MAX8550_0411 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – Evaluation Kit

19-3436; Rev 1; 11/04
MAX8550 Evaluation Kit
General Description
The MAX8550 evaluation kit (EV kit) is designed to evalu-
ate the MAX8550 DDR power-supply solution for note-
books, desktops, and graphics cards. The EV kit board
produces VDDQ at the output of the synchronous PWM
buck, VTT at the output of the sourcing/sinking LDO linear
regulator, and VTTR at the output of the reference buffer.
The VDDQ output is preset to 2.5V and sources up to
12A. The VTT output is always VDDQ/2 and can
source/sink up to 3A of peak current and 1.5A of contin-
uous current. The VTTR output is also always VDDQ/2
and can source/sink up to 10mA.
The MAX8550 EV kit was conveniently designed with
jumpers to select the OVP/UVP, TON, SKIP, STBY, and
SHDN_ modes. The board’s default settings enable
OVP (overvoltage protection), 600kHz switching fre-
quency, low-noise PWM mode, VDDQ, VTT, and VTTR.
The VIN input accepts voltages from 9V to 20V and
VDD requires a 5V bias supply.
The EV kit comes with the MAX8550 installed. Contact
the factory for free samples of the MAX8550A or
MAX8551 to evaluate these parts.
Features
♦ VDDQ Preset to 2.5V/12A
♦ VTT 1.25V Source/Sink 1.5A Continuous/3A Peak
♦ VTTR 1.25V Source/Sink 10mA
♦ VIN Range: 9V to 20V
♦ Optimized Switching Frequency: 600kHz
♦ Overvoltage/Undervoltage Protection
♦ Standby
♦ Independent Shutdown
♦ Power OK
Ordering Information
PART
TEMP RANGE
IC PACKAGE
MAX8550EVKIT 0°C to +70°C 28 Thin QFN 5mm x 5mm
Note: To evaluate the MAX8550A, request a free sample of the
MAX8550AETI when ordering the MAX8550 EV kit. To evaluate
the MAX8551, request a free sample of the MAX8551ETI when
ordering the MAX8550 EV kit.
DESIGNATION QTY
DESCRIPTION
0.1µF ±10%, 50V X7R ceramic
C1
1 capacitor (0603)
TDK C1608X7R1H104K
C2, C4A, C4B,
C4C, C4D,
C4E, C4F
10µF ±10%, 6.3V X5R ceramic
7
capacitors (1206)
TDK C3216X5R0J106K or
TDK C3216X5R0J106M
C3, C6, C13
1µF ±10%, 10V X5R ceramic
3 capacitors (0603)
TDK C1608X5R1A105K
4.7µF ±20%, 6.3V X5R ceramic
C5
1 capacitor (0805)
TDK C2012X5R0J475M
C7, C10
0.22µF ±20%, 16V X7R ceramic
2 capacitors (0603)
TDK C1608X7R1C224M
10µF ±20%, 25V X5R ceramic
C8A, C8B, C8C
3
capacitors (1210)
Taiyo Yuden TMK325BJ106MM
TDK C3225X5R1E106M
Component List
DESIGNATION QTY
DESCRIPTION
C8D
Not installed
0
470µF ±20%, 25V aluminum
electrolytic capacitor (10mm x 16mm)
Sanyo 25MV470WX
C9
C11, C12
C14
C15, C16
D1
JU1, JU2
JU3–JU6
3900pF, 50V X7R ceramic capacitor
1 (0603)
Kemet C0603C392K5RAC
150µF, 4V, 25mΩ low-ESR POS
2 capacitors (D2E)
Sanyo 4TPE150M
470pF ±5%, 50V COG ceramic
1 capacitor (0603)
TDK C1608COG1H471J
2 Not installed (0603)
1
Schottky diode, 30V, 100mA (SOD-323)
Central CMDSH-3
2 4-pin headers
4 3-pin headers
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