Evaluates: MAX17083 19-4647 Rev 0 5/09 MAX17083 Evaluation Kit General Description Features The MAX17083 evaluation kit (EV kit) is a fully assem- 2.4V to 5.5V Input Range bled and tested PCB that demonstrates the typical 5A Configured for 1.1V Output Voltage application circuit of the MAX17083. The MAX17083 is a Adjustable Output-Voltage Range (0.75V to 2.7V) DC-DC converter that steps down the systems 3.3V or 5V input supply for low-voltage, low-power applications. 5A Output Current The MAX17083 EV kit provides a 1.1V output voltage from 90% Efficiency (V = 3.3V, V = 1.1V at 2A) IN OUT a 2.4V to 5.5V input range. It delivers up to 5A output cur- 1MHz Switching Frequency rent while achieving greater than 90% efficiency. Pin-Selectable Four-Level Switching Frequency Programmed through jumper JU4, the EV kit operates at (500kHz, 750kHz, 1MHz, and 1.5MHz) 1MHz switching frequency and has superior line- and load-transient response. The EV kit also allows the evalua- Enable Input tion of other adjustable output voltages from 0.75V to Power-Good Output Indicator (POK) 2.7V, by varying the SET pin and changing resistors R3 Low-Profile Surface-Mount Components and R4. Lead(Pb)-Free and RoHS Compliant Fully Assembled and Tested Ordering Information PART TYPE MAX17083EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION D1 1 Green surface-mount LED (0805) 10F 10%, 10V X5R ceramic capacitors (0805) EN, POK 2 Test points C1, C2 2 Murata GRM21BR61A106K JU1, JU2 2 2-pin headers TDK C2012X5R0J106M JU3, JU4 2 4-pin headers 1F 10%, 6.3V X7R ceramic 1.0H, 6.8A, 14.2m inductor capacitors (0402) C3, C5 2 (5.8mm x 6.2mm x 3.0mm) Murata GRM155R61A105K L1 1 TOKO FDV0530-1R0M TDK C1005X5R0J105M NEC TOKIN MPLC0525L1R0 0.1F 10%, 16V X7R ceramic R1 1 100k 5% resistor (0603) capacitors (0402) C4, C6 2 R2 1 1k 5% resistor (0603) TDK C1005X5R1C104K Murata GRM155R71C104K R3 1 0 resistor (0402) C7 1 Not installed, POSCAP (D Case) Not installed, resistors (0402) R4, R9 0 R4 is open R9 is short (PCB trace) 0.1F 10%, 50V X7R ceramic capacitor (1206) 5A step-down regulator C8 0 Murata GRM319R71H104K U1 1 (24 TQFN) TDK C3216X7R1H104K Maxim MAX17083ETG+ 4 Shunts C9 0 Not ins tall ed , ceram i c capac i tor ( 0402) 1 PCB: MAX17083 EVALUATION KIT+ 220F, 6m , 2 V E S R PO S C AP ( D C ase) C20 1 S ANY O 2TPF2 20M 6 P anasoni c EE FSD 0E2 21R (7m , 2.5V) Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX17083 Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com NEC TOKIN America, Inc. 408-324-1790 www.nec-tokinamerica.com Panasonic Corp. 800-344-2112 www.panasonic.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 Note: Indicate that you are using the MAX17083 when contacting these component suppliers. Quick Start Detailed Description of Hardware Recommended Equipment Jumper Settings 2.4V to 5.5V DC power supply (VIN) Several jumper settings in the following tables illustrate some features of the MAX17083 EV kit. 5V DC power supply (VCC) Dummy load capable of sinking 5A VCC Bias Supply The MAX17083 EV kit can be configured to operate Digital multimeter (DMM) from a single DC power supply through configuration of 100MHz dual-trace oscilloscope jumper JU1. When a shunt is installed across JU1, VCC is powered from the VIN input through R9. When a Procedure shunt is not installed, the user must provide an addi- The MAX17083 EV kit is fully assembled and tested. tional power supply at the VCC pad. Table 1 lists the Follow the steps below to verify board operation. selectable jumper options. Caution: Do not turn on the power supply until all connections are completed. Enable Input 1) Ensure that the circuit is connected correctly to the The MAX17083 EV kit features a 2-pin jumper (JU2) that supplies and dummy load prior to applying any selects the shutdown control input. Table 2 lists the power. selectable jumper options. 2) Verify that shunts are not installed across JU1 and JU4 (1MHz). Table 1. Jumper JU1 Functions 3) Verify that a shunt is installed across JU2 JUMPER (enabled). VCC PIN VIN/VCC RANGE POSITION 4) Verify that a shunt is installed across JU3, pins 1-2 Connected to VIN VIN = 4.5 to 5.5V (V = 1.1V). OUT Installed through R9 VCC = VIN 5) Enable the power supplies (VIN and VCC). User-provided power at VIN = 2.4 to 5.5V 6) Observe the 1.1V output with the DMM and/or oscil- Not installed* VCC and PGND pads VCC = 4.5 to 5.5V loscope. Look at the LX switching node while vary- *Default position. ing the load current. Table 2. Jumper JU2 Functions JUMPER REGULATOR EN PIN POSITION OUTPUT Installed* Connected to VCC Enabled Not installed Pulled low through R1 Disabled *Default position. 2 Evaluates: MAX17083