Analog Devices Inc./Maxim Integrated MAX1954AEVKIT

Overview

The MAX1954AEVKIT from Maxim Integrated is a fully assembled and tested evaluation kit designed to demonstrate the MAX1954A synchronous buck controller in a 1.5V/5A DC-DC conversion application, operating from a 10.8V–13.2V input with 300kHz fixed-frequency PWM switching and >90% efficiency using supplied components.

For engineers reviewing the MAX1954AEVKIT datasheet, MAX1954AEVKIT pinout, MAX1954AEVKIT application, or MAX1954AEVKIT equivalent, this kit supports rapid validation of high-efficiency, n-channel MOSFET-based buck topologies with adjustable output down to 0.8V, foldback short-circuit protection, and thermal-overload safety features.

Technical Context

The MAX1954AEVKIT implements a current-mode, fixed-frequency (300kHz) synchronous buck regulator using the MAX1954A IC in a 10-pin µMAX package, paired with Fairchild FDS6890A dual n-MOSFETs and Coilcraft DO3316P-272HC inductor to deliver stable 1.5V at up to 5A.

It supports dual-input operation (VIN: 3.0V–5.5V; VHSD: 10.8V–13.2V), configurable output shutdown via JU2 jumper, and output voltage adjustment via R1 resistor per V_OUT = 0.8V × (1 + R1/8.06kΩ), with no external current-sense resistor required.

Key Specifications

Availability

MAX1954AEVKIT is available at Aetrix Electronics and suitable for DC-DC converter validation, power supply reference design verification, and buck topology characterization requiring stable component supply and pre-tested hardware.

Supply support for MAX1954AEVKIT 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 precision analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.

The MAX1954A product line delivers high-efficiency, current-mode synchronous buck controllers targeting space-constrained, cost-sensitive point-of-load applications with minimal external components.

FAQ

What does the MAX1954AEVKIT evaluate?

The MAX1954AEVKIT evaluates the MAX1954A synchronous buck controller IC. It implements a complete 1.5V/5A application circuit with 300kHz switching, >90% efficiency, and dual-input capability (VHSD: 10.8V–13.2V; VIN: 3.0V–5.5V). The board uses the MAX1954AEUB in a 10-pin µMAX package, Fairchild FDS6890A dual MOSFETs, and Coilcraft DO3316P-272HC inductor - all pre-assembled and tested.

How do I configure the MAX1954AEVKIT for 0.8V output?

To configure the MAX1954AEVKIT for 0.8V output, replace R1 with a 0Ω resistor (or short), since the MAX1954A feedback divider minimum sets V_OUT = 0.8V × (1 + R1/8.06kΩ). At R1 = 0Ω, V_OUT = 0.8V. Ensure compensation components (C6, C7, C9, R3) remain as specified in the MAX1954A datasheet for stability at reduced output voltage.

Does the MAX1954AEVKIT require an external current-sense resistor?

No, the MAX1954AEVKIT does not require an external current-sense resistor. The MAX1954A uses internal MOSFET R_DS(on) sensing for current-mode control, eliminating the need for a discrete sense resistor and reducing board area and power loss - a key feature confirmed in the EV kit's Bill of Materials and schematic.

What protection features are implemented on the MAX1954AEVKIT?

The MAX1954AEVKIT implements foldback short-circuit protection and thermal-overload protection via the MAX1954A IC. These functions are active during operation and verified in the kit's test procedure. No additional external circuitry is needed - protection behavior is inherent to the MAX1954A's internal architecture and enabled by default on the EV kit.

Can the MAX1954AEVKIT operate from a single 5V supply?

Yes, the MAX1954AEVKIT can operate from a single 5V supply: install a shunt on jumper JU1 to connect VHSD to VIN, then apply 5V between VHSD and GND. This configures the MAX1954A for low-input operation (3.0V–5.5V), and the output remains regulated at 1.5V/5A - confirmed in the Quick Start and Detailed Description sections of the official documentation.