Monolithic Power Systems Inc. MP5016GQH-P

Overview

MP5016GQH-P from Monolithic Power Systems is a programmable current-limit switch with integrated 43mΩ power MOSFET, over-voltage clamp (adjustable 3.95V–16.2V), reverse-current blocking gate driver, and thermal shutdown. It operates from 2.7V to 15V input, delivers up to 5A load current, and provides soft-start control via DV/DT pin for hot-swap applications in USB PD and SSD power rails.

For engineers reviewing the MP5016GQH-P datasheet, MP5016GQH-P pinout, MP5016GQH-P application, or MP5016GQH-P equivalent, key selection criteria include adjustable current limit (0.7–5A), MODE-selectable OVP threshold, reverse-blocking MOSFET drive capability, hiccup-mode short-circuit protection with ~1µs response, and QFN-10 (1.5mm×2mm) thermal performance (θJA = 56°C/W).

Technical Context

The MP5016GQH-P integrates a high-side N-channel power MOSFET with 43mΩ R_DS(on) and a dedicated GATE driver for an external reverse-blocking N-MOSFET. Its protection logic combines fast OVP detection (<1µs response), dual-stage current limiting (primary 0.7–5A programmable + secondary 8A hard limit), and UVLO (2.53V rising threshold with 200mV hysteresis).

Soft-start is controlled by DV/DT capacitor and MODE pin configuration, enabling slew rates from 0.4 V/ms (MODE=GND) to 4.8 V/ms (MODE floating). Thermal shutdown activates at 175°C with 50°C hysteresis and auto-retry after 700ms cooldown.

Key Specifications

Pinout & Package

MP5016GQH-P is housed in a thermally enhanced QFN-10 (1.5mm × 2mm) package with exposed thermal pad. Pin 1 is marked by dot; pins 1–2 are VCC, pins 6–7 are SOURCE, and pin 3 is GND - all optimized for high-current routing and minimal PCB trace inductance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-limit switch applications.

Compared with TCK127BG and TPS25982LMLR, MP5016GQH-P uniquely combines wide 2.7–15V operation, MODE-selectable OVP (3.95–16.2V), and dedicated GATE driver for reverse-current blocking - making it the only option among the three for 12V+ hot-swap systems requiring bidirectional fault isolation.

Availability

MP5016GQH-P is available at Aetrix Electronics and suitable for USB Power Delivery source designs, hot-swappable SSD modules, industrial USB 3.1 hubs, and HDD/SSD backplane interfaces requiring stable component supply across automotive-grade temperature ranges and long-lifecycle production programs.

Supply support for MP5016GQH-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP5016 belongs to MPS's eFuse and protection IC product line, engineered specifically for high-reliability hot-swap, USB PD, and storage interface applications demanding programmable current limiting, over-voltage clamping, and reverse-current blocking in compact QFN packages.

FAQ

What is the maximum transient input voltage the MP5016GQH-P can withstand?

The MP5016GQH-P has an absolute maximum transient input voltage rating of 26V across VCC and SOURCE pins, verified per datasheet Absolute Maximum Ratings table. This allows safe operation during hot-swap events and line transients without external TVS diodes in many 12V and 15V systems.

Can the MP5016GQH-P operate with no external current-limit resistor?

Yes - when ILIMIT is left floating, the device defaults to a fixed 2.5A current limit (typical 2.5A at 25°C). This is confirmed in the Electrical Characteristics table under "Current limit at normal operation" with condition "Float ILIMIT". No external resistor is required for basic 2.5A protection.

How does the MODE pin affect both OVP and soft-start behavior?

MODE directly selects OVP clamp voltage (GND=5.75V, VCC=15.2V, resistor=programmable) and also sets the DV/DT slew rate coefficient: MODE=GND yields 0.8 V/ms, MODE=VCC yields 2.0 V/ms, and MODE floating yields 3.8 V/ms (with DV/DT capacitor). Both functions share the same pin to minimize external components.

Is a capacitor required on the GATE pin if no external MOSFET is used?

Yes - a 100pF capacitor from GATE to GND is mandatory when the GATE pin is unused, as specified in the PIN FUNCTIONS section (page 9). This stabilizes the gate driver output and prevents unintended oscillation or leakage-induced turn-on of parasitic capacitance.

What happens during a short-circuit event, and how quickly does protection engage?

Upon short circuit, the MP5016GQH-P detects current exceeding the 8A secondary limit within ~1µs and immediately pulls down the internal MOSFET gate. If the fault persists beyond 2ms, it enters hiccup mode (2ms on / 700ms off), confirmed in the OPERATION section and Typical Performance waveforms on page 8.

Does the MP5016GQH-P support reverse-current blocking without an external MOSFET?

No - reverse-current blocking requires an external N-channel MOSFET driven by the GATE pin. The IC itself contains only a high-side switch; the GATE output sinks current to turn off the external MOSFET during EN disable, UVLO, or thermal shutdown, as detailed in the Reverse Blocking MOSFET Driver section (page 12).

What is the thermal resistance (θJA) of the QFN-10 package under standard conditions?

The MP5016GQH-P QFN-10 (1.5mm×2mm) package has θJA = 56°C/W when mounted on a 2-layer 50mm×50mm PCB (EV5016H-QH-00A test board), per the Recommended Operating Conditions table on page 3. This value assumes proper thermal pad soldering and copper pour.