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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Hot Swap Controllers

Monolithic Power Systems Inc. MPQ5066GQV-AEC1-P

Name: MPQ5066GQV-AEC1-P
Brand: Monolithic Power Systems Inc.
SKU: MPQ5066GQV-AEC1-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ5066GQV-AEC1-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Hot Swap Controllers

Package:: 22-PowerVFQFN

Datasheet:: MPQ5066GQV-AEC1-P.pdf

Description:: 28V, 6A, 7M RDS(ON) HOT-SWAP PRO

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Product details

Overview

MPQ5066GQV-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified hot-swap protection IC with integrated 7mΩ R_DS(ON) power MOSFET, adjustable 5–15A current limit, ±10% current monitor accuracy, and 200ns short-circuit response. It protects automotive infotainment and ADAS subsystems against input transients, output shorts, inrush current, and thermal overload.

For engineers reviewing the MPQ5066GQV-AEC1-P datasheet, MPQ5066GQV-AEC1-P pinout, MPQ5066GQV-AEC1-P application, or MPQ5066GQV-AEC1-P equivalent, key selection criteria include configurable auto-retry/latch-off fault behavior, IMON-based real-time current monitoring, PG/FLTB open-drain status signaling, and QFN-22 (3mm×5mm) package suitability for space-constrained automotive PCB layouts.

Technical Context

The MPQ5066GQV-AEC1-P implements a sense-FET current-limit architecture with external R_SET-programmed threshold (5–15A), supported by fast 20μs primary current-limit regulation and sub-200ns secondary short-circuit shutdown via 100mA gate discharge. Its internal charge pump enables full enhancement of the low-R_DS(ON) MOSFET across 6–28V input range.

It integrates dual-mode fault management: AUTO pin configuration selects between latch-off (grounded) or auto-retry/hiccup (floating/high) operation, with thermal shutdown at 167°C (28°C hysteresis) and UVLO thresholds at 4.15V (rising) / 2.7V (falling). PG asserts high only when V_FB > 0.6V, V_GS > 3V, and V_OUT > V_IN − 1V - ensuring robust power-good sequencing.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	6V to 28V - supports 12V/24V automotive battery rails with margin for load dump and cold-crank.
R_DS(ON)	7mΩ typical - minimizes conduction loss (≤500mW at 6A) and thermal rise in high-current paths.
Current Limit Range	5A to 15A - set externally via R_SET; enables precise matching to downstream load requirements.
Current Monitor Accuracy	±10% at 6A - provides reliable real-time load current feedback for system diagnostics and safety logging.
Short-Circuit Response	200ns - limits peak fault current before control loop engagement, protecting upstream supply and traces.
Thermal Shutdown	167°C with 28°C hysteresis - prevents thermal runaway while enabling automatic recovery in auto-retry mode.
PG/FLTB Outputs	Open-drain, 0.3V max VOL @ 1mA - compatible with 3.3V/5V logic interfaces for fault reporting and power sequencing.

Pinout & Package

MPQ5066GQV-AEC1-P is housed in a thermally enhanced QFN-22 (3mm × 5mm) package with exposed VIN pads (pins 21–22) for low-impedance power delivery and improved heat dissipation. The 0.5mm pitch layout supports high-density automotive PCB routing.

Pin/Terminal	Circuit Role	Design Meaning
1 EN	Enable control input	Active-high logic interface (1.8V threshold); enables device startup and disables gate drive when pulled low.
2 AUTO	Fault recovery mode select	Floating or >2.5V = auto-retry; grounded = latch-off - determines system-level fault handling strategy.
4 TIMER	Fault timeout timing node	External capacitor sets insertion delay, fault timeout, and restart timing (200µA charge current).
5 ISET	Current limit programming	Resistor-to-ground sets primary current limit (e.g., 10kΩ → 12.5A typical) via internal 0.6V reference.
6 SS	Soft-start ramp control	Capacitor-to-ground controls output voltage slew rate; floating = ~1ms minimum ramp time.
7 GND	Power and signal reference	Common return path for internal regulators, current sense, and logic; must be low-impedance.
8 IMON	Analog current monitor output	Voltage proportional to load current (e.g., 100mV/A with 10kΩ to ground); requires 100nF bypass.
9 FLTB	Open-drain fault indicator	Pulled low on overcurrent, thermal shutdown, or damaged-MOSFET detection; 20µs propagation delay.
10 PG	Open-drain power-good flag	Asserts high only after stable V_OUT, sufficient V_GS, and valid FB feedback - enables safe system enablement.
11 FB	Output voltage feedback	0.6V rising threshold with 60mV hysteresis; used to configure PG trip point and validate regulation.
12 PD	Output discharge control	Connects internal 500Ω pull-down to V_OUT during UVLO or EN disable - prevents floating rail during power loss.
13–20 VOUT	Power output terminals	Eight parallel pins reduce current density and parasitic inductance; share load for <6A continuous operation.
21–22 VIN	Input power supply pads	Exposed thermal pads carry full input current; require direct connection to power plane for thermal and EMI performance.

Key Features

Feature	Design Value
Integrated 7mΩ MOSFET	Eliminates need for external discrete FET and driver, reducing BOM count and board area in 12V/24V hot-swap nodes.
Configurable fault recovery	AUTO pin selection enables either latched shutdown (for safety-critical lockout) or hiccup-mode retry (for transient-fault resilience).
Real-time current monitoring	IMON output delivers analog voltage proportional to load current with ±10% accuracy - supports predictive diagnostics and load profiling.
Sub-200ns short-circuit protection	Dedicated fast-turnoff circuit activates at 25A secondary limit, limiting fault energy before thermal damage occurs.
Programmable soft-start & insertion delay	Separate SS and TIMER pins allow independent control of inrush current ramp (via CSS) and hot-plug stabilization time (via CT).

Applications

Automotive Infotainment Power Distribution

ADAS Camera Module Protection

Use Scenario: Protecting head unit USB-C ports and display power rails from cable hot-insertion surges and connector shorts.

IC Role / Device Role / Timing Role: Hot-swap controller with programmable current limit and PG sequencing to prevent brownouts during peripheral enumeration.

Use Value: Enables plug-and-play connectivity without system reset; ±10% IMON accuracy supports USB PD compliance logging.

Use Scenario: Safeguarding 12V-fed camera modules against reverse-polarity miswiring and ESD-induced latch-up.

IC Role / Device Role / Timing Role: Input-side protector with damaged-MOSFET detection and under-voltage lockout to block power during cold-crank dips.

Use Value: Prevents false camera resets during engine start; 200ns response avoids sensor latch-up from transient shorts.

Instrument Cluster Backlight Driver Supply

Telematics Control Unit (TCU) Core Rail

Use Scenario: Delivering stable 12V to LED backlight drivers while suppressing inrush into large capacitive loads.

IC Role / Device Role / Timing Role: Soft-start regulated hot-swap switch with adjustable slew rate (via SS pin) and thermal foldback.

Use Value: Eliminates backlight flicker during ignition; 7mΩ R_DS(ON) ensures <100mV drop at 5A, preserving dimming resolution.

Use Scenario: Isolating TCU main SoC rail from battery transients during CAN bus activity and RF transmission bursts.

IC Role / Device Role / Timing Role: Fault-tolerant power switch with FLTB-driven MCU interrupt and IMON-based load anomaly detection.

Use Value: Enables firmware-triggered shutdown on sustained overcurrent; AEC-Q100 Grade 1 qualification ensures 15-year field reliability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS25942LMLR	4.5V–18V input, 7.2mΩ R_DS(ON), fixed 5.5A current limit, no IMON output	Lacks programmable current limit and analog current monitoring - unsuitable for diagnostic-heavy ADAS systems	Select when cost-sensitive 12V-only designs require minimal feature set and TI ecosystem support
NIS5132MN	3.3V–18V input, 12mΩ R_DS(ON), 2.5A fixed limit, no soft-start or PG output	No soft-start, no power-good flag, and higher conduction loss - limits use to low-power auxiliary rails	Choose only for non-critical 5V/3.3V subsystems where thermal margin is ample and sequencing is handled externally

Compared with TPS25942LMLR and NIS5132MN, MPQ5066GQV-AEC1-P uniquely combines AEC-Q100 Grade 1 qualification, 6–28V operation, programmable 5–15A current limit, ±10% IMON accuracy, and PG/FLTB status signaling - making it the only option qualified for high-reliability 24V automotive core power domains.

Availability

MPQ5066GQV-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and instrument cluster power distribution requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for MPQ5066GQV-AEC1-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 power management ICs for automotive, industrial, and computing markets, with design centers in the US, China, and Taiwan.

The MPQ5066 belongs to MPS's AEC-Q100-qualified hot-swap and eFuse product line, engineered specifically for robust 12V/24V automotive subsystem protection with integrated current monitoring and fault diagnostics.

FAQ

What is the maximum continuous output current rating for MPQ5066GQV-AEC1-P?

The MPQ5066GQV-AEC1-P is rated for 6A continuous output current per the datasheet absolute maximum ratings and thermal design limits on a standard 2-layer EVB. Its current limit is programmable from 5A to 15A, but sustained operation above 6A requires careful thermal management using the exposed VIN pads and PCB copper area per the layout guidelines.

How does the IMON pin provide current measurement, and what resistor value sets 100mV/A?

The IMON pin outputs a voltage proportional to load current via an internal scaling factor: V_IMON = I_LOAD × 50mV/A × (10kΩ / R_IMON). Using a 10kΩ resistor from IMON to GND yields 100mV/A (since 50mV/A × (10kΩ/10kΩ) = 50mV/A, corrected per datasheet Equation 3: I_IMON = I_POWERFET/10⁵ → V_IMON = I_POWERFET × R_IMON/10⁵; thus R_IMON = 10kΩ gives 100mV/A). A 100nF capacitor to GND is required for noise filtering.

Can MPQ5066GQV-AEC1-P operate with input voltages below 6V?

No - the recommended operating input voltage range is strictly 6V to 28V per the datasheet. Below 6V, the internal charge pump cannot fully enhance the power MOSFET, resulting in elevated R_DS(ON) and potential thermal instability. The under-voltage lockout (UVLO) falling threshold is 2.7V, but functional operation is not guaranteed below 6V due to insufficient gate drive and regulator headroom.

What is the purpose of the TIMER pin, and how is its capacitor value calculated?

The TIMER pin controls three timing functions: hot-plug insertion delay, fault timeout period, and auto-retry restart interval. A 200µA current source charges the external capacitor (C_T) until it reaches 1.23V (timeout) or 0.2V (restart). For a 100ms fault timeout, C_T = (1.23V / 200µA) ≈ 6.15µF; standard 6.8µF is commonly used. The datasheet specifies CT = 220nF for typical evaluation, yielding ~1.1ms timeout.

Does MPQ5066GQV-AEC1-P support bidirectional current flow or reverse polarity protection?

No - the MPQ5066GQV-AEC1-P is a unidirectional high-side hot-swap controller optimized for VIN-to-VOUT power flow only. It does not support reverse current blocking or reverse-polarity tolerance. External components (e.g., series Schottky diode or dedicated reverse-voltage IC) are required if reverse feed or polarity reversal must be prevented.

How is damaged-MOSFET detection implemented, and what triggers it?

During startup, the MPQ5066 monitors V_OUT relative to V_IN. If V_OUT exceeds V_IN − 1V before the MOSFET is fully enhanced, the device interprets this as a shorted pass FET. FLTB is immediately driven low, and the gate drive remains disabled. Recovery occurs only after V_OUT falls ≤ V_IN − 1V - ensuring no power is delivered until integrity is confirmed.

What is the thermal resistance (θ_JA) of MPQ5066GQV-AEC1-P on a standard 4-layer PCB?

On a JESD51-7 4-layer PCB, θ_JA is 46°C/W per the datasheet Absolute Maximum Ratings table. This value assumes 2oz copper, thermal vias under the exposed pad, and adequate copper pour on inner layers. On MPS's 2-layer EVB (EV5066-QV-00A), θ_JA improves to 30°C/W - highlighting the importance of PCB thermal design for automotive ambient temperatures up to +125°C.

MPQ5066GQV-AEC1-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MPQ

Package/Case:: 22-PowerVFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Hot Swap Controller, Monitor

Number of Channels:: 1

Internal Switch(s):: No

Applications:: -

Features:: Auto Retry, Fault Timeout, Latched Fault, Thermal Limit, UVLO

Programmable Features:: Auto Retry, Current Limit, Fault Timeout, Latched Fault, Slew Rate

Voltage - Supply:: 6V ~ 28V

Current - Output (Max):: 6A

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Current - Supply:: 1 mA

Mounting Type:: Surface Mount

Supplier Device Package:: 22-QFN (3x5)

MPQ5066GQV-AEC1-P FAQ

1.How can I place an order for MPQ5066GQV-AEC1-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ5066GQV-AEC1-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MPQ5066GQV-AEC1-P reliable?

The price and inventory of MPQ5066GQV-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ5066GQV-AEC1-P is usually 5 days.

3.What payment methods are accepted for MPQ5066GQV-AEC1-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ5066GQV-AEC1-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ5066GQV-AEC1-P?

MPQ5066GQV-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ5066GQV-AEC1-P order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MPQ5066GQV-AEC1-P?

For technical support, including MPQ5066GQV-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ5066GQV-AEC1-P requirements.

6.How does Aetrix verify that MPQ5066GQV-AEC1-P is sourced from the original manufacturer or authorized distributors?

All MPQ5066GQV-AEC1-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPQ5066GQV-AEC1-P meets industry standards.

7.What is the process for return or replacement of MPQ5066GQV-AEC1-P?

All MPQ5066GQV-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ5066GQV-AEC1-P, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MPQ5066GQV-AEC1-P part is unused and in its original packaging.

Return procedure for MPQ5066GQV-AEC1-P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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