Click here for production status of specific part numbers. Evaluates: MAX20331/MAX20331A MAX20331 Evaluation Kit 7) Remove power supply from COM1, connect 1V General Description supply on COM2, and verify NC2 is now 1V. The MAX20331 evaluation kit (EV kit) is a fully assembled 8) Increase voltage on COM2. NC2 voltage goes and tested circuit board that demonstrates the MAX20331 down to 0V when COM2 voltage reaches about high-voltage OVP on audio line device. The EV kit comes 3.45V. with the MAX20331EWL+ installed. The MAX20331 EV kit can also be used to evaluate MAX20331A. 9) Decrease COM2 voltage. NC2 voltage again fol- lows COM2 voltage. Features 10) Set COM2 voltage to -1V and verify NC2 voltage 3.5mm Jack Audio Line Protection is -1V. Proven PCB Layout 11) Decrease COM2 voltage and verify NC2 voltage Fully Assembled and Tested goes up to 0V when COM2 voltage reaches about -3.45V. EV Kit Contents Detailed Description EV kit board containing a MAX20331 The MAX20331 EV kit is a fully assembled and tested circuit board demonstrating the MAX20331 audio line Quick Start overvoltage protector in a 9-bump wafer-level package (WLP). The MAX20331 has overvoltage threshold 3.45V. Required Equipment MAX20331 EV kit V Power Supply CC Two Power Supplies The V can be connected from USB power supply CC source or externally supplied from TP15. Multimeter Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation: Table 1. V Jumper Setting CC 1) Connect a 3V supply on TP15 and verify LED1 SHUNT JUMPER DESCRIPTION is on. POSITION 2) Connect a 1V supply on COM1 and verify NC1 1-2* V is connected to VEXT TP15 CC JU1 is now 1V. 2-3 V is connected to LDO Output CC 3) Increase voltage on COM1. NC1 voltage should *Default position. go down to 0V when COM1 voltage reaches about 3.45V. Ordering Information 4) Decrease COM1 voltage. NC1 voltage again fol- lows COM1 voltage. PART TYPE 5) Set COM1 voltage to -1V and verify NC1 voltage MAX20331EVKIT EVKIT is -1V. Denotes RoHS compliant. 6) Decrease COM1 voltage and verify NC1 voltage goes up to 0V when COM1 voltage reaches about -3.45V. 319-100226 Rev 1 2/19Evaluates: MAX20331/MAX20331A MAX20331 Evaluation Kit MAX20331 EV Kit Bill of Materials ITEM REF DES DNI/DNP QTY MFG PART MANUFACTURER VALUE DESCRIPTION COMMENTS C0603C104K9RAC CAPACITOR SMT (0603) CERAMIC CHIP 0.1UF 6.3V TOL = 10% 1 C1 1 KEMET MURATA 0.1UF GRM188R70J104KA01 MODEL = TG = -55C TO +125C TC = X7R C1608X5R1V225K080AC CAPACITOR SMT (0603) CERAMIC CHIP 2.2UF 35V TOL = 10% 2 C2, C3, C7 3 TDK MURATA 2.2UF GRM188R6YA225KA12 TG = -55C TO +85C TC = X5R CAPACITOR SMT (0603) CERAMIC CHIP 4.7UF 6.3V TOL=10% 3 C4 1 GRT188R60J475KE01 MURATA 4.7UF TG = -55C TO +85C TC = X5R AUTO CAPACITOR SMT (0603) CERAMIC CHIP 1000PF 50V TOL = 10% 4 C6 1 06035C102KAT2A AVX 1000PF TG = -55C TO +125C TC = X7R 5 D1, D2 2 RCLAMP1851ZA SEMTECH 18V DIODE TVS SMT VRM = 18V IPP = 3A CONNECTOR FEMALE SMT 6 J1, J2 2 SJ-43515TS-SMT CUI INC. SJ-43515TS-SMT 3.5 MM AUDIO JACKS TIP SWITCH RIGHT ANGLE 6PINS CONNECTOR FEMALE THROUGH HOLE 7 J3 1 10103594-0001LF FCI CONNECT 10103594-0001LF MICRO USB 2.0 B RECEPTACLE STD SMT PLUS DIP RIGHT ANGLE 5PINS 8 JU1 1 PEC03SAAN SULLINS PEC03SAAN CONNECTOR MALE THROUGH HOLE BREAKAWAY STRAIGHT 3PINS LUMEX DIODE LED STANDARD GREEN 9 LED1 1 SML-LX1206GW-TR SML-LX1206GW-TR OPTOCOMPONENTS INC SMT (1206) PIV = 2.2V IF = 0.02A -40C TO +85C RESISTOR THROUGH HOLE TRIMMING POTENTIOMETER 10 P1 1 3262W-1-504LF BOURNS 500K 500K 10% 100PPM 0.25W CRCW08050000ZS RESISTOR 0805 0 11 R1, R6 2 ERJ-6GEY0R00V RC2012J000 DIGI-KEY 0 JUMPER 0.125W THICK FILM RMCF0805ZT0R00 12 R2 1 RK73H2ATTD3300F KOA SPEER ELECTRONICS INC 330 RESISTOR 0805 330 1% 100PPM 0.25W THICK FILM CRCW0805100KFK VISHAY DALE 13 R3-R5 3 RK73H2ATTD1003 100K RESISTOR 0805 100K 1% 100PPM 0.125W THICK FILM KOA SPEER PANASONIC ERJ-6ENF1003V TP4, TP6, TP8, TEST POINT PIN DIA = 0.125IN TOTAL LENGTH = 0.445IN 14 5 5011 KEYSTONE N/A GND TP14, TP16 BOARD HOLE = 0.063IN BLACK PHOSPHOR BRONZE WIRE SILVER PLATE FINISH (TP3:COM1) TP3, TP5, TESTPOINT PINDIA = 0.125IN TOTALLENGTH = 0.445IN (TP5:COM2) 15 4 5014 KEYSTONE N/A TP7, TP9 BOARDHOLE = 0.063IN YELLOW PHOSPHOR BRONZE WIRE SILVER PLATE FINISH (TP7:NC1) (TP9:NC2) (TP11:DET1) TP11, TP12, TESTPOINT PINDIA = 0.125IN TOTAL LENGTH = 0.445IN BOARD HOLE = 0.063IN 16 3 5012 KEYSTONE N/A (TP12:DET2) TP13 WHITE PHOSPHOR BRONZE WIRE SILVER PLATE FINISH (TP13:SLV) (TP15:VEXT) TP15, TP17, 17 3 5010 KEYSTONE N/A TEST POINT WITH 1.80MM HOLE DIA, RED, MULTIPURPOSE NOT FOR COLD TEST (TP17:VCC) TP19 (TP19:VINT) EVKIT PART - IC MAX20331EWL+ HIGH VOLTAGE PROTECTION 3.5MM AUDIO LINE OVP 18 U1 1 MAX20331EWL+ MAXIM MAX20331EWL+ PACKAGE OUTLINE DRAWING: 21-100234 PACKAGE CODE: W91Q1+1 WLP9 19 U2 1 MAX8880EUT+ MAXIM MAX8880EUT+ IC VREG ULTRA-LOW-IQ LOW-DROPOUT LINEAR REGULATOR WITH POK SOT23-6 20 PCB 1 MAX20331 MAXIM PCB PCB:MAX20331 - 21 D3-D5 DNP 0 RCLAMP1851ZA SEMTECH 18V DIODE TVS SMT VRM=18V IPP=3A 22 C5 DNP 0 N/A N/A OPEN PACKAGE OUTLINE 0603 NON-POLAR CAPACITOR 23 R7-R9 DNP 0 N/A N/A OPEN PACKAGE OUTLINE 0805 RESISTOR TOTAL 38 Maxim Integrated 2 www.maximintegrated.com