Monolithic Power Systems Inc. MP62071DH-LF-P

Overview

MP62071DH-LF-P from Monolithic Power Systems is a single-channel, current-limited power distribution switch with 90mΩ internal MOSFET, supporting 2.7V–5.5V input and delivering up to 0.8A continuous load current. It features active-high enable, open-drain FLAG for over-current reporting after 8ms deglitch, thermal shutdown at 140°C, and reverse current blocking - deployed in USB power rails and hot-swap interfaces.

For engineers reviewing the MP62071DH-LF-P datasheet, MP62071DH-LF-P pinout, MP62071DH-LF-P application, or MP62071DH-LF-P equivalent, key selection criteria include its 1.25A typical short-circuit current limit, 140μA quiescent current, UVLO threshold (2.65V rising), 10ms turn-off time, and MSOP8E package with exposed thermal pad tied to GND.

Technical Context

The MP62071DH-LF-P integrates a precision current-sense amplifier and charge-pump gate driver to maintain stable constant-current regulation during overload, with trip current set at 1.45–1.9A under fast-ramp conditions. Its UVLO circuit prevents operation below 1.95V and includes 250mV hysteresis to avoid chatter near threshold.

Thermal protection uses die-temperature sensing with 20°C hysteresis, enabling automatic recovery once junction temperature falls to ~120°C. The open-drain FLAG output asserts low only after confirmed over-current persists ≥8ms, eliminating false triggers from transient surges or power-up glitches.

Key Specifications

Pinout & Package

The MP62071DH-LF-P is housed in an 8-pin MSOP8E package with exposed thermal pad on the underside, requiring connection to GND for optimal thermal performance and EMI control.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-limited power distribution switch applications.

Compared with TPS2051BDBVR and NCP45520MUTBG, the MP62071DH-LF-P uniquely balances compact MSOP8E size, precise 1.25A current limiting, integrated 8ms deglitch, and thermal recovery-making it optimal for USB-C PD sink-side power gating where reliability and footprint matter.

Availability

MP62071DH-LF-P is available at Aetrix Electronics and suitable for USB power distribution, notebook PC auxiliary rails, and set-top box peripheral management requiring stable component supply, RoHS-compliant packaging, and long-term industrial availability.

Supply support for MP62071DH-LF-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 across Asia and North America.

The MP62071 belongs to MPS's power distribution switch product line, engineered specifically for robust, low-footprint load switching in portable and interface-constrained applications such as USB, PCMCIA, and embedded peripheral power domains.

FAQ

What is the maximum allowable input voltage for MP62071DH-LF-P?

The absolute maximum input voltage (IN) is +6V. Operation above this level risks permanent damage. The device is rated for continuous operation from 2.7V to 5.5V, making it compatible with standard 3.3V and 5V system rails. Exceeding 5.5V violates the recommended operating conditions even if below the absolute maximum.

Does MP62071DH-LF-P support reverse current blocking when disabled?

Yes. When EN is low, the internal MOSFET is fully off and blocks reverse current flow from OUT to IN, with measured leakage of only 0.2μA at OUT=5.5V and IN=GND. This eliminates the need for an external blocking diode in battery backup or dual-supply configurations.

How does the FLAG pin behave during thermal shutdown versus over-current events?

The FLAG pin asserts low for both over-current (after 8ms deglitch) and thermal shutdown, with identical open-drain behavior. However, during UVLO or power-up, FLAG remains high-impedance and does not glitch - unlike over-current or thermal faults, which trigger a defined low-state output.

Can MP62071DH-LF-P drive a 100μF output capacitor safely?

Yes. The datasheet specifies turn-on time (Ton) and turn-off time (Toff) with CL=100μF and RL=5Ω: Ton=3ms and Toff=10ms. These values confirm controlled slew rate and absence of destructive inrush, provided the input supply can sustain the peak current during ramp-up.

Is the exposed pad on the MSOP8E package electrically connected internally?

No. The exposed pad is a thermal pad only, not bonded to any internal die node. It must be soldered to a PCB copper pour connected to GND to ensure proper heat dissipation and meet θJA=55°C/W specification. Leaving it floating degrades thermal performance and may cause premature thermal shutdown.

What is the minimum EN pulse width required to guarantee reliable turn-on?

The EN pin has no specified minimum pulse width, but characterization shows full turn-on occurs within 3ms after EN crosses 2V. For robust operation in noisy environments, maintain EN ≥2V for ≥10ms to ensure complete gate drive and output stabilization, especially with large output capacitance.

Does MP62071DH-LF-P require an input bypass capacitor?

Yes. A minimum 10μF ceramic or tantalum capacitor between IN and GND is recommended to suppress input transients and improve immunity to short-circuit-induced ringing. Omitting it increases risk of false UVLO triggering or erratic FLAG behavior during load faults.