MAX38903EVKIT#TDFN

Click here for production status of specific part numbers. MAX38903 TDFN Evaluation Kit Evaluates: MAX38903A/MAX38903B General Description Quick Start The MAX38903 TDFN evaluation kit (EV kit) evaluates the MAX38903A/MAX38903B IC family of low noise linear regulators. The EV kit operates over an input range of 1.7V to 5.5V and provides any output voltage range from 0.6V to 5.3V, and delivers up to 1A of current. The EV kit comes with the MAX38903BATB+ installed. Features ●● Evaluates the MAX38903A/MAX38903B IC in a 10-pin (3mm x 3mm) TDFN ●● 1.7V to 5.5V Input Range ●● 0.6V to 5.3V Resistor Configurable Output Voltage (MAX38903B, On Board with Output Set to 3.3V) ●● 1.2V to 5.0V Jumper Configurable Output Voltage (MAX38903A, with IC Replacement) ●● Up to 1A Output Current ●● Proven 2-Layer 1 oz Copper PCB Layout ●● Demonstrates Compact Solution Size ●● Fully Assembled and Tested Ordering Information appears at end of data sheet. Required Equipment ●● MAX38903 TDFN EV kit ●● 5.5V, 1A DC power supply ●● Electronic load capable of 1A ●● Digital voltmeter (DVM) Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on power supply until all connections are completed. 1) Verify that jumpers JU101, SELA and SELB are in their default positions, as shown in Tables 1, 2, and 3. 2) Connect the 5.5V power supply between the IN and nearest GND terminal posts. 3) Connect the 1A electronic load between the OUT and nearest GND terminal posts. 4) Connect the DVM between the OUT and nearest GND terminal posts. 5) Turn on the power supply. 6) Enable the electronic load. 7) Verify that the voltage at the OUT terminal post is approximately 3.3V. MAX38903 TDFN EV Kit Files FILE DECRIPTION MAX38903 TDFN EV Kit BOM EV Kit Bill of Material MAX38903 TDFN EV Kit PCB Layout EV Kit Layout MAX38903 TDFN EV Kit Schematic EV Kit Schematic 319-100262; Rev 0; 10/18 MAX38903 TDFN Evaluation Kit Detailed Description of Hardware The MAX38903 TDFN EV kit evaluates the MAX38903A/ MAX38903B IC family. The MAX38903A/MAX38903B are low noise linear regulators that deliver 1A of output current with only 12uVRMS of output noise from 10Hz to 100kHz. These regulators require only 100mV of input-tooutput headroom at full load. The MAX38903 TDFN EV kit operates over an input range of 1.7V to 5.5V. The EV Kit comes with the MAX38903BATB + installed and the output voltage is resistor configured to 3.3V and can deliver 1A of current. The output voltage on the MAX38903B can be reconfigured to other voltages from 0.6V to 5.3V by replacing feedback resistors R101 and R102. Refer to the MAX38903 IC data sheet for feedback resistor calculation. EN for the MAX38903A/B The EV kit provides a jumper JU101 to enable or disable the MAX38903B (or the MAX38903A after IC replacement). Refer to Table 1 for jumper setting of jumper JU101. GS for the MAX38903B When evaluating the MAX38903B, the Ground Sense (GS) pin must be connected to ground to stabilize the output with load. The EV kit provides a jumper SELA to connect the MAX38903B GS pin to ground. Refer to Table 2 for jumper setting of jumper SELA. POK for the MAX38903B The EV kit provides a test point to access the POK output signal from the MAX38903B. Remove shunt from jumper SELB to access the MAX38903B POK test point. Refer to Table 3 for jumper setting of jumper SELB. www.maximintegrated.com Evaluates: MAX38903A/MAX38903B Table 1. EN on MAX38903A/B (JU101) JU101 SHUNT POSITION DESCRIPTION 1-2* Enabled. EN = IN 2-3 Disabled. EN = GND *Default position. Table 2. GS on MAX38903B (SELA) SELA SHUNT POSITION DESCRIPTION 1-2 Not allowed (for MAX38903A output selection) 2-3* GS = GND *Default position. Table 3. POK on MAX38903B (SELB) SELA SHUNT POSITION DESCRIPTION 1-2 Not allowed (for MAX38903A output selection) 2-3 Not allowed (for MAX38903A output selection) Not Installed* Access signal at the POK test point *Default position. Maxim Integrated │  2 Evaluates: MAX38903A/MAX38903B MAX38903 TDFN Evaluation Kit Evaluating the MAX38903A The EV kit can evaluate the MAX38903A after IC (U1) replacement. When evaluating the MAX38903A, modify the EV kit with the steps listed below: 1) Replace U1 with the MAX38903AATB+. 2) Replace R101 with a 0Ω resistor. Output Selection (SELA and SELB) for the MAX38903A The EV kit provides a set of jumpers SELA and SELB to configure the output voltage of the MAX38903A, after IC (U1) replacement. Refer to Table 4 for jumper setting of jumpers SELA and SELB. 3) Remove R102. 4) Refer to Table 4 to configure the MAX38903A output voltage using jumpers SELA and SELB. Table 4. SELA and SELB on MAX38903A (SELA, SELB) SELA SELB OUTPUT VOLTAGE SHUNT POSITION SELA CONNECTION SHUNT POSITION SELB CONNECTION Not Installed Hi-Z 1-2 IN 1.2 1-2 IN Not Installed Hi-Z 1.5 Not Installed Hi-Z 2-3 GND 1.8 Not Installed Hi-Z Not Installed Hi-Z 2.5 2-3 GND 2-3 GND 3.0 2-3 GND 1-2 IN 3.1 2-3 GND Not Installed Hi-Z 3.3 1-2 IN 2-3 GND 4.0 1-2* IN 1-2* IN 5.0 *Default position. Component Suppliers SUPPLIER WEBSITE Murata/TOKO www.murata.com TDK www.tdk.com Samsung Electro-Mechanics America. Inc. www.samsungsem.com Note: Indicate that you are using the MAX38903A/B when contacting these component suppliers. Ordering Information PART TYPE MAX38903EVKIT#TDFN EV Kit #Denotes RoHS www.maximintegrated.com Maxim Integrated │  3 Evaluates: MAX38903A/MAX38903B MAX38903 TDFN Evaluation Kit MAX38903 TDFN EV Kit Bill of Materials ITEM 1 REF_DES C101 DNI/DNP - QTY 1 MFG PART # MANUFACTURER C0603C473K5RAC; GCM188R71H473K; GRM188R71H473K KEMET;MURATA; MURATA VALUE DESCRIPTION COMMENTS 0.047UF CAPACITOR; SMT (0603); CERAMIC CHIP; 0.047UF; 50V; TOL=10%; MODEL=X7R; TG=-55 DEGC TO +125 DEGC; TC= 10UF CAPACITOR; SMT (0603); CERAMIC CHIP; 10UF; 6.3V; TOL=20%; MODEL=CL SERIES; TG=-55 DEGC TO +125 DEGC; TC=X7R 2 C102, C103 - 2 CL10B106MQ8NRN SAMSUNG ELECTRONICS 3 GND, IN, OUT - 3 108-0740-001 EMERSON NETWORK POWER 108-0740-001 CONNECTOR; MALE; PANELMOUNT; BANANA JACK; STRAIGHT; 1PIN 4 GND_PAD, IN_PAD, OUT_PAD - 3 9020 BUSS WEICO WIRE MAXIMPAD EVK KIT PARTS; MAXIM PAD; WIRE; NATURAL; SOLID; WEICO WIRE; SOFT DRAWN BUS TYPE-S; 20AWG 5 JU101, SELA, SELB - 3 PEC03SAAN SULLINS PEC03SAAN CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 3PINS 6 POK - 1 N/A TEST POINT; PIN DIA=0.1IN; TOTAL LENGTH=0.3IN; BOARD HOLE=0.04IN; WHITE; PHOSPHOR BRONZE WIRE SILVER; 7 R101 - 1 CRCW0603909KFK VISHAY DALE 909K RESISTOR; 0603; 909K OHM; 1%; 100PPM; 0.1W; THICK FILM 8 R102 - 1 ERJ-3EKF2003 PANASONIC 200K RESISTOR; 0603; 200K OHM; 1%; 100PPM; 0.1W; THICK FILM 9 R103 - 1 CRCW0603100KFK VISHAY DALE 100K RESISTOR; 0603; 100K; 1%; 100PPM; 0.10W; THICK FILM TEST POINT; JUMPER; STR; TOTAL LENGTH=0.256IN; BLACK; INSULATION=PBT CONTACT=PHOSPHOR BRONZE; COPPER PLATED TIN OVERALL 131-4353-00 CONNECTOR;WIREMOUNT; CIRCUITBOARDTESTPOINTMINIAT UREPROBE;STRAIGHT;4PINS N/A TEST POINT; PIN DIA=0.1IN; TOTAL LENGTH=0.3IN; BOARD HOLE=0.04IN; BLACK; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH; N/A TEST POINT; PIN DIA=0.1IN; TOTAL LENGTH=0.3IN; BOARD HOLE=0.04IN; RED; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH; MAX38903BATB+ EVKIT PART-IC; PACKAGE CODE: T1033+1C; PACKAGE OUTLINE NUMBER: 21-0137 5002 KEYSTONE 10 SU1-SU3 - 3 STC02SYAN SULLINS ELECTRONICS STC02SYAN CORP. 11 TP1, TP6 - 2 131-4353-00 TEKTRONICS 12 TP_GND - 1 13 TP_OUT - 1 14 U1 - 1 5001 KEYSTONE 5000 KEYSTONE MAX38903BATB+ MAXIM 15 PCB - 1 MAX38903TDFN MAXIM PCB PCB:MAX38903TDFN 16 C104 DNP 0 N/A N/A OPEN PACKAGE OUTLINE 0603 NON-POLAR CAPACITOR 17 R104 DNP 0 N/A N/A OPEN PACKAGE OUTLINE 0603 RESISTOR 18 R105 DNP 0 N/A N/A SHORT PACKAGE OUTLINE 0603 RESISTOR TOTAL www.maximintegrated.com (TP1:IN) (TP6:OUT) - 25 Maxim Integrated │  4 www.maximintegrated.com 4 2 GND_IN 3 1 IN 131-4353-00 POK 10UF C102 108-0740-001 IN IN SELB PEC03SAAN MAXIMPAD GND 108-0740-001 GND OPEN R104 1.7V TO 5.5V SELA PEC03SAAN OPEN C104 PEC03SAAN JU101 4 R105 SHORT 5 3 2 1 SELA_GS EN GND IN IN U1 SELB_POK EP OUTS_FB BYP OUT OUT MAX38903BATB+ 11 MAXIMPAD 6 7 8 9 10 TP_GND TP_OUT 0.047UF C101 200K R102 R101 909K R103 100K 10UF C103 OUT MAXIMPAD OUT 2 3 GND_OUT 1 4 OUT 131-4353-00 108-0740-001 MAX38903 TDFN Evaluation Kit Evaluates: MAX38903A/MAX38903B MAX38903 TDFN EV Kit Schematic Maxim Integrated │  5 Evaluates: MAX38903A/MAX38903B MAX38903 TDFN Evaluation Kit MAX38903 TDFN EV Kit PCB Layout Diagrams 1” 1” MAX38903 EV Kit—Top Silkscreen MAX38903 EV Kit—Top 1” MAX38903 EV Kit—Bottom www.maximintegrated.com Maxim Integrated │  6 MAX38903 TDFN Evaluation Kit Evaluates: MAX38903A/MAX38903B Revision History REVISION NUMBER REVISION DATE 0 10/18 DESCRIPTION Initial release PAGES CHANGED — For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2018 Maxim Integrated Products, Inc. │  7