Analog Devices Inc./Maxim Integrated MAX17221EVKIT#

Overview

MAX17221EVKIT# from Maxim Integrated is an evaluation kit designed to characterize the MAX17220–MAX17225 family of ultra-low quiescent current step-up DC-DC converters. It integrates two independent test circuits - one with the MAX17222ELT+ (6-pin µDFN) configured for 3V output delivering 225mA at 1.8V input, and another with the MAX17222ENT+ (6-pin WLP) configured for 5V output delivering 225mA at 3V input - both operating across a 400mV–5.5V input range.

For engineers reviewing the MAX17221EVKIT# datasheet, MAX17221EVKIT# pinout, MAX17221EVKIT# application, or MAX17221EVKIT# equivalent, this board enables rapid validation of nano-power boost converter performance, output voltage reconfiguration (1.8V–5V in 100mV steps), dual-package evaluation, and low-input-voltage startup behavior (0.88V typical with 3kΩ load).

Technical Context

The MAX17221EVKIT# implements two fully assembled, tested, and preconfigured synchronous boost converter channels on a proven 2-layer 1oz copper PCB. Each channel uses discrete external components - including Murata DFE201612E-2R2M (2.2µH) and Coilcraft XFL4020-222ME (2.2µH) inductors, and Murata GRM155R60J106ME44 (10µF) and GRM155R61A106ME44 (10µF) ceramic output capacitors - to demonstrate compact, high-efficiency nano-power conversion.

Hardware-level control is provided via shunt jumpers JU1 (for EN of MAX17222ENT+) and JU101 (for EN of MAX17222ELT+), enabling/disabling each circuit independently. Battery holders (CR1632 for WLP circuit; Energizer 364/363 for µDFN circuit) support standalone low-voltage source testing without external supplies.

Key Specifications

Availability

MAX17221EVKIT# is available at Aetrix Electronics and suitable for battery-powered IoT sensors, wearable medical monitors, and ultra-low-power industrial telemetry requiring stable component supply, fast prototyping turnaround, and validated reference design fidelity.

Supply support for MAX17221EVKIT# 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 precision analog, mixed-signal, and power management ICs for demanding applications in industrial, medical, communications, and consumer systems.

The MAX17220–MAX17225 product line targets energy-constrained systems requiring nanoscale quiescent current (<1.6µA), wide input range, and reliable startup from sub-1V sources - ideal for coin-cell and energy-harvesting applications.

FAQ

What is the primary function of the MAX17221EVKIT#?

The MAX17221EVKIT# is a fully assembled evaluation platform for the MAX17220–MAX17225 family of ultra-low quiescent current step-up DC-DC converters. It allows engineers to validate performance metrics - including startup voltage, efficiency, output regulation, and transient response - using two pre-installed IC variants: MAX17222ELT+ (µDFN) and MAX17222ENT+ (WLP). The MAX17221EVKIT# provides immediate hardware access to both configurations without soldering or layout design.

Can the MAX17221EVKIT# evaluate other parts in the MAX17220–MAX17225 family?

Yes - the MAX17221EVKIT# is explicitly designed to evaluate any member of the MAX17220–MAX17225 family. U1 and U101 footprints accept compatible 6-pin µDFN and WLP packages respectively. Users can replace the preinstalled MAX17222ELT+ and MAX17222ENT+ with other variants (e.g., MAX17220, MAX17225) and adjust feedback resistors or inductors to match target output voltage and current requirements per the family datasheet.

What are the default output configurations on the MAX17221EVKIT#?

The MAX17221EVKIT# ships with the MAX17222ELT+ (µDFN) configured for 3V output and the MAX17222ENT+ (WLP) configured for 5V output - both verified at 225mA load. These settings use onboard feedback resistors (e.g., R101C = 133kΩ for 5V) and are documented in the schematic and BOM. Output voltage can be reconfigured to 1.8V, 2.0V, 2.5V, 3.3V, or 4.5V using spare resistors provided on the PCB bottom side.

Does the MAX17221EVKIT# support battery-powered testing?

Yes - the MAX17221EVKIT# includes dedicated SMT battery holders: V1 accepts a CR1632 lithium coin cell to power the WLP circuit (MAX17222ENT+), and V101 accepts an Energizer 364/363 silver oxide cell to power the µDFN circuit (MAX17222ELT+). This enables true standalone evaluation under real-world low-voltage, low-current source conditions without requiring external bench supplies.

What external equipment is required to operate the MAX17221EVKIT#?

To operate the MAX17221EVKIT#, users need a 1.8V–5V, 3A DC power supply (for bench testing), an electronic load capable of 225mA, and a digital voltmeter. The kit includes all necessary jumpers (JU1, JU101), terminal posts (IN/IN1, GND/GND1, 3V/5V), and test points. No additional passive components or programming tools are required - the MAX17221EVKIT# is shipped fully assembled and tested.