Monolithic Power Systems Inc. MP5075GTF-P

Overview

MP5075GTF-P from Monolithic Power Systems is a 5.5V, 2.4A integrated load switch with 38mΩ R_DS(ON), fixed 450μs soft-start, output discharge, and thermal/short-circuit protection. It operates from 3V–5.5V input, delivers up to 3A 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 MP5075GTF-P datasheet, MP5075GTF-P pinout, MP5075GTF-P application, or MP5075GTF-P equivalent, key selection criteria include its SOT563 package footprint, 200ns short-circuit response, <5µA shutdown current, and integrated 150Ω discharge resistor for rapid VOUT decay during disable.

Technical Context

The MP5075GTF-P implements a sense-FET-based current-limit architecture with dual-stage overcurrent protection: primary regulation at ~3A (20µs response) and secondary fast-turn-off at ~7A (200ns response). Its internal charge pump enables full enhancement of the low-R_DS(ON) DMOS FET across the 3V–5.5V VIN range.

UVLO (2.6V typ., 200mV hysteresis) and thermal shutdown (150°C trip, 30°C hysteresis) operate independently of EN control. The fixed 450μs soft-start ramps VOUT linearly to limit dI/dt, while the 1MΩ internal EN pull-down ensures default-off behavior without external biasing.

Key Specifications

Pinout & Package

MP5075GTF-P is housed in a 1.6mm × 1.6mm SOT563 package with exposed thermal pad (pin 4 GND). The six-pin configuration includes two no-connect (NC) terminals (pins 1 and 6) for mechanical stability and layout flexibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22915BYFPR and NCP380HS33DR2G, MP5075GTF-P offers the lowest R_DS(ON) and fastest short-circuit response in a fixed-function SOT563 package, making it optimal for space- and speed-critical USB and SSD applications where minimal external components are mandatory.

Availability

MP5075GTF-P is available at Aetrix Electronics and suitable for USB power distribution, solid-state drives, notebook subsystem power, and portable dongles requiring stable component supply across industrial temperature ranges and long-lifecycle production programs.

Supply support for MP5075GTF-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 MP5075 belongs to MPS's load switch product line, engineered specifically for compact, high-current power gating in battery-powered and USB-connected devices where efficiency, reliability, and minimal footprint are primary design drivers.

FAQ

What is the maximum continuous output current rating for MP5075GTF-P?

The MP5075GTF-P is rated for 2.4A continuous output current under recommended operating conditions (T_A = +25°C, θ_JA = 130°C/W). Its internal current limit is set to 3A typical, providing headroom for transient loads while maintaining thermal safety within the SOT563 package's 1W power dissipation limit.

Does MP5075GTF-P require an external pull-up on the EN pin?

No. MP5075GTF-P includes an internal 1MΩ pull-down resistor on the EN pin, ensuring default-disable behavior when left floating. A logic-high signal ≥1.5V is required to enable the device; no external pull-up is needed unless level-shifting or noise immunity beyond the built-in hysteresis is required.

Can MP5075GTF-P be used with a 3.3V input supply?

Yes. MP5075GTF-P supports input voltages from 3V to 5.5V. At 3.3V, R_DS(ON) increases to 48mΩ (vs. 38mΩ at 5V), resulting in ~19% higher conduction loss at full load-still within acceptable limits for most 3.3V-powered portable subsystems such as SD card interfaces or auxiliary I/O rails.

How does the output discharge function operate?

When EN is low, MP5075GTF-P activates an internal 150Ω pull-down between VOUT and GND. This discharges residual voltage on downstream capacitance (e.g., 10μF) to <10% of VOUT in approximately 1.5ms, preventing unintended operation of powered-off circuitry and supporting clean power sequencing in multi-rail systems.

Is thermal shutdown latched or auto-recovering?

Thermal shutdown is auto-recovering. When junction temperature exceeds 150°C, the device disables VOUT and remains off until temperature falls below 120°C (150°C – 30°C hysteresis). No external reset or EN toggle is required-operation resumes automatically once thermal conditions normalize, supporting unattended recovery in fanless designs.

What PCB layout practices are critical for MP5075GTF-P thermal performance?

Key practices include: placing ≥10 vias under the exposed GND pad connecting to inner-layer ground planes; routing VIN and VOUT traces with ≥0.5mm width and adjacent ground pours; mounting input/output capacitors (10μF each) within 2mm of respective pins; and avoiding thermal isolation of the SOT563 body using minimum 10mm² copper area around the IC.