Evaluates: MAX16825 19-4052 Rev 0 2/08 MAX16825 Evaluation Kit General Description Features The MAX16825 evaluation kit (EV kit) demonstrates a Operates from a 6.5V to 28V, 0.5A Supply high-voltage, 3-channel, linear high-brightness LED (HB LED) driver using the MAX16825 IC. This EV kit is config- 3 Channels for Driving High-Brightness LEDs ured to supply an LED current of 100mA per channel and 100mA LED Current per Channel operates from a 0.5A, 6.5V to 28V rated power supply. The MAX16825 EV kit uses a standard 4-wire SPI Evaluates a Stand-Alone 4-Wire SPI Interface interface for independently controlling each of the three USB-PC Interface (Cable Included) LED channels. The MAX16825 EV kit also integrates a USB-to-SPI interface circuit based on Maxims Windows 2000/XP/Vista (32-Bit)-Compatible MAXQ2000 microcontroller. The EV kit includes Software Windows 2000/XP/Vista -compatible software that pro- vides a simple graphical user interface (GUI) for exer- Fully Assembled and Tested cising the features of the MAX16825. The EV kit can also interface with a user-supplied SPI circuit for stand- alone operation. Ordering Information PART TYPE MAX16825EVKIT+ EV Kit +Denotes lead-free and RoHS-compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 0.1F 10%, 16V X7R ceramic Green LED (0603) D1 1 C1, C3C10, C17 10 capacitors (0603) Panasonic LNJ314G8TRA TDK C1608X7R1C104K Not installed, ferrite-bead inductor FB1 0 10F 20%, 6.3V X5R ceramic (0603) C2, C13, C15 3 capacitors (0805) Not installed, dual-row (2 x 5) 10- H1, J1 0 TDK C2012X5R0J106M pin headers 10pF 5%, 50V C0G ceramic Not installed, dual-row (2 x 4) 8- J2 0 C11, C12 2 capacitors (0603) pin header TDK C1608C0G1H100J USB type-B right-angle female P1 1 1F 10%, 10V X5R ceramic receptacle C14, C16, C22 3 capacitors (0603) R1 1 0 5% resistor (0603) Murata GRM188R61A105K R2 1 220 5% resistor (0603) 22pF 5%, 50V C0G ceramic R3 1 10k 5% resistor (0603) C18, C19 2 capacitors (0603) R4 1 2.2k 5% resistor (0603) TDK C1608C0G1H220J R5 1 1.5k 5% resistor (0603) 3300pF 10%, 50V X7R ceramic R6, R7 2 27 5% resistors (0603) C20 1 capacitor (0603) 2 1%, 0.25W sense resistors TDK C1608X7R1H332K R8, R9, R10 3 (1206) 1F 10%, 50V X7R ceramic IRC WCR-WCR1206LF-2R00-F capacitor (1210) C21 1 R11 0 Not installed, resistor (0402) Murata GRM32ER71H105K or TDK C3325X7R1H105K SPI is a trademark of Motorola, Inc. Windows Vista is a registered trademark of Microsoft Corp. Maxim Integrated Products 1 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.MAX16825 Evaluation Kit Component List (continued) Component Suppliers DESIGNATION QTY DESCRIPTION SUPPLIER PHONE WEBSITE SPI-controlled linear HB LED IRC, Inc. 361-992-7900 www.irctt.com U1 1 driver (16-pin TSSOP-EP*) Murata Mfg. Co., 770-436-1300 www.murata.com Maxim MAX16825AUE+ Ltd Low-power 16-bit microcontroller Panasonic 800-344-2112 www.panasonic.com (68-pin QFN-EP*, 10mm x 10mm) U2 1 TDK Corp. 847-803-6100 www.component.tdk.com Maxim MAXQ2000-RAX+ Note: Indicate that you are using the MAX16825 when contact- 93C46 type 3-wire EEPROM U3 1 ing these component suppliers. (8-pin SO) UART-to-USB converter U4 1 (32-pin TQFP, 7mm x 7mm) MAX16825 EV Kit Files 3.3V regulator (5-pin SC70) FILE DESCRIPTION U5 1 Maxim MAX8511EXK33+T (Top Mark: AEI) Installs the EV kit files on INSTALL.EXE 2.5V regulator (5-pin SC70) your computer Maxim MAX8511EXK25+T U6 1 MAX16825.EXE Application program (Top Mark: ADV) FTD2XX.INF USB device driver file Y1 1 16MHz crystal Uninstalls the EV kit Y2 1 6MHz crystal UNINST.INI software 1 USB high-speed A-to-B cable, 6ft USB driver installation help 1 PCB: MAX16825 Evaluation Kit+ TROUBLESHOOTING USB.PDF file *EP = Exposed paddle. 1) Visit www.maxim-ic.com/evkitsoftware to download Quick Start the latest version of the EV kit software, Required Equipment 16825Rxx.ZIP. Save the EV kit software to a tempo- Before beginning, the following equipment is needed: rary folder and uncompress the ZIP file. MAX16825 EV kit (USB cable included) 2) Install the EV kit software on your computer by run- ning the INSTALL.EXE program inside the tempo- 6.5V to 28V, 0.5A adjustable DC power supply rary folder. The program files are copied and icons User-supplied Windows 2000/XP/Vista PC with a are created in the Windows Start Programs spare USB port menu. All EV kit files are automatically installed. Three LED loads, each rated as follows: 3) Set the power-supply output to over V + 1.7V. FLED Current rating 100mA 4) Disable the power-supply output. Total LED string forward voltage V 26.3V FLED 5) Connect the power-supply ground to the GND pad See the LED Load Configuration section for more next to the VIN pad. information 6) Connect the power-supply positive output to the Note: In the following sections, software-related items VIN pad. are identified by bolding. Text in bold refers to items directly from the EV kit software. Text in bold and 7) Connect one LED load anode to each LED output underlined refers to items from the Windows operat- pad (LED1+, LED2+, or LED3+). ing system. 8) Connect each LED load cathode to the correspond- ing LED input pad (LED1-, LED2-, or LED3-). Procedure The MAX16825 EV kit is fully assembled and tested. 9) Connect the USB cable from the PC to the EV kit Follow the steps below to verify board operation. board. A New Hardware Found window pops up Caution: Do not turn on the power supply until all when installing the USB driver for the first time. If connections are completed. you do not see a window that is similar to the one 2 Evaluates: MAX16825