Analog Devices Inc./Maxim Integrated MAXM17903EVKIT#

Overview

MAXM17903EVKIT# from Maxim Integrated is an evaluation kit for the MAXM17903 adjustable-output Himalaya uSLIC™ step-down power module, enabling rapid validation of 0.9V–5V, 300mA DC-DC conversion from 4.5V–24V input in compact industrial and battery-powered systems. It supports PFM/PWM mode selection, features open-drain RESET monitoring, programmable EN/UVLO, and internal soft-start.

For engineers reviewing the MAXM17903EVKIT# datasheet, MAXM17903EVKIT# pinout, MAXM17903EVKIT# application, or MAXM17903EVKIT# equivalent, this kit provides verified reference layout, thermal performance data, conducted/radiated EMI test results per CISPR22 Class B, load transient response waveforms, and startup behavior into prebiased outputs - all critical for point-of-load design validation and qualification.

Technical Context

The MAXM17903EVKIT# implements the MAXM17903 power module in a fully assembled, tested PCB layout optimized for low-noise operation and thermal management. It includes all required external components: input/output ceramic capacitors (1µF CIN, 10µF COUT), feedback resistor divider (R3 = 133kΩ, R4 = 75kΩ for 2.5V output), pull-up resistor for RESET, and EN/UVLO configuration network.

Designed to demonstrate peak-current-mode control with fixed 4.1ms soft-start, hiccup overcurrent protection (131ms timeout), and -40°C to +125°C ambient operation, the kit validates key system-level behaviors including PFM/PWM mode transition, prebias startup, output short-circuit recovery, and RESET assertion timing (2ms delay after FB reaches 95.5% regulation).

Key Specifications

Availability

MAXM17903EVKIT# is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB Type-C powered loads, and HVAC control systems requiring stable component supply during prototyping, qualification, and early production phases.

Supply support for MAXM17903EVKIT# 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 and mixed-signal ICs for power, sensing, communication, and interface applications.

The Himalaya uSLIC™ product line delivers fully integrated, compact, and thermally robust DC-DC power modules targeting space-constrained industrial, automotive, and battery-powered equipment where reliability and ease of use are critical.

FAQ

What is the primary function of the MAXM17903EVKIT#?

The MAXM17903EVKIT# is an evaluation kit designed to accelerate development and validation of the MAXM17903 adjustable-output uSLIC™ step-down power module. It provides a fully assembled PCB with optimized layout, all necessary passive components, and documented test points to verify electrical performance, thermal behavior, EMI compliance, and dynamic response under real-world conditions.

Does the MAXM17903EVKIT# support both PFM and PWM operating modes?

Yes, the MAXM17903EVKIT# fully supports both PFM and forced PWM modes as implemented by the MAXM17903. The MODE pin is accessible on the board, allowing users to ground it for constant-frequency PWM operation or leave it unconnected for automatic PFM mode at light loads - with corresponding efficiency and transient response data provided in the reference documentation.

Can the MAXM17903EVKIT# be used to evaluate prebiased startup behavior?

Yes, the MAXM17903EVKIT# explicitly validates startup into a prebiased output - a critical capability for multi-rail digital systems. Test waveforms in the official documentation confirm successful soft-start without discharging the output capacitor in both PFM and PWM modes, with no external circuitry modifications required on the kit.

What output voltage is configured on the MAXM17903EVKIT# by default?

The MAXM17903EVKIT# is configured for a default 2.5V output using an external resistor divider (R3 = 133kΩ, R4 = 75kΩ). This configuration is documented in the typical application circuit and verified in efficiency vs. load current plots. Users can easily reconfigure the output between 0.9V and 5V by changing the feedback resistors per the MAXM17903 datasheet equations.

Does the MAXM17903EVKIT# include EMI test data for regulatory compliance?

Yes, the MAXM17903EVKIT# includes complete CISPR22 Class B conducted and radiated emissions test results - measured with specified filter components (0.1µF + 0.47µF C, 82µH L, 1µF C). These data confirm compliance and provide design guidance for system-level EMI filtering, reducing time-to-certification for end products incorporating the MAXM17903.