MAX38902EVKIT# Analog Devices

Evaluates: MAX38902A/B/C/D MAX38902 Evaluation Kit General Description MAX38902 EV Kit Files The MAX38902 evaluation kit (EV kit) evaluates FILE DESCRIPTION the MAX38902A/B/C/D IC family of low noise linear MAX38902 EV BOM EV Kit Bill of Material regulators. The MAX38902 EV kit features two independent circuits to evaluate two different IC MAX38902 EV PCB Layout EV Kit Layout packages of the MAX38902A/B/C/D family. Both circuits MAX38902 EV Schematic EV Kit Schematic on the EV kit operate over an input range of 1.7V to 5.5V, and provide any output voltage range of 0.6V to 5.3V. MAX38902 EV Minimal Minimal Component Circuit Component Schematic The TDFN circuit evaluates the MAX38902A/B, while the wafer-level package (WLP) circuit evaluates the MAX38902C/D. Each circuit output on the EV kit delivers Quick Start up to 500mA of current. Required Equipment The EV kit comes with the MAX38902A-ATA+ and the MAX38902 EV kit MAX38902C-ANT+ installed. 5.5V, 1A DC power supply Features Electronic load capable of 500mA Two Independent Circuits on One Board Digital voltmeter (DVM) Evaluates the MAX38902A/B IC in an 8-pin (2mm x 2mm) TDFN Procedure Testing the (WLP) OUT1 Output Circuit Evaluates the MAX38902C/D IC in a 6-ball (1.45mm x 0.86mm) WLP The EV kit is fully assembled and tested. Follow the steps below to verify board operation. 1.7V to 5.5V Input Range Caution: Do not turn on power supply until all con- 1.2V to 5.0V Jumper Configurable Output Voltage nections are completed. (MAX38902A, On Board) 1) Verify that jumper JU1 is in its default position as 0.6V to 5.3V Resistor Configurable Output Voltage shown in Table 1. (MAX38902B, with IC Replacement) 2) Connect the 5.5V power supply between the IN1 and 0.6V to 5.3V Resistor Configurable Output Voltage nearest GND1 terminal posts. (MAX38902C, On Board) 3) Connect the 500mA electronic load between the 1.2V to 5.0V Factory-Preset Output Voltage OUT1 and nearest GND1 terminal posts. (MAX38902D, with IC Replacement) 4) Connect the DVM between the OUT1 and nearest Up to 500mA Output Current GND1 terminal posts. Proven 2-Layer 1-oz Copper PCB Layout 5) Turn on the power supply. Demonstrates Compact Solution Size 6) Enable the electronic load. Fully Assembled and Tested 7) Verify that the voltage at the OUT1 terminal post is approximately 3.3V. Ordering Information appears at end of data sheet. 319-100100 Rev 0 11/17Evaluates: MAX38902A/B/C/D MAX38902 Evaluation Kit The MAX38902 EV kit features two independent circuits Procedure to evaluate two different IC packages of the MAX38902A/ Testing the (TDFN) OUT Output Circuit B/C/D family. Both circuits on the EV kit operate over an The EV kit is fully assembled and tested. Follow the steps input range of 1.7V to 5.5V. The TDFN circuit evaluates below to verify board operation. the MAX38902A/B, while the WLP circuit evaluates the Caution: Do not turn on power supply until all con- MAX38902C/D. Each circuit output on the EV kit delivers nections are completed. up to 500mA of current. 8) Verify that jumpers JU101, SELA and SELB are in The MAX38902 (TDFN) circuit on the EV Kit comes with their default positions, as shown in Table 2 and Table 3. the MAX38902A-ATA+ installed and the output is jumper 9) Connect the 5.5V power supply between the IN and configurable between 1.2V and 5.0V (Table 3), and can nearest GND terminal posts. deliver 500mA of current. 10) Connect the 500mA electronic load between the OUT The MAX38902 (WLP) circuit on the EV kit comes with and nearest GND terminal posts. the MAX38902C-ANT+ installed and the output is resistor configured to 3.3V, and can deliver 500mA of current. The 11) Connect the DVM between the OUT and nearest output voltage on the MAX38902C can be reconfigured to GND terminal posts. other voltages from 0.6V to 5.3V by replacing feedback 12) Turn on the power supply. resistors R1 and R2. Refer to the MAX38902 IC data 13) Enable the electronic load. sheet for feedback resistor calculation. 14) Verify that the voltage at the OUT terminal post is EN for the MAX38902C/D (WLP) Circuit approximately 5V. The MAX38902C/D (WLP) circuit on the EV kit provide a jumper JU1 to enable or disable the MAX38902C (or the Detailed Description of Hardware MAX38902D after IC replacement). Refer to Table 1 for The MAX38902 EV kit evaluates the MAX38902A/B/C/D jumper setting of jumper JU1. IC family. The MAX38902A/B/C/D are low noise linear regulators that deliver 500mA of output current with only EN for the MAX38902A/B (TDFN) Circuit 12V of output noise from 10Hz to 100kHz. These RMS The MAX38902A/B (TDFN) circuit on the EV kit provide regulators require only 100mV of input-to-output head- a jumper JU101 to enable or disable the MAX38902A (or room at full load. the MAX38902B after IC replacement). Refer to Table 2 for jumper setting of jumper JU101. Table 1. EN on MAX38902C/D (JU1) Table 2. EN on MAX38902A/B (JU101) JU1 JU1 DESCRIPTION DESCRIPTION SHUNT POSITION SHUNT POSITION 1-2* Enabled. EN = IN1 1-2* Enabled. EN = IN 2-3 Disabled. EN = GND1 2-3 Disabled. EN = GND *Default Position *Default Position Maxim Integrated 2 www.maximintegrated.com