Monolithic Power Systems Inc. EV2723-QC-00A

Overview

EV2723-QC-00A from Monolithic Power Systems is an evaluation board for the MP2723 3A I²C-controlled switch-mode battery charger IC, implementing NVDC power path management and USB On-The-Go (OTG) functionality for single-cell Li-ion/Li-polymer systems. It supports 5V input sources including USB hosts and wall adapters, delivers up to 1.5A at 5V in OTG mode, and enables real-time parameter tuning via I²C interface for charge voltage (4.2V default), input current limit (0.5A default), and input voltage regulation (4.3V default).

For engineers reviewing the EV2723-QC-00A datasheet, EV2723-QC-00A pinout, EV2723-QC-00A application, or EV2723-QC-00A equivalent, this board provides validated hardware reference for MP2723 integration-covering NVDC power path behavior, I²C register configuration, OTG boost operation, thermal regulation thresholds (default 120°C), and JEITA-compliant battery temperature monitoring.

Technical Context

The EV2723-QC-00A implements the MP2723's dual-path architecture: a high-efficiency 1.35MHz buck charger (3A max) for battery charging and a selectable 1.35MHz boost converter for 4.8–5.5V OTG output. It validates the IC's integrated ADC for simultaneous monitoring of VIN, IIN, VBATT, ICC, VSYS, and battery temperature with ±2% to ±5% accuracy across domains.

This board demonstrates critical system-level behaviors: instant-on operation with no or deeply discharged battery, ideal diode mode during battery supplement, and DISC-controlled shipping mode activation. Jumper-configurable CE, OTG, and NTC pins allow functional validation of charge enable, OTG enable, and thermistor biasing without soldering.

Key Specifications

Availability

EV2723-QC-00A is available at Aetrix Electronics and suitable for smartphone power subsystem validation, tablet battery management development, and mobile internet device OTG feature testing requiring stable component supply and full-function hardware reference.

Supply support for EV2723-QC-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 power management ICs, with design focus on efficiency, integration, and system-level power optimization for portable and embedded applications.

The MP2723 product line targets single-cell Li-ion/Li-polymer charging in space-constrained portable devices, integrating NVDC power path, USB detection, OTG boost, and comprehensive safety features into one QFN package.

FAQ

What software is required to configure the EV2723-QC-00A?

The MP2723 Evaluation Kit software (Windows XP/7/10+) is mandatory. It communicates via EVKT-USBI2C-02 adapter to read/write registers, set charge parameters (VBATT_REG, IIN_LIM, VIN_MIN), monitor ADC values, and control OTG mode. No standalone firmware or bootloader is needed - all configuration occurs over live I²C session.

Does the board support battery-less system operation?

Yes. The EV2723-QC-00A validates the MP2723's NVDC architecture enabling instant-on behavior: when VIN is applied with no battery or a deeply discharged cell (<2.5 V), SYS voltage powers the load directly through the ideal diode path while the battery charges in parallel - confirmed in test waveforms on page 17 of the reference document.

How is USB OTG mode activated and verified?

OTG mode is enabled by pulling JP3 high and selecting "OTG" in the GUI. Verification requires disconnecting VIN, applying 4.0 V to BATT+, and loading VIN with a 4–10 Ω resistor. Output voltage (4.8–5.5 V) and current (0.5–1.5 A) are then I²C-configurable and monitored via ADC - test results on pages 19–20 confirm stable 5.0 V / 1.5 A operation.

Can the board be used for JEITA-compliant thermal charging?

Yes. The board includes R_T1/R_T2 (10 kΩ) for NTC biasing and supports JEITA profile configuration via I²C registers JEITA_ISET and JEITA_VSET. Page 20 shows validated NTC JEITA operation with -100 mV offset and 50% ISET, enabling charge suspension outside 0–45°C battery temperature range.

What is the role of the DISC pin and how is it controlled?

The DISC pin enables shipping mode and system restart. It is accessible via header pin and controllable via I²C register. Pulling DISC low disables all internal regulators and reduces quiescent current to <1 µA - verified in shipping mode control diagram (Figure 23) and supported by full DISC control feature listed in the board's key features.

Is external power required for OTG operation?

No. During OTG mode, the board draws power solely from the battery - VIN must be disconnected (floating). The MP2723's integrated 1.35 MHz boost converter converts battery voltage (2.9–4.67 V) to regulated 5 V output, delivering up to 1.5 A as confirmed in OTG steady-state test results (page 19).