Monolithic Power Systems Inc. MP5016GQH-L-Z

Overview

MP5016GQH-L-Z from Monolithic Power Systems is a programmable current-limit switch with integrated 43mΩ power MOSFET, over-voltage clamp (selectable 5.75V or 15.2V), reverse-current blocking gate driver, and thermal latch-off shutdown. It operates across 2.7–22V input, supports 0.7–5A adjustable current limit via ILIMIT resistor, and delivers fast short-circuit response (<1µs) for hot-swap and USB power distribution protection.

For engineers reviewing the MP5016GQH-L-Z datasheet, MP5016GQH-L-Z pinout, MP5016GQH-L-Z application, or MP5016GQH-L-Z equivalent, key selection criteria include programmable dV/dt slew rate (0.4–4.8 V/ms), dual-mode OVP threshold selection via MODE pin, reverse-blocking MOSFET drive capability, latch-off OCP/OTP behavior, and QFN-10 (1.5×2mm) thermal performance (θJA = 56°C/W).

Technical Context

The MP5016GQH-L-Z implements a closed-loop current-limit control architecture with internal current-sense ratio of 3870:1, enabling precise 0.7–5A regulation via external ILIMIT resistor. Its OVP comparator responds in <1µs to clamp output at user-selected thresholds (5.75V or 15.2V) by pulling down the internal MOSFET gate.

Soft-start is controlled by DV/DT capacitor and MODE state, yielding programmable dV/dt (0.4–4.8 V/ms); reverse-current blocking is executed by GATE pin sinking current during EN disable, UVLO, or thermal shutdown - supporting external N-channel MOSFETs with VGS(th) < 1.6V for low-drop applications.

Key Specifications

Pinout & Package

MP5016GQH-L-Z is housed in a thermally enhanced QFN-10 package (1.5mm × 2mm, 0.5mm pitch) with exposed thermal pad. The package supports 2.23W continuous power dissipation at TA = +25°C and features optimized copper area for SOURCE/VCC pads to minimize trace resistance and thermal impedance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS25942L and RTQ2134B, MP5016GQH-L-Z uniquely combines MODE-selectable OVP (5.75V/15.2V), integrated reverse-blocking gate driver, and QFN-10 footprint - making it optimal for space-constrained USB PD and hot-swap applications requiring minimal external components and deterministic analog control.

Availability

MP5016GQH-L-Z is available at Aetrix Electronics and suitable for USB Power Distribution, HDD/SSD hot-swap interfaces, and wireless modem data card protection requiring stable component supply, full RoHS compliance, and guaranteed long-term lifecycle support.

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

The MP5016 product line targets robust front-end power protection for high-reliability computing and communications systems - emphasizing analog-programmable safety features, thermal resilience, and minimal external component count.

FAQ

What is the minimum current limit achievable with MP5016GQH-L-Z?

The MP5016GQH-L-Z achieves a minimum current limit of 0.7A using a 3kΩ resistor from ILIMIT to GND. This value is confirmed in the Electrical Characteristics table (RLIMIT = 3kΩ, ILimit_NO = 0.6–0.9A). Below 0.38A, the device enters sleep mode and disables current-limit logic.

Can MP5016GQH-L-Z operate with a 3.3V input supply?

Yes - the MP5016GQH-L-Z supports input voltages down to 2.7V, making it fully compatible with 3.3V systems. For reverse-blocking operation at 3.3V, an external N-MOSFET with VGS(th) < 1.6V is recommended to ensure full turn-on with the GATE drive signal.

How does the MODE pin affect soft-start behavior?

The MODE pin directly sets the dV/dt slew rate multiplier: MODE = GND yields 0.8 V/ms, MODE = VCC yields 2 V/ms, and MODE = float yields 3.8 V/ms (with DV/DT floating). This interaction is documented in Table 3 and Equation (5) of the datasheet.

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. This stabilizes the gate driver output and prevents oscillation or false triggering due to parasitic coupling, as specified in the PIN FUNCTIONS section.

What happens when the current limit is exceeded for longer than 2ms?

The MP5016GQH-L-Z enters latch-off mode and disables the internal MOSFET until EN is pulled low or VIN is cycled. This behavior is confirmed in the OPERATION section and Electrical Characteristics table under "Current Limit" and "OTP" notes.

Does MP5016GQH-L-Z provide output discharge functionality?

Yes - it integrates a 540Ω resistive discharge path active during EN shutdown or UVLO. However, this path is blocked when an external reverse-blocking MOSFET is used, as the MOSFET's body diode prevents discharge current flow from SOURCE to GND.

What is the absolute maximum transient input voltage rating?

The MP5016GQH-L-Z withstands up to 26V transient input voltage on VCC and SOURCE pins, as stated in the ABSOLUTE MAXIMUM RATINGS table. This allows operation in noisy industrial environments without additional TVS clamping in many cases.