Monolithic Power Systems Inc. EV2604DQ-00A

Overview

EV2604DQ-00A from Monolithic Power Systems is an evaluation board for the MP2604DQ linear single-cell Li-Ion battery charger IC, supporting 5V input, 0.8A programmable CC/CV charging, 4.2V termination voltage, 28V input surge tolerance, and real-time charge status indication via dual LEDs. It enables rapid validation of battery charging circuits in portable electronics.

For engineers reviewing the EV2604DQ-00A datasheet, EV2604DQ-00A pinout, EV2604DQ-00A application, or EV2604DQ-00A equivalent, this board provides pre-assembled, tested hardware to verify MP2604DQ integration-including jumper-configurable charge current (200–1000mA), NTC-based temperature monitoring, reverse current blocking, and ACOK/CHG signal routing-without custom PCB development.

Technical Context

The EV2604DQ-00A implements the MP2604DQ QFN10 charger IC with integrated high-voltage input protection, enabling operation up to 28V transient input while regulating 5V nominal supply. It delivers constant-current (up to 1A) and constant-voltage (4.2V ±1%) charging with programmable termination threshold (via R5) and thermal foldback.

Board-level features include dual-color LED status indicators (green = input present, red = charging active), selectable VIN/BAT sourcing for LEDs via JP4, and three jumpers (JP1–JP3) that configure I_CHG across five discrete values (200/500/700/800/1000mA) using resistor networks on the BOM.

Key Specifications

Availability

EV2604DQ-00A is available at Aetrix Electronics and suitable for cell phone, digital camera, and smart handheld device design validation requiring stable component supply, fast prototyping turnaround, and production-ready reference implementation.

Supply support for EV2604DQ-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 expertise in DC/DC conversion, battery management, and motor control solutions.

The MP2604 product line delivers highly integrated linear Li-Ion chargers targeting space-constrained portable devices where simplicity, surge robustness, and accurate CV/CC regulation are critical-eliminating need for external MOSFETs or complex loop compensation.

FAQ

What input voltage range does the EV2604DQ-00A support?

The board accepts 5 V nominal input but incorporates the MP2604DQ's integrated high-voltage protection, allowing it to survive transient surges up to 28 V without damage. This enables compatibility with unregulated wall adapters or automotive USB sources where voltage spikes may occur during hot-plug or load dump events.

How is charge current configured on this evaluation board?

Charge current is set using three 2-pin jumpers (JP1, JP2, JP3) in combinations defined in the Quick Start Guide: open/closed states select discrete values of 200 mA, 500 mA, 700 mA, 800 mA, or 1000 mA. Each setting routes specific resistor networks to the ISET pin of the MP2604DQ to program the CC stage.

Does the board support battery temperature monitoring?

Yes-the EV2604DQ-00A exposes the NTC pin of the MP2604DQ and includes a dedicated test point and routing for connecting an external NTC thermistor. The IC uses this input to enable or disable charging based on measured battery temperature, complying with JEITA guidelines for safe Li-Ion operation.

What do the two LEDs indicate during operation?

LED1 (green) illuminates when 5 V input is applied and stable-confirming adapter presence. LED2 (red) lights only during active constant-current or constant-voltage charging; it extinguishes when charging completes, battery is disconnected, or fault conditions (e.g., overtemperature) halt charging.

Can the board be used with batteries other than 4.2V Li-Ion?

No-the MP2604DQ is factory-trimmed for 4.2 V ±1% termination voltage and lacks user-adjustable voltage programming. It is designed exclusively for standard single-cell Li-Ion or Li-Polymer batteries. Using it with higher- or lower-voltage chemistries risks undercharging or overvoltage damage.

Is the EV2604DQ-00A RoHS-compliant and lead-free?

Yes-the board uses RoHS-compliant components and lead-free solder per MPS documentation (Rev. 1.1, October 2007). All listed BOM parts-including Murata, TDK, Panasonic, and Lumex devices-meet JEDEC J-STD-609 Class 1 marking requirements for lead-free finish and halogen-free materials.