Monolithic Power Systems Inc. EV2733-QC-00A

Overview

EV2733-QC-00A from Monolithic Power Systems is an evaluation board for the MP2733 wide-input, 4.5A I²C-controlled switch-mode battery charger IC with NVDC power path management and USB OTG capability. It supports 3.7–16V input, delivers up to 3.0A at 5V in OTG mode, and enables real-time configuration of charge voltage (4.2V default), input current limit (0.5A default), and input voltage regulation (4.3V default) via I²C interface. Designed for rapid validation of portable power architectures in tablet PCs, smartphones, and mobile internet devices.

For engineers reviewing the EV2733-QC-00A datasheet, EV2733-QC-00A pinout, EV2733-QC-00A application, or EV2733-QC-00A equivalent, this board provides full access to MP2733's I²C registers, integrated ADC monitoring (VIN, VBATT, IBATT, VSYS, temperature), NVDC instant-on behavior, thermal regulation (60–120°C configurable), and USB OTG boost output control - enabling precise system-level power path tuning without custom hardware.

Technical Context

The EV2733-QC-00A implements the MP2733GQC QFN-26 (3.5mm×3.5mm) IC in a fully populated, test-ready layout optimized for single-cell Li-ion/Li-polymer charging. Its design integrates all critical passive components-including 1.0μH power inductor (Cyntec HTEP32251B-1R0MIR-89), 22μF SYS and battery capacitors (Murata GRM31CR61C226KE15L), and micro-USB connector (Wurth 629105150521)-to demonstrate full functionality across input voltages (5V/9V/12V/16V) and load conditions (0–4.5A discharge, 0–3.0A OTG).

It supports dual operational modes: charger mode (default, CE pulled low) and USB OTG mode (OTG pin pulled high), with jumper-configurable NTC bias (JP1), enable logic (JP2), and OTG activation (JP3). The board interfaces with the EVKT-USBI2C-02 adapter to run the Windows-based MP2733 Evaluation Software, exposing all 128 I²C registers for real-time parameter adjustment and fault monitoring.

Key Specifications

Availability

EV2733-QC-00A is available at Aetrix Electronics and suitable for portable electronics development, battery management system validation, and USB OTG subsystem integration requiring stable component supply, traceable sourcing, and documented reference design fidelity.

Supply support for EV2733-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, including DC/DC converters, LED drivers, motor drivers, and battery chargers, with global manufacturing and quality certifications.

The MP2733 product line targets high-efficiency, software-configurable battery charging in space-constrained portable devices-designed to replace discrete charger + power path + OTG solutions with a single IC supporting NVDC architecture, JEITA compliance, and USB-C ecosystem readiness.

FAQ

What software is required to operate the EV2733-QC-00A?

The MP2733 Evaluation Software (Windows XP/7/10/11 compatible) is mandatory and must be installed alongside the EVKT-USBI2C-02 USB-to-I²C interface adapter. The software provides GUI access to all 128 I²C registers, real-time ADC readouts, fault status decoding, and parameter sweep functions-not available via standalone hardware controls.

Does the board support battery-less operation?

Yes. The MP2733's NVDC architecture enables instant system turn-on even with no battery or deeply discharged battery (≤2.5V), as VSYS is powered directly from VIN through the ideal diode path. This is demonstrated on the EV2733-QC-00A when VIN ≥3.7V and CE is asserted, with VSYS regulating to match VBATT_REG minus VTRACK (100mV or 150mV).

Can the OTG output deliver 3.0A continuously?

Yes, but only when configured via I²C to set IIN_DSCHG = 3.0A and VIN_DSCHG = 5.0V (or 4.8–5.5V range), with battery voltage ≥3.3V and board temperature ≤85°C. Thermal derating begins above 85°C, and sustained 3.0A requires adequate PCB copper area and airflow per the layout guidelines in Figures 33–36.

What is the role of JP1, JP2, and JP3 jumpers?

JP1 sets NTC bias ratio (pull-low = 50% fixed ratio); JP2 controls CE pin logic (pull-low = enable charging); JP3 controls OTG pin logic (pull-high = enable OTG mode). All are DIP-style 2.54mm connectors pre-configured per Quick Start Guide defaults-no soldering required for baseline operation.

Is the board RoHS-compliant and halogen-free?

Yes. All components on the EV2733-QC-00A meet MPS' green policy: lead-free, halogen-free, and compliant with EU RoHS Directive 2011/65/EU. Full material declarations and test reports are available on the MPS Quality Assurance webpage.

How is shipping mode activated?

Shipping mode is controlled via I²C register 0x1E bit[0] (DISC_EN) and requires the MP2733 Evaluation Software. When enabled, it disconnects the battery from SYS and VIN paths, reducing quiescent current to <1μA-verified on the EV2733-QC-00A using a Keithley 2450 SMU measuring IBATT leakage.