Monolithic Power Systems Inc. EV26053DQ-00A

Overview

EV26053DQ-00A from Monolithic Power Systems is a fully assembled and tested evaluation board for the MP26053 linear single-cell Li-Ion battery charger IC, supporting 5V input, 0.8A programmable charge current, 4.2V CV regulation, and integrated AC adapter power-good and charge-status LED indicators. It enables rapid validation of battery charging in portable electronics with thermal protection, battery temperature monitoring, and 28V input surge tolerance.

For engineers reviewing the EV26053DQ-00A datasheet, EV26053DQ-00A pinout, EV26053DQ-00A application, or EV26053DQ-00A equivalent, this board provides immediate hardware access to MP26053's CC/CV charging control, timer-based full-charge termination, reverse current blocking, and NTC-based battery temperature supervision - all with jumper-selectable charge currents (200mA–1A) and preconfigured 4.2V output.

Technical Context

The EV26053DQ-00A implements the MP26053's complete charging algorithm on a compact 5.0cm × 4.8cm PCB, using external jumpers (JP1–JP3) to configure charge current via ISET resistor selection. It routes all critical signals - including BAT, NTC, SD, TMR, and CHG - to accessible test points and headers for real-time monitoring and system integration.

Board-level features include dual-color status LEDs (green = VIN present, red = charging), 0.75% battery voltage accuracy, 28V tolerant input protection, and support for 3.5V–6.5V input range. The QFN10-packaged MP26053DQ is soldered and verified, with decoupling capacitors (C1–C5), current-setting resistors (R6–R7), and NTC interface circuitry fully populated per Rev. 1.0 schematic.

Key Specifications

Availability

EV26053DQ-00A is available at Aetrix Electronics and suitable for battery management validation, portable device power subsystem development, and Li-Ion charging algorithm testing requiring stable component supply and documented reference design fidelity.

Supply support for EV26053DQ-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 converters, battery chargers, LED drivers, and motor drivers.

The MP26053 product line delivers highly integrated linear Li-Ion chargers for space-constrained portable applications, emphasizing robust input surge tolerance, precision voltage regulation, and system-level status signaling - targeting smartphones, wearables, and medical handhelds.

FAQ

What input voltage range does the EV26053DQ-00A support?

The board accepts 3.5 V to 6.5 V DC input, validated for standard 5 V USB and AC adapter sources. Its underlying MP26053 IC tolerates transient surges up to 28 V, but sustained operation must remain within the 3.5–6.5 V range to ensure proper CC/CV regulation and thermal safety.

How is charge current configured on this evaluation board?

Charge current is set using three 2-pin jumpers (JP1, JP2, JP3) to select discrete ISET resistor values (R6 = 3.6 kΩ, R7 = 8.66 kΩ, etc.), enabling five fixed current levels: 200 mA, 500 mA, 700 mA, 800 mA, and 1000 mA - as defined in the Quick Start Guide Table on page 4 of Rev. 1.0.

Does the board provide battery temperature monitoring capability?

Yes - the EV26053DQ-00A includes a dedicated NTC thermistor interface (labeled "NTC" on U1 pin 5) with pull-up resistor network, allowing connection of standard NTC thermistors for real-time battery temperature supervision and charge suspension outside safe thermal limits.

What do the green and red LEDs indicate during operation?

The green LED (LED1) illuminates when valid 5 V input is applied to VIN; it extinguishes upon disconnection. The red LED (LED2) lights only during active constant-current or constant-voltage charging, and turns off automatically when charging completes, battery is disconnected, or fault conditions (e.g., overtemperature) occur.

Is the MP26053DQ IC on this board pre-programmed or configurable?

The MP26053DQ is a fixed-function analog IC with no firmware or digital configuration. All behavior - including CV voltage (4.2 V), charge termination method (timer + voltage foldback), and safety thresholds - is determined by external passive components (resistors, capacitors, NTC) and cannot be altered via software or registers.

Can this board be used to charge batteries other than single-cell Li-Ion?

No - the MP26053 is designed exclusively for single-cell (4.2 V nominal) Li-Ion/Li-Polymer batteries. Its 4.2 V CV setting, charge termination logic, and safety thresholds are not adjustable for multi-cell, LiFePO₄, or NiMH chemistries, and using it with incompatible cells risks undercharging or unsafe operation.