Monolithic Power Systems Inc. MEZDPD3603A-84E9

Overview

mEZDPD3603A-84E9 from Monolithic Power Systems is a fully integrated, programmable DC/DC power supply module delivering up to 3A continuous output current with user-configurable 0.6–12V output voltage, operating from 4.5–36V input, and housed in a standard DIP package (16×23×6.5 mm). It integrates PWM controller, power MOSFETs, inductor, and compensation, enabling rapid deployment in industrial control, test equipment, and FPGA/ASIC auxiliary rails.

For engineers reviewing the mEZDPD3603A-84E9 datasheet, mEZDPD3603A-84E9 pinout, mEZDPD3603A-84E9 application, or mEZDPD3603A-84E9 equivalent, this module supports I²C-based real-time configuration of output voltage, current limit, switching frequency, and protection thresholds - eliminating external component selection and layout iteration during prototyping.

Technical Context

The mEZDPD3603A-84E9 implements a synchronous buck topology with internal high- and low-side MOSFETs, fixed-frequency peak-current-mode control, and integrated 5V LDO (VCC) for biasing. Its programmable OTP memory stores final configuration, while RAM registers allow unlimited runtime tuning via I²C interface (7-bit address configurable via ADD pin).

It features hiccup-mode short-circuit protection, thermal shutdown at 175°C, power-good (PG) and fault (FT) open-drain status outputs, and EN-controlled soft-start. Input ripple suppression meets EN55022 Class B with recommended external filter components.

Key Specifications

Pinout & Package

Package: Standard DIP module, 16 mm × 23 mm × 6.5 mm, with through-hole mounting and integrated heatsink baseplate.

Availability

mEZDPD3603A-84E9 is available at Aetrix Electronics and suitable for industrial automation controllers, automated test equipment (ATE), and FPGA-based edge computing platforms requiring stable component supply, programmable flexibility, and rapid time-to-bench validation.

Supply support for mEZDPD3603A-84E9 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 and integrated power modules for industrial, automotive, and computing markets.

The mEZD family delivers turnkey, programmable DC/DC solutions targeting engineers who need validated, layout-optimized power stages without custom design cycles - accelerating development of reliable, compact, and EMI-compliant power subsystems.

FAQ

What programming interfaces does mEZDPD3603A-84E9 support?

mEZDPD3603A-84E9 supports I²C communication (SCL/SDA) for real-time register read/write and one-time OTP programming via USB-to-I²C adapter (EVKT-USBI2C-02). Configuration is performed using Monolithic Power's Virtual Bench GUI, which provides modeling, parameter validation, and fault simulation prior to hardware deployment.

Can mEZDPD3603A-84E9 be used without external capacitors?

No. External input (4.7 µF ceramic) and output (22 µF ceramic ×2 for 5 V/12 V) capacitors are mandatory for stability, transient response, and EN55022 compliance. The module's internal compensation assumes these values; omitting them risks oscillation, poor load regulation, or EMI failure.

How is output voltage accuracy maintained across temperature and load?

Output voltage is trimmed during manufacturing and stored in OTP memory. Internal feedback loop uses precision resistive divider and error amplifier with ±1% typical accuracy over −40°C to +85°C and 0–3 A load range, verified by production testing at 25°C and characterized across extremes.

Does mEZDPD3603A-84E9 require a heatsink under full-load operation?

A dedicated heatsink is not required. With ≥2 oz copper on both top and bottom layers and ≥4 thermal vias under the baseplate, the module maintains <60°C case rise at 3 A/24 V_IN/12 V_OUT. Forced airflow >200 LFM further reduces thermal resistance.

What protection features are implemented in hardware versus firmware?

Hardware protections include hiccup-mode short-circuit response, overtemperature shutdown (175°C), and input UVLO (4.2 V). Fault detection (FT̅) and power-good (PG) signals are generated in real time by analog comparators - independent of I²C or GUI state.

Is mEZDPD3603A-84E9 RoHS and REACH compliant?

Yes. mEZDPD3603A-84E9 conforms to RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Certificate of Compliance and material declarations are available upon request from Monolithic Power Systems' quality portal.