Monolithic Power Systems Inc. MPM3804GG-P

Overview

MPM3804GG-P from Monolithic Power Systems is a fully integrated, synchronous step-down DC/DC power module with internal MOSFETs and a co-packaged 1µH inductor. It delivers 0.6A continuous output current from a 2.3V–5.5V input, regulates down to 0.6V output, and operates at 2.4MHz switching frequency in an ultra-small 2mm × 2mm × 0.9mm QFN-10 package-ideal for space-constrained optical modules and low-voltage I/O supplies.

For engineers reviewing the MPM3804GG-P datasheet, MPM3804GG-P pinout, MPM3804GG-P application, or MPM3804GG-P equivalent, key selection criteria include its 11μA quiescent current, constant-on-time (COT) control for fast transient response, integrated thermal shutdown and hiccup-mode short-circuit protection, and compatibility with low-ESR ceramic output capacitors without external compensation.

Technical Context

The MPM3804GG-P employs a constant-on-time (COT) control architecture with input voltage feed-forward, enabling stable 2.4MHz operation across its full 2.3V–5.5V input range and maintaining tight line/load regulation. Its internal 120mΩ P-FET and 80mΩ N-FET switches support high efficiency up to 91% while enabling 100% duty-cycle operation in dropout.

It integrates a 1µH power inductor with 0.4Ω DCR, features a dedicated FB pin for adjustable output (0.6V min), 0.5ms internal soft-start, output discharge during disable, and cycle-by-cycle over-current protection with 1.3A peak P-FET current limit-enabling robust, minimal-BOM point-of-load regulation.

Key Specifications

Pinout & Package

MPM3804GG-P is housed in an ultra-small, thermally enhanced QFN-10 package (2mm × 2mm × 0.9mm) with exposed thermal pad (GND-connected) for efficient heat dissipation in high-density layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down module applications.

Compared with TSM10501S and RT6220EGJ6F, the MPM3804GG-P uniquely combines 0.6A capability, 2.4MHz operation, and the industry's smallest 2×2×0.9mm QFN-10 module footprint-making it optimal for next-generation miniaturized electronics where space, height, and ease of design are critical.

Availability

MPM3804GG-P is available at Aetrix Electronics and suitable for optical modules, IoT edge sensors, and industrial PLC I/O cards requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MPM3804GG-P 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 over two decades of leadership in DC/DC conversion, motor drivers, and LED lighting solutions.

The MPM3804 product line delivers fully integrated, ultra-compact power modules targeting space- and efficiency-critical applications in optical networking, portable electronics, and industrial automation-replacing multi-component buck solutions with single-chip reliability.

FAQ

What output voltage options are supported by the MPM3804GG-P?

The MPM3804GG-P is the adjustable version with a 0.6V feedback reference; output voltage is set externally via resistor divider on the FB pin. Common configurations include 1.2V (R1=R2=200kΩ), 1.8V (R1=200kΩ, R2=100kΩ), and 2.5V (R1=200kΩ, R2=63.2kΩ). Fixed-output variants (e.g., MPM3804GG-12) are separate part numbers.

Does the MPM3804GG-P require external compensation components?

No. The MPM3804GG-P uses constant-on-time (COT) control with built-in stability-no external compensation capacitors or resistors are needed. Only input/output capacitors and FB divider resistors are required for basic operation, simplifying layout and reducing BOM count.

How does the device behave during input undervoltage or shutdown?

When VIN drops below the 2.25V UVLO threshold, the device disables and enters shutdown with <1μA supply current. When EN is pulled low, it activates internal output discharge (1kΩ path) to safely drain the output capacitor within milliseconds-preventing residual voltage hazards during hot-swap or fault recovery.

Can the MPM3804GG-P operate with ceramic output capacitors only?

Yes. It is specifically designed to be stable with low-ESR ceramic capacitors (e.g., 22µF X5R/X7R), eliminating the need for tantalum or electrolytic types. The internal COT loop and integrated inductor ensure phase margin >60° across temperature and load without additional damping networks.

What is the thermal performance of the QFN-10 package under full load?

With proper PCB copper pour (≥1cm² thermal pad connection to internal ground plane), the MPM3804GG-P achieves θJA ≈ 80°C/W. At 0.6A output into 1.2V with 3.6V input, junction temperature rise is ~48°C above ambient-well within the -40°C to +125°C operating range and below the 160°C thermal shutdown threshold.

Is the MPM3804GG-P pin-compatible with other MPM3804 variants?

No. While all MPM3804 variants share the same QFN-10 package and pinout, the MPM3804GG-P (adjustable) uses Pin 9 as FB, whereas fixed-output versions (e.g., MPM3804GG-12) repurpose Pin 9 as open-drain Power Good (PG). Swapping them without circuit modification will cause regulation failure or PG misoperation.