Monolithic Power Systems Inc. EV3216DJ-00A

Overview

EV3216DJ-00A from Monolithic Power Systems is an evaluation board for the MP3216 1.3MHz current-mode boost converter IC, designed to demonstrate 5V-to-33V step-up operation at up to 10mA output current with integrated protection features including UVLO, thermal shutdown, and output disconnection. It implements a complete TSOT23-6-based DC/DC solution using discrete passive components on a 5.0cm × 4.5cm PCB.

For engineers reviewing the EV3216DJ-00A datasheet, EV3216DJ-00A pinout, EV3216DJ-00A application, or EV3216DJ-00A equivalent, this board enables rapid validation of MP3216 performance in low-power portable power rails, output voltage adjustability via feedback resistor scaling, and robustness under short-circuit and overvoltage conditions.

Technical Context

The EV3216DJ-00A implements the MP3216's fixed 1.3MHz switching architecture with external 33µH inductor (D63LCB), Schottky diode (B0540W), and ceramic output capacitor network (0.47µF/50V + 4.7µF/16V). Feedback is configured for 33V output using R1=133kΩ and R2=5.1kΩ, referencing the IC's 1.24V internal V_FB.

Board-level protections mirror the MP3216's internal functions: cycle-by-cycle overcurrent limiting, 42V overvoltage shutdown, and EN-controlled input disconnection. The layout supports direct probing of SW, FB, EN, VIN, GND, and VOUT nodes per the TSOT23-6 pinout of U1.

Key Specifications

Availability

EV3216DJ-00A is available at Aetrix Electronics and suitable for portable power validation, handheld device power subsystem testing, and low-current DC/DC reference design requiring stable component supply and documented efficiency curves up to 10mA.

Supply support for EV3216DJ-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 analog and power ICs, with core expertise in DC/DC conversion, LED drivers, and motor control solutions.

The MP3216 product line targets ultra-compact, low-quiescent-current boost converters for battery-powered portable electronics, emphasizing integration, protection, and ease of implementation in space- and cost-sensitive designs.

FAQ

What input voltage range does the EV3216DJ-00A support?

The board is configured and tested for 5 V input only, as specified in the schematic and Quick Start Guide. While the underlying MP3216 IC supports wider VIN ranges, this evaluation board uses fixed component values optimized for 5 V, and no alternate input configurations are documented or validated in the Rev. 1.0 design files.

How is the 33 V output voltage set and can it be changed?

The output voltage is set by the R1–R2 resistive divider on the FB pin, with R1 = 133 kΩ and R2 = 5.1 kΩ, referencing the MP3216's 1.24 V internal feedback threshold. The Quick Start Guide provides the exact formula V_OUT = V_FB × (1 + R1/R2) and confirms adjustability using standard 1% resistors.

Does the board include short-circuit protection?

Yes - the MP3216 IC on the board provides output short-circuit protection as stated in the General Description, preventing damage to both the internal Schottky diode and the IC during fault conditions. This is implemented via cycle-by-cycle current limiting and automatic recovery behavior.

What is the role of the EN pin and how is it controlled on this board?

The EN pin enables or disables the MP3216: the IC operates when V_EN > 2 V and shuts down when EN is shorted to GND. The board exposes EN as a test point, allowing manual enable/disable control without modifying solder joints or adding external circuitry.

Which components on the board are not populated (NC)?

C5, C6, and R5 are marked "NC" (No Connect) in the Bill of Materials and are omitted from the assembled board. R4 is populated as a 0 Ω jumper, providing a configurable ground path option for EN or other signal routing if needed during customization.