Monolithic Power Systems Inc. EV3320B-Q-00A

Overview

EV3320B-Q-00A from Monolithic Power Systems is a fully assembled evaluation board for the MP3320B - a 4-channel synchronous boost RGB LED driver with I²C interface, 2V–5.5V input range, 102mA/channel max LED current, 5.4V max output voltage, and integrated 10-bit PWM + 8-bit analog dimming per channel. It demonstrates phase-shifted PWM for reduced inrush and audible noise in RGB lighting systems.

For engineers reviewing the EV3320B-Q-00A datasheet, EV3320B-Q-00A pinout, EV3320B-Q-00A application, or EV3320B-Q-00A equivalent, this board enables rapid validation of MP3320B's I²C-configurable LED string control, open/short LED protection, OVP, OTP, and adaptive switching frequency operation across portable and embedded color-tunable lighting designs.

Technical Context

The EV3320B-Q-00A implements the MP3320B IC in QFN-14 (2mm×2mm) package, supporting four independent LED channels with synchronized boost conversion and programmable I²C addresses (16 options via external resistor). Each channel features separate 10-bit PWM and 8-bit analog dimming registers.

It integrates phase-shift functionality to stagger channel PWM edges, reducing peak input current and minimizing EMI and coil whine. Protection circuitry includes open LED detection, short LED detection (2.5V threshold), over-voltage protection (5.4V typical), and over-temperature shutdown.

Key Specifications

Availability

EV3320B-Q-00A is available at Aetrix Electronics and suitable for RGB backlighting, smart indicator lighting, and portable display illumination requiring stable component supply, quick prototyping turnaround, and validated reference design integration.

Supply support for EV3320B-Q-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 expertise in DC-DC converters, LED drivers, motor drivers, and battery management solutions.

The MP3320B product line targets compact, high-efficiency RGBW LED applications in space-constrained consumer and industrial devices, emphasizing low-noise operation, flexible dimming, and robust fault protection.

FAQ

What is the primary function of the EV3320B-Q-00A?

This board is not a standalone IC but a ready-to-use evaluation platform for the MP3320B LED driver. It provides all necessary passive components, RGBW LED load, I²C interface headers, and test points to validate the IC's 4-channel synchronous boost operation, dimming control, and protection features without custom PCB design.

Does the EV3320B-Q-00A support white LED (WLED) drive alongside RGB?

Yes - the board includes dedicated WLED anode connection points and is configured to drive four independent strings: red, green, blue, and white. The underlying MP3320B natively supports RGBW topology with identical current and dimming capability per channel.

How is I²C address selection implemented on this board?

I²C address is set by resistor R1 (100Ω) connecting the ADR pin to VDD, configuring the base address. Additional address bits are selected via external resistors on ADR and FF pins per MP3320B datasheet; R1 establishes one of 16 possible addresses (0x60–0x6F default range).

Can the EV3320B-Q-00A operate without an external microcontroller?

No - it requires an external I²C master (e.g., Arduino, Raspberry Pi, or MPS GUI kit) to configure registers, enable channels, set dimming values, and trigger modes like breathing or blinking. No onboard MCU or firmware is included.

What protection features are verified on this evaluation board?

All MP3320B protections are hardware-implemented and testable: open LED protection (OLP), short LED protection (SLP) with 2.5V threshold, over-voltage protection (5.4V OVP), and over-temperature shutdown. Test waveforms in the user guide confirm response under fault conditions.

Is the board compatible with standard 5050 RGBW LEDs?

Yes - it includes a pre-mounted GL-5050RGB 1.5W RGB LED and GL-5050QWC white LED, both in standard 5050 SMD package. The CN3 header also allows direct connection of external 5050 or similar footprint RGBW LEDs with appropriate forward voltage matching.