Monolithic Power Systems Inc. MP5075LGTF-P

Overview

MP5075LGTF-P from Monolithic Power Systems is a 5.5V, 1A integrated load switch with 80mΩ R_DS(ON), fixed 450μs soft-start, output discharge, and thermal/short-circuit protection. It operates from 3V to 5.5V input, delivers up to 1.4A current limit, and is used in USB power distribution and portable SSDs where inrush control and space-constrained board layout are critical.

For engineers reviewing the MP5075LGTF-P datasheet, MP5075LGTF-P pinout, MP5075LGTF-P application, or MP5075LGTF-P equivalent, key selection criteria include its SOT563 package footprint, 200ns short-circuit response time, <5µA shutdown current, and integrated discharge resistor - all essential for battery-powered USB-C peripheral designs requiring robust fault handling and low quiescent power.

Technical Context

The MP5075LGTF-P implements a sense-FET-based current-limit architecture with internal charge-pump gate drive to achieve 80mΩ on-resistance at 5V input. Its fixed 450μs soft-start prevents backplane voltage droop during hot-plug events in USB and SSD applications.

It integrates dual-level overcurrent protection: primary regulation at 1.4A (20µs response) and fast-turn-off at ~7A (200ns response), plus thermal shutdown at 150°C with 30°C hysteresis and UVLO with 2.6V rising threshold and 200mV hysteresis.

Key Specifications

Pinout & Package

The MP5075LGTF-P is housed in a 1.6mm × 1.6mm SOT563 package with six terminals, two of which (Pins 1 and 6) are no-connect and may be tied to GND for improved thermal performance per layout guidelines.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar load switch applications.

Compared with TPS22915BYFPR and NCP380LSN3T2G, the MP5075LGTF-P offers the lowest R_DS(ON) and fastest short-circuit response, making it optimal for high-density USB-C and SSD applications where thermal headroom and fault containment are critical.

Availability

MP5075LGTF-P is available at Aetrix Electronics and suitable for USB power distribution, solid-state drives, notebook subsystem power, and handheld diagnostic tools requiring stable component supply across production lifecycles.

Supply support for MP5075LGTF-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 operations.

The MP5075L product line targets space-constrained, battery-powered systems requiring highly integrated, low-loss power switching - specifically optimized for USB, SSD, and portable computing subsystems.

FAQ

What is the maximum continuous output current supported by MP5075LGTF-P?

The MP5075LGTF-P provides a typical current limit of 1.4A with tight tolerance (1.2A to 1.6A). It sustains 1A continuously under 25°C ambient with proper PCB thermal design (≥4 cm² copper pour, 2+ vias to inner ground layers), but derates to ~0.7A at 85°C ambient due to thermal shutdown activation at 150°C junction temperature.

Can MP5075LGTF-P be used with a 3.3V input supply?

Yes - the MP5075LGTF-P operates across 3V to 5.5V input range. At 3.3V, R_DS(ON) increases to 110mΩ (vs. 80mΩ at 5V), resulting in ~15% higher conduction loss at 1A. UVLO remains functional with 2.6V rising threshold, ensuring reliable startup even with weak or aging 3.3V rails.

Does MP5075LGTF-P require an external pull-up resistor on the EN pin?

No - the EN pin features an internal 1MΩ pull-down resistor. Leaving EN unconnected defaults the device to OFF state. A logic-high signal (>1.5V) is required to enable; no external pull-up is needed unless active-low control or noise immunity in high-EMI environments demands it.

How does the output discharge function behave under light load conditions?

The internal 150Ω discharge path activates only when EN = low and V_OUT > 0.8V. Under light loads (<100µA), V_OUT decays to <0.5V within 1ms. With heavier loads (e.g., 1mA), discharge is overridden by load current, and external bleeder resistors may be needed to meet specific reset timing requirements.

Is the SOT563 package RoHS-compliant and lead-free?

Yes - the MP5075LGTF-P is fully RoHS-compliant, lead-free, and halogen-free per MPS green policy. The SOT563 package uses matte tin plating on leads and meets JEDEC MO-293 standards, including reflow compatibility up to 260°C peak temperature for lead-free soldering processes.

What is the thermal resistance (θ_JA) of MP5075LGTF-P in standard layout?

Measured per JESD51-7 on a 4-layer PCB, θ_JA is 130°C/W. With recommended layout (GND-connected NC pins, ≥4 thermal vias, 2cm² copper pour under package), actual θ_JA improves to ~65°C/W, enabling 1A operation up to 70°C ambient without thermal shutdown.

Does MP5075LGTF-P support reverse current blocking?

No - the MP5075LGTF-P is a single-N-channel load switch without body-diode reverse-blocking capability. If reverse current flow from VOUT to VIN must be prevented, an external Schottky diode or dedicated reverse-current protection IC is required in series with the output.