Analog Devices Inc./Maxim Integrated MAXM38643AEVK#EMGA

Overview

MAXM38643AEVK#EMGA from Maxim Integrated is an evaluation kit designed to validate the MAXM38643A ultra-low quiescent current step-down DC-DC converter in a 10-pin EMGA package. It supports 1.8V–5.5V input, delivers up to 600mA output current, and offers resistor-configurable output voltages from 0.7V to 3.3V - ideal for battery-powered IoT sensors and wearable power management.

For engineers reviewing the MAXM38643AEVK#EMGA datasheet, MAXM38643AEVK#EMGA pinout, MAXM38643AEVK#EMGA application, or MAXM38643AEVK#EMGA equivalent, this kit provides fully assembled hardware with proven 2-layer PCB layout, jumper-based EN/RSEL configuration, and pre-installed MAXM38643AEMB+ IC for rapid functional validation and load regulation testing.

Technical Context

The MAXM38643AEVK#EMGA implements a complete evaluation platform for the MAXM38643A buck module, featuring dual jumpers (JU1 for EN control, JU2 for RSEL selection) that directly interface with the IC's enable and output voltage selection pins. Input is applied via banana jacks (IN/GND), output is accessed at OUT/GND terminals, and external TTL-level enable signals can be injected through EXT_EN test point.

Hardware includes three ceramic input capacitors (22µF, X5R), one organic polymer output capacitor (100µF, 25V), and precision SMT resistors (0Ω, 191kΩ, 634kΩ, 20kΩ, 56.2kΩ) enabling discrete output voltage settings per Table 2 - 1.0V (default), 1.5V, 1.8V, 2.5V (open), and 3.3V - all verified across the full 1.8V–5.5V input range.

Key Specifications

Availability

MAXM38643AEVK#EMGA is available at Aetrix Electronics and suitable for battery-powered IoT sensor nodes, portable medical monitors, and low-power industrial telemetry systems requiring stable component supply and rapid power architecture validation.

Supply support for MAXM38643AEVK#EMGA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated, now part of Analog Devices, designs high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing applications.

The MAXM38643A product line delivers integrated nano-power buck modules targeting ultra-long-life battery applications where quiescent current below 500nA and minimal solution size are critical design constraints.

FAQ

What is the default output voltage setting on the MAXM38643AEVK#EMGA?

The MAXM38643AEVK#EMGA ships with jumper JU2 in position 1–2, configuring the RSEL pin to deliver 1.0V at the OUT terminal. This default setting is confirmed in Table 2 of the EV kit documentation and verified during factory testing of the pre-installed MAXM38643AEMB+ IC.

Does the MAXM38643AEVK#EMGA require external components to operate?

No - the MAXM38643AEVK#EMGA is fully assembled and tested with all required passives: three 22µF X5R input capacitors, one 100µF organic polymer output capacitor, precision feedback resistors, and the MAXM38643AEMB+ IC. Only a 5.5V/3A DC supply and optional electronic load/DVM are needed for operation.

Can the MAXM38643AEVK#EMGA evaluate other variants of the MAXM38643 family?

No - the MAXM38643AEVK#EMGA is specifically designed for the MAXM38643A in the 10-pin EMGA package (outline 21-100245). It is not compatible with non-A variants or different packages such as QFN or WLP, as layout, pinout, and thermal pad connections differ per datasheet specifications.

How is enable/disable control implemented on the MAXM38643AEVK#EMGA?

Enable/disable is managed via jumper JU1: position 1–2 enables the MAXM38643A by pulling EN high internally; position 1–3 allows external TTL-level control via the EXT_EN test point; position 1–4 disables the IC by grounding EN. All states are electrically validated per Table 1 in the EV kit documentation.

Is the PCB layout of the MAXM38643AEVK#EMGA available for reference design reuse?

Yes - the MAXM38643AEVK#EMGA includes publicly available design files: schematic, 2-layer PCB layout (top/bottom), component placement guide, and bill of materials. These files are provided by Maxim Integrated to support derivative board development and layout verification for the MAXM38643AEMB+ IC.