Monolithic Power Systems Inc. MP62061DH-LF

Overview

MP62061DH-LF from Monolithic Power Systems is a single-channel, active-high current-limited power distribution switch with 700mA continuous current capability, 1A accurate current limit, and 80mΩ on-resistance. It operates from 2.7V to 5.5V input and integrates thermal shutdown, under-voltage lockout, reverse current blocking, and open-drain FLAG fault reporting-designed for USB power distribution in portable electronics.

For engineers reviewing the MP62061DH-LF datasheet, MP62061DH-LF pinout, MP62061DH-LF application, or MP62061DH-LF equivalent, key selection criteria include guaranteed 1A current limit accuracy, 8ms FLAG deglitch timing, MSOP8E package thermal performance (θJA = 55°C/W), and reverse current blocking without external components.

Technical Context

The MP62061DH-LF implements an integrated N-channel MOSFET with internal current-sense amplifier and charge-pump gate driver to maintain precise constant-current regulation during overload. Its trip current threshold (1.4–1.8A) triggers transition into current-limit mode before thermal shutdown activates at 140°C.

FLAG output uses an 8ms deglitch circuit to suppress transient overcurrent false alarms but remains unfiltered during thermal or UVLO events. EN input supports CMOS/TTL logic levels (VIH ≥ 2V, VIL ≤ 0.8V), and reverse current blocking prevents backflow when OUT > IN with IN grounded.

Key Specifications

Pinout & Package

MP62061DH-LF is housed in an MSOP8E package with exposed thermal pad (must be soldered to PCB GND plane). Pin count: 8 terminals. Package dimensions: 3.0 × 3.0 × 0.95 mm (JEDEC MO-187 AA-T compliant).

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, MP62061DH-LF uniquely balances 700mA continuous delivery, integrated reverse blocking, MSOP8E thermal efficiency, and 8ms deglitched FLAG-making it optimal for space-constrained 3.3V/5V portable systems where backfeed prevention and fault reliability are critical.

Availability

MP62061DH-LF is available at Aetrix Electronics and suitable for smartphone peripheral power, USB-C port switching, and set-top box USB hub applications requiring stable component supply, RoHS-compliant packaging, and long-term industrial availability.

Supply support for MP62061DH-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 MP62061 belongs to MPS's power distribution switch product line, engineered for compact, thermally robust load switching in battery-powered and USB-powered consumer electronics.

FAQ

What is the maximum allowable input voltage for MP62061DH-LF?

The absolute maximum input voltage is +6.0V, but the recommended operating range is 2.7V to 5.5V. Operation above 5.5V risks permanent damage even for brief transients, and UVLO ensures no switching occurs below 2.7V.

Does MP62061DH-LF require an external pull-up resistor on the FLAG pin?

Yes-FLAG is an open-drain output and requires an external pull-up resistor (typically 10kΩ to 5V or 3.3V) to generate a valid logic-high signal when no fault is present.

Can MP62061DH-LF drive capacitive loads up to 1000μF?

Yes-the device specifies turn-on time of 3ms with CL = 100μF and RL = 11Ω. For 1000μF, inrush current remains within 1.25A limit, but startup time increases proportionally; verify system timing margins.

How does thermal shutdown recover after a fault?

After shutdown at 140°C, the device remains off until junction temperature falls to approximately 120°C (20°C hysteresis), then automatically resumes normal operation if EN remains high and input voltage is valid.

Is the exposed pad on MP62061DH-LF electrically connected internally?

Yes-the exposed pad is internally tied to GND and must be soldered to a PCB GND plane. It serves both as the primary thermal path (reducing θJA by ~30%) and as a low-inductance ground return.

What happens during power-up if the output is already shorted?

If OUT is shorted before EN is asserted, the device detects the fault immediately upon enable and enters constant-current mode at 1A-preventing surge current while allowing safe diagnostic window before thermal shutdown.

Does MP62061DH-LF support load-switch sequencing in multi-rail systems?

No-it lacks programmable delay or synchronization features. Sequencing must be implemented externally via controlled EN timing from a supervisor IC or microcontroller GPIO.