Analog Devices Inc./Maxim Integrated MAX77540QEVKIT#

Overview

MAX77540QEVKIT# from Maxim Integrated is an evaluation kit designed to validate the MAX77504AAFC+ 3A high-efficiency buck converter IC in real-world power supply designs. It supports 2.6V–14V input, delivers a factory-default 3.3V output (configurable from 0.6V to 6V), operates at switching frequencies from 500kHz to 1.5MHz, and provides accessible test points for EN, POK, FPWM/SYNC, and output sensing.

For engineers reviewing the MAX77540QEVKIT# datasheet, MAX77540QEVKIT# pinout, MAX77540QEVKIT# application, or MAX77540QEVKIT# equivalent, this kit enables rapid validation of buck converter performance, FPWM/SYNC synchronization, RSEL-based configuration, UVLO behavior (2.6V rising / 2.4V falling), and efficiency optimization under load conditions up to 3A.

Technical Context

The MAX77540QEVKIT# implements the MAX77504AAFC+ in its FC2QFN-12 package with full external component support including BST capacitor, input/output bulk and ceramic capacitors, and a 1.5μH power inductor. It integrates configurable RSEL resistor network (via jumpers J3–J5) to set switching frequency, mid-band gain (RCOMP), and active discharge enable state per the IC's 5-bit decoding scheme.

Test points (SUPS/GNDS, OUTS/GNDS, FPWM, EN, POK) and shunt jumpers (J1–J7) allow direct measurement and functional mode selection-Skip Mode default (J2: 2–3), FPWM enabled (J2: 1–2), EN tied to VIN (J1: 1–2), and POK enabled (J7: 1–2). The board accepts 20AWG twisted-pair connections for stable input/output delivery.

Key Specifications

Availability

MAX77540QEVKIT# is available at Aetrix Electronics and suitable for DC-DC converter validation, power management subsystem prototyping, and buck regulator qualification requiring stable component supply, traceable sourcing, and documented reference design implementation.

Supply support for MAX77540QEVKIT# 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, computing, communications, and consumer applications.

The MAX77540QEVKIT# belongs to Maxim's power management evaluation platform family, engineered to accelerate development of compact, high-efficiency DC-DC converters targeting space-constrained portable and battery-operated systems.

FAQ

What does the MAX77540QEVKIT# evaluate?

The MAX77540QEVKIT# evaluates the MAX77504AAFC+, a 3A synchronous buck converter IC in FC2QFN-12 package. It provides a fully assembled, tested reference design with configurable output voltage (0.6V–6V), selectable switching frequency (500kHz–1.5MHz), and access to all critical control signals including EN, FPWM/SYNC, and POK. The MAX77540QEVKIT# is not a standalone power module but a dedicated evaluation platform for the MAX77504 IC.

How is output voltage configured on the MAX77540QEVKIT#?

Output voltage on the MAX77540QEVKIT# is set by the feedback resistor divider formed by R3 (49.9kΩ) and R4 (11.1kΩ), yielding a factory-default 3.3V. To change the output, replace R3 and/or R4 with values calculated using the MAX77504's V_OUT = 0.6V × (1 + R3/R4) equation. The board includes solder pads and test points to support rework and verification without redesign.

Can the MAX77540QEVKIT# be synchronized to an external clock?

Yes, the MAX77540QEVKIT# supports external clock synchronization via the FPWM/SYNC pin (J2 Pin 2 or FPWM test point). When an external clock within the valid lock range-dependent on the RSEL-selected internal switching frequency-is applied, the MAX77504 enters forced-PWM mode with synchronized switching. This capability is verified and accessible without hardware modification.

What are the jumper functions on the MAX77540QEVKIT#?

The MAX77540QEVKIT# uses six shunt jumpers: J1 controls EN (1–2 = enabled to VIN); J2 selects FPWM (1–2) or Skip Mode (2–3, default); J3–J5 configure RSEL via potentiometer or discrete resistors; J7 enables the Power-OK indicator. All jumper positions and their circuit roles are documented in Table 1 of the official EV kit user guide.

Does the MAX77540QEVKIT# include the MAX77504 IC?

Yes, the MAX77540QEVKIT# includes one pre-soldered MAX77504AAFC+ IC in the FC2QFN-12 package (U1 on the bill of materials). The IC is fully populated, tested, and integrated into the reference circuit with supporting components including L1 (1.5μH inductor), C1/C5/C6/C7 (bulk capacitors), and C3/C4/C13 (ceramic bypass/filter elements).