Analog Devices Inc./Maxim Integrated MAX77597EVKIT#

Overview

MAX77597EVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit for the MAX77597 synchronous step-down converter IC with integrated switches. It operates from 3.5V to 36V input, delivers up to 300mA load current, features 1.1µA quiescent current at 14V input, includes jumper-selectable FPWM/skip mode, and provides RESETB test point monitoring - designed for rapid validation of low-I_Q buck converter performance in space-constrained industrial and portable power applications.

For engineers reviewing the MAX77597EVKIT# datasheet, MAX77597EVKIT# pinout, MAX77597EVKIT# application, or MAX77597EVKIT# equivalent, this kit enables hands-on characterization of input range, load regulation, enable control, mode selection, and output voltage monitoring without custom PCB development.

Technical Context

The MAX77597EVKIT# implements the MAX77597ETBB+ (TDFN-10-EP) buck converter in fixed 3.3V output configuration, supporting wide-input operation (3.5V–36V) and ultra-low 1.1µA quiescent current at no load. It uses discrete external components including a 10µH shielded inductor (DFE252012F-100M), 4.7µF/16V and 22µF/10V ceramic input/output capacitors, and 0Ω R4 for fixed-output setup.

Jumper J1 controls EN logic level (VIN or GND), while J2 selects MODE pin connection (BIAS for forced-PWM or GND for skip mode). The RESETB test point connects directly to the IC's open-drain RESET output, asserting low when VOUT drops below 90% of nominal and releasing high-impedance above 92% - enabling system-level power-good monitoring.

Key Specifications

Availability

MAX77597EVKIT# is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, battery-powered telemetry modules, and low-power embedded controllers requiring stable component supply and validated reference design support.

Supply support for MAX77597EVKIT# 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 industrial, automotive, and computing applications.

The MAX77597 product line targets ultra-low-quiescent-current DC-DC conversion in battery-critical systems, emphasizing minimal standby power loss and robust operation across wide input ranges.

FAQ

What is the default output voltage configured on the MAX77597EVKIT#?

The MAX77597EVKIT# ships with the MAX77597ETBB+ installed, which is the 3.3V fixed-output version of the IC. No external feedback resistors are populated - R4 is a 0Ω shunt, and R3 is left open. This configuration delivers a regulated 3.3V output across the full input range and load conditions specified in the evaluation kit documentation.

Can the MAX77597EVKIT# be used to evaluate the adjustable-output version of the MAX77597?

Yes, the MAX77597EVKIT# supports evaluation of the adjustable-output version (MAX77597ETBC+) by replacing U1 and removing the 0Ω resistor at R4. With R3 and R4 populated per the formula R4 = R3 × [(VOUT/VFB) − 1] (VFB = 1V), output voltages from 1V to 10V can be set. C8 (5.6pF feed-forward capacitor) is preinstalled and required for stability in adjustable mode.

How do I configure forced-PWM mode on the MAX77597EVKIT#?

To configure forced-PWM mode on the MAX77597EVKIT#, install a shunt on pins 1–2 of jumper J2. This connects the MODE pin to the BIAS supply, overriding skip-mode behavior and ensuring continuous switching regardless of load - useful for noise-sensitive applications where frequency stability and EMI predictability are critical during MAX77597EVKIT# testing.

What does the RESETB test point indicate on the MAX77597EVKIT#?

The RESETB test point on the MAX77597EVKIT# provides direct access to the MAX77597's open-drain RESET output. It goes low when VOUT falls below 90% of nominal (e.g., <2.97V for 3.3V output) and releases to high-impedance (pulled to BIAS via R1) when VOUT rises above 92% (e.g., >3.04V), enabling reliable power-good signaling for host microcontrollers during MAX77597EVKIT# validation.

Is the MAX77597EVKIT# fully assembled and ready for immediate use?

Yes, the MAX77597EVKIT# is fully assembled and factory-tested. It includes all passive components (Murata capacitors, TOKO inductor, Vishay/Yageo resistors), jumpers J1/J2, test points (VIN, VOUT, GND1, GND2, RESETB), and the pre-soldered MAX77597ETBB+ IC. No soldering or component placement is required before initial power-up and functional verification per the Quick Start guide.