Monolithic Power Systems Inc. MPM54304GMN-0002

Overview

MPM54304GMN-0002 from Monolithic Power Systems is a quad-output, synchronous buck power module with 4V–16V input, delivering up to 6A (channels 1+2 paralleled) and 4A (channels 3+4 paralleled), I²C-programmable output voltages (0.55V–5.4V), internal auto-compensation, and constant-on-time control for ultra-fast transient response. It targets FPGA and multi-rail MCU/DSP power systems requiring compact, configurable, high-density regulation.

For engineers reviewing the MPM54304GMN-0002 datasheet, MPM54304GMN-0002 pinout, MPM54304GMN-0002 application, or MPM54304GMN-0002 equivalent, key selection considerations include its LGA-33 ultra-thin package (7mm×7mm×2mm), resistor-divider-based output configuration with pre-set parallel mode for channels 1&2, integrated thermal shutdown (160°C), and GPIO-configurable power-good signaling.

Technical Context

The MPM54304GMN-0002 implements four independent COT-controlled synchronous buck regulators with interleaved switching and phase-shifted operation across all four channels to reduce input/output ripple and EMI. Its dual feedback paths (FB1–FB4) support per-channel voltage setting via external resistor dividers or I²C, with dedicated signal grounds (SGND1/SGND2) isolating channel 1&2 and 3&4 sensing networks.

It integrates non-volatile MTP memory storing register configurations-including switching frequency (default 800kHz ±15%), OVP/OCP thresholds, soft-start timing, and power sequencing-enabling one-time programming of startup behavior without host intervention. The EN/SYNCI pin supports both enable/disable control and external clock synchronization (500–1600kHz), while the GPIO pin is factory-configured for ADD-mode I²C address selection in this variant.

Key Specifications

Pinout & Package

LGA-33 (7mm × 7mm × 2mm) package with exposed thermal pad on underside; requires solder paste stencil design for reliable thermal and mechanical attachment. Pin 1 marked by dot; top marking includes MPS prefix, year/week code, and part number.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-output power module applications.

Compared with MPM54304GMN-0002, the -0000 variant offers greater runtime flexibility but requires active I²C initialization, while the TPS650860 trades COT speed and MTP persistence for PMBus compatibility and lower input voltage range-making the -0002 optimal for fixed, high-transient, 4–16V industrial FPGA/MCU applications.

Availability

MPM54304GMN-0002 is available at Aetrix Electronics and suitable for FPGA power supplies, multi-rail industrial controllers, automotive ADAS domain controllers, and AI edge accelerator modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MPM54304GMN-0002 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 modules, with over two decades of expertise in DC/DC conversion, motor drivers, and LED lighting solutions.

The MPM54304 product line delivers highly integrated, thermally optimized power modules targeting space-constrained, high-reliability applications in computing, communications, and industrial automation-designed to replace discrete buck solutions with minimal external components and robust configurability.

FAQ

What output voltage configuration does MPM54304GMN-0002 use?

This variant is factory-configured for resistor-divider-based output setting (0.6V–7V range) with channels 1 and 2 pre-programmed to operate in parallel mode, delivering up to 6A on VOUT1/VOUT2. Channels 3 and 4 remain independent 2A outputs. No I²C programming is required for basic operation.

How is thermal performance managed in the LGA-33 package?

The LGA-33 package features an exposed thermal pad on the underside, designed for direct solder attachment to a large copper pour or heatsink. Thermal resistance is θJC = 14.4°C/W (EVM54304-MN-00A board), enabling 3.93W continuous dissipation at 25°C ambient before thermal shutdown activates at 160°C junction temperature.

Can the GPIO pin be reconfigured after assembly?

Yes-the GPIO pin's function (ADD, PG, Output Port, or SYNCO) is controlled by MTP register 0x0e bits D[7:6]. While factory-set to ADD mode in MPM54304GMN-0002, it can be reprogrammed via I²C before final system deployment to serve as power-good output or sync source.

What is the minimum output capacitance required per rail?

Typical designs use 22µF ceramic capacitors per output (e.g., 22µF ×2 for VOUT1/VOUT2 in parallel). The COT control architecture and internal compensation allow stable operation with low-ESR ceramics only-no bulk electrolytic or tantalum capacitors are needed for basic functionality.

Does MPM54304GMN-0002 support power sequencing?

Yes-power-on and power-off sequencing order, delay times, and voltage ramp rates are fully programmable via I²C registers (e.g., registers 0x0f–0x12). Sequencing is stored in MTP memory, ensuring repeatable startup behavior without host processor involvement.

Is pre-bias start-up supported on all four channels?

Yes-each buck regulator independently supports monotonic start-up into pre-biased outputs. Internal BST refresh and soft-start capacitor charging prevent reverse current flow, making it suitable for hot-swap and redundant power architectures where outputs may already be energized.

What protection features are integrated?

Per-channel over-voltage protection (115–125% VREF), over-current protection (adjustable valley current limit), thermal shutdown (160°C), input UVLO (4.5V rising), and power-good monitoring with 200µs rising/50µs falling delays are all integrated. Hiccup-mode current limiting prevents latch-up during sustained overload.