Analog Devices Inc./Maxim Integrated MAX17531ATBEVKIT#

Overview

MAX17531ATBEVKIT# from Maxim Integrated is an evaluation kit for the MAX17531 high-voltage synchronous step-down DC-DC converter IC, supporting 4V–42V input and delivering up to 50mA at adjustable output voltages from 0.8V to 0.9×VIN. It features peak-current-mode control, 100kHz–2.2MHz programmable switching frequency, ±1.75% FB regulation accuracy over –40°C to +125°C, and PFM/PWM mode selection - validated in industrial sensor and HVAC power supply applications.

For engineers reviewing the MAX17531ATBEVKIT# datasheet, MAX17531ATBEVKIT# pinout, MAX17531ATBEVKIT# application, or MAX17531ATBEVKIT# equivalent, this kit enables rapid validation of the MAX17531's ultra-small footprint (3mm × 2mm TDFN), 22µA no-load quiescent current, internal compensation, soft-start, and RESET monitoring functionality in real-world 5V/3.3V bias rail designs.

Technical Context

The MAX17531ATBEVKIT# implements a fully assembled, tested reference design centered on the MAX17531 IC in 10-pin TDFN package, configured for 5V/50mA output with 300kHz switching (R_RT = 140kΩ), Coilcraft LPS5030-334M inductor, and Murata GRM21BR70J106K (10µF) / GRM21BR71H105K (1µF) ceramic capacitors. It supports both PFM and PWM operation via MODE pin configuration and includes external synchronization capability via RT/SYNC.

This kit validates key system-level behaviors: monotonic startup into prebiased loads, hiccup-mode overload protection, open-drain RESET assertion at 92%–95% V_FB, EN/UVLO threshold programming (1.15V–1.3V rising), and thermal shutdown at +160°C with 20°C hysteresis - all under industrial ambient conditions (–40°C to +125°C).

Key Specifications

Availability

MAX17531ATBEVKIT# is available at Aetrix Electronics and suitable for industrial sensor nodes, HVAC control modules, and battery-powered equipment requiring stable component supply, fast prototyping turnaround, and production-ready reference design validation.

Supply support for MAX17531ATBEVKIT# 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management solutions for industrial, automotive, and communications markets.

The MAX17531 product line delivers ultra-small, high-efficiency synchronous buck converters targeting space-constrained, high-reliability industrial power rails - designed specifically to replace high-voltage LDOs while minimizing external components and thermal stress.

FAQ

What is the primary function of the MAX17531ATBEVKIT#?

The MAX17531ATBEVKIT# is an evaluation kit for the MAX17531 synchronous step-down DC-DC converter IC. It provides a fully assembled, tested circuit enabling engineers to validate the IC's performance - including 4V–42V input operation, 50mA output, PFM/PWM mode switching, RESET monitoring, and soft-start behavior - without designing a custom PCB. The kit directly implements the typical application circuit shown in the MAX17531 datasheet.

Which MAX17531 package does the MAX17531ATBEVKIT# support?

The MAX17531ATBEVKIT# is configured for the 10-pin TDFN package (3mm × 2mm, package code T1032N+1), as confirmed by the land pattern (90-0082), thermal resistance data (θ_JA = 67.3°C/W), and top-view pinout diagram in the MAX17531 datasheet. It does not support the µMAX® package variant.

Does the MAX17531ATBEVKIT# include external synchronization capability?

Yes, the MAX17531ATBEVKIT# supports external synchronization via the RT/SYNC pin. As documented in the MAX17531 datasheet, an external clock (1.1×f_SW, 10%–70% duty cycle, >3V high) can be coupled through a 47pF capacitor to synchronize the internal oscillator - but only when the MODE pin is grounded for forced-PWM operation, which the kit supports via jumper configuration.

Can the MAX17531ATBEVKIT# be used to evaluate prebiased startup behavior?

Yes, the MAX17531ATBEVKIT# validates monotonic startup into prebiased outputs - a core feature of the MAX17531 IC. When powered with an existing 3.3V or 5V rail already present on VOUT, the kit's MAX17531 device holds both high-side and low-side FETs off until the internal reference ramps up, preventing reverse current flow and ensuring smooth, non-destructive ramp-up aligned with the target output voltage.

What protection features are demonstrated by the MAX17531ATBEVKIT#?

The MAX17531ATBEVKIT# demonstrates five critical protections inherent to the MAX17531 IC: (1) cycle-by-cycle peak current limiting (110mA typ), (2) thermal shutdown at +160°C with 20°C hysteresis, (3) open-drain RESET output asserting low at 92% V_FB, (4) hiccup-mode response to sustained overloads, and (5) EN/UVLO programmability with 1.15V–1.3V rising threshold - all verified per the MAX17531 Electrical Characteristics table and Typical Operating Characteristics plots.