Monolithic Power Systems Inc. MP5030DGQH-Z

Overview

MP5030DGQH-Z from Monolithic Power Systems is a USB charging port controller IC integrating a 3A current-limit switch and BC1.2-compliant charging mode detection circuitry. It supports DCP, CDP, divider, and 1.2V/1.2V modes without external intervention, delivers 32mΩ R_DS(ON), and provides line drop compensation up to 400mV at 2.4A for stable 5V output in automotive cigarette lighter adapters and AC/DC wall chargers.

For engineers reviewing the MP5030DGQH-Z datasheet, MP5030DGQH-Z pinout, MP5030DGQH-Z application, or MP5030DGQH-Z equivalent, this device enables robust USB power delivery with programmable current limiting (3.35A typical), load current detection (90mA threshold), status indication, input OVP (115V typ), and thermal shutdown - critical for high-reliability portable power designs.

Technical Context

The MP5030DGQH-Z implements dual-stage UVLO (3V and 3.9V thresholds) and internal soft-start to control inrush during VIN ramp-up. Its ADJ pin sinks up to 500μA to regulate upstream DC/DC converters and deliver linear line drop compensation proportional to load current.

Charging mode selection is hardware-driven: MODE pin floating enables DCP auto-detection (BC1.2/1.2V/Divider), while MODE pulled low initiates CDP handshaking with precise DP/DM voltage windows (0.35–0.9V) and deglitch timing (5ms). STATUS provides open-drain load presence signaling with 200ms turn-on and 15s turn-off delays.

Key Specifications

Pinout & Package

MP5030DGQH-Z 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 2-layer PCB (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-Z uniquely combines 3A programmable current limiting, full BC1.2 mode coverage (including Chinese YD/T 1591), and integrated line drop compensation - enabling single-chip, firmware-free USB power delivery in space-constrained automotive and adapter designs.

Availability

MP5030DGQH-Z is available at Aetrix Electronics and suitable for automotive cigarette lighter adapters, AC/DC wall chargers, and portable power banks requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.

Supply support for MP5030DGQH-Z 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, with design focus on efficiency, integration, and thermal robustness.

The MP5030 series targets USB power delivery infrastructure, delivering fully autonomous BC1.2 charging port control in minimal footprint for automotive, consumer, and industrial power adapters.

FAQ

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

The ADJ block activates when VIN exceeds the first UVLO threshold of 3.0V (typical). Below this, ADJ remains inactive and cannot regulate upstream DC/DC output. For reliable 5V regulation, VIN must exceed 3.9V to fully enable the power MOSFET and ADJ sink function.

Can MP5030DGQH-Z support USB-C Power Delivery (PD) negotiation?

No. MP5030DGQH-Z implements only BC1.2-compliant DCP/CDP/divider/1.2V protocols and lacks USB-C PD PHY, BMC signaling, or VCONN support. It is designed exclusively for USB-A ports and legacy charging standards.

How does the ILIM resistor affect current limit accuracy across temperature?

With R_ILIM = 1.5kΩ, current limit remains within ±6% over -40°C to +125°C. Accuracy degrades below 500mA due to comparator offset; for 3A applications, 1% metal-film resistors are recommended to maintain ±3% total error including tempco.

What happens to STATUS during MODE pin transitions between DCP and CDP?

STATUS resets to open-drain state during MODE transitions. VBUS shuts down and restarts with fixed delay; STATUS remains high-impedance until load current exceeds 90mA for 200ms, ensuring clean mode change signaling to host controllers.

Is the QFN-10 thermal pad electrically connected to GND?

Yes. The exposed thermal pad is internally tied to GND and must be soldered to a PCB GND plane with ≥4 thermal vias (0.3mm diameter) for optimal θ_JA and thermal shutdown margin. Floating the pad increases junction temperature by >25°C at 3A load.

Does MP5030DGQH-Z require external capacitors on DP/DM for ESD protection?

Yes. While the IC includes internal ESD clamps (HBM 2kV), external 2.2nF ceramic capacitors from DP/DM to GND are required per IEC 61000-4-2 Level 4 (8kV contact) compliance. Layout must minimize trace length to avoid resonance above 100MHz.

What is the maximum allowable R_ILIM value for stable current limiting?

R_ILIM must not exceed 4.7kΩ. Above this, current limit drops below 500mA where comparator accuracy degrades significantly (±20% typical). For 3A operation, 1.0–2.0kΩ is optimal to balance accuracy, noise immunity, and PCB area.