Monolithic Power Systems Inc. EV26056DQ-00A

Overview

EV26056DQ-00A from Monolithic Power Systems is a 28V-tolerant evaluation board for the MP26056DQ single-cell Li-ion/Li-polymer linear battery charger IC, supporting dual-input (AC/USB) with programmable charge current (200–1000 mA), 0.75% V_BAT accuracy, and integrated thermal regulation. It implements CC/CV charging, reverse current blocking, ACOK status signaling, and die temperature limiting for safe operation in space-constrained portable devices.

For engineers reviewing the EV26056DQ-00A datasheet, EV26056DQ-00A pinout, EV26056DQ-00A application, or EV26056DQ-00A equivalent, this board enables rapid validation of MP26056-based charging systems-including USB/AC input auto-selection, battery full threshold programming via R3, MOD-controlled LDO vs. auto-terminate mode, and real-time charge status indication via dual LEDs.

Technical Context

The EV26056DQ-00A implements a complete reference design for the MP26056DQ IC, which operates across 3.5–6.5 V input and delivers up to 1 A charge current with ±0.75% battery voltage regulation. Its jumper-configurable I_CHG (200–1000 mA) and resistor-programmable battery full threshold (IBF) enable precise adaptation to cell chemistry and system power constraints.

Board-level features include input surge protection to 28 V, polarity reversal tolerance down to –16 V, low 120 µA standby current during USB operation, and dual LED indicators (RED = VIN present, GREEN = active charging). The MOD pin selects between LDO mode (MOD = LOW) and auto-terminate/recharge mode (MOD = HIGH).

Key Specifications

Availability

EV26056DQ-00A is available at Aetrix Electronics and suitable for battery management validation, USB/AC dual-input charger development, and Li+ safety compliance testing requiring stable component supply and documented reference design fidelity.

Supply support for EV26056DQ-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 for portable, industrial, and automotive applications.

The MP26056 product line targets compact, dual-input Li+ charging systems-designed specifically for smartphones, digital cameras, and PDAs where input flexibility, thermal safety, and precise voltage regulation are critical.

FAQ

What input voltage range does the EV26056DQ-00A support?

The board accepts 3.5 V to 6.5 V DC input, compatible with standard 5 V USB and AC adapter sources. Its underlying MP26056DQ IC tolerates transient surges up to 28 V, protecting against voltage spikes during hot-plug or source switching events without external TVS diodes.

How is charge current configured on this evaluation board?

Charge current is set using four 2-pin jumpers (JP1–JP4) according to a binary-coded table: 200 mA (JP1 only), 300 mA (JP1+JP2), up to 1000 mA (JP1+JP2+JP3+JP4). Each configuration directly programs the MP26056DQ's ISET1/ISET2 pins per the datasheet's current-sense resistor mapping.

Does the board provide battery temperature monitoring?

No-the EV26056DQ-00A evaluation board does not include a thermistor interface or temperature sensor circuitry. While the MP26056DQ IC supports battery temperature monitoring via an external NTC thermistor connected to the TS pin, that functionality requires user-added components and is not implemented on this board.

What is the purpose of the MOD pin, and how is it controlled?

The MOD pin selects operating mode: logic LOW configures the MP26056DQ as an LDO charger (no auto-termination), while logic HIGH enables full CC/CV charging with auto-termination and re-charging. On the EV26056DQ-00A, MOD is routed to a test point and must be driven externally-no onboard pull-up/down is provided.

Can the battery full threshold be adjusted, and how?

Yes-the battery full threshold (IBF) is set by resistor R3 (20 kΩ default), following the formula I_BF = 1 A × (1.7 kΩ / R3). Replacing R3 allows adjustment of the termination current, enabling optimization for different battery chemistries or aging compensation without firmware changes.

Are the LEDs on the board driven directly by the MP26056DQ?

Yes-LED1 (RED) connects to the ACOK pin and illuminates when valid input voltage is detected; LED2 (GREEN) connects to the CHG pin and lights during active charging. Both are current-limited via onboard resistors and require no external driver circuitry or microcontroller intervention.