Monolithic Power Systems Inc. MP62170ES-1-LF-P

Overview

MP62170ES-1-LF-P from Monolithic Power Systems is a single-channel, active-low enable, current-limited power distribution switch with 1.5A continuous load current capability, 75mΩ R_DS(ON), and 2.7V–5.5V input voltage range. It integrates over-current protection (trip threshold 2.5A), thermal shutdown (140°C), and under-voltage lockout (1.95V) for USB VBUS and portable system power rail control.

For engineers reviewing the MP62170ES-1-LF-P datasheet, MP62170ES-1-LF-P pinout, MP62170ES-1-LF-P application, or MP62170ES-1-LF-P equivalent, key selection considerations include active-low EN logic, open-drain FLAG response timing (8ms deglitch), reverse current blocking, and SOIC8 package thermal performance (θ_JA = 90°C/W).

Technical Context

The MP62170ES-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 ≥2.5A (typical trip), sustaining regulated output during overload without latch-off unless thermal shutdown triggers.

It features UVLO with 250mV hysteresis, 90µA quiescent supply current when enabled, and open-drain FLAG reporting over-current or thermal fault after 8ms deglitch-ensuring immunity to transient spikes while eliminating external RC filtering.

Key Specifications

Pinout & Package

MP62170ES-1-LF-P is housed in an 8-pin SOIC package (5.0mm × 6.2mm, 1.27mm pitch) with no exposed pad. Thermal resistance θ_JA = 90°C/W on standard 4-layer PCB.

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 AP2171SG-13, MP62170ES-1-LF-P delivers lower conduction loss (75mΩ), integrated reverse current blocking, and deterministic thermal recovery - making it optimal for space-constrained, battery-sensitive USB power switches requiring autonomous fault handling.

Availability

MP62170ES-1-LF-P is available at Aetrix Electronics and suitable for smartphone USB power switching, notebook PC VBUS control, portable GPS hot-swap protection, and set-top box USB hub power management requiring stable component supply, RoHS-compliant packaging, and full traceability.

Supply support for MP62170ES-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, with design centers in the US, China, and Taiwan.

The MP62170/MP62171 product line targets robust, low-footprint power distribution in portable and USB-powered systems - emphasizing integrated protection, minimal external components, and guaranteed current-limit accuracy across temperature.

FAQ

What is the maximum allowable input voltage for MP62170ES-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 ensures safe turn-on only above 1.95V.

Does MP62170ES-1-LF-P support reverse current blocking when disabled?

Yes - it actively blocks reverse current flow from OUT to IN when disabled, with measured reverse leakage of just 0.2µA at V_OUT = 5.5V and V_IN = GND. This eliminates the need for an external blocking diode in battery backup or dual-rail systems.

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

FLAG asserts low identically for both over-current and thermal shutdown, with identical 8ms deglitch timing. The device does not distinguish fault type on FLAG; system firmware must correlate FLAG assertion with EN state, load conditions, and temperature monitoring to diagnose root cause.

Can MP62170ES-1-LF-P be used with 3.3V logic-level microcontrollers?

Yes - its EN input accepts TTL/CMOS logic levels: logic low ≤0.8V (disable) and logic high ≥2.0V (enable). With typical MCU GPIO outputs of 0V/3.3V, direct interfacing is fully compatible without level-shifting circuitry.

What is the thermal shutdown recovery behavior?

After thermal shutdown at 140°C, the device remains off until junction temperature falls to approximately 120°C due to built-in 20°C hysteresis. No external reset is required - automatic recovery occurs once sufficient cooling is achieved, supporting self-healing power architectures.

Is the SOIC8 package lead-free and RoHS compliant?

Yes - the "-LF" suffix in MP62170ES-1-LF-P explicitly denotes lead-free, RoHS-compliant construction. The part meets JEDEC J-STD-020 moisture sensitivity level MSL3 and is qualified for reflow soldering per IPC/JEDEC J-STD-020.