Monolithic Power Systems Inc. MP62130EK-LF-Z

Overview

MP62130EK-LF-Z from Monolithic Power Systems is a single-channel, current-limited power distribution switch with active-low enable, 500mA continuous load current rating, 90mΩ R_DS(ON), and integrated output discharge. It operates from 2.7V to 5.5V input and delivers overcurrent and thermal protection in USB power distribution and portable device load switching.

For engineers reviewing the MP62130EK-LF-Z datasheet, MP62130EK-LF-Z pinout, MP62130EK-LF-Z application, or MP62130EK-LF-Z equivalent, this device supports precise current limiting (650mA typical short-circuit trip), 8ms FLAG deglitching, reverse current blocking, under-voltage lockout (2.3V typ), and MSOP-8 thermal performance (θ_JA = 150°C/W).

Technical Context

The MP62130EK-LF-Z integrates a low-R_DS(ON) N-channel MOSFET with current-sense amplifier, thermal shutdown circuitry (140°C trip, 20°C hysteresis), and UVLO (2.3V rising edge). Its open-drain FLAG pin reports overcurrent after an 8ms deglitch timeout-ensuring immunity to transient faults without external RC filtering.

It implements constant-current limiting during overload (550–650mA range) and automatic thermal shutdown recovery at ~120°C junction temperature. The output discharge function activates on disable or UVLO, sinking through a 100Ω internal path to rapidly deplete external output capacitance.

Key Specifications

Pinout & Package

MP62130EK-LF-Z is housed in an MSOP-8 package (3.0mm × 3.0mm × 1.0mm height), optimized for space-constrained portable designs. Pin 1 is marked with a half-circle; leads are gull-wing, JEDEC MO-187 AA compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MP62130EK-LF-Z, MP62055DJ-LF-Z trades discharge functionality for higher current capacity, while TPS22965DRLR reduces IQ by 79× but lacks thermal hysteresis and output discharge-requiring external design compensation.

Availability

MP62130EK-LF-Z is available at Aetrix Electronics and suitable for smartphone power switching, USB host port protection, and portable GPS power management requiring stable component supply and RoHS-compliant packaging.

Supply support for MP62130EK-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 core expertise in DC/DC conversion, LED drivers, and load switches.

The MP62130 product line targets compact, thermally robust power distribution in portable electronics-designed specifically for USB-compliant 5V rail switching with integrated protection and minimal external components.

FAQ

What is the logic polarity of the EN pin on MP62130EK-LF-Z?

The EN pin on MP62130EK-LF-Z is active-low: the switch turns ON when EN is pulled below 0.8V (logic low), and OFF when EN is ≥2.0V. This distinguishes it from the MP62131 variant, which uses active-high enable logic.

Does MP62130EK-LF-Z require an external pull-up on the FLAG pin?

Yes-FLAG is an open-drain output and must be pulled up externally (typically to IN or system 3.3V rail) to generate a valid logic-high signal during normal operation. A 10kΩ resistor is commonly used for noise immunity and fast rise time.

Can MP62130EK-LF-Z safely drive a 100µF output capacitor?

Yes-the device's 100Ω internal discharge path fully discharges a 100µF capacitor in under 10ms when disabled, and its 8ms FLAG deglitch prevents false triggering during inrush. No external discharge circuitry is required.

What happens during thermal shutdown, and how does recovery work?

At 140°C junction temperature, MP62130EK-LF-Z disables the output MOSFET and asserts FLAG low. Recovery occurs automatically once die temperature falls to ~120°C due to built-in 20°C hysteresis-no reset or enable toggle is needed.

Is reverse current blocking enabled during all operating states?

Yes-reverse current blocking is inherent to the internal N-channel MOSFET structure and remains active whether the device is enabled or disabled, preventing backfeed from OUT to IN even during UVLO or EN deassertion.

How does under-voltage lockout (UVLO) interact with the EN pin?

UVLO operates independently of EN: if VIN drops below 1.95V (rising edge), the device shuts off regardless of EN state. Once VIN rises above 2.65V, UVLO releases-but the switch only turns on if EN is also asserted (low for MP62130EK-LF-Z).

What is the maximum allowable continuous power dissipation in MSOP-8 at +25°C ambient?

Per datasheet, the MSOP-8 package has θ_JA = 150°C/W and T_J(MAX) = 150°C, yielding PD_MAX = (150°C − 25°C) / 150°C/W = 0.83W. Exceeding this risks thermal shutdown during sustained 500mA loads at elevated ambient temperatures.