General Description

The MAX6639 evaluation kit (EV kit) is an assembled and

tested PCB used to evaluate the MAX6639 dual tempera-

ture sensor/fan controller. The MAX6639 monitors its own

die temperature and the junction temperature of one

external diode-connected transistor, or the junction tem-

peratures of two external diode-connected transistors. It

converts the temperature to 8-bit or 11-bit 2-wire serial

data that can be accessed over a 2-wire serial bus.

The MAX6639 EV kit includes both external diode-connect-

ed transistors (2N3906) soldered to the board, which can

be bypassed to connect the board through a twisted pair

to remote diodes close to your system.

The temperature data is also used by the internal dual

PWM fan-speed controller to adjust the speed of up to

two cooling fans. Speed control is accomplished by

tachometer feedback from the fan.

simple user interface for exercising the features of the

MAX6639. The program is menu-driven and offers a

graphical user interface (GUI) complete with control but-

tons. The EV kit comes with the MAX6639AEE+ installed.

Contact the factory for free samples of the pin-compatible

MAX6639FAEE+ and MAX6640AEE+.

The MAX6639 EV kit also evaluates the MAX6640. The

MAX6640 is not recommended for new designs.

Features

o Two Thermal-Diode Inputs

o Local Temperature Sensor

o Programmable Temperature Alarms

o Two PWM Outputs for Fan Drive

o Up to 25kHz PWM Output Frequency

o Programmable Fan-Control Characteristics

o 3-Wire and 4-Wire Fan Configurations

o On-Board Microcontroller to Generate

o USB-PC Connection (Cable Included)

o Windows 2000/XP- and Windows Vista

(32-Bit)-Compatible Software

o Easy-to-Use, Menu-Driven Software

o Lead(Pb)-Free and RoHS Compliant

o Fully Assembled and Tested

MAX6639 Evaluation Kit

________________________________________________________________

Maxim Integrated Products

1

19-4448; Rev 0; 1/09

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, C12, C14

3

10µF ±10%, 16V X5R ceramic

capacitors (0805)

Murata GRM21BR61C106K

C2, C3

2

22pF ±5%, 50V C0G ceramic

capacitors (0603)

Murata GRM1885C1H220J

C4

1

0.033µF ±10%, 25V X7R ceramic

capacitor (0603)

TDK C1608X7R1E333K

C5–C10 , C17,

C18, C19

9

0.1µF ±10%, 16V X7R ceramic

capacitors (0603)

TDK C1608X7R1C104K

C11, C13, C22

3

1µF ±10%, 16V X5R ceramic

capacitors (0603)

TDK C1608X5R1C105K

C15, C16

2

10pF ±5%, 50V C0G ceramic

capacitors (0603)

Murata GRM1885C1H100J

DESIGNATION

QTY

DESCRIPTION

C20, C21

2

2200pF ±10%, 50V X7R ceramic

capacitors (0603)

Murata GRM188R71H222K

D1, D2, D3

3

Red LEDs (0603)

D4

1

Green LED (0603)

H1

0

Not installed, dual-row (2 x 5)

10-pin JTAG header

J1, J2

2

3-pin headers, 0.1in pitch, vertical,

friction lock

J3, J4

2

4-pin headers, 0.1in pitch, vertical,

friction lock

JU1–JU7

7

3-pin headers

JU8–JU13

0

Not installed, 2-pin headers—shorted

by PCB trace

L1

1

Ferrite bead (0603)

TDK MMZ1608R301A

PART

TYPE

MAX6639EVKIT+

EV Kit

+

Denotes lead(Pb)-free and RoHS compliant.

Windows and Windows Vista are registered trademarks of

Microsoft Corp.

SMBus is a trademark of Intel Corp.