Monolithic Power Systems Inc. MP5022AGQV-P

Overview

MP5022AGQV-P from Monolithic Power Systems is a hot-swap protection IC with integrated 3mΩ R_DS(on) power FET, 12A continuous current rating, and programmable current limiting via ISET resistor. It provides in-rush current control, output current monitoring (±3% accuracy at 6–12A), fast short-circuit response (<200ns), and dual UVLO/OVLO protection. Used in server backplane power insertion to prevent voltage droop and system reset during live card insertion.

For engineers reviewing the MP5022AGQV-P datasheet, MP5022AGQV-P pinout, MP5022AGQV-P application, or MP5022AGQV-P equivalent, key selection criteria include adjustable current limit (11.3–13.9A typical), IMON-based real-time load current sensing, LOADEN blanking time programming, and QFN-22 (3mm×5mm) thermal performance with θ_JA = 46°C/W.

Technical Context

The MP5022AGQV-P implements a sense-FET current-limit architecture with external R_SET programming and dual-stage overcurrent protection: primary regulation at ~12.6A (20μs response) and secondary fast-shutdown at 36A (200ns). Its internal charge pump enables full enhancement of the low-R_DS(on) MOSFET without external gate drive.

It integrates independent fault timers (TIMER pin for current-limit timeout, ENTM pin for LOADEN blanking), open-drain PG/FLTB status outputs with 14μs fault propagation delay, and a 4V internal LDO sub-regulator powered from VIN above UVLO. The IMON amplifier delivers 10μA/A gain with 3V compliance and ±3% accuracy across 6–12A.

Key Specifications

Pinout & Package

MP5022AGQV-P is housed in a thermally enhanced QFN-22 package (3mm × 5mm, 0.5mm pitch) with exposed thermal pad (pins 21–22 and EP) for PCB heat sinking. The package supports 2.17W continuous power dissipation at +25°C ambient.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hot-swap protection applications.

Compared with TPS23521RGER and LM5069MMX-2/NOPB, MP5022AGQV-P uniquely combines 12A capacity, 3mΩ R_DS(on), ±3% IMON accuracy, and QFN-22 thermal performance-making it optimal for space-constrained, telemetry-enabled server and storage hot-swap nodes where analog current visibility is required.

Availability

MP5022AGQV-P is available at Aetrix Electronics and suitable for server backplane insertion, network line card deployment, and enterprise SSD power management requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP5022AGQV-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 MP5022A belongs to MPS's Hot-Swap & eFuse product line, engineered specifically for high-reliability, high-current board-level power insertion in datacenter, telecom, and industrial infrastructure equipment.

FAQ

What is the minimum soft-start time for MP5022AGQV-P, and how is it achieved?

The minimum soft-start time is 1ms, achieved by leaving the SS pin floating. Internally, an 8μA current source pulls up the gate voltage, enabling V_GS to reach threshold in ~1ms. This bypasses external capacitor control and is used when rapid turn-on is acceptable and in-rush current is managed by other means.

How does the MP5022AGQV-P detect a damaged MOSFET during power-up?

It monitors V_OUT relative to V_IN; if V_OUT exceeds V_IN − 1V during startup, the device interprets this as a shorted pass FET. FLTB is driven low immediately, and the power FET remains latched off until V_OUT ≤ V_IN − 1V is confirmed, preventing unsafe energization.

Can the IMON pin be used for closed-loop current regulation?

No - IMON is a monitoring-only output with 10μA/A gain and 3V compliance. It provides analog telemetry but lacks feedback path or error amplifier for regulation. Current limiting is handled internally via the ISET resistor and sense-FET topology; IMON serves diagnostic and supervisory functions only.

What is the purpose of the PD pin, and what resistor value should be used?

The PD pin provides active discharge of the output capacitor when the device is disabled. Connect it to OUT through a resistor ≥100Ω; typical values range from 100Ω to 1kΩ. Lower resistance speeds discharge but increases quiescent current during normal operation; higher resistance slows discharge but minimizes standby loss.

Does MP5022AGQV-P support reverse current blocking?

No - the integrated power FET is unidirectional and does not block reverse current from OUT to VIN. External reverse-blocking diodes or MOSFETs must be added if backfeed protection is required, as the device is designed solely for forward hot-swap control.

How is the LOADEN blanking time calculated, and what is its functional impact?

Blanking time t_LDNB = 1.24 × C_ENTM × 10⁶ seconds (e.g., 1μF → 1.24s). During blanking, LOADEN transitions are ignored - only EN controls ON/OFF. This prevents premature shutdown due to timing mismatches between system enable signals and power stabilization.

What thermal derating applies above +25°C ambient?

With θ_JA = 46°C/W, each 1°C rise in ambient reduces maximum allowable power dissipation by 21.7mW. At +70°C ambient, max continuous power drops to ~1.15W, limiting sustained 12A operation unless PCB copper area and airflow are enhanced to improve heat removal.