Monolithic Power Systems Inc. EV2667-G-00A

Overview

EV2667-G-00A from Monolithic Power Systems is an evaluation board for the MP2667 single-cell Li-ion/Li-polymer linear charger IC with integrated power path management, supporting 4.35–5.5 V input, 3.60–4.545 V battery regulation, and I²C-programmable charge parameters including 26–1049 mA fast charge current, ±0.5% voltage accuracy, and battery UVLO down to 2.4 V. It enables simultaneous system powering and battery charging in space-constrained wearable and smart handheld devices.

For engineers reviewing the EV2667-G-00A datasheet, EV2667-G-00A pinout, EV2667-G-00A application, or EV2667-G-00A equivalent, this board provides full hardware access to the MP2667's I²C interface, power path control signals (SYS, BATT, VIN), thermal monitoring, safety timer, and programmable discharge current limit-enabling rapid validation of charge algorithm tuning, input source arbitration, and battery protection behavior in real-world portable systems.

Technical Context

The EV2667-G-00A implements a complete reference design for the MP2667 QFN-10 IC, featuring autonomous three-stage charging (PRE.C → CC → CV), dynamic input current limiting (77–993 mA), and seamless power path arbitration between USB/AC adapter input and battery to maintain uninterrupted SYS rail operation. It supports I²C register-level configuration of all critical charge parameters and fault reporting.

Board-level implementation includes NTC thermistor interface, dedicated INT pin for interrupt-driven status monitoring, dual FET control (EN_HIZ, CEB, FET_DIS), and configurable termination logic via TERM_TMR and EN_TERM bits-enabling precise control over charge completion, auto-recharge, and battery disconnect under UVLO or safety timeout conditions.

Key Specifications

Availability

EV2667-G-00A is available at Aetrix Electronics and suitable for wearable device development, smart handheld prototyping, and fitness accessory validation requiring stable component supply, traceable evaluation hardware, and documented I²C register mapping.

Supply support for EV2667-G-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 power management ICs, with expertise in DC-DC converters, battery chargers, LED drivers, and motor drivers for consumer, industrial, and automotive applications.

The MP2667 product line delivers highly integrated, compact linear chargers with power path management for ultra-thin portable electronics-designed to eliminate external MOSFETs, reduce bill-of-materials count, and simplify thermal design in wearables and IoT endpoints.

FAQ

What is the default battery regulation voltage set on the EV2667-G-00A?

The board ships with MP2667 preset to 4.200 V battery regulation voltage-the standard full-charge threshold for single-cell Li-ion batteries. This value is stored in the VREG register and can be modified via I²C using the MP2667 Evaluation Kit software or direct register writes.

Does the EV2667-G-00A support USB enumeration and current limiting per USB specification?

Yes-it implements programmable input current limiting (77–993 mA) and input minimum voltage regulation (3.88–5.08 V), enabling compliance with USB 2.0/BC1.2 current negotiation. The board uses the MP2667's built-in USB detection and current foldback logic without requiring external USB ID resistors or controllers.

Can the EV2667-G-00A be used to evaluate battery discharge behavior?

Yes-the board supports bidirectional power path operation and includes programmable discharge current limiting (100–1600 mA). When configured in system-power-only mode, it allows characterization of battery-to-SYS discharge efficiency, UVLO hysteresis, and FET DIS control timing under load transients.

Is an external USB-to-I²C adapter required to operate the EV2667-G-00A?

Yes-the board requires the EVKT-USBI2C-02 dongle (or equivalent I²C bridge) to connect to a Windows PC running the official MP2667 Evaluation Kit software. The P1 header provides standard SCL/SDA/GND pins compatible with MPS's certified communication kit.

What thermal protection mechanisms are implemented on the EV2667-G-00A?

The board routes the MP2667's NTC pin to a 10 kΩ thermistor footprint and enables the IC's internal thermal regulation loop. When die temperature exceeds 125 °C, the MP2667 automatically reduces charge current to maintain safe junction temperature-fully observable via I²C register 0x0B (TEMP_STATUS).

How is power path arbitration handled when both VIN and battery are present?

The MP2667 on the EV2667-G-00A continuously monitors VIN, VBATT, and SYS load to dynamically select the optimal power source. It prioritizes VIN to power SYS while charging the battery, switches to battery-only if VIN drops below VIN_MIN, and seamlessly blends both sources during transient load events-ensuring zero SYS rail interruption.