Evaluates: MAX8903AMAX8903E/MAX8903Y 19-4413 Rev 2 10/10 MAX8903A Evaluation Kit General Description Features The MAX8903A evaluation kit (EV kit) is a fully assem- DC-DC Converter Output Current-Limit bled and tested circuit board for evaluating the 2A, 1-cell Adjustment Range of 0.5A to 2A (EV Kit Standard Li+ DC-DC battery charger. The EV kit charges a sin- Configuration: 2A) gle-cell lithium-ion (Li+) battery from a DC input (AC Battery Charger Current-Limit Adjustment Range adaptor) or a USB 100mA/500mA source and provides system power from the DC input, USB input, or battery. of 0.5A to 2A (EV Kit Standard Configuration: 1A) Battery charge current and SYS current limit are inde- USB Current Limit of 100mA or 500mA pendently set. Charge current and DC converter output current limit can be set up to 2A, respectively. The USB Efficient 4MHz Switching DC-DC Converter input current can be set to 100mA or 500mA and USB Powers System Load and Charger suspend mode is also supported. Power not used by Instant OnWorks with No Battery or Low the system is available to charge the battery. Battery The EV kit comes standard with the MAX8903A 28-Pin, 4mm x 4mm Thin QFN Package with installed. However, the EV kit can also be used to evalu- ate the MAX8903BMAX8903E and MAX8903Y by Exposed Pad replacing the MAX8903A (U1) with the preferred IC. Fully Assembled and Tested Ordering Information PART TYPE MAX8903AEVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant Component List DESIGNATION QTY DESCRIPTION 2.2F 10%, 16V X5R ceramic capacitor (0805) C1 1 TDK C2012X7R1C225K or equivalent 4.7F 10%, 25V X5R ceramic capacitor (0805) C2 1 Murata GRM21BR61E475KA12L or equivalent 10F 10%, 10V X5R ceramic capacitors (0805) C3A, C4 2 Taiyo Yuden LMK212BJ106KG or equivalent 0.1F 10%, 10V X7R ceramic capacitors (0402) C5, C7 2 TDK C1005X5R1A104K or equivalent 2.2F 10%, 6.3V X5R ceramic capacitor (0603) C6 1 Figure 1. MAX8903A EV Kit Photo Taiyo Yuden LMK107BJ225MA or equivalent 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.MAX8903A Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION C8, C9, C11 0 Not installed, capacitors (0402) 1H, 2.8A, 54m inductor (4.1mm x 4.1mm x 1.2mm) 4.7F 10%, 16V X5R ceramic L1 1 TOKO A1101AS-1R0 (DEA4012CK capacitor (0805) C10 1 series) Taiyo Yuden EMK212BJ475K or equivalent 100k NTC thermistor (0402) NTC 0 Murata NCP15WF104J03RC Small green LEDs D1, D3, D4 3 Panasonic LNJ308G8PRA R1R4 4 2.2k 5% resistors (0402) R5 1 100k 1% resistor (0402) Small red LED D2 1 Panasonic LNJ208R8ARA R6, R10, R14, 0 Not installed, resistors (0402) R17, R18 USB type-AB right-angle mini jacks J1, J2 2 Molex 56579-0576 R7, R8 2 3.01k 1% resistors (0402) R9 1 6.04k 1% resistor (0402) 2.1mm male power connector J3 1 CUI Inc. PJ-002A-SMT R11, R12 2 604 1% resistors (0402) R13 1 1.21k 1% resistor (0402) 1.25mm (0.049in) surface-mount, right-angle pitch header, lead-free, 0.56 1% resistor (0603) J4 1 R15 1 10 circuits Panasonic ERJ-3RQJR56V Molex 53261-1071 1-cell Li+ charger (28 TQFN-EP*) U1 1 3-pin headers Maxim MAX8903AETI+ JU1, JU2, JU3, 5 Sullins PEC36SAAN JU8, JU9 Shunts (see Table 1) Digi-Key S1012E-36-ND 10 Digi-Key S900-ND or equivalent 2-pin headers JU4JU7, 1P C B: MAX 8903A E V ALU ATION KIT+ Sullins PEC36SAAN 6 JU10, JU11 *EP = Exposed pad. Digi-Key S1012E-36-ND Component Suppliers SUPPLIER PHONE WEBSITE CUI Inc. 503-612-2300 www.cui.com Digi-Key Corp. 800-344-4539 www.digikey.com Molex 800-768-6539 www.molex.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Panasonic Corp. 800-344-2112 www.panasonic.com Sullins Electronics Corp. 760-744-0125 www.sullinselectronics.com Taiyo Yuden 800-348-2496 www.t-yuden.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 MAX8903 when contacting these component suppliers. 2 Evaluates: MAX8903AMAX8903E/MAX8903Y