Analog Devices Inc./Maxim Integrated MAX25300EVKIT#

Overview

MAX25300EVKIT# from Maxim Integrated is an evaluation kit designed to characterize the MAX25300A and MAX25300B low-noise linear regulators in 8-pin TDFN (2mm × 2mm) package. It provides two independent test circuits, supports 1.7V–5.5V input, delivers up to 500mA output current per channel, and enables jumper-configurable output voltages from 1.2V to 5.0V (MAX25300A) or resistor-configurable outputs from 0.6V to 5.3V (MAX25300B), used for validating ultra-low-noise power delivery in precision analog and automotive subsystems.

For engineers reviewing the MAX25300EVKIT# datasheet, MAX25300EVKIT# pinout, MAX25300EVKIT# application, or MAX25300EVKIT# equivalent, this board supports rapid validation of LDO noise performance (12µV_RMS, 10Hz–100kHz), dropout behavior (100mV at 500mA), and configurable enable/POK signaling - critical for medical sensors, ADAS camera rails, and high-precision data converters.

Technical Context

The MAX25300EVKIT# implements dual independent evaluation paths: one pre-populated with MAX25300AATA/V+ for immediate jumper-based testing, and a second footprint supporting MAX25300B replacement with external feedback resistors. Both circuits use identical 2-layer PCB layout optimized for low-noise measurement integrity, including dedicated ground planes, minimized trace inductance, and strategically placed test points (IN, OUT, POK, GND).

Hardware-level control includes JU101 for EN enable/disable, SELA/SELB jumpers for discrete output voltage selection (1.2V–5.0V), and provision for R101/R102 resistor network reconfiguration to evaluate MAX25300B's full 0.6V–5.3V range. The board integrates terminal posts, 0603 passive components, and shuntable test points for in-circuit probing without soldering.

Key Specifications

Availability

MAX25300EVKIT# is available at Aetrix Electronics and suitable for power integrity validation, LDO qualification, and low-noise rail design requiring stable component supply across medical instrumentation, automotive camera modules, and industrial IoT edge nodes.

Supply support for MAX25300EVKIT# 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 demanding applications in automotive, industrial, and communications systems.

The MAX25300 product line targets ultra-low-noise, high-PSRR LDOs for noise-sensitive analog signal chains - specifically engineered for imaging sensors, high-resolution data converters, and radar receivers where supply ripple directly impacts SNR.

FAQ

What devices does the MAX25300EVKIT# evaluate?

The MAX25300EVKIT# evaluates the MAX25300A and MAX25300B low-noise linear regulators. It ships with the MAX25300AATA/V+ pre-installed on the TDFN circuit, while the same footprint supports direct replacement with the MAX25300BATA/V+ for extended output voltage testing (0.6V–5.3V). Both variants share identical pinout, package, and core specifications - only feedback configuration differs.

Does the MAX25300EVKIT# require external components to operate out-of-box?

No - the MAX25300EVKIT# is fully assembled and tested. With the pre-installed MAX25300AATA/V+, it operates immediately when supplied 1.7V–5.5V DC input and configured via default jumper positions (JU101 = 1–2, SELA/SELB = 1–2). Only evaluation of MAX25300B requires component replacement (U101), addition of R101/R102, and jumper reconfiguration per the EV kit documentation.

What output voltage options are supported on the MAX25300EVKIT# without modifying components?

With the pre-installed MAX25300AATA/V+, the MAX25300EVKIT# supports jumper-selectable output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5.0V using SELA and SELB jumpers as defined in Table 2 of the user guide. No soldering or resistor changes are needed - all configurations are accessible via shunt placement alone.

How is power-good (POK) functionality verified on the MAX25300EVKIT#?

On the MAX25300EVKIT#, the POK signal is accessible at the dedicated POK test point. When evaluating the MAX25300A, POK is internally enabled; for MAX25300B evaluation, a 100kΩ pull-up resistor (R103) must be installed to activate open-drain POK, which asserts low when output reaches regulation. The test point allows oscilloscope or logic analyzer monitoring without loading the signal path.

Can the MAX25300EVKIT# be used to measure output noise per the MAX25300 datasheet specification?

Yes - the MAX25300EVKIT# is designed for accurate low-noise measurement. Its 2-layer PCB layout, dedicated ground planes, low-inductance routing, and inclusion of test points (TP_OUT, TP_GND_OUT) minimize probe-induced artifacts. When paired with a low-noise measurement setup (e.g., battery-powered source, spectrum analyzer with 50Ω termination), the MAX25300EVKIT# validates the 12µV_RMS (10Hz–100kHz) noise spec of the MAX25300AATA/V+ as stated in the official datasheet.