Analog Devices Inc./Maxim Integrated MAX38911EVK#WLP

Overview

MAX38911EVK#WLP from Maxim Integrated is a fully assembled and tested evaluation kit designed to characterize the MAX38911 low-noise, high-PSRR pMOS linear regulator in 6-ball WLP packaging. It supports 1.7V–5.5V input, delivers up to 500mA at factory-preset 1.8V output, and enables mode selection (Normal/Low-Power) via jumpers JU1 and JU2 for real-world LDO validation in power-sensitive applications.

For engineers reviewing the MAX38911EVK#WLP datasheet, MAX38911EVK#WLP pinout, MAX38911EVK#WLP application, or MAX38911EVK#WLP equivalent, this EV kit provides verified 2-layer PCB layout, jumper-configurable operating modes, factory-installed MAX38911ANT+, and direct access to IN/GND/OUT terminal posts for rapid noise, PSRR, dropout, and quiescent current measurement under load.

Technical Context

The MAX38911EVK#WLP implements the MAX38911's full functional interface: EN (jumper JU1) controls regulator enable/disable; MODE (jumper JU2) selects Normal mode (500mA output, 11µVRMS noise, 70dB PSRR @10Hz) or Low-Power mode (20mA limit, 19.2µA no-load IQ). Input-to-output headroom is validated at 62mV under full load.

Hardware design follows Maxim's minimal-component reference topology: single 0.01µF BYP capacitor, dual 4.7µF output capacitors, banana-jack terminals for IN/GND/OUT, and a proven 1oz copper 2-layer layout optimized for low-noise LDO evaluation - all pre-assembled and tested per Rev 0 (August 2020).

Key Specifications

Availability

MAX38911EVK#WLP is available at Aetrix Electronics and suitable for LDO characterization, power-rail validation, low-noise analog supply design, and battery-powered system development requiring stable component supply and fast-turn evaluation capability.

Supply support for MAX38911EVK#WLP 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 industrial, automotive, and communications applications.

The MAX38911 product line delivers ultra-low-noise, high-PSRR pMOS LDOs targeting noise-sensitive analog/RF subsystems, portable medical devices, and battery-operated instrumentation where clean, efficient voltage regulation is critical.

FAQ

What is the primary function of the MAX38911EVK#WLP?

The MAX38911EVK#WLP is a ready-to-use evaluation platform for the MAX38911 low-noise pMOS LDO. It allows engineers to measure key performance metrics-including output noise (11µVRMS), PSRR (70dB @10Hz), dropout (62mV), and quiescent current (19.2µA in LPM)-without designing custom circuitry. The board ships with MAX38911ANT+ installed and jumper-configurable modes.

Does the MAX38911EVK#WLP support adjustable output voltages?

The MAX38911EVK#WLP ships with a factory-preset 1.8V output (MAX38911ANT+), but supports evaluation of other output voltages (0.8V–5.0V in 50mV steps) by replacing U1 with a different MAX38911 variant. The board's minimal-component schematic and layout are compatible with all MAX38911 WLP options, though IC replacement requires rework.

How do I configure Normal vs. Low-Power mode on the MAX38911EVK#WLP?

Use jumper JU2: position 1–2 selects Normal mode (500mA output capability); position 2–3 selects Low-Power mode (20mA limit, 19.2µA no-load IQ). JU1 (position 1–2 enabled) must be set to activate the regulator. Both configurations are validated in the schematic and Quick Start procedure using the provided terminal posts and DVM.

What test equipment is required to operate the MAX38911EVK#WLP?

A 5.5V/1A DC power supply, 500mA electronic load, and digital voltmeter are required. The board features banana-jack terminals (IN, GND, OUT) for direct connection. No soldering or configuration is needed-the MAX38911EVK#WLP is fully assembled and tested, and the Quick Start guide verifies operation within minutes using these standard lab instruments.

Is the PCB layout of the MAX38911EVK#WLP suitable for production reference?

Yes-the MAX38911EVK#WLP uses a proven 2-layer, 1oz copper layout optimized for low-noise LDO performance. Schematic, layout files, and bill of materials are publicly available from Maxim (now Analog Devices). Engineers may directly reuse the layout topology, component placement, and grounding strategy for production designs targeting the MAX38911 or similar pMOS LDOs.