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Document overview

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Technical content

Features

  • Operating VIN Range of 3.5V to 36V
  • 25µA No Load Quiescent Current in SKIP Mode
  • High-Efficiency Synchronous DC-DC Converter with Integrated FETs
  • 220kHz to 2.2MHz Adjustable Frequency
  • External Frequency Synchronization (SYNC) Input
  • Internal Soft-Start
  • Fixed 3.3V/5.0V Output or Resistor Programmable 1V to 10V Output
  • Low Dropout (98% Effective Duty Cycle Operation)
  • ±2% Output Voltage Accuracy
  • RESET Output
  • Proven PCB Layout
  • Fully Assembled and Tested 319-100194; Rev 0; 5/18 Ordering Information appears at end of data sheet. Quick Start Required Equipment
  • MAX20006/MAX20008 EV kit
  • 14V, 4A DC power supply
  • Electronic load capable of 8A
  • Digital voltmeter (DVM) Procedure Each EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on supplies until all connections are made. 1) Verify that jumpers JU1–JU2 are in their default posi- tions, as shown in Table 1. 2) Connect the 14V power supply between the VIN and nearest GND input terminals on the EV kit. 3) Connect the electronic load between the VOUT and nearest GND output terminals on the EV kit and set for 6A (MAX20006EVKIT) or 8A (MAX20008EVKIT). 4) Connect the DVM between the VOUT and nearest GND output terminals on the EV kit. 5) Turn on the power supply. 6) Enable the electronic load. 7) Verify that the voltage at VOUT is approximately 5V. Click here for production status of specific part numbers.

Maxim Integrated │ 2 www.maximintegrated.com Evaluate: MAX20004/MAX20006/MAX20008MAX20006/MAX20008 Evaluation Kits Detailed Description of Hardware The MAX20006/MAX20008 EV kits come fully assembled and tested. The MAX20006EVKIT is populated with the MAX20006AFOA/VY+, and the MAX20008EVKIT is populated with the MAX20008AFOA/VY+. Other converters in the family can be tested on the same EV kit; however, changing the IC or the output voltage may also require changing other components. Consult the IC data sheet for guidance on selecting the proper ICs and external components. Enable (EN) Place a shunt in the 2-3 position on jumper JU1 to enable the IC for normal operation. To place the device into shut- down mode, move the shunt on JU1 to the 2-1 position. Synchronization and Switching The IC has the ability to operate in either forced- PWM mode or in SKIP mode. Place a shunt in the 2-1 position on JU2 to select forced-PWM mode at the resistor-programmed frequency. Removing the shunt from JU2 or placing a shunt in the 2-3 position on jumper JU2 causes the IC to enter SKIP mode for maximum light load efficiency. With a shunt in the 2-3 position on jumper JU2, the switching frequency can be synchronized to an appro- priate external signal applied to the SYNC input terminal. Setting the Switching Frequency (FOSC) The IC switching frequency is set by a resistor connected from FOSC to AGND. Refer to the IC data sheet for selecting the resistor value. RESET Output The EV kit provides a RESET output to monitor the status of the device output. The RESET output is an open-drain output from the IC with an external pullup resistor to VOUT on the EV kits. Refer to the IC data sheet for details on the RESET functionality. Output Voltage Setting Populating R9 with a 0Ω jumper connects FB to BIAS for a fixed +5V (EV kit default output) or a fixed +3.3V output voltage depending on the IC version. To set the output to other voltages between 1V and 10V, remove R9, populate R1 with a 0Ω jumper, and populate R7/R8/C14 with the appropriate values. Other component modifications might also be required. Refer to the IC data sheet for details on setting the output voltage. Table 1. Enable Control (JU1) Table 2. Operating Mode Control (JU2)

Ordering Information

Maxim Integrated │ 3 www.maximintegrated.com Evaluate: MAX20004/MAX20006/MAX20008MAX20006/MAX20008 Evaluation Kits Revison: B Date: 02/20/2017 Parts Common to All Variants REFERENCE QTY DESCRIPTION MANUFACTURER PART# C1 1 CAP CER 0.1UF 50V X7R 0402 TDK CGA2B3X7R1H104K050BB C2 1 CAP CER 10UF 35V X7R 1206 TDK C3216X7R1V106K160AC C3 1 CAP ALUM 100UF 20% 35V SMD PANASONIC EEEFP1V101AP C4,C5,C7 3 CAP CER 0.1UF 100V X7R 0603 MURATA GRJ188R72A104KE11D C8 1 CAP CER 2.2UF 10V X7R 0603 TDK C1608X7R1A225K080AC C9 1 CAP CER 1000PF 100V X7R 0603 TDK C1608C0G2A102J080AA C10,C11 2 CAP CER 47UF 10V X7R 1210 MURATA GRM32ER71A476ME15L C13 0 Not Installed C14 0 Not Installed FB1 1 FERRITE CHIP 60 OHM 6A 1806 MURATA BLM41PG600SH1L J1,J2 2 3 PIN HEADER 0.100" 40POS CUT TO FIT TE CONNECTIVITY 4-103327-0 R1 0 Not Installed R2,R6 2 RES SMD 100K OHM 1% 1/10W 0603 PANASONIC ERJ-3EKF1003V R5,R9 2 RES SMD 0 OHM JUMPER 1/10W 0603 PANASONIC ERJ-3GEY0R00V R7 0 Not Installed R8 0 Not Installed GND,VIN,SYNC,RESET,VOU T,GND 6 WIRE LOOP 18AWG SOLID BARE WIRE TINNED GND,VIN,VOUT,GND 4 BANANA JACK UNINSULATED THREADED EXTERNAL NUT POMONA 3267

1 PCB, MAX20004/6/8 EV Kit

2 POSITION SHUNT CONNECTOR BLACK

OPEN TOP 0.100" KYCON SX1100-B

1 LABEL 85-84003-006

1 WEB instructions for Maxim Data Sheet EVINSERT

BAG, STATIC SHIELD ZIP 5”x6”, W/ ESD LOGO 87-02162-000

1 FOAM, ANTI-STATIC PE 12”x12”X5MM 85-MAXKIT-PNK

1 BOX, BROWN 9 3/16” x 7” x 7/8”

MAX20006EVKIT# Variant (5V 2.2MHz) C6 1 CAP CER 3.9PF 100V C0G 0603 MURATA GRM1885C2A3R9CZ01D C12 0 Not Installed L1 1 INDUCTOR 1UH COILCRAFT XAL6030-102ME R3 1 RES SMD 12K OHM 1% 1/10W 0603 PANASONIC ERJ-3EKF1202V R4 1 RES SMD 39K OHM 1% 1/10W 0603 PANASONIC ERJ-3EKF3902V U1 1 IC STEP DOWN CONVERTER 17L-FCQFN MAXIM MAX20006AFOA/VY+ MAX20008EVKIT# Variant (5V 400kHz) C6 1 CAP CER 27PF 100V C0G 0603 MURATA GRM1885C2A270JA01D C12 1 CAP CER 47UF 10V X7R 1210 MURATA GRM32ER71A476ME15L L1 1 INDUCTOR 4.7UH COILCRAFT XAL6060-472ME R3 1 RES SMD 73.2K OHM 1% 1/10W 0603 PANASONIC ERJ-3EKF7322V R4 1 RES SMD 30K OHM 1% 1/10W 0604 PANASONIC ERJ-3EKF3002V U1 1 IC STEP DOWN CONVERTER 17L-FCQFN MAXIM MAX20008AFOA/VY+ MAX20006/MAX20008 EV Kit Bill of Materials

Maxim Integrated │ 4 www.maximintegrated.com Evaluate: MAX20004/MAX20006/MAX20008MAX20006/MAX20008 Evaluation Kits MAX20006 5V 2.2MHz Application VOUT VSUP BIAS BIAS BIAS VOUT VSUP 12k VIN1 1 3.9pF 0.1uF C11 47uF 0.1uF+ C3 100uF 39k SYNC 1 1 100k C13 NP VIN 1 1 TP2 PGND2 1 JU1 VOUT11 NP NP PGND4 PGND 0.1uF FB1 0.1uF 10uF MAX20004/6/8 SUPSW9 SUP10 EN11 SYNC12 GND14 LX1 6 BST 3 OUT 1 RESET 2 PGND1 4 FB 16BIAS13 FOSC17 COMP 15 PGND2 5 PGND3 7 PGND4 8 2.2uF TP1 RESET11 PGND 1 1 1UF C12 NP C10 47uF C14 NP JU2 NP 100k PGND311 1000pF VOUT11 MAX20006/MAX20008 EV Kit Schematic

Maxim Integrated │ 5 www.maximintegrated.com Evaluate: MAX20004/MAX20006/MAX20008MAX20006/MAX20008 Evaluation Kits MAX20006/MAX20008 EV Kit PCB Layout—Top Layer MAX20006/MAX20008 EV Kit PCB Layouts

Maxim Integrated │ 6 www.maximintegrated.com Evaluate: MAX20004/MAX20006/MAX20008MAX20006/MAX20008 Evaluation Kits MAX20006/MAX20008 EV Kit PCB Layout—Layer 1 MAX20006/MAX20008 EV Kit PCB Layouts (continued)

Maxim Integrated │ 7 www.maximintegrated.com Evaluate: MAX20004/MAX20006/MAX20008MAX20006/MAX20008 Evaluation Kits MAX20006/MAX20008 EV Kit PCB Layout—Layer 2 MAX20006/MAX20008 EV Kit PCB Layouts (continued)

Maxim Integrated │ 8 www.maximintegrated.com Evaluate: MAX20004/MAX20006/MAX20008MAX20006/MAX20008 Evaluation Kits MAX20006/MAX20008 EV Kit PCB Layout—Bottom Layer MAX20006/MAX20008 EV Kit PCB Layouts (continued)

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. │ 9 Evaluate: MAX20004/MAX20006/MAX20008MAX20006/MAX20008 Evaluation Kits REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 5/18 Initial release —

Revision History

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