Monolithic Power Systems Inc. EV2619-V-01A

Overview

EV2619-V-01A from Monolithic Power Systems is an evaluation board for the MP2619 switching Li-ion battery charger IC, designed for power path management in 2- or 3-cell battery systems. It supports 10–24V input, delivers up to 2A charge current at fixed 600kHz switching frequency, and features ±0.75% battery voltage regulation accuracy, thermal shutdown, and battery temperature monitoring.

For engineers reviewing the EV2619-V-01A datasheet, EV2619-V-01A pinout, EV2619-V-01A application, or EV2619-V-01A equivalent, this board enables rapid validation of MP2619-based charging topologies with integrated power path control, real-time status indication via dual LEDs, and configurable charge current (1–2A) via calibrated sense resistors RS1/RS2 and gain-setting resistors RGS1/RGS2.

Technical Context

The EV2619-V-01A implements a synchronous buck-boost topology with internal PMOS power switches (U1: MP2619 in QFN28), supporting both CC (constant-current) and CV (constant-voltage) charging modes via dual-loop regulation. It integrates battery temperature sensing via NTC resistor RNTC and provides dedicated SYS/BATT/VIN domain isolation for true power path operation.

Board-level design includes input overvoltage protection (D2: B340LA Schottky), 4.7µH power inductor (L1), and precision current-sense network (RS1 = 20mΩ, RS2 = 110mΩ) calibrated for 2A output. LED1 indicates AC adapter presence; LED2 signals active charging or fault conditions including full-battery termination and thermal shutdown.

Key Specifications

Availability

EV2619-V-01A is available at Aetrix Electronics and suitable for smart phone battery charging validation, netbook power path integration, and distributed power system prototyping requiring stable component supply and fast-turn evaluation support.

Supply support for EV2619-V-01A 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 MP2619 product line targets portable and space-constrained applications requiring integrated power path management, precise Li-ion charging, and robust thermal/battery safety monitoring - enabling seamless transition between input power and battery sources without system interruption.

FAQ

What battery configurations does the EV2619-V-01A support?

The board supports both 2-cell (8.4V nominal) and 3-cell (12.6V nominal) Li-ion battery packs. Configuration is selected by connecting the Cell pin to VREF33 (for 3S) or leaving it unconnected (default 2S). This hardware-selectable mode ensures safe, accurate voltage regulation without firmware changes.

How is charge current set on this evaluation board?

Charge current is set using a calibrated two-resistor network: RS2 (main sense resistor) and RGS1/RGS2 (gain-setting resistors). For 2A output, RS2 = 110mΩ, RGS1 = RGS2 = 280Ω. The formula I_CHG = 200mV / RS2 applies, with calibration compensating for MP2619's internal sense amplifier offset.

What do the two LEDs indicate during operation?

LED1 (green) illuminates when valid input voltage (10–24V) is present at VIN, confirming adapter readiness. LED2 (red) lights during active CC/CV charging and extinguishes upon battery full termination, thermal shutdown, or no battery detection - providing immediate visual fault diagnosis without instrumentation.

Does the board include battery temperature monitoring?

Yes - the board incorporates a 10kΩ NTC thermistor (RNTC) connected to the MP2619's TS pin. This enables real-time battery temperature measurement and automatic charge suspension if thresholds are exceeded, complying with JEITA guidelines for safe Li-ion charging across ambient conditions.

Can the EV2619-V-01A be used for power path management verification?

Yes - the board implements full power path functionality: it simultaneously powers the system load (SYS) from VIN while charging the battery (BATT), and seamlessly transitions to battery-only operation when input is removed. This validates uninterrupted system operation critical for portable devices.

Is external programming or firmware required to operate the board?

No - the EV2619-V-01A operates autonomously using the MP2619's built-in state machine. All charging parameters (voltage, current, safety limits) are configured passively via resistors and jumpers. No MCU, USB interface, or configuration software is needed for basic evaluation.