MAX15101/MAX15102 /MAX15103 Evaluation Kits Evaluate: MAX15101/MAX15102 /MAX15103 General Description Features The MAX15101/MAX15102/MAX15103 evaluation kits S 1.7V to 5.5V Input Voltage Range (EV kits) provide a proven design to evaluate the S Output Current MAX15101/MAX15102/MAX15103 small, low-dropout 1A for MAX15101 linear regulators capable of delivering up to 1A, 2A, or 2A for MAX15102 3A in a wafer-level package (WLP). The EV kits are preset for 1.5V output at load currents of 1A for the MAX15101, 3A for MAX15103 2A for the MAX15102, and 3A for the MAX15103. The EV S Output Voltage Range: 0.6V Up to (V - 200mV) IN kits offer an enable input and power-good output and are S 200mV Dropout Guaranteed at 3A capable of operating from a 1.7V to 5.5V supply. Refer to the Operating Region and Power Dissipation section in S Enable Input/Power-Good Output the respective IC data sheet when operating at the higher S Proven PCB Layout end of the input supply range. S Fully Assembled and Tested Ordering Information appears at end of data sheet. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION Not installed, ceramic capacitors 2.2FF Q10%, 10V X7R ceramic C5, C7 0 (0805) C1 1 capacitor (0603) TDK C1608X5R1A225M Not installed, ceramic capacitors C6, C8 0 (1206) 22FF Q10%, 6.3V X5R ceramic JU1 1 2-pin header capacitor (0603) C2 1 Samsung CL10A226MQ8NRNE R1 1 909I Q1% resistor (0603) Taiyo Yuden R2 1 604I Q1% resistor (0603) AMK107BBJ226MA-T R5, R7 2 100kI Q5% resistors (0603) R6 0 Not installed, resistor (0603) 0.1FF Q10%, 50V X7R ceramic capacitor (0603) See the EV Kit-Specific C3 1 U1 1 Murata GRM188R71H104K Component List TDK C1608X7R1H104K 1 Shunt PCB: MAX15101/2/3 Not installed, aluminum 1 EVALUATION KIT C4 0 electrolytic capacitor (12.5mm x 25mm) EV Kit-Specific Component List PART DESIGNATION DESCRIPTION 1A low-dropout linear regulator (15 WLP) MAX15101EVKIT Maxim MAX15101EWL+T 2A low-dropout linear regulator (15 WLP) MAX15102EVKIT U1 Maxim MAX15102EWL+T 3A low-dropout linear regulator (15 WLP) MAX15103EVKIT Maxim MAX15103EWL+T For pricing, delivery, and ordering information, please contact Maxim Direct at 19-6022 Rev 0 9/11 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com.MAX15101/MAX15102 /MAX15103 Evaluation Kits Evaluate: MAX15101/MAX15102 /MAX15103 Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Samsung Electro-Mechanics 949-797-8047 www.sem.samsung.com Taiyo Yuden 800-348-2496 www.t-yuden.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX15101, MAX15102, or MAX15103 when contacting these component suppliers. Table 1. Regulator Enable (EN) Jumper Quick Start JU1 Description Recommended Equipment SHUNT MAX15101, MAX15102, or MAX15103 EV kit EN PIN DEVICE OUTPUT POSITION 1.7V to 5.5V, 3A DC power supply Installed* Connected to IN Enabled Load capable of sinking up to 3A Pulled to GND Not installed Disabled Digital voltmeter through R7 *Default position. Procedure The EV kits are fully assembled and tested. Follow the steps below to verify the board operation. Caution: Do Bypass /Soft-Start Input (SS BYP) not turn on power supply until all connections are The MAX15101/MAX15102/MAX15103 utilize an adjust- completed. able soft-start function to limit inrush current during 1) Connect the positive terminal of the 5V supply to the startup and reduce the output noise. The soft-start time IN PCB pad and the negative terminal to the nearest is adjusted by the value of C3, the external capacitor PGND PCB pad. from SS BYP to GND. By default, C3 is currently 0.1FF, which gives a soft-start time of approximately 6.5ms. To 2) Connect the positive terminal of the load to the OUT determine the soft-start time, determine t using the fol- PCB pad and the negative terminal to the nearest SS lowing formula: PGND PCB pad. 3) Connect the digital voltmeter across the OUT PCB -5 t = 6.31510 C3 SS pad and the nearest PGND PCB pad. 4) Verify that a shunt is installed on jumper JU1. where t is the required soft-start time in seconds and SS C3 is in nanofarads. C3 should be a minimum 4.7nF 5) Turn on the DC power supply. capacitor between SS BYP and GND. 6) Enable the load. Setting the Output Voltage 7) Verify that the voltmeter displays 1.5V. The EV kit can be adjusted from 0.6V up to V - 200mV IN by changing the values of resistors R1 and R2. To deter- Detailed Description of Hardware mine the value of the resistor-divider, set R2 to 604I, and then use the following equation to calculate R1: Regulator Enable (EN) The MAX15101/MAX15102/MAX15103 feature an enable R1 R2 V / V 1 ( ) input. For normal operation, a shunt should be installed OUT FB on jumper JU1. To disable the output, remove the shunt where V is equal to the 0.6V and V is the output. on JU1 and the EN pin is pulled to GND through resistor FB OUT R7. See Table 1 for JU1 settings. Maxim Integrated 2 =