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General Description

The MAX1739 evaluation system (EV system) consists

of a MAX1739 evaluation kit (EV kit) and a companion

Maxim SMBus™ interface board.

The MAX1739 EV kit is an assembled and tested PC

board that demonstrates the MAX1739 wide brightness

range cold-cathode fluorescent lamp (CCFL) backlight

controller. The EV kit can control the brightness of a

user-supplied lamp through either the SMBus interface

or by an on-board potentiometer. Figure 1 shows the

MAX1739 EV kit main display.

The Maxim SMBus interface board (MAXSMBUS) allows

an IBM-compatible PC to use its parallel port to emulate

an Intel system management bus (SMBus) 2-wire inter-

face. Windows 95/98

-compatible software provides a

user-friendly interface to exercise the features of the

MAX1739. The program is menu driven and offers a

graphic interface with control buttons and status display.

Order the MAX1739EVSYS for a complete PC-based

evaluation of the MAX1739. Order the MAX1739EVKIT if

you already have an SMBus interface.

Features

♦ Wide Brightness Adjustment Range

♦ Open Lamp Protection with 2s Timeout

♦ “Buck” Switch and Other Single-Point Fault

Protection

♦ Brightness Adjustable Through SMBus Interface

or On-Board Potentiometer

♦ No Flicker at Low Brightness

♦ High Power to Light Efficiency

♦ I

C™/SMBus Compatible

♦ Easy-to-Use Menu-Driven Software

♦ Assembled and Tested

♦ Includes: Windows 95/98-Compatible Software

(3.5in Floppy Disk)

Demo PC Board

Evaluates: MAX1739

MAX1739 Evaluation System/

Evaluation Kit

________________________________________________________________ Maxim Integrated Products 1

19-2114; Rev 0; 7/01

MAX1739EVSYS Component List

Ordering Information

Note: The MAX1739 EV kit software is provided with the

MAX1739EVKIT. However, to use the software, the MAXSMBUS

board is required to interface the EV kit to the computer.

PART

QTY

DESCRIPTION

MAX1739EVKIT

1 MAX1739 EV kit

MAXSMBUS 1 SMBus interface board

PART

SMBUS

INTERFACE TYPE

IC PACKAGE

MAX1739EVKIT

Not included 20 QSOP

MAX1739EVSYS

MAXSMBus 20 QSOP

SUPPLIER PHONE FAX

Fairchild

408-822-2000

408-822-2102

General

Semiconductor

631-847-3000

631-847-3236

Motorola

303-675-2140

303-675-2150

Murata

814-237-1431

814-238-0490

Nihon

805-867-2555

805-867-2698

Panasonic

201-392-7522

201-392-4441

Sumida

847-956-0666

847-956-0702

Taiyo Yuden

408-573-4150

408-573-4159

Toshiba

949-455-2000

949-859-3963

Diodes Inc.

805-446-4800

805-446-4850

WIMA

914-347-2474

914-347-7230

Component Suppliers

Note: Please indicate you are using the MAX1739 when con-

tacting these component suppliers.

SMBus is a trademark of Intel Corp.

Windows is a registered trademark of Microsoft Corp.

C is a trademark of Philips Corp.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Summary of content (7 pages)

PAGE 1
9-2114; Rev 0; 7/01 MAX1739 Evaluation System/ Evaluation Kit Features ♦ Wide Brightness Adjustment Range The MAX1739 EV kit is an assembled and tested PC board that demonstrates the MAX1739 wide brightness range cold-cathode fluorescent lamp (CCFL) backlight controller. The EV kit can control the brightness of a user-supplied lamp through either the SMBus interface or by an on-board potentiometer. Figure 1 shows the MAX1739 EV kit main display.
PAGE 2
MAX1739 Evaluation System/ Evaluation Kit Evaluates: MAX1739 MAX1739EVKIT Component List DESIGNATION QTY DESCRIPTION C1, C2, C5 3 0.1µF, 16V X7R ceramic capacitors Taiyo Yuden EMK107BJ104KA Murata GRM39X7R104K016 C3 1 3300pF, 50V X7R ceramic capacitor 1 0.47µF, 16V X7R ceramic capacitor Taiyo Yuden EMK212BJ474KG Murata GRM40X7R474K016 C4 C6 C7 1 1 22pF, 3.1kV ceramic high-voltage capacitor Murata GHM1038-SL-220J-3K 0.
PAGE 3
MAX1739 Evaluation System/ Evaluation Kit BATT REF R2 49.9kΩ 1% C9 4.7µF GND 4 JU3 1 3 VIN 20 C1 0.1µF REF R1 49.9kΩ 1% 2 MINDAC 2 DH 19 N1 U1 VL 3 MAX1739 CCI LX C5 0.1µF VL 4 T1 D2 5 3 VL 1 JU5 2 VL CRF/SDA C7 0.1µF 15 GND SMBCLK 1 2 CTL/SCL 16 C4 0.47µF 6 3 SMBDATA R8 10kΩ SH/SUS R9 10kΩ JU2 CRF/SDA C6 22pF BST C3 3300pF 1 JU4 2 SH/SUS D1 17 CCV SMBSUS HIGH VOLTAGE L1 47µH 18 C2 0.
PAGE 4
Evaluates: MAX1739 MAX1739 Evaluation System/ Evaluation Kit Quick Start Required Equipment Before you begin, you will need the following equipment: • An IBM PC-compatible computer running Windows 95/98 • A parallel printer port (25-pin socket on the back of the computer) • A standard 25-pin, straight-through, male-to-female cable to connect the computer’s parallel port to the Maxim SMBus interface board • A DC power supply capable of supplying any voltage between +7V to +20V at 100mA to power the SMB
PAGE 5
MAX1739 Evaluation System/ Evaluation Kit SH /SUS SHMD2 SHMD1 SHMD0 0 0 X 0 Operate Shutdown Status1 set OPERATING MODE 0 0 X 1 1 0 0 X Operate 1 0 1 X Shutdown Status1 set X 1 X X Shutdown Status1 set Simple SMBus Commands Jumper JU3 There are two methods for communicating with the MAX1739: through the normal user-interface panel or through the SMBus commands available from pressing the MAXSMBUS button.
PAGE 6
Evaluates: MAX1739 MAX1739 Evaluation System/ Evaluation Kit Table 2. Jumper Settings Description JUMPER JU1 JU2 JU3 JU4 SHUNT LOCATION 1-2 MODE = REF (negative-scale ADC mode), CTL/SCL = 0 results in maximum brightness. 1-3 MODE = GND (positive-scale ADC mode), CTL/SCL = 0 results in minimum brightness. 1-4 MODE = VL. Enable SMBus interface. Open Used for ADC mode. Drive CRF/SDA with an external voltage. The external voltage is the reference input voltage for the ADC.
PAGE 7
MAX1739 Evaluation System/ Evaluation Kit Evaluates: MAX1739 1.0" Figure 3. MAX1739 EV Kit Component Placement Guide—Component Side 1.0" Figure 4. MAX1739 EV Kit PC Board Layout—Component Side 1.0" Figure 5. MAX1739 EV Kit PC Board Layout—Solder Side Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.