Monolithic Power Systems Inc. MP62071DH-LF

Overview

MP62071DH-LF from Monolithic Power Systems is a single-channel, active-high enable, current-limited power distribution switch with 90mΩ internal MOSFET, 0.8A continuous load rating, 1.25A typical current limit, and thermal shutdown protection. It operates from 2.7V to 5.5V input and is used in USB power distribution, PC Card hot-swap, and notebook PC peripheral rail control.

For engineers reviewing the MP62071DH-LF datasheet, MP62071DH-LF pinout, MP62071DH-LF application, or MP62071DH-LF equivalent, key selection criteria include accurate 1.25A trip current threshold, 8ms FLAG deglitch timing, reverse current blocking, under-voltage lockout (2.65V rising edge), and MSOP8E package with exposed pad for thermal management.

Technical Context

The MP62071DH-LF integrates a precision current-sense amplifier and charge-pump gate driver to maintain constant-current mode during overloads, with trip current specified at 1.45–1.9A under ramped-load conditions. Its UVLO circuit activates at 1.95V (rising) with 250mV hysteresis, ensuring clean startup above minimum supply.

Thermal protection triggers at 140°C junction temperature with 20°C hysteresis, and the open-drain FLAG pin asserts low after 8ms deglitch timeout-excluding UVLO and thermal events-to avoid false fault reporting during transient overload or power-up.

Key Specifications

Pinout & Package

MP62071DH-LF is housed in an 8-pin MSOP8E package with exposed thermal pad (connected to GND), offering θ_JA = 55°C/W and θ_JC = 12°C/W on a 4-layer PCB per JESD51-7.

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, MP62071DH-LF uniquely combines reverse current blocking, 8ms deglitched FLAG, and UVLO in a thermally enhanced MSOP8E-making it optimal for space-constrained, multi-rail USB and notebook designs requiring robust fault handling without external components.

Availability

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

Supply support for MP62071DH-LF 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.

The MP62071 belongs to MPS's power distribution switch product line, engineered for reliable hot-swap and load management in portable and embedded systems where fault resilience, small footprint, and minimal external components are critical.

FAQ

What is the maximum allowable continuous current for MP62071DH-LF at +85°C ambient?

The MP62071DH-LF delivers 0.8A continuous current at TA = +85°C with proper PCB thermal design (4-layer board, exposed pad soldered to GND plane). Derating is not required within its specified –40°C to +85°C operating range, as thermal shutdown activates only if junction exceeds 140°C under sustained overload.

Does MP62071DH-LF require an external capacitor on the FLAG pin for debouncing?

No. The MP62071DH-LF includes an internal 8ms deglitch timer on the FLAG pin, eliminating the need for external RC networks. This feature ensures fault signals are only asserted after confirmed over-current events, improving system reliability in noisy environments.

Can MP62071DH-LF be used with a 2.7V input supply?

Yes. The device operates across 2.7V to 5.5V input, with under-voltage lockout releasing at 1.95V (rising edge). At 2.7V, it maintains full 0.8A capability and meets all electrical specs, including 90mΩ R_DS(on) and 140μA quiescent current, making it suitable for low-voltage embedded rails.

How does reverse current blocking function when EN is low?

When EN is low, the internal MOSFET is fully off and the body diode is reverse-biased, preventing current flow from OUT to IN. This blocking occurs without external components and is verified down to 0.2μA reverse leakage at OUT = 5.5V and IN = GND, ensuring rail isolation in multi-source systems.

Is the exposed thermal pad on MP62071DH-LF electrically connected internally?

Yes-the exposed pad is internally connected to GND and must be soldered to a PCB GND plane for both thermal performance (θ_JA = 55°C/W) and EMI suppression. Leaving it floating degrades thermal resistance by >30% and may cause instability under heavy load.

What happens to the output during thermal shutdown?

During thermal shutdown, the internal MOSFET turns off completely, disconnecting IN from OUT. Output voltage collapses to near 0V. Recovery occurs automatically once die temperature falls below 120°C (20°C hysteresis), restoring normal operation without requiring EN toggling or power cycle.

Does MP62071DH-LF support simultaneous multi-rail sequencing?

No-it is a single-channel switch with one EN input and one OUT network. For multi-rail sequencing, multiple MP62071DH-LF units must be used with staggered EN control via MCU GPIO or dedicated sequencer IC, leveraging their independent FLAG outputs for fault monitoring.