Monolithic Power Systems Inc. EV26058DQ-00A

Overview

EV26058DQ-00A from Monolithic Power Systems is an evaluation board for the MP26058DQ linear single-cell Li-ion battery charger IC, supporting 5V input, 0.8A programmable charge current, 4.2V CV output, 28V surge tolerance, and integrated battery temperature monitoring for portable power management in compact consumer devices.

For engineers reviewing the EV26058DQ-00A datasheet, EV26058DQ-00A pinout, EV26058DQ-00A application, or EV26058DQ-00A equivalent, this board enables rapid validation of CC/CV charging behavior, thermal foldback response, trickle-to-full charge transition timing, and adapter power-good signaling under real-world input transients and load conditions.

Technical Context

The EV26058DQ-00A implements a fully assembled reference design for the MP26058DQ QFN10 charger IC, with discrete jumpers (JP1–JP3) enabling selection among five charge currents (200mA–1A), a dedicated timer capacitor (C5) for charge timeout, and resistor R11 setting battery full detection threshold (IBF = 1700/R11).

It integrates dual LED status indicators (green = VIN present, red = charging active), reverse-polarity protection to –16V, 7V input overvoltage clamp, soft-start circuitry, and NTC-based battery temperature monitoring via the U1 NTC pin - all mapped to accessible test points and header pins for system-level debugging.

Key Specifications

Availability

EV26058DQ-00A is available at Aetrix Electronics and suitable for battery-powered portable electronics development, Li-ion charger reference design validation, and embedded power subsystem qualification requiring stable component supply and documented thermal performance under sustained charge loads.

Supply support for EV26058DQ-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 consumer, industrial, and automotive markets.

The MP26058 product line delivers highly integrated linear Li-ion chargers optimized for space-constrained, low-noise applications where simplicity, reliability, and robust surge immunity outweigh efficiency trade-offs - targeting smartphones, wearables, and medical handhelds.

FAQ

What input voltage sources are supported by the EV26058DQ-00A?

The board accepts 2.8V–7V DC input, validated for standard 5V USB power supplies and regulated wall adapters. It tolerates up to 28V transient surges without damage due to internal high-voltage protection circuitry in the MP26058DQ IC, eliminating need for external clamping components.

How is charge current configured on this evaluation board?

Charge current is set using three 2-pin jumpers (JP1, JP2, JP3) in binary-coded combinations per the quick-start guide: e.g., JP1+JP2 closed = 800mA, JP1+JP2+JP3 closed = 1000mA. Each configuration directly programs the ISET pin bias network on the MP26058DQ, enabling repeatable, no-solder current selection.

Does the board provide battery temperature monitoring capability?

Yes - the board exposes the NTC pin of the MP26058DQ IC to a test point and includes R11 (20kΩ) as the default pull-up for a standard 10kΩ NTC thermistor. Battery temperature data is used internally for charge suspension below 0°C or above 45°C, per JEITA-compliant charging profiles.

What does the red LED indicate during operation?

The red LED (LED2) illuminates only when the MP26058DQ is actively delivering charge current in constant-current mode or transitioning to constant-voltage mode. It extinguishes upon reaching full-charge termination (IBF threshold met), thermal shutdown, or absence of a connected battery - providing unambiguous real-time charge state feedback.

Can the EV26058DQ-00A be used to evaluate LDO mode functionality?

Yes - when charging is disabled (SHDN pin pulled low) and a valid input is applied, the MP26058DQ enters LDO mode, regulating VOUT to 4.2V with up to 1A output current. The board's layout and component selection (e.g., C4, C5) support stable LDO operation, verified in the schematic and bill of materials.

Is reverse polarity protection implemented on this board?

Yes - the MP26058DQ IC incorporates internal reverse-input protection down to –16V, and the EV26058DQ-00A board routes VIN through this integrated feature without additional diodes or MOSFETs. This protects both the charger IC and downstream circuitry during accidental reverse connection of input power.