Analog Devices Inc./Maxim Integrated MAXM17900EVKIT#

Overview

MAXM17900EVKIT# from Maxim Integrated is an evaluation kit for the MAXM17900 synchronous step-down power module-a compact, integrated DC-DC converter delivering up to 100mA at 0.9V–5.5V output from a 4V–24V input. It features peak-current-mode control, programmable soft-start (5.1ms default), open-drain RESET output, and operates in PWM or PFM mode. The kit enables rapid validation of power delivery in space-constrained industrial sensor and 4mA–20mA loop applications.

For engineers reviewing the MAXM17900EVKIT# datasheet, MAXM17900EVKIT# pinout, MAXM17900EVKIT# application, or MAXM17900EVKIT# equivalent, this evaluation platform supports full characterization of MAXM17900 performance-including efficiency vs. load, transient response, soft-start behavior, and EN/UVLO threshold tuning-under real-world PCB layout and thermal conditions.

Technical Context

The MAXM17900EVKIT# implements the MAXM17900 power module in a fully assembled, tested configuration with optimized 4-layer PCB layout, pre-populated ceramic input/output capacitors (2.2µF IN, 10µF OUT), and all necessary resistors for 3.3V or 5V output configuration. It exposes all critical signals-IN, OUT, GND, FB, EN/UVLO, RT/SYNC, SS, MODE, RESET, LX-for probing and modification.

Designed per Maxim's uSLIC™ land pattern (90-100027), the board supports direct measurement of thermal performance (θ_JA = 30.6°C/W), hiccup-mode overcurrent protection timing (51ms timeout), and RESET assertion thresholds (92%–95% V_FB). It validates operation across –40°C to +125°C ambient and confirms CISPR22 Class B emissions compliance.

Key Specifications

Availability

MAXM17900EVKIT# is available at Aetrix Electronics and suitable for industrial sensor prototyping, 4mA–20mA loop-powered device development, and LDO replacement validation requiring stable component supply and documented thermal/electrical characterization data.

Supply support for MAXM17900EVKIT# 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 highly integrated analog and mixed-signal ICs for power, sensing, and interface applications, with emphasis on miniaturization and system-level simplification.

The Himalaya series-including the MAXM17900-is engineered for space-constrained, thermally demanding industrial and building automation systems where board area, EMI, and design cycle time are critical constraints.

FAQ

What is the primary function of the MAXM17900EVKIT#?

The MAXM17900EVKIT# is a fully assembled evaluation platform for the MAXM17900 synchronous step-down power module. It enables engineers to validate electrical performance-including efficiency, transient response, soft-start behavior, and RESET functionality-without designing custom PCBs. The kit includes pre-configured components for 3.3V and 5V outputs, test points for all pins, and documentation aligned with the MAXM17900 datasheet.

Does the MAXM17900EVKIT# support adjustable output voltage?

Yes, the MAXM17900EVKIT# supports output voltages from 0.9V to 5.5V via the FB resistor divider. Jumper-selectable configurations provide 3.3V and 5V defaults, while unpopulated pads allow users to install custom R4/R5 values per the formula V_OUT = 0.812V × (1 + R4/R5). The board includes footprints matching Table 1 in the MAXM17900 datasheet for frequencies up to 900kHz.

Can the MAXM17900EVKIT# be used to evaluate PFM and PWM modes?

Yes, the MAXM17900EVKIT# provides direct access to the MODE pin to evaluate both operation modes. Leaving MODE unconnected enables light-load PFM mode (for high efficiency at <10mA); grounding MODE forces fixed-frequency PWM mode (for predictable EMI and stable frequency across load). Test points allow oscilloscope monitoring of LX and VOUT waveforms in each mode.

How is the soft-start time configured on the MAXM17900EVKIT#?

The MAXM17900EVKIT# implements the default 5.1ms internal soft-start when the SS pin is left unconnected-verified on shipped units. For adjustable timing, the board includes an SS test point and ground pad to solder an external capacitor (CSS = 6.25 × t_SS, where t_SS is in ms and CSS in nF). This allows monotonic VOUT ramp-up under pre-biased or heavy-load conditions.

What thermal data is provided with the MAXM17900EVKIT#?

The MAXM17900EVKIT# delivers measured thermal performance: junction-to-ambient thermal resistance θ_JA = 30.6°C/W under natural convection on its 4-layer PCB. It validates thermal shutdown behavior (trip at +160°C, hysteresis 20°C) and supports IR imaging of the MAXM17900 uSLIC™ package during sustained 100mA loads. Layout follows Maxim's land pattern 90-100027 for repeatable results.