Monolithic Power Systems Inc. MPM54304GMN-0065

Overview

MPM54304GMN-0065 from Monolithic Power Systems is a quad-output, synchronous buck power module with I²C programmability and non-volatile MTP configuration. It delivers up to 3A per channel on outputs 1–2 and 2A per channel on outputs 3–4, operates from 4V–16V input, supports 0.55V–7V output range (I²C or resistor-set), and uses constant-on-time control for ultra-fast transient response in FPGA and multi-rail embedded systems.

For engineers reviewing the MPM54304GMN-0065 datasheet, MPM54304GMN-0065 pinout, MPM54304GMN-0065 application, or MPM54304GMN-0065 equivalent, this page provides verified package mapping (LGA-33), confirmed I²C register-addressable parameters (output voltage, sequencing, OVP thresholds), validated channel paralleling capability (6A/4A), and real-world thermal derating guidance based on max PLOSS vs. temperature curves.

Technical Context

The MPM54304GMN-0065 integrates four independent COT-controlled buck regulators with internal compensation, eliminating external loop components. Each channel features programmable soft-start (0.7–1.2 ms), adjustable current limits (3.2–5.2 A for Ch1/2; 1.2–4 A for Ch3/4), and configurable UV/OV protection thresholds via I²C or MTP registers.

Its functional block includes dual signal grounds (SGND1/SGND2), interleaved phase-shifted switching (buck 1–4), and a multifunction GPIO pin supporting ADD (I²C address selection), PG (open-drain power-good), SYNCO (sync output), or Output Port modes - all configured through MTP/I²C without hardware changes.

Key Specifications

Pinout & Package

LGA-33 (7mm × 7mm × 2mm) ultra-thin land grid array package with exposed thermal pad; requires solder paste stencil design per MPS AN-109 for optimal thermal performance and mechanical reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-output, I²C-programmable power module applications.

Compared with MPM54304GMN-0065, the MPM54302GMN halves rail count but retains identical programming flexibility and thermal specs, while the TPS650861RSLR trades wide input range and MTP storage for lower gate count and fixed timing - making it suitable only for narrow-vin, non-field-upgradable designs.

Availability

MPM54304GMN-0065 is available at Aetrix Electronics and suitable for FPGA power supplies, multi-rail industrial controllers, and automotive ADAS domain controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MPM54304GMN-0065 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 product line targets space-constrained, high-reliability embedded systems requiring integrated quad-rail power with digital configurability - emphasizing thermal robustness, fast transient response, and field-upgradable firmware-defined behavior.

FAQ

What is the default I²C slave address for MPM54304GMN-0065?

The default I²C address is 0x60 (7-bit), set by pulling the GPIO pin to GND at power-up. Four additional addresses (0x61–0x63) are selectable via ADD mode using external resistors on the GPIO pin, as defined in register 0x0E bits [7:6].

Can MPM54304GMN-0065 operate with only two outputs enabled?

Yes - any combination of outputs (1, 2, 3, or 4) can be individually enabled/disabled via I²C register 0x00 bits [3:0]. Unused channels enter low-power state with <80μA shutdown current, preserving efficiency in partial-rail operation.

How is thermal derating applied when multiple channels are active?

Total package power loss (PLOSS = PLOSS1 + PLOSS2 + PLOSS3 + PLOSS4) must stay below the curve-defined limit (e.g., 3.93W at 25°C ambient). Derating is linear: at 85°C ambient, max allowed PLOSS drops to ~2.2W per the Max PLOSS vs. Temperature graph on page 11.

Does MPM54304GMN-0065 support pre-bias start-up on all four channels?

Yes - all four buck regulators support monotonic pre-bias start-up. The internal BST capacitor refreshes and soft-start capacitor charges independently per channel, preventing reverse current flow even when outputs are pre-charged to different voltages.

What is the minimum external component count required for basic operation?

Only four ceramic output capacitors (22µF each), one 1µF VCC decoupling cap, and optional feedback resistors (if not using I²C voltage setting) are required. No external compensation, bootstrap diodes, or current-sense resistors are needed due to full integration.

Can the GPIO pin be used simultaneously as both ADD and PG functions?

No - GPIO is a single-function pin per power cycle. Its mode (ADD, PG, SYNCO, or Output Port) is latched at startup based on MTP register 0x0E bits [7:6] and cannot be dynamically reconfigured without reset or power cycle.

Is the MPM54304GMN-0065 RoHS-compliant and halogen-free?

Yes - it meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21. Full compliance documentation, including material declarations and green status reports, is available on the MPS Quality Assurance website.