Monolithic Power Systems Inc. EV3414A-J-00A

Overview

EV3414A-J-00A from Monolithic Power Systems is an evaluation board designed to demonstrate the MP3414A synchronous step-up converter IC, which delivers 5 V / 1 A output from 2.5–4.7 V input with 1 MHz fixed-frequency operation, internal PMOS output disconnect, and up to 97% efficiency in a TSOT23-8 package.

For engineers reviewing the EV3414A-J-00A datasheet, EV3414A-J-00A pinout, EV3414A-J-00A application, or EV3414A-J-00A equivalent, this board enables rapid validation of MP3414A's output disconnect behavior, inrush current limiting, soft-start timing, and efficiency across battery-powered portable devices operating at 3.3 V nominal input.

Technical Context

The EV3414A-J-00A implements a complete reference design for the MP3414A - a current-mode, synchronous boost controller with integrated P-channel MOSFET for output disconnect and internal compensation. It supports adjustable output voltage (up to 5.5 V) via external resistor divider (R1 = 1 MΩ, R2 = 137 kΩ factory-set for 5 V).

Test conditions confirm stable 5 V regulation at 1 A load with 3.3 V input, 1.5 µH inductor (Wurth 744311150), and ceramic output capacitance (22 µF + 1 µF). Shutdown current is <1 µA, quiescent current is 22 µA, and protection includes OVP, SCP, and OTP.

Key Specifications

Availability

EV3414A-J-00A is available at Aetrix Electronics and suitable for portable medical devices, wireless peripherals, handheld computers, and smart phone accessory power management requiring stable component supply and fast prototyping capability.

Supply support for EV3414A-J-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 MP3414A product line targets ultra-compact, high-efficiency boost converters for space-constrained battery-powered consumer and medical electronics where output isolation during shutdown is critical.

FAQ

What is the primary purpose of the EV3414A-J-00A evaluation board?

This board is a fully assembled, tested reference design for the MP3414A synchronous step-up converter. It enables immediate functional verification of 5 V output generation, output disconnect behavior, efficiency curves, and protection features without custom PCB development.

Can the output voltage be adjusted, and how?

Yes - VOUT is set by the R1/R2 resistor divider. With R1 = 1 MΩ and VFB = 0.6 V, changing R2 adjusts output per VOUT = 0.6 V × (1 + R1/R2). The board ships with R2 = 137 kΩ for 5 V, and R4 is NC for optional enable control routing.

Does the board support enable/disable control, and what are the logic thresholds?

Yes - the EN pin accepts standard digital logic: drive >1.2 V to enable the MP3414A, or <0.4 V to disable it. Shutdown current drops to <1 µA, and output is fully disconnected from input via internal PMOS switch.

What inductor and capacitors are used on the EV3414A-J-00A board?

The board uses Wurth 744311150 (1.5 µH, 11 A IR, 6.6 mΩ DCR) for L1; C1 = 10 µF/10 V X7R 1210; C2A = 22 µF/10 V X7R 1210; C2B = 1 µF/10 V X7R 0603 - all selected to meet ripple, transient, and ESR requirements at 1 MHz switching.

Is the EV3414A-J-00A RoHS-compliant and lead-free?

Yes - all components on the board comply with RoHS directives. MPS confirms all parts, including the MP3414AGJ IC, are lead-free and halogen-free, consistent with global environmental compliance standards for commercial and medical electronics.

How does output disconnect function during shutdown?

During shutdown, the internal P-channel MOSFET opens, physically isolating VOUT from VIN. This prevents backfeed, eliminates standby leakage through load paths, and ensures true zero-current output - critical for battery-backed systems and safety-critical medical devices.