Monolithic Power Systems Inc. MP5016HGQH-Z

Overview

MP5016HGQH-Z from Monolithic Power Systems is a programmable current-limit switch with integrated 43mΩ N-channel power MOSFET, over-voltage clamp (OVP), reverse-current blocking driver, and soft-start control. It operates from 2.7V to 22V input, delivers up to 5A output current, and provides fast short-circuit protection (<1µs response) for USB power delivery, hot-swap, and SSD/HDD power rails.

For engineers reviewing the MP5016HGQH-Z datasheet, MP5016HGQH-Z pinout, MP5016HGQH-Z application, or MP5016HGQH-Z equivalent, key selection criteria include adjustable current limit (0.7–5A via ILIMIT resistor), MODE-selectable OVP thresholds (5.75V/15.2V or resistor-programmable), DV/DT-controlled slew rate, and GATE-driven external reverse-blocking MOSFET support.

Technical Context

The MP5016HGQH-Z integrates a high-voltage control circuit capable of withstanding 26V transient input while regulating output via internal MOSFET gate drive. Its OVP comparator responds within microseconds to clamp output voltage at user-defined thresholds set by MODE pin logic or resistor divider.

Current limiting uses an internal sense amplifier with 3870:1 ratio; ILIMIT resistor sets threshold per I_LIMIT ≈ 0.55V / R_LIMIT × 3870. Thermal shutdown triggers at 175°C with 50°C hysteresis, and hiccup-mode OCP activates after 2ms overcurrent, cycling 2ms on / 700ms off.

Key Specifications

Pinout & Package

MP5016HGQH-Z is housed in a thermally enhanced QFN-10 (1.5mm × 2mm) package with exposed thermal pad, optimized for compact PCB layouts and efficient heat dissipation in space-constrained modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCKE801BGL,EL and TPS259621RVCR, MP5016HGQH-Z uniquely combines wide-input operation (2.7–22V), programmable OVP clamping, and dedicated GATE driver for external reverse-blocking - making it the only option supporting full USB PD 3.1 compliance with bidirectional fault isolation.

Availability

MP5016HGQH-Z is available at Aetrix Electronics and suitable for USB power delivery, hot-swap server modules, and HDD/SSD power rail protection requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MP5016HGQH-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP5016H product line targets robust, integrated eFuse solutions for high-reliability power distribution in computing, storage, and industrial interfaces - emphasizing programmability, safety certification, and thermal resilience.

FAQ

What is the minimum recommended input capacitor for MP5016HGQH-Z when operating above 15V?

A minimum 22μF ceramic or low-ESR electrolytic input capacitor is required when V_IN exceeds 15V to suppress voltage spikes during short-circuit protection events and prevent damage to the internal 26V-rated MOSFET. This value is specified in the datasheet's Short-Circuit Protection section and validated under SCP stress testing.

Can MP5016HGQH-Z operate with ILIMIT grounded?

Yes - grounding ILIMIT disables the primary current limit but activates an internal 8A secondary current limit for short-circuit protection. The device remains functional but loses programmable current regulation; this mode is intended only for fault-hardened backup protection, not normal operation.

How does the MODE pin affect DV/DT slew rate?

The MODE pin setting directly determines the K1 factor used in Equation (5) for calculating dV/dt: MODE=GND → K1=5.75, MODE=VCC → K1=15.2, MODE=Float → K1=27. This scaling means the same DV/DT capacitor yields slower ramp rates at low MODE and faster ramps at float, enabling coordinated OVP and soft-start tuning.

Is the GATE pin compatible with logic-level N-channel MOSFETs?

Yes - the GATE driver supports standard and logic-level N-MOSFETs. For 3.3V input systems, MPS recommends selecting a MOSFET with V_GS(th) < 1.6V to ensure full enhancement and minimal conduction loss; the GATE sink current exceeds 1.3mA, sufficient to rapidly discharge typical gate charges.

What happens to output discharge when an external reverse-blocking MOSFET is used?

Output discharge is disabled when an external reverse-blocking MOSFET is connected because the discharge path through the internal 540Ω resistor is blocked by the MOSFET's body diode and channel. Discharge only occurs when GATE is unconnected or driven low with no external FET present.

Does MP5016HGQH-Z support automatic restart after thermal shutdown?

Yes - upon junction temperature exceeding 175°C, the device shuts down completely and automatically resumes operation after cooling below ~125°C, with a fixed 700ms delay before re-enabling. This auto-retry behavior is inherent to the thermal protection circuit and requires no external components.

How is the 2.5A fixed current limit achieved when ILIMIT is floating?

When ILIMIT is left unconnected, an internal 220kΩ pull-up resistor biases the current-sense amplifier to a fixed reference, resulting in a nominal 2.5A limit (2.3–2.7A range). This is a factory-trimmed analog function - not software-configured - and is verified across temperature and process corners.