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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Monolithic Power Systems Inc. MPQ4560DN-LF-P

Name: MPQ4560DN-LF-P
Brand: Monolithic Power Systems Inc.
SKU: MPQ4560DN-LF-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ4560DN-LF-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Datasheet:: MPQ4560DN-LF-P.pdf

Description:: IC REG BUCK ADJ 2A 8SOICE

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Product details

Overview

MPQ4560DN-LF-P from Monolithic Power Systems is an industrial-grade, asynchronous step-down DC/DC converter with integrated 250mΩ high-side MOSFET, delivering up to 2A output current across a 3.8V–55V input range and adjustable 0.8V–52V output. It operates at up to 2MHz switching frequency, features current-mode control for fast transient response, and supports AEC-Q100 qualification in automotive variants. It is used in high-voltage industrial power rails where compact size and wide VIN tolerance are critical.

For engineers reviewing the MPQ4560DN-LF-P datasheet, MPQ4560DN-LF-P pinout, MPQ4560DN-LF-P application, or MPQ4560DN-LF-P equivalent, key selection criteria include its 2MHz programmable frequency, 140μA quiescent current in active mode, thermal shutdown at 150°C, 12μA shutdown supply current, and compatibility with ceramic-output-capacitor stability - all validated for automotive-temperature-range operation (–40°C to +125°C).

Technical Context

The MPQ4560DN-LF-P implements fixed-frequency peak-current-mode control with internal error amplifier (400 V/V gain, 120 µA/V transconductance), programmable oscillator (set via external resistor on FREQ pin), and cycle-by-cycle current limiting (2.6–4.5A typical). Its asynchronous architecture relies on an external Schottky diode for freewheeling, eliminating synchronous rectifier complexity while maintaining efficiency up to 95%.

It integrates bootstrap charging circuitry with dedicated UVLO (2.2V rising threshold, 150mV hysteresis) and internal soft-start (0.19–0.5ms ramp), plus under-voltage lockout (3.0V rising, 2.6V falling) and thermal shutdown (150°C trip, 20°C hysteresis). The COMP pin serves as GM amplifier output for loop compensation, supporting pole-zero placement for stable operation across diverse output capacitor ESR and capacitance values.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.8V to 55V - supports direct connection to 12V/24V/48V industrial and automotive battery rails without pre-regulation.
Output Current	Up to 2A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in distributed systems.
Switching Frequency	Programmable up to 2MHz - enables use of small inductors (e.g., 4.7µH) and avoids AM radio/ADSL interference bands.
Quiescent Current	140µA at no load - extends battery life in always-on monitoring or telematics modules.
Feedback Reference	0.797V ±2.5% - sets output accuracy; allows precise 3.3V/5V/12V regulation using standard resistor dividers.
High-Side R_DS(on)	250mΩ max at 25°C - limits conduction loss at 2A (≤1W dissipation), enabling SOIC8E and QFN10 thermal performance up to +125°C.
Shutdown Current	12µA - ensures minimal drain during system sleep modes in battery-powered applications.
Operating Temp Range	–40°C to +125°C - qualified for industrial and AEC-Q100-compliant automotive environments (SOIC8E variant).

Pinout & Package

MPQ4560DN-LF-P is supplied in SOIC8E package (8-pin, exposed pad not present), with pin functions identical to the QFN10 variant except for pin count reduction and layout adaptation. Thermal performance relies on PCB copper area under pins 4 (GND) and 5 (GND), requiring solid ground plane connection.

Pin	Circuit Role	Design Meaning
1	VIN	Main input supply rail; requires local 4.7µF ceramic decoupling to suppress switching noise.
2	EN	Enable control with 1.55V rising threshold; floating enables device via internal 1µA pull-up.
3	COMP	Error amplifier output; connects to RC network for loop compensation and stability tuning.
4	FB	Resistive divider input referencing 0.797V internal reference; sets output voltage precisely.
5	GND	Analog/digital ground return; must tie directly to low-impedance ground plane near output capacitor.
6	FREQ	Resistor-to-ground sets switching frequency (e.g., 95kΩ → 1MHz); enables EMI optimization.
7	BST	Bootstrap supply for high-side driver; requires 0.1µF capacitor to SW for gate drive integrity.
8	SW	Switch node; connects to inductor and Schottky diode cathode; high dV/dt demands tight layout.

Key Features

Feature	Design Value
Ceramic capacitor stable	Supports low-ESR ceramic output capacitors without phase-margin degradation - simplifies filtering and reduces BOM count.
Internal soft-start	0.19–0.5ms controlled ramp prevents output overshoot and inrush current during startup or fault recovery.
Frequency foldback	Reduces switching frequency during short-circuit events to limit peak inductor current and prevent thermal runaway.
Thermal shutdown	150°C trip with 20°C hysteresis provides autonomous fault protection without external circuitry.
Programmable 2MHz oscillator	External resistor on FREQ pin enables precise EMI management and inductor size optimization across designs.
AEC-Q100 qualified option	MPQ4560DN-AEC1 variant meets stress-test requirements for automotive electronics (not applicable to -LF-P suffix).

Applications

Industrial PLC Power Rails

Automotive Body Control Modules

Use Scenario: Providing regulated 5V/3.3V power to I/O modules and CAN transceivers in programmable logic controllers operating from 24V or 48V DC bus.

IC Role / Device Role / Timing Role: Primary step-down regulator with current-mode control ensuring fast load transient response to solenoid actuation pulses.

Use Value: Wide 3.8V–55V input range eliminates need for upstream pre-regulator; 2MHz operation allows compact 4.7µH inductor and <1cm² solution size.

Use Scenario: Supplying 3.3V to microcontroller and sensor subsystems in body control units powered by 12V vehicle battery with cold-crank dips down to 6V.

IC Role / Device Role / Timing Role: High-voltage buck converter with UVLO (3.0V) and thermal shutdown, managing power during engine start and cabin temperature extremes.

Use Value: –40°C to +125°C operation and AEC-Q100-qualified variants ensure reliability; 140µA quiescent current minimizes parasitic drain in parked state.

Distributed Telecom Power

Battery-Powered Telematics Units

Use Scenario: Generating isolated 12V/5V rails from 48V backplane in remote radio head enclosures with strict EMI limits.

IC Role / Device Role / Timing Role: EMI-conscious 2MHz buck converter avoiding AM band interference; uses ceramic input/output caps for low ripple.

Use Value: Programmable frequency and frequency foldback enable compliance with EN55022 Class B; 95% peak efficiency reduces heatsink requirements.

Use Scenario: Powering GPS/GSM modules and inertial sensors in asset trackers running from single-cell Li-ion (3.0–4.2V) or dual-cell packs (6–8.4V).

IC Role / Device Role / Timing Role: Wide-input buck converter with 12µA shutdown current and soft-start, enabling multi-year battery life in periodic-reporting mode.

Use Value: 3.8V minimum VIN accommodates Li-ion discharge curve; internal MOSFET eliminates external component count and layout sensitivity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPQ4572DN-LF-P	Successor with improved 3.3V–60V input, 3A output, lower R_DS(on) (160mΩ), and enhanced light-load efficiency.	Direct drop-in replacement with higher current capability and extended VIN range; recommended for new designs per MPS notice.	Select when upgrading legacy MPQ4560 designs or requiring >2A output or >55V input margin.
LM5164QPWPRQ1	Texas Instruments' 1A, 65V, 1.5MHz buck with integrated FET, but lower current rating and no AEC-Q100 SOIC8E variant.	Lacks 2A capability and industrial-temp SOIC8E packaging; suitable only for lower-power automotive sub-systems.	Consider only if 1A output suffices and TI's WEBENCH support is preferred over MPS design tools.

Compared with MPQ4560DN-LF-P, MPQ4572DN-LF-P offers higher current, wider input, and better efficiency - making it the technically superior choice for new designs - while LM5164QPWPRQ1 trades current capacity and packaging for TI ecosystem integration, limiting its applicability in 2A industrial or automotive roles.

Availability

MPQ4560DN-LF-P is available at Aetrix Electronics and suitable for industrial PLC power rails, automotive body control modules, distributed telecom power supplies, and battery-powered telematics units requiring stable component supply and long-term lifecycle support.

Supply support for MPQ4560DN-LF-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 core expertise in DC/DC conversion, LED drivers, and motor control solutions.

The MPQ4560 belongs to MPS's industrial-grade buck converter product line, designed specifically for high-input-voltage applications in harsh environments where reliability, wide temperature operation, and compact footprint are essential.

FAQ

What is the maximum recommended output current for MPQ4560DN-LF-P in SOIC8E package at 85°C ambient?

The SOIC8E package has θ_JA = 50°C/W. At 85°C ambient and 125°C max junction temperature, allowable power dissipation is (125 − 85)/50 = 0.8W. With 250mΩ R_DS(on), this corresponds to √(0.8 / 0.25) ≈ 1.8A continuous output current - derated from the 2A headline spec to ensure thermal safety without forced airflow.

Can MPQ4560DN-LF-P operate with input voltage below 3.8V?

No - the absolute minimum operating input voltage is 3.8V per datasheet specifications. Below this, internal regulation fails and UVLO remains active. The 2.7–3.3V UVLO threshold applies only during startup; sustained operation requires ≥3.8V. For sub-3.8V inputs, consider MPQ4572 (3.3V min) or alternative architectures.

Is the MPQ4560DN-LF-P pin-compatible with MPQ4560DQ (QFN10) version?

No - the SOIC8E (MPQ4560DN) and QFN10 (MPQ4560DQ) packages have different pin counts and layouts. While functional pin mapping is preserved (e.g., FB, EN, COMP), physical pin assignments differ significantly; PCB redesign is required for package interchange.

Why does the datasheet state "NOT RECOMMENDED FOR NEW DESIGNS"?

MPS explicitly designates MPQ4560 as legacy due to the release of MPQ4572 - its pin-compatible successor with higher current (3A), wider input (3.3V–60V), lower R_DS(on), and improved light-load efficiency. MPQ4560 remains available for existing designs but lacks roadmap support for future revisions or enhancements.

Does MPQ4560DN-LF-P require an external Schottky diode, and what are key selection criteria?

Yes - as an asynchronous buck, it requires an external Schottky diode. Key criteria: reverse voltage rating >55V (e.g., 100V), average forward current >2A, low forward voltage (<0.5V @2A), and fast recovery. Recommended parts include B380-13-F (80V/3A) or CMSH3-100MA (100V/3A), mounted close to SW and GND pins.

How is switching frequency set, and what is the resistor value for 2MHz operation?

Frequency is set by resistor R_FREQ from FREQ pin to GND. Per datasheet formula R_FREQ(kΩ) = 100000/f_SW(kHz) − 5. For 2MHz (2000kHz), R_FREQ = 100000/2000 − 5 = 45kΩ. A 45.3kΩ 1% resistor yields nominal 2MHz operation, confirmed by typical characterization data.

What is the purpose of the BST pin, and how should the bootstrap capacitor be selected?

BST supplies gate drive voltage to the internal high-side MOSFET driver. A 0.1µF X7R ceramic capacitor must connect between BST and SW pins. It charges during SW low-time via internal PMOS; capacitor must withstand ≥5V and exhibit low ESL to maintain gate drive integrity at 2MHz. Placement adjacent to BST/SW pins is mandatory.

MPQ4560DN-LF-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MPQ

Package/Case:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 3.8V

Voltage - Input (Max):: 55V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 52V

Current - Output:: 2A

Frequency - Switching:: Up to 2MHz

Synchronous Rectifier:: No

Operating Temperature:: 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOICE

MPQ4560DN-LF-P FAQ

1.How can I place an order for MPQ4560DN-LF-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ4560DN-LF-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 MPQ4560DN-LF-P reliable?

The price and inventory of MPQ4560DN-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4560DN-LF-P is usually 5 days.

3.What payment methods are accepted for MPQ4560DN-LF-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4560DN-LF-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ4560DN-LF-P?

MPQ4560DN-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ4560DN-LF-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 MPQ4560DN-LF-P?

For technical support, including MPQ4560DN-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4560DN-LF-P requirements.

6.How does Aetrix verify that MPQ4560DN-LF-P is sourced from the original manufacturer or authorized distributors?

All MPQ4560DN-LF-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 MPQ4560DN-LF-P meets industry standards.

7.What is the process for return or replacement of MPQ4560DN-LF-P?

All MPQ4560DN-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4560DN-LF-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 MPQ4560DN-LF-P part is unused and in its original packaging.

Return procedure for MPQ4560DN-LF-P:

1.Submit a request within 90 days.

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

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