Monolithic Power Systems Inc. MPM54304GMN-0004

Overview

MPM54304GMN-0004 from Monolithic Power Systems is a quad-output, synchronous buck power module with I²C interface and multi-time programmable (MTP) memory, configured for parallel operation of channels 1&2 (up to 6A) and channels 3&4 (up to 4A), operating from 4V–16V input and delivering 0.6V–7V outputs via external resistor dividers. It integrates internal compensation, constant-on-time (COT) control, and ultra-thin LGA-33 (7mm×7mm×2mm) packaging - deployed in FPGA and multi-rail embedded power systems.

For engineers reviewing the MPM54304GMN-0004 datasheet, MPM54304GMN-0004 pinout, MPM54304GMN-0004 application, or MPM54304GMN-0004 equivalent, this device supports I²C-configurable sequencing, paralleling, over-current/voltage thresholds, and GPIO reconfiguration - critical for high-density, dynamically managed power rails in industrial and communications equipment.

Technical Context

The MPM54304GMN-0004 implements four independent COT-controlled buck regulators with interleaved switching and phase-shifted operation across channels to reduce input/output ripple and EMI. Each channel features programmable soft-start, hiccup-mode current limiting, and UV/OV protection with register-adjustable thresholds.

Its dual-ground architecture (SGND1 for channels 1/2, SGND2 for channels 3/4) isolates feedback paths to minimize noise coupling, while the integrated 3.3V VCC LDO powers internal logic and drivers - decoupled by a mandatory 1µF capacitor. The EN/SYNCI pin serves dual roles: enable control with 2MΩ internal pull-down and external clock synchronization (500kHz–1.6MHz).

Key Specifications

Pinout & Package

LGA-33 (7mm × 7mm × 2mm) package with exposed thermal pad on underside; requires solder paste stencil and reflow profile optimized for fine-pitch LGA assembly. Ground pins (1, 2, 5, 7, 10, 13, 16, 20, 21, 27, 33) must be connected to wide copper planes and ≥6 thermal vias for thermal derating compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPM54302GMN and TPS650861RSLR, the MPM54304GMN-0004 uniquely combines quad-channel paralleling, on-module MTP storage, and I²C simplicity - reducing firmware dependencies and enabling field-updatable power policies without hardware changes.

Availability

MPM54304GMN-0004 is available at Aetrix Electronics and suitable for FPGA power supplies, multi-rail industrial controllers, and high-density communications modules requiring stable component supply, consistent MTP programming, and long-term lifecycle assurance.

Supply support for MPM54304GMN-0004 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 design centers in the US, China, and Taiwan.

The MPM54304 belongs to MPS's ultra-thin, fully integrated power module product line - engineered for space-constrained, thermally demanding applications in computing, communications, and industrial automation where minimal external components and digital configurability are essential.

FAQ

What is the default output voltage configuration for MPM54304GMN-0004?

The MPM54304GMN-0004 is factory-programmed with resistor-divider-based outputs: VOUT1 = 1.0V, VOUT2 = 3.3V, VOUT3 = 1.8V, VOUT4 = 1.5V - verified per register values 0x02 (1.0V), 0x05 (3.3V), 0x08 (1.8V), and 0x0b (1.5V) in the datasheet's Table 3.

Can channels 1&2 and 3&4 be paralleled simultaneously on the same board?

Yes - MPM54304GMN-0004 supports concurrent paralleling of both channel pairs via MTP register settings (0x0d D[7:6] = 01 for Ch1/2; 0x0d D[5:4] = 01 for Ch3/4), enabling 6A on VOUT1/VOUT2 and 4A on VOUT3/VOUT4 with shared SW1/SW2 and SW3/SW4 nodes respectively.

How is thermal performance affected when operating all four channels at full rated current?

At maximum combined load (6A + 4A = 10A), total package power loss exceeds 3.93W - triggering thermal shutdown above 125°C ambient unless using ≥200LFM airflow or enhanced copper pour. Derating curves on page 11 specify max PLOSS = 2.8W at 85°C ambient with still air.

Does the GPIO pin support simultaneous use as both power-good output and I²C address selector?

No - the GPIO pin operates in one mode at a time, selected via MTP register 0x0e D[7:6]. In "ADD" mode, it sets I²C slave address; in "PG" mode, it aggregates PG1–PG4 signals. Mode switching requires I²C write and device reset - not runtime reconfiguration.

What is the minimum output capacitance required per channel for stability?

Each channel requires ≥22µF ceramic output capacitance (X5R/X7R, ≤5mΩ ESR), as validated in the typical application schematic (page 2). Using less than 22µF risks instability under CCM operation due to COT control loop dynamics and reduced phase margin.

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

Yes - pre-bias start-up is implemented per channel and verified across all outputs in the datasheet's Figure 23–26. Each buck regulator independently detects pre-biased VOUT and initiates monotonic ramp without reverse current, even when channels power different voltage domains.

How does the MPM54304GMN-0004 handle input voltage dropout below UVLO threshold?

When VIN drops below the programmable UVLO falling threshold (default 4.5V ±600mV), all enabled channels shut down with hiccup-mode current limiting. Recovery occurs only after VIN rises above the rising threshold plus hysteresis - preventing oscillatory restart during brown-out conditions.