channel MOSFET
(SOT23)
R1 1 2.74kΩ ±1% resistor (0603)
R2 1 3.01kΩ ±1% resistor (0603)
R3, R6 2 51.1kΩ ±1% resistors (0603)
R4, R7 2 3.92kΩ ±1% resistors (0603)
R5 1 1.15kΩ ±1% resistor (0603)
R8 1 1.82kΩ ±1% resistor (0603)
R9 1 10kΩ ±5% resistor (0603)
R10 1 40.2kΩ ±1% resistor (0603)
R11, R13, R14,
R15, R35
0 Not installed, resistors (0603)
R12 1 0Ω resistor (0603)
R16, R41, R42,
R45, R46
0
Not installed, resistors (0603)
PCB short
R17, R18 2 10Ω ±1% resistors (0603)
R19, R33 2 10kΩ ±1% resistors (0603)
R37, R38 2 3Ω ±5% resistors (0805)
TP1, TP2 2 Test points
U1 1
Dual-output step-down controller
(20 QSOP)
Maxim MAX8664AEEP+
— 3 Shunts, 2-position
— 1 PCB: MAX8664 EVALUATION KIT+
Component Suppliers
SUPPLIER PHONE WEBSITE
Central Semiconductor Corp. 631-435-1110 www.centralsemi.com
Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com
International Rectifier 310-322-3331 www.irf.com
Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com
SANYO Electric Co., Ltd. 619-661-6835 www.sanyodevice.com
TDK Corp. 847-803-6100 www.component.tdk.com
TOKO America, Inc. 847-297-0070 www.tokoam.com
Vishay 402-563-6866 www.vishay.com
Note: Indicate that you are using the MAX8664 when contacting these component suppliers.