Monolithic Power Systems Inc. EV28300-G-01A

Overview

EV28300-G-01A from Monolithic Power Systems is an evaluation board for the MP28300GG monolithic power management IC, integrating a 300mA ultra-low-I_Q step-down switcher and a 100mA LDO regulator in a QFN12 (2×2mm) package. It supports input voltages from 2.0V to 5.5V, delivers selectable output voltages (0.8V–3.3V for buck, 1.3V–3.3V for LDO), and enables rapid validation of battery-powered system power architectures.

For engineers reviewing the EV28300-G-01A datasheet, EV28300-G-01A pinout, EV28300-G-01A application, or EV28300-G-01A equivalent, this board provides verified reference design implementation, efficiency vs. load current characterization (VIN = 2V–5.0V), transient response waveforms, and configurable CTRL-based voltage selection - critical for SSD, portable instrumentation, and low-power IoT device development.

Technical Context

The EV28300-G-01A implements the MP28300GG's dual-regulator architecture: a constant-on-time (COT) buck converter operating at 1.5MHz with 500nA quiescent current, and a separate 300nA-I_Q LDO with independent input (VIN2) and output (VOUT2) pins. Both regulators feature dedicated CTRL pins for ON/OFF control and digital voltage selection via binary encoding.

Board-level design includes validated external components: two 10µF X5R ceramic input/output capacitors for the buck stage (C1, C2), two 1µF X5R capacitors for the LDO (C3, C4), a 2.2µH shielded inductor (L1), and a 100kΩ pull-up resistor (R1). All layout layers (top silk, top copper, bottom copper) are documented per Rev.1.0 schematic and PCB files.

Key Specifications

Availability

EV28300-G-01A is available at Aetrix Electronics and suitable for solid-state drive power sequencing, portable instrumentation biasing, and battery-powered device subsystem validation requiring stable component supply and production-ready reference designs.

Supply support for EV28300-G-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, LED drivers, and motor control solutions.

The MP28300 product line targets ultra-low-power battery-operated systems, delivering sub-microamp quiescent current and multi-voltage rail generation in minimal footprint - optimized for SSDs, wearables, and sensor nodes.

FAQ

What is the primary function of the EV28300-G-01A evaluation board?

This board is a fully assembled and tested hardware platform for evaluating the MP28300GG power management IC. It demonstrates simultaneous operation of its 300mA buck converter and 100mA LDO, including voltage selection via CTRL pins, efficiency measurement, transient response, and power-good signaling - with no additional components required beyond input power and load.

How do I configure different output voltages on the EV28300-G-01A?

Voltage selection is controlled by jumper settings or logic signals applied to five dedicated CTRL pins: CTRL1–CTRL3 set the buck output (7 options + disable), while CTRL4–CTRL5 set the LDO output (3 options + disable). Table 1 in the quick start guide defines the exact binary mapping; no soldering or firmware is needed.

Can the buck and LDO operate independently on this board?

Yes. VIN1 powers only the buck stage (U1 pins VIN1, SW1, OUT1, PG1), while VIN2 powers only the LDO stage (U1 pins VIN2, OUT2). They share ground but have isolated input paths, enabling independent enable/disable, voltage selection, and load testing - critical for verifying power sequencing in multi-rail systems.

What test data is included in the EV28300-G-01A documentation?

The Rev.1.0 document includes oscilloscope waveforms for steady-state operation (0A/0.3A loads), startup/shutdown timing, power-good assertion, short-circuit recovery, and efficiency vs. load current across six input voltages (2V–5V). All data was captured under defined thermal and component conditions (TA = +25°C, specified L/C values).

Is the EV28300-G-01A RoHS-compliant and lead-free?

Yes. The board uses RoHS-compliant, lead-free, halogen-free components throughout - including the MP28300GG IC (QFN12 package), Murata GRM-series capacitors, and DFE-series inductor - consistent with MPS's green manufacturing policy and global environmental directives.