Monolithic Power Systems Inc. EV6412-QGU-00A

Overview

EV6412-QGU-00A from Monolithic Power Systems is an evaluation board for the MP6412GQGU ultra-low IQ load switch controller, designed to validate power sequencing, factory-programmable reset timing, and PMOS gate drive in mobile applications. It supports 2.2V–12V input, delivers up to 1.5A output current, integrates auto 300Ω output discharge, and features <1µA shipping mode current in a 10-pin UTQFN (1.4mm × 1.8mm) package.

For engineers reviewing the EV6412-QGU-00A datasheet, EV6412-QGU-00A pinout, EV6412-QGU-00A application, or EV6412-QGU-00A equivalent, this board enables rapid validation of reset delay behavior, charger-insert detection, system discharge path control, and OFF/RST0/RST1/TAIN signal interaction under real VIN conditions.

Technical Context

The EV6412-QGU-00A implements a hardware-based power sequencing solution using discrete push-button inputs (RST0, RST1, TAIN) and logic-controlled outputs (SRO, DCHG0, DCHG1) to manage startup, shutdown, and reset assertion timing. Its on-board AM4407P P-channel MOSFET handles 13mΩ R_DS(on) switching at −30V, while C1/C2 (10µF X5R) provide stable input/output decoupling per MPS layout guidelines.

Reset timing is factory-fixed and verified via dual-channel oscilloscope waveforms showing RST0-first and RST1-first sequences with SRO assertion, and shipping mode entry/exit is triggered by OFF + RST0 or OFF + TAIN combinations - all validated at VIN = 3.6V and TA = 25°C per Rev. 1.1 test data.

Key Specifications

Availability

EV6412-QGU-00A is available at Aetrix Electronics and suitable for mobile phone reference design validation, wearable device power architecture prototyping, and portable/handheld system-level reset timing verification requiring stable component supply and documented test conditions.

Supply support for EV6412-QGU-00A 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC/DC conversion, load switching, and timing control solutions for battery-powered systems.

The MP6412 product line targets space-constrained mobile platforms requiring ultra-low quiescent current (<2µA), integrated reset sequencing, and robust shipping mode control - directly addressing smartphone and tablet power rail enablement challenges.

FAQ

What is the purpose of the TAIN button on EV6412-QGU-00A?

TAIN (Test Access Input) serves as a dedicated trigger for exiting shipping mode and initiating charger-insert detection logic. When pressed with OFF asserted, it forces the MP6412GQGU to resume normal operation and assert DCHG0/DCHG1 signals, enabling validation of charger presence response without external circuitry.

Does EV6412-QGU-00A include the MP6412GQGU IC?

Yes - U1 on the board is the MP6412GQGU in UTQFN-10 package, mounted with standard reflow profile and verified per MPS layout recommendations. The board ships fully assembled with all passive components, including C1/C2 (10µF X5R), R1–R7 (100kΩ/10Ω), and Q1 (AM4407P P-MOSFET).

How is reset timing configured on this evaluation board?

Reset timing is factory-fixed inside the MP6412GQGU IC and cannot be modified externally. The board exposes RST0 and RST1 pins to allow manual or logic-driven selection between two pre-programmed reset sequences, with SRO output waveform capture shown in Figures 1–2 of Rev. 1.1.

Can EV6412-QGU-00A be used to evaluate different P-channel MOSFETs?

No - the board uses a fixed AM4407P (−30V, 13mΩ) in SO-8 package optimized for MP6412's gate drive strength and thermal performance. Substitution requires PCB modification and revalidation of gate charge, rise/fall time, and thermal dissipation per application load.

What are the required power supply settings for initial startup?

Set the external supply to 2.2V–12V (e.g., 3.6V or 5V), connect VIN and GND, then apply power. The MP6412GQGU starts automatically - no external enable signal needed. Ensure OFF is high and RST0/RST1 are deasserted (high) unless testing specific reset or shutdown sequences.

Is the EV6412-QGU-00A RoHS-compliant and halogen-free?

Yes - all components on EV6412-QGU-00A meet MPS green policy requirements: lead-free, halogen-free, and compliant with EU RoHS Directive 2011/65/EU. Full compliance documentation is available on the MPS Quality Assurance webpage.