Monolithic Power Systems Inc. MP62180DH-LF-P

Overview

MP62180DH-LF-P from Monolithic Power Systems is a single-channel, active-low enable, current-limited power distribution switch with 2A continuous load capability and 2.8A typical current limit. It integrates an 75mΩ internal MOSFET, operates from 2.7V to 5.5V input, and delivers reverse-current blocking and thermal shutdown protection for USB power rail management in portable electronics.

For engineers reviewing the MP62180DH-LF-P datasheet, MP62180DH-LF-P pinout, MP62180DH-LF-P application, or MP62180DH-LF-P equivalent, key selection criteria include its 8ms FLAG deglitch time, under-voltage lockout (2.65V rising threshold), 90μA quiescent current, and MSOP8E package with exposed thermal pad tied to GND.

Technical Context

The MP62180DH-LF-P implements a precision current-limiting architecture using internal sense-amplifier feedback to enforce a 2.8A trip threshold during overload or short-circuit events, entering constant-current mode without latch-off. Its EN pin is active-low, distinguishing it from the MP62181 series, and its open-drain FLAG pin asserts after 8ms deglitch delay only on overcurrent-not during UVLO or thermal shutdown.

Thermal protection activates at 140°C junction temperature with 20°C hysteresis, allowing automatic recovery at ~120°C. The device features built-in UVLO (1.95–2.65V hysteresis) and maintains <1μA shutdown current, enabling low-power system-level control in battery-sensitive applications.

Key Specifications

Pinout & Package

MP62180DH-LF-P uses the MSOP8E (3mm × 3mm, 0.65mm pitch) package with exposed thermal pad soldered to GND for enhanced thermal dissipation (θ_JA = 55°C/W). Pin 1 is marked with half-circle index; leads are gull-wing, coplanarity ≤ 0.10mm.

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 NCP45520MUTBG, MP62180DH-LF-P uniquely combines UVLO, reverse-current blocking, and precise 8ms deglitch-making it optimal for USB-compliant, battery-powered systems requiring robust fault containment without external supervision.

Availability

MP62180DH-LF-P is available at Aetrix Electronics and suitable for smartphone USB power switching, notebook PC card slot control, industrial USB hub management, and portable GPS device power distribution requiring stable component supply across production lifecycles.

Supply support for MP62180DH-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 in the US, China, and Taiwan, and global manufacturing partnerships.

The MP62180/MP62181 product line targets portable and embedded systems requiring robust, integrated power-switching solutions with minimal external components-specifically optimized for USB, hot-swap, and peripheral rail protection.

FAQ

What is the function of the FLAG pin on MP62180DH-LF-P?

The FLAG pin is an open-drain output that goes low after an 8ms deglitch period when overcurrent is detected. It remains inactive during power-up, UVLO, or thermal shutdown events-ensuring only sustained faults trigger the flag. An external pull-up resistor is required to interface with MCU GPIOs or status LEDs.

Does MP62180DH-LF-P support reverse current blocking, and how is it verified?

Yes, MP62180DH-LF-P provides reverse current blocking with a maximum leakage of 0.2μA when OUT = 5.5V and IN = GND. This is specified in the Electrical Characteristics table (Rev. 1.0, p.3) and confirmed by internal MOSFET body-diode orientation and control logic that disables conduction path in reverse bias.

Can MP62180DH-LF-P be used with a 3.3V input supply?

Yes, MP62180DH-LF-P operates across 2.7V to 5.5V input range. At 3.3V, its R_DS(on) remains 75mΩ (typ), delivering full 2A continuous current with <165mV dropout. UVLO releases at 2.65V, ensuring stable operation well within 3.3V nominal tolerance.

How does thermal shutdown recovery work on MP62180DH-LF-P?

When junction temperature reaches 140°C, the device shuts off the output. Recovery occurs automatically once die temperature falls to approximately 120°C due to 20°C hysteresis. No external reset or EN toggling is needed-enabling hands-free fault recovery in thermally isolated environments.

Is the MSOP8E package of MP62180DH-LF-P lead-free and RoHS compliant?

Yes, MP62180DH-LF-P carries the "-LF" suffix indicating lead-free, halogen-free, and RoHS-compliant packaging per MPS Quality Assurance standards. The exposed thermal pad is designed for solder reflow to GND plane, supporting IPC-7351B land pattern guidelines.

What is the minimum recommended input capacitance for MP62180DH-LF-P?

A minimum 10μF ceramic or tantalum capacitor is recommended between IN and GND per the Application Information section (p.9). This reduces input transients, improves immunity to short-circuit ringing, and stabilizes the internal charge pump-critical for reliable EN and FLAG operation.

How does the MP62180DH-LF-P differ from MP62181DH-LF-P?

MP62180DH-LF-P has active-low EN logic, while MP62181DH-LF-P uses active-high EN. All other electrical specs-including current limit, R_DS(on), FLAG behavior, and thermal thresholds-are identical. Pinout and package are fully interchangeable; only control logic polarity differs.