Monolithic Power Systems Inc. MP62170EK-1-LF-P

Overview

MP62170EK-1-LF-P from Monolithic Power Systems is a single-channel, active-low current-limited power distribution switch with 1.5A continuous load current capability, 75mΩ R_DS(on), and operation across 2.7V–5.5V input range. It integrates thermal shutdown, under-voltage lockout, reverse current blocking, and an open-drain FLAG output for over-current detection-used in USB power distribution and portable device load switching.

For engineers reviewing the MP62170EK-1-LF-P datasheet, MP62170EK-1-LF-P pinout, MP62170EK-1-LF-P application, or MP62170EK-1-LF-P equivalent, key selection criteria include guaranteed 1.5A current limit accuracy, 8ms FLAG deglitch timing, active-low enable logic, MSOP-8 package thermal performance (θ_JA = 150°C/W), and reverse current blocking functionality.

Technical Context

The MP62170EK-1-LF-P implements a thermally protected N-channel MOSFET power switch with integrated current-sense amplifier and charge-pump gate driver. Its constant-current limiting activates at ≥2.3A short-circuit trip threshold, transitioning to thermal shutdown only if sustained overload raises junction temperature beyond 140°C.

FLAG output provides open-drain fault reporting with 8ms deglitch filtering to suppress transient false triggers, while UVLO ensures operation only above 1.95V rising-edge threshold with 250mV hysteresis-preventing erratic behavior during brown-out conditions.

Key Specifications

Pinout & Package

MP62170EK-1-LF-P is housed in an 8-pin MSOP package (3.0mm × 3.0mm × 1.0mm height) with exposed pad omitted, θ_JA = 150°C/W on 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 AP22653WU-7, MP62170EK-1-LF-P uniquely combines active-low control, reverse current blocking, and deglitched FLAG in MSOP-8-making it optimal for space-constrained USB and portable designs requiring autonomous fault handling without added components.

Availability

MP62170EK-1-LF-P is available at Aetrix Electronics and suitable for USB power distribution, smartphone peripheral switching, and notebook PC docking port protection requiring stable component supply, RoHS-compliant packaging, and full lifecycle traceability.

Supply support for MP62170EK-1-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, headquartered in Kirkland, WA, with global design and support infrastructure.

The MP62170/MP62171 product line delivers compact, thermally robust power distribution switches for portable and interface applications where reliability under fault conditions is critical-designed specifically for USB, mobile, and embedded load-switching use cases.

FAQ

What is the function of the FLAG pin on MP62170EK-1-LF-P?

The FLAG pin is an open-drain output that asserts low after an 8ms deglitch timeout when over-current or thermal shutdown occurs. It remains inactive during power-up transients and UVLO events, providing reliable fault indication without external filtering components.

Does MP62170EK-1-LF-P support reverse current blocking when disabled?

Yes-MP62170EK-1-LF-P blocks reverse current flow from OUT to IN when disabled, eliminating the need for an external Schottky diode in applications like USB OTG or dual-power-source systems where backfeed must be prevented.

What is the maximum allowable input voltage for MP62170EK-1-LF-P?

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 does not protect against overvoltage conditions.

How does the current-limiting behavior respond to a short circuit?

Upon short circuit, MP62170EK-1-LF-P enters constant-current mode at ~2.3A. If the condition persists, die temperature rises until thermal shutdown triggers at 140°C; recovery occurs automatically once junction temperature falls below ~120°C.

Is MP62170EK-1-LF-P pin-compatible with MP62171EK-1-LF-P?

No-MP62170EK-1-LF-P has active-low EN logic, while MP62171EK-1-LF-P uses active-high EN. Pinout and package are identical, but EN signal polarity differs; direct substitution requires board-level logic inversion or firmware adjustment.

What thermal derating applies to MP62170EK-1-LF-P in MSOP-8 package?

In free-air conditions, MSOP-8 limits continuous power dissipation to 0.8W at +25°C ambient. Derating is 6.7mW/°C above +25°C based on θ_JA = 150°C/W, meaning usable current drops to ~1.1A at +85°C ambient without PCB copper heatsinking.

Can MP62170EK-1-LF-P drive capacitive loads up to 470µF?

Yes-the device supports output capacitance up to 470µF as verified in typical performance waveforms. Larger values increase turn-on time but do not compromise stability; a 10µF minimum input capacitor is recommended to suppress supply transients.