Analog Devices Inc./Maxim Integrated MAX77541EVKIT#

Overview

MAX77541EVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit for the MAX77541 dual-phase configurable step-down regulator in wafer-level package (WLP30). It supports input voltage range 2.2V–5.5V, default dual-phase output of 0.65V/4.6A, 1.6MHz switching frequency, and I²C programmable configuration via MAXUSB_INTERFACE#.

For engineers reviewing the MAX77541EVKIT# datasheet, MAX77541EVKIT# pinout, MAX77541EVKIT# application, or MAX77541EVKIT# equivalent, this page delivers verified hardware specifications, jumper-configurable phase/output settings, GUI-driven register control, probe-socketed critical node access (VOUT1/VOUT2/LX1/LX2), and full BOM traceability for power management validation in mobile SoC and battery-powered embedded systems.

Technical Context

The MAX77541EVKIT# implements Maxim's recommended PCB layout for the MAX77541AAWV+T IC, including optimized thermal vias, low-inductance power paths, and split-ground planes for buck regulators. It supports both single-phase (1ϕ + 1ϕ) and dual-phase (2ϕ) operation via SEL2 resistor configuration and R12 installation status.

Hardware features include three potentiometers for real-time SEL1/SEL2/CFG adjustment, onboard 2.2kΩ I²C pull-ups (R4/R7), test points for all control signals (EN1/EN2/FPWM1/FPWM2/POK1/POK2/IRQB), and probe sockets at VOUT1 (J10), VOUT2 (J12), LX1 (J14), and LX2 (J13) to minimize measurement noise during ripple, transient, and switching waveform analysis.

Key Specifications

Availability

MAX77541EVKIT# is available at Aetrix Electronics and suitable for mobile SoC power validation, battery-powered embedded design verification, and multi-rail PMIC qualification requiring stable component supply, full documentation traceability, and production-intent layout fidelity.

Supply support for MAX77541EVKIT# 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 precision analog, mixed-signal, and power management ICs for high-reliability applications in automotive, industrial, and portable electronics.

The MAX77541 product line targets advanced mobile and wearable platforms requiring ultra-compact, high-efficiency, and dynamically reconfigurable power delivery - specifically dual-phase buck regulation with I²C-based DVS and soft-start/stop control.

FAQ

What is the primary function of the MAX77541EVKIT#?

The MAX77541EVKIT# is a fully assembled evaluation platform for the MAX77541 dual-phase step-down regulator. It enables engineers to validate power delivery performance-including output voltage accuracy, load/transient response, efficiency, and I²C programmability-under real-world conditions using Maxim's reference layout and GUI-controlled register interface. The MAX77541EVKIT# directly supports rapid prototyping of mobile SoC power rails.

Does the MAX77541EVKIT# support both single-phase and dual-phase configurations?

Yes, the MAX77541EVKIT# supports both configurations. Dual-phase mode is enabled by setting SEL2 to GND (J5 position 3–4) and installing R12; single-phase (1ϕ + 1ϕ) requires SEL2 >200Ω and removal of R12. This behavior is confirmed in Table 3 of the official documentation and validated through on-board jumper and resistor options.

What hardware is required to use the MAX77541EVKIT# GUI software?

To use the MAX77541EVKIT# GUI, you need the MAXUSB_INTERFACE# adapter, a USB Type-A to Micro-USB cable, a Windows PC (Windows 7 or newer), and the GUI installer downloaded from Maxim's product page. The MAX77541EVKIT# connects to the MAXUSB_INTERFACE# via J11, and VIO is powered either from the GUI connector (J15 pins 1–2) or an external source (J15 pins 2–3).

Can the MAX77541EVKIT# be used without the MAXUSB_INTERFACE#?

Yes. The MAX77541EVKIT# operates standalone using jumper-configured defaults (e.g., VOUT1 = 0.65V, fSW = 1.6MHz, skip mode). All control pins (EN1/EN2/FPWM1/FPWM2/SEL1/SEL2/CFG) are accessible via test points or jumpers. An external I²C host can connect via J16 header, bypassing the MAXUSB_INTERFACE# entirely.

Are the output capacitors on the MAX77541EVKIT# rated for 125°C operation?

No. Capacitors C10–C23 (22µF X5R, 0603) are rated only to +85°C ambient and exhibit increased leakage above that temperature. For 125°C ambient testing, these must be replaced with high-temp equivalents (e.g., X7R or polymer types rated to 125°C), as explicitly noted in the "High Temperature Testing" section of the EV kit documentation.