Monolithic Power Systems Inc. EV2611-L-00A

Overview

EV2611-L-00A from Monolithic Power Systems is an evaluation board for the MP2611GL switching battery charger IC, designed to demonstrate dual-input (USB/AC adapter), 2A, 1-cell Li-ion charging with ±0.5% battery voltage accuracy, 1.5MHz switching frequency, and integrated high-side P-MOSFET enabling 100% duty cycle operation near battery voltage.

For engineers reviewing the EV2611-L-00A datasheet, EV2611-L-00A pinout, EV2611-L-00A application, or EV2611-L-00A equivalent, this board enables rapid validation of USB/AC input selection logic, programmable input current limiting (450mA/810mA), CC/CV charge profile accuracy, thermal shutdown behavior, and NTC-based battery temperature monitoring in portable power systems.

Technical Context

The EV2611-L-00A implements a complete reference design for the MP2611GL, a synchronous buck switching charger supporting two independent input paths: ACIN (4.5–6V) for adapter mode and USBIN (4.5–6V) for USB mode. Input source selection is hardware-controlled - ACIN takes priority when both are present.

It validates dual-loop regulation (CC/CV), programmable USB current limit via USBM-pin resistor dividers (R8/R9), built-in charging timer, STAT1/STAT2 status indicators, and NTC thermistor interface for JEITA-compliant battery temperature protection. The board uses QFN14 (3mm × 4mm) MP2611GL with integrated power switches and no external reverse-blocking diode required.

Key Specifications

Availability

EV2611-L-00A is available at Aetrix Electronics and suitable for smart phone power validation, portable terminal battery management development, and media player charging subsystem prototyping requiring stable component supply and documented reference design fidelity.

Supply support for EV2611-L-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 EV2611-L-00A belongs to MPS's evaluation board product line targeting portable Li-ion charging applications, developed to accelerate adoption of their MP2611 family of dual-input switching chargers in space-constrained consumer electronics.

FAQ

What input sources does the EV2611-L-00A support?

The board supports two independent input sources: AC adapter (via ACIN terminal, 4.5–6 V) and USB port (via USBIN terminal, 4.5–6 V). When both are present, ACIN is automatically prioritized as the power source. No software or firmware configuration is required - selection is hardwired.

How is USB input current limit configured on this board?

USB input current limit is set by connecting either R8 (45.3 kΩ) or R9 (82.5 kΩ) from the USBM pin to AGND, selecting 450 mA or 810 mA respectively. These values comply with USB 2.0 and USB 3.0 specifications and are validated using the onboard JP1/JP2 jumpers per the Quick Start Guide.

Does the EV2611-L-00A include battery temperature monitoring capability?

Yes - it features a dedicated NTC terminal with biasing resistors and layout provisions for a thermistor. The MP2611GL monitors NTC voltage to implement JEITA-compliant charge enable/disable based on battery temperature, and this function is fully operational on the board with appropriate NTC component installation.

Can the EV2611-L-00A operate in single-input mode with automatic source detection?

Yes - the board supports single-input operation using the MODE pin. Pulling MODE high selects ACIN mode; pulling low selects USBIN mode. The Quick Start Guide provides a complete BOM and assembly instructions for the optional mode-control circuit (including AM2341P MOSFET and S8050 transistor) to demonstrate this functionality.

What is the role of the STAT1 and STAT2 pins on the EV2611-L-00A?

STAT1 and STAT2 are open-drain status outputs that drive onboard LEDs (LED1 and LED2) to indicate real-time charger state: charging active, charge complete, fault condition, or standby. Their behavior is directly tied to MP2611GL internal state machine and requires no external logic.

Is an external reverse-blocking diode required when using this evaluation board?

No - the MP2611GL integrates a high-side P-MOSFET switch, eliminating the need for an external reverse-blocking diode. This reduces BOM count, PCB area, and conduction losses, and the board layout reflects this integration with no diode footprint in the primary power path.