Monolithic Power Systems Inc. MP5030DGQH-P

Overview

MP5030DGQH-P from Monolithic Power Systems is a USB charging port controller integrating a 3A current-limit switch and BC1.2-compliant auto-detection circuitry for DCP and CDP modes. It operates across 5V–14V input, delivers ±1% output regulation with line drop compensation up to 400mV at 2.4A, and features hiccup OCP, 115V input OVP, and thermal shutdown. It serves as the core USB power management IC in wall adapters and car chargers.

For engineers reviewing the MP5030DGQH-P datasheet, MP5030DGQH-P pinout, MP5030DGQH-P application, or MP5030DGQH-P equivalent, key selection criteria include programmable 3.35A current limit (R_ILIM = 1.5kΩ), QFN-10 package thermal performance (θ_JA = 56°C/W), STATUS pin load detection threshold (90mA typ.), and ADJ-based 5V regulation with line drop compensation.

Technical Context

The MP5030DGQH-P implements dual-stage UVLO (3V and 3.9V thresholds) to sequence ADJ regulation before MOSFET turn-on, enabling precise upstream DC/DC output control. Its MODE pin selects between floating (DCP mode) and grounded (CDP mode) states, triggering full re-initialization of VBUS with discharge and restart.

BC1.2 compliance is achieved via dedicated analog comparators and current sources on DP/DM pins: DCP uses short-circuit detection (R_{DP/DM_Short} < 50Ω), while CDP relies on windowed DP voltage sensing (0.35–0.9V) and DM sourcing (0.6V typ.) with 5ms deglitching. Line drop compensation is implemented by sinking a linearly scaled current (up to 500μA) from the upstream FB node via ADJ.

Key Specifications

Pinout & Package

MP5030DGQH-P is housed in a thermally enhanced QFN-10 (1.5mm × 2mm, 0.5mm pitch) package with exposed thermal pad. The package supports ≤2.23W continuous power dissipation on a 2-layer 4.4cm × 2.9cm PCB (2oz copper) and achieves θ_JA = 56°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB charging port controller applications.

Compared with TPS2514A and NCP380, MP5030DGQH-P uniquely combines 3A programmable current limiting, full BC1.2 CDP/DCP auto-detection, and ADJ-based line drop compensation in a single QFN-10 package-enabling compact, firmware-free USB charging solutions for automotive and industrial adapters.

Availability

MP5030DGQH-P is available at Aetrix Electronics and suitable for USB power supplies, AC/DC wall adapters, and cigarette lighter adapters requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MP5030DGQH-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 power management ICs, including DC/DC converters, LED drivers, and USB power controllers.

The MP5030DGQH-P belongs to MPS's USB Charging Port Controller product line, designed specifically to simplify BC1.2-compliant USB power delivery in space-constrained, high-reliability applications such as automotive accessories and multi-port adapters.

FAQ

What is the minimum input voltage required for MP5030DGQH-P to enable ADJ regulation?

The ADJ block begins operating when VIN exceeds the first UVLO threshold of 3.0V (typical). At this point, it starts sinking current from the upstream FB node to regulate output to 5V. Full USB switch operation requires VIN > 3.9V to activate the power MOSFET.

How does the MP5030DGQH-P handle transitions between CDP and DCP modes?

When MODE pin changes state (float ↔ grounded), the IC discharges VBUS, resets internal state, and performs a full re-initialization with controlled soft-start. This ensures clean mode handover without bus glitches or protocol errors during live device attachment.

Can the STATUS pin drive an LED directly without a current-limiting resistor?

No. STATUS is an open-drain output with 100Ω pull-down strength when active. Driving an LED requires an external current-limiting resistor (e.g., 4.7kΩ for ~1mA at 5V) to avoid exceeding the 1mA sink rating and ensure reliable low-voltage assertion.

What is the maximum allowable R_ILIM value to maintain ±5% current limit accuracy?

Accuracy degrades below 500mA setpoint. To maintain ±5% error at 3.35A, R_ILIM must be ≤ 6.2kΩ (per datasheet curve). For 3A full-load systems, 1.5kΩ is recommended-yielding 3.35A nominal limit with guaranteed 3.0–3.7A range across temperature.

Does the MP5030DGQH-P support USB 2.0 data pass-through?

No. DP and DM pins are dedicated solely to BC1.2 handshaking and mode detection. They are not buffered or terminated for high-speed data transmission; the IC provides no USB 2.0 signal integrity support or ESD protection beyond IEC 61000-4-2 Level 2.

How is thermal performance affected if the QFN-10 thermal pad is not soldered to PCB ground?

Omitting thermal pad connection increases θ_JA by >40°C/W, causing junction temperature to exceed 150°C at <2A load. Full thermal pad soldering with ≥4 thermal vias is mandatory to achieve rated 3A continuous operation per datasheet conditions.

What happens to VBUS during input over-voltage events?

When VIN exceeds 115V (typical), the internal comparator triggers immediate MOSFET gate shutdown (<10μs response), disconnecting OUT from IN. Simultaneously, the 72Ω input discharge path activates to safely bleed VIN down to 5.4V before automatic recovery.