Analog Devices Inc./Maxim Integrated MAX38912EVK#TDFN

Overview

MAX38912EVK#TDFN from Analog Devices is an evaluation kit designed to validate the MAX38912 pMOS low-noise linear regulator in its 2mm × 2mm, 8-pin TDFN package. It supports input voltage from 1.7V to 5.5V, delivers up to 500mA output current, and provides externally adjustable output voltage (0.8V–5.0V) via feedback resistors - enabling rapid prototyping of power-supply designs for noise-sensitive analog circuits.

For engineers reviewing the MAX38912EVK#TDFN datasheet, MAX38912EVK#TDFN pinout, MAX38912EVK#TDFN application, or MAX38912EVK#TDFN equivalent, this EV kit serves as a fully assembled, tested reference platform for evaluating PSRR (70dB at 10Hz), output noise (11μVRMS, 10Hz–100kHz), headroom (62mV at full load), and dual-mode operation (Normal/Low-Power).

Technical Context

The MAX38912EVK#TDFN implements a minimal external-component configuration of the MAX38912 LDO, using only two feedback resistors (R1 = 200kΩ, R2 = 301kΩ) to set a default 1.0V output. Jumper-controlled EN (JU1) and MODE (JU2) terminals allow hardware-level enable/disable and Normal (500mA) vs. Low-Power Mode (20mA, 19.2μA IQ) selection without firmware changes.

It integrates banana-jack input/output connections, test points for POK monitoring, and a proven 2-layer, 1oz copper PCB layout optimized for low-noise performance. The board ships with the MAX38912ATA+ installed - the production-grade variant qualified for industrial temperature range and RoHS compliance.

Key Specifications

Availability

MAX38912EVK#TDFN is available at Aetrix Electronics and suitable for power-management validation, LDO qualification testing, and low-noise analog supply design requiring stable component supply, traceable sourcing, and documented reference performance.

Supply support for MAX38912EVK#TDFN 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and healthcare markets.

The MAX38912EVK#TDFN belongs to Analog Devices' precision power management evaluation platform family, engineered to accelerate development of ultra-low-noise, high-PSRR power supplies for sensitive analog and RF subsystems.

FAQ

What does the MAX38912EVK#TDFN evaluate?

The MAX38912EVK#TDFN evaluates the MAX38912ATA+, a 500mA pMOS low-noise LDO in an 8-pin TDFN package. It provides a ready-to-use platform to measure key parameters including output noise (11μVRMS), PSRR (70dB at 10Hz), input-to-output headroom (62mV), and dual-mode operation - all under real-world PCB conditions with validated layout and components.

How is output voltage configured on the MAX38912EVK#TDFN?

The MAX38912EVK#TDFN ships with R1 = 200kΩ and R2 = 301kΩ, setting a default 1.0V output. To evaluate other voltages between 0.8V and 5.0V, replace R1 and R2 per the MAX38912 datasheet's Output Voltage Configuration section. The board includes pads and silkscreen labels for straightforward resistor swaps without redesign.

What are the jumper functions on the MAX38912EVK#TDFN?

JU1 controls enable/disable: shunt across pins 1–2 enables the MAX38912 (EN tied to IN); shunt across 2–3 disables it (EN tied to GND). JU2 selects operating mode: pins 1–2 configures Normal mode (500mA output), while pins 2–3 activates Low-Power Mode (20mA limit, 19.2μA no-load IQ). Both jumpers are pre-configured to default positions at shipment.

Does the MAX38912EVK#TDFN include the MAX38912 IC?

Yes, the MAX38912EVK#TDFN ships fully assembled with the MAX38912ATA+ installed - the production-qualified version in TDFN-8 packaging, rated for industrial temperature range (−40°C to +125°C) and RoHS-compliant. No soldering or component placement is required to begin evaluation.

Can the MAX38912EVK#TDFN be used to verify Power OK (POK) functionality?

Yes, the MAX38912EVK#TDFN provides a dedicated test point (labeled "POK") to monitor the MAX38912's open-drain Power OK signal. By default, POK is pulled up to OUT via R3; users may reconfigure it to pull up to IN by removing R3 and populating R4 - allowing verification of POK timing and logic behavior under varying load and input conditions.