Monolithic Power Systems Inc. MP62071DH-LF-Z

Overview

MP62071DH-LF-Z from Monolithic Power Systems is a single-channel, active-high enable, current-limited power distribution switch with 90mΩ internal MOSFET, 0.8A continuous current rating, and 1.25A typical short-circuit current limit. It operates from 2.7V to 5.5V input, features thermal shutdown at 140°C, and delivers reverse current blocking for USB power distribution and hot-swap applications.

For engineers reviewing the MP62071DH-LF-Z datasheet, MP62071DH-LF-Z pinout, MP62071DH-LF-Z application, or MP62071DH-LF-Z equivalent, key selection criteria include accurate 1.25A trip current threshold, 8ms FLAG deglitch time, under-voltage lockout (2.65V rising edge), open-drain FLAG reporting, and MSOP8E package thermal performance (θJA = 55°C/W).

Technical Context

The MP62071DH-LF-Z integrates a precision current-sense amplifier and charge-pump gate driver to maintain constant-current mode during overload, with trip current specified at 1.45A–1.9A under ramped load conditions. Its UVLO circuit enforces 2.65V minimum input before enabling, and hysteresis ensures stable re-enabling after brownout recovery.

Thermal protection uses die-temperature sensing with 20°C hysteresis and automatic recovery at ~120°C. The open-drain FLAG pin asserts low after 8ms deglitch timeout only for over-current events-not for UVLO or thermal shutdown-enabling clean fault isolation in multi-rail systems.

Key Specifications

Pinout & Package

MP62071DH-LF-Z is housed in an 8-pin MSOP8E package with exposed thermal pad (connected to GND), offering θJA = 55°C/W on standard 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 TPS22965DSGR and NIS5132MN, MP62071DH-LF-Z uniquely combines reverse current blocking, 8ms deglitched FLAG, and 140°C thermal shutdown-making it optimal for USB and hot-swap designs requiring autonomous fault containment and backfeed prevention.

Availability

MP62071DH-LF-Z is available at Aetrix Electronics and suitable for USB power distribution, notebook PC auxiliary rails, and telecom line card protection requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.

Supply support for MP62071DH-LF-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 MP62071 belongs to MPS's power distribution switch product line, engineered specifically for reliable, low-footprint current-limiting in portable and infrastructure equipment where fault autonomy and thermal resilience are critical.

FAQ

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

The absolute maximum input voltage (IN) is +6V. Operation above this risks permanent damage. The recommended operating range is 2.7V to 5.5V, covering standard USB 5V and industrial 3.3V rails while maintaining full current-limit accuracy and thermal margin.

Does MP62071DH-LF-Z support reverse current flow from OUT to IN?

Yes. The device blocks reverse current with leakage limited to 0.2μA when OUT = 5.5V and IN = GND. This feature prevents backfeeding into upstream supplies-a requirement in multi-source USB hubs and redundant power architectures.

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

FLAG asserts low only after 8ms deglitch timeout for over-current conditions. It remains high during UVLO activation or thermal shutdown-ensuring unambiguous fault classification without external logic decoding.

Can MP62071DH-LF-Z drive a 100μF output capacitor without instability?

Yes. Turn-on time is specified at 3ms with CL = 100μF and RL = 5Ω. The internal charge pump and gate driver are designed to safely manage large capacitive loads without oscillation or excessive inrush overshoot.

Is the MSOP8E package lead-free and RoHS compliant?

Yes. The "-LF-Z" suffix denotes lead-free (Pb-free) finish and RoHS-compliant packaging. The device meets EU RoHS Directive 2011/65/EU and is UL Recognized (E322138), with exposed pad soldered to GND for thermal and EMI performance.

What is the minimum EN logic high voltage required to activate the switch?

The EN pin requires ≥2.0V to register as logic high and enable the internal MOSFET. Below 0.8V, the device remains disabled with <1μA shutdown current. This 1.2V hysteresis ensures noise immunity in noisy board environments.

How does thermal shutdown recovery work without external intervention?

After thermal shutdown at 140°C, the device automatically resumes operation once the junction temperature falls to approximately 120°C due to built-in 20°C hysteresis-no reset pulse or EN toggling is needed, enabling graceful self-recovery in thermally constrained layouts.