Monolithic Power Systems Inc. MP5087AGG-P

Overview

MP5087AGG-P from Monolithic Power Systems is a 5.5V, 7A low-R_DS(ON) load switch with programmable current limit (via ILIM pin), power-good indicator, and active output discharge function. It integrates a 10mΩ FET in a 2×2mm QFN-12 package, operates from 0.5V to 5.5V input, delivers <1μA shutdown current, and supports soft-start slew-rate control for inrush mitigation in portable power rails.

For engineers reviewing the MP5087AGG-P datasheet, MP5087AGG-P pinout, MP5087AGG-P application, or MP5087AGG-P equivalent, this device is selected for high-current, space-constrained load switching where precise overcurrent setting, fast short-circuit response (<200ns), and VIN-monitored PG signaling are required - especially in battery-powered systems with dynamic load profiles.

Technical Context

The MP5087AGG-P implements a sense-FET-based current-limit architecture with external resistor programming (ILIM pin), enabling accurate 1.5–7A current limit range. Its push-pull PG output asserts high only when VIN exceeds 2.8V with 100mV hysteresis, providing reliable upstream voltage monitoring.

Short-circuit protection uses dual-stage response: primary regulation at programmed limit (~20µs), plus secondary fast-turnoff at ~13A with 200ns latency and 80µs auto-recovery. Thermal shutdown activates at 155°C with 30°C hysteresis, and output discharge engages via 200Ω internal pull-down when EN or VCC is inactive.

Key Specifications

Pinout & Package

MP5087AGG-P is housed in a thermally enhanced 2mm × 2mm QFN-12 package with exposed thermal pad (EP) on underside. Pin 1 is marked by dot; pins are numbered counterclockwise from top-left corner in top view.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22975 and NIS5130MNTBG, MP5087AGG-P uniquely combines programmable current limiting, integrated output discharge, and sub-200ns short-circuit response in a 2×2mm footprint - making it optimal for compact, high-reliability portable power domains demanding both precision and speed.

Availability

MP5087AGG-P is available at Aetrix Electronics and suitable for notebook power rails, tablet peripheral switching, and solid-state drive enable circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP5087AGG-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 MP5087A belongs to MPS's load switch product line, engineered specifically for space-constrained, high-current portable electronics where efficiency, reliability, and integration density are critical - not general-purpose power distribution.

FAQ

What is the minimum recommended soft-start capacitor value for MP5087AGG-P?

The datasheet specifies a minimum soft-start capacitor of 4.7nF. Using smaller values risks uncontrolled VOUT rise time due to insufficient SS pin voltage ramping, potentially triggering current limit during startup. Ceramic capacitors are preferred for stability and low ESR.

Can MP5087AGG-P operate with VIN below 1V?

Yes - MP5087AGG-P supports input voltages as low as 0.5V, enabling use in single-cell LiFePO₄ or emerging low-voltage battery chemistries. However, VCC must remain ≥3V for internal circuit operation, so a separate bias rail is required below 3V VIN.

How does the ILIM resistor affect current limit accuracy?

The current limit follows I_LIM = 82kΩ / R_LIM, with ±10% tolerance over temperature and process. For a 7A target, R_LIM = 11.7kΩ (1% metal-film); using tighter-tolerance resistors improves trip repeatability across production units.

Is the PG pin compatible with 1.8V logic systems?

No - PG is a push-pull output referenced to VCC (3–5.5V). Its low-level output is ≤0.4V at 1mA sink, but high level equals VCC. Direct interfacing with 1.8V logic requires a level shifter or external pull-down to ensure valid low state recognition.

Does MP5087AGG-P support reverse current blocking?

No - MP5087AGG-P is a unidirectional high-side switch. It does not block reverse current from VOUT to VIN. For reverse-blocking applications, an external Schottky diode or dedicated reverse-current protection IC is required.

What thermal derating applies above 85°C ambient?

With θ_JA = 80°C/W on a 4-layer PCB, maximum continuous power dissipation drops linearly: at 85°C ambient, PD_MAX = (125°C − 85°C)/80 = 0.5W. At 7A and 10mΩ, P_COND = 490mW - confirming full 7A operation remains viable up to ~90°C ambient with proper layout.

Can the output discharge function be disabled?

No - output discharge is automatic and unconditional when EN is low or VCC falls below UVLO. There is no register, pin, or external control to disable it. If discharge is undesirable, the load must be isolated with a series diode or alternative topology.