Analog Devices Inc./Maxim Integrated MAX17633AEVKIT#

Overview

MAX17633AEVKIT# from Maxim Integrated is an evaluation kit for the MAX17633A 3.3V fixed-output, 4.5V–36V input, 3.5A synchronous step-down DC-DC converter in a 20-pin TQFN package. It enables rapid validation of power delivery in industrial control, base-station, and high-voltage single-board systems with built-in RESET monitoring, adjustable soft-start, and external clock synchronization support.

For engineers reviewing the MAX17633AEVKIT# datasheet, MAX17633AEVKIT# pinout, MAX17633AEVKIT# application, or MAX17633AEVKIT# equivalent, this kit provides verified layout, thermal vias, and test points for evaluating efficiency (≥93% peak), light-load PFM/DCM operation, hiccup-mode overload protection, and CISPR-22 Class B EMI compliance under real-world load transients and prebiased startup conditions.

Technical Context

The MAX17633AEVKIT# implements the MAX17633A IC in a fully assembled, tested 4mm × 4mm TQFN layout with optimized power-ground plane, exposed-pad thermal connection, and 2×22µF output capacitance. It supports all three operating modes-PWM, PFM, and DCM-via MODE/SYNC pin configuration and includes RT resistor pads for 400kHz–2.2MHz frequency tuning.

Key design features include integrated high-side (65mΩ) and low-side (40mΩ) MOSFETs, internal compensation eliminating external loop components, EXTVCC auxiliary supply for improved efficiency at 5V output, and precise ±1.3% FB regulation accuracy over –40°C to +125°C ambient.

Key Specifications

Availability

MAX17633AEVKIT# is available at Aetrix Electronics and suitable for industrial control power supplies, base-station power supplies, and high-voltage single-board systems requiring stable component supply and fast prototyping turnaround.

Supply support for MAX17633AEVKIT# 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, and interface applications in industrial, automotive, and communications markets.

The MAX17633AEVKIT# belongs to the Himalaya series of voltage regulator evaluation kits, engineered to accelerate development of compact, high-efficiency, thermally robust DC-DC solutions for harsh-environment applications.

FAQ

What is the primary function of the MAX17633AEVKIT#?

The MAX17633AEVKIT# is a fully assembled evaluation platform for the MAX17633A 3.3V fixed-output synchronous buck converter. It enables engineers to validate performance-including efficiency, transient response, thermal behavior, and EMI-under real operating conditions without custom PCB design. The kit includes test points, jumpers for mode selection, and layout-optimized thermal management per the MAX17633A datasheet guidelines.

Does the MAX17633AEVKIT# support adjustable output voltage?

No. The MAX17633AEVKIT# is specifically configured for the MAX17633A variant, which delivers a fixed 3.3V output. For adjustable output, Maxim offers the MAX17633CEVKIT# supporting the MAX17633C (0.9V to 90% of VIN). The MAX17633AEVKIT# uses direct FB connection (no resistor divider) and factory-trimmed feedback network matching the 3.3V regulation point.

Can the MAX17633AEVKIT# be synchronized to an external clock?

Yes. The MAX17633AEVKIT# exposes the MODE/SYNC pin and includes appropriate routing and test points to accept an external clock signal between 1.1× and 1.4× the RT-set switching frequency (e.g., 550kHz–700kHz for default 500kHz operation). Synchronization forces PWM mode and requires ≥50ns pulse width and ≥160ns off-time, as specified in the MAX17633A datasheet.

What protection features are validated on the MAX17633AEVKIT#?

The MAX17633AEVKIT# demonstrates hiccup-mode overload protection, thermal shutdown (165°C trigger), adjustable EN/UVLO threshold, monotonic soft-start with prebiased output support, and open-drain RESET assertion when FB falls below 92% of regulation. These protections are verified using load-step testing and thermal imaging per the MAX17633A characterization data.

Is the MAX17633AEVKIT# RoHS-compliant and lead-free?

Yes. The MAX17633AEVKIT# uses RoHS-compliant components and lead-free soldering processes. The underlying MAX17633A IC carries a "+" suffix in its package code (T2044+4C), indicating full RoHS compliance per Maxim Integrated's packaging standards, and the evaluation board conforms to IPC-J-STD-020 moisture sensitivity level 3 requirements.