Monolithic Power Systems Inc. EV2671DL-00A

Overview

EV2671DL-00A from Monolithic Power Systems is an evaluation board for the MP2671 high-voltage battery charger protection IC, supporting input surge tolerance up to 28V, 1A charge current limit, and integrated OVP/BOVP/OCP/OTP protections. It enables rapid validation of battery charging safety circuitry in portable electronics with fully assembled QFN12 layout and fault-indicating WRN pin.

For engineers reviewing the EV2671DL-00A datasheet, EV2671DL-00A pinout, EV2671DL-00A application, or EV2671DL-00A equivalent, this board provides verified hardware reference for MP2671 integration-covering input surge handling, programmable current limiting via RLIM, thermal shutdown response, and fault signaling through open-drain WRN output.

Technical Context

The EV2671DL-00A implements a complete hardware test platform for the MP2671 protection IC, which operates as a front-end safety supervisor between DC input and Li-ion battery charging circuitry. It validates real-time response to 28V input surges, sub-1µs input OVP triggering, and battery overvoltage detection at 4.4V threshold via VB pin.

Board-level design includes fixed 1A current limit (set by 24.9kΩ RLIM), EN pin control interface (0.4V low-enable / 1.5V high-disable), and open-drain WRN output pulled to VIN via 100kΩ R1-enabling system-level fault flagging without external logic.

Key Specifications

Availability

EV2671DL-00A is available at Aetrix Electronics and suitable for battery management validation, portable charger design verification, and Li-ion protection circuit qualification requiring stable component supply and documented reference hardware.

Supply support for EV2671DL-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, battery management, and motor control solutions.

The MP2671 product line delivers integrated battery charger protection for space-constrained portable devices, combining high-voltage surge resilience, fast-fault response, and minimal external component count for single-cell Li-ion systems.

FAQ

What input voltage range does the EV2671DL-00A support during evaluation?

The board supports 2.7V to 28V DC input, with automatic startup above 2.7V and shutdown below 2.4V. Input OVP triggers at >6V, forcing OUT to 0V-validating MP2671's internal 6V threshold and 1µs response time as specified in the MP2671 datasheet Rev. 1.0.

How is the 1A charge current limit implemented on this board?

The 1A limit is set by the 24.9kΩ resistor (R3) connected to the ILIM pin of U1 (MP2671DL), using the formula I_LIM = 8.0V / (31.25 mV/A × R_LIM). This matches the MP2671's internal 8.0V reference and 31.25 mV/A current-sense gain, yielding exactly 1.00 A.

What does the WRN pin indicate, and how is it used on this board?

WRN is an open-drain fault indicator that pulls LOW during OVP, BOVP, OCP, or OTP events. On this board, it is pulled up to VIN via 100kΩ R1 (labeled R1 in BOM), providing a system-ready fault flag without additional level-shifting or buffering components.

Can the EV2671DL-00A be used to evaluate battery overvoltage protection behavior?

Yes-the board routes the VB pin to BAT through a placeholder location for RVB (recommended 200kΩ–1MΩ). When VB exceeds 4.4V, MP2671 forces OUT to 0V. This behavior is observable using a voltmeter on OUT and monitoring WRN state during controlled battery voltage ramping.

Is the EN pin preconfigured for automatic startup or external control?

The EN pin is left floating by default, enabling automatic startup when VIN exceeds 2.7V. For external control, drive EN <0.4V to enable or >1.5V to disable-verified via the board's uncommitted EN test point and compatibility with standard logic-level signals.

Does the board include all passive components required for MP2671 operation?

Yes-the BOM lists C1, C2, R1, R2, R3, and CIN as populated, covering input/output filtering, EN pull-up, VB scaling, and ILIM programming. No additional passives are needed to evaluate core MP2671 protection functions per the Quick Start Guide.