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

Monolithic Power Systems Inc. MP2380DN-LF-P

Name: MP2380DN-LF-P
Brand: Monolithic Power Systems Inc.
SKU: MP2380DN-LF-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP2380DN-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:: MP2380DN-LF-P.pdf

Description:: IC REG BUCK ADJ 5A 8SOIC

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Product details

Overview

MP2380DN-LF-P from Monolithic Power Systems is a monolithic 5A, 21V input, 600kHz fixed-frequency step-down DC/DC converter with integrated high-side MOSFET (45mΩ R_DS(ON)), power-good indicator, and cycle-by-cycle overcurrent protection. It delivers stable 3.3V@5A output in distributed power systems and battery chargers using only standard external components.

For engineers reviewing the MP2380DN-LF-P datasheet, MP2380DN-LF-P pinout, MP2380DN-LF-P application, or MP2380DN-LF-P equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and electrical specifications, and real-world design guidance for high-current buck conversion at up to 21V input.

Technical Context

The MP2380DN-LF-P operates in peak current-mode control with a fixed 600kHz oscillator, supporting synchronization up to 1.5MHz via the EN/SYNC pin. Its internal error amplifier compares FB voltage against a 0.808V reference and drives COMP to regulate duty cycle.

It integrates a thermally enhanced SOIC-8E package with exposed pad, featuring bootstrap gate drive (BST pin), internal 5V bias regulator (VCC), and hiccup-mode protection triggered when FB falls below 0.74V - enabling robust short-circuit recovery without external circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5V to 21V - supports wide industrial and battery-derived supplies including 12V and 19V rails.
Continuous Output Current	5A - enables single-chip regulation for mid-power applications like USB PD adapters or FPGA core supplies.
Switch R_DS(ON)	45mΩ (typ.) - reduces conduction loss and thermal stress at full load, improving efficiency above 85% at 12V→3.3V/5A.
Feedback Reference Voltage	0.808V (typ.) - sets output voltage via external resistor divider; enables precise 0.8V–5V adjustable regulation.
Power Good Threshold	0.74V rising - asserts open-drain PG low if output drops >10% below nominal, enabling system-level fault signaling.
Thermal Shutdown	150°C - protects die during overload or poor PCB thermal design; auto-recovery at ~140°C ensures graceful restart.
UVLO Threshold	4.1V rising / 3.22V falling - prevents erratic startup or operation below minimum bias voltage for internal regulators.

Pinout & Package

The MP2380DN-LF-P is housed in a thermally enhanced 8-pin SOIC package with exposed pad (SOIC8E), optimized for PCB heat dissipation via soldered thermal pad connection to internal ground plane.

Pin/Terminal	Circuit Role	Design Meaning
1 SW	Switch Node	High-side MOSFET drain output; connects to inductor and Schottky diode anode - carries high di/dt switching current.
2 BST	Bootstrap Supply	Provides floating gate drive voltage for high-side MOSFET; requires 0.1µF ceramic capacitor between BST and SW.
3 VCC	Bias Regulator Output	Internal 5V supply for control circuitry; must be decoupled with ≥1µF ceramic capacitor to GND.
4 GND	Power Ground	Main return path for switch current and feedback reference; layout critical to avoid noise coupling into FB.
5 FB	Feedback Input	Senses output voltage via resistor divider; internal 0.808V reference enables accurate output regulation.
6 PG	Power Good Indicator	Open-drain output pulled low when FB < 0.74V; requires external 100kΩ pull-up to VCC or VOUT for status monitoring.
7 EN/SYNC	Enable & Sync Input	Active-high enable; also accepts external 300kHz–1.5MHz clock for frequency synchronization to reduce EMI.
8 IN	Main Input Supply	Accepts 4.5V–21V unregulated input; requires local 22µF ceramic input capacitor to suppress high-frequency ripple.

Key Features

Feature	Design Value
Integrated High-Side MOSFET	45mΩ R_DS(ON) enables compact 5A buck design without external switch or driver, reducing BOM count and layout complexity.
Power-Good Indicator	Dedicated open-drain PG pin with 0.74V threshold provides reliable system-level power sequencing and fault detection.
Current-Mode Control	Enables fast transient response and simplified loop compensation using only one external RC network on COMP pin.
Thermal Enhancement	SOIC8E package with exposed pad achieves θ_JA = 50°C/W - supports 5A continuous operation with minimal heatsinking on 4-layer PCB.
Hiccup-Mode Protection	Enters periodic restart after sustained overcurrent or short-circuit, limiting average power dissipation and preventing thermal runaway.

Applications

Distributed Power System

Battery Charger

Use Scenario: Point-of-load regulation in telecom or server backplanes where 12V or 19V intermediate bus supplies multiple 3.3V/5V domains.

IC Role / Device Role / Timing Role: Primary non-synchronous buck regulator delivering 5A at fixed 600kHz switching frequency with cycle-by-cycle current limiting.

Use Value: Eliminates need for external MOSFET and driver; 85%+ efficiency at full load reduces thermal load on dense PCBs.

Use Scenario: Constant-current/constant-voltage stage in Li-ion battery charging circuits powered from 12V wall adapters or automotive sources.

IC Role / Device Role / Timing Role: Pre-regulator stepping down variable input to stable 4.2V or 8.4V for linear charger ICs, with PG signaling charge completion.

Use Value: Built-in UVLO and thermal shutdown ensure safe operation during abnormal battery conditions or ambient temperature extremes.

Pre-Regulator for LDOs

FPGA Core Supply

Use Scenario: Efficient intermediate regulation feeding low-noise LDOs that require tight voltage tolerance and low ripple for analog subsystems.

IC Role / Device Role / Timing Role: Fixed-frequency buck converter with stable 0.808V reference and low ESR ceramic capacitor compatibility.

Use Value: Reduces LDO dropout voltage and power loss; 30mV output ripple (typ.) simplifies downstream filtering requirements.

Use Scenario: Core voltage supply for mid-range FPGAs requiring 1.2V @ 4–5A with fast load transient response during logic reconfiguration.

IC Role / Device Role / Timing Role: Current-mode buck controller with 100ns minimum on-time and 6.5A current limit enabling rapid current delivery.

Use Value: Fast transient response minimizes undershoot during 3A–5A load steps; PG signal validates rail stability before configuration start.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP2384DN-LF-Z	Same SOIC8E package, but rated for 4A output and 30mΩ R_DS(ON); lower current limit (5.5A) and no PG pin.	Lacks power-good signaling; suitable only where system-level monitoring is handled externally.	Select when 4A output suffices and PG functionality is unnecessary - offers marginally better efficiency at light loads.
TPS54560BQPWPRQ1	Automotive-grade 60V-input buck with 5A rating, but larger HTSSOP-20 package; includes soft-start adjust and precision enable threshold.	Qualified per AEC-Q100; supports wider VIN range and higher reliability requirements for vehicle ECUs.	Choose for automotive applications requiring extended temperature range (–40°C to +125°C) and qualification documentation.

Compared with MP2384DN-LF-Z, MP2380DN-LF-P adds PG signaling and 5A capability at identical footprint; versus TPS54560BQPWPRQ1, it trades automotive qualification for smaller size and lower cost in industrial designs.

Availability

MP2380DN-LF-P is available at Aetrix Electronics and suitable for distributed power systems, battery chargers, and FPGA core supplies requiring stable component supply, RoHS-compliant packaging, and consistent thermal performance across production volumes.

Supply support for MP2380DN-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 mixed-signal ICs for power management, motion control, and automotive applications.

The MP2380 belongs to MPS's high-current DC/DC converter product line, designed specifically for space-constrained industrial and computing applications needing efficient, integrated 5A buck regulation without external MOSFETs.

FAQ

What is the maximum recommended output current for MP2380DN-LF-P under continuous operation?

The MP2380DN-LF-P is rated for 5A continuous output current across its full operating temperature range (–40°C to +85°C), provided the PCB uses adequate copper area on the exposed pad and maintains θ_JA ≤ 50°C/W. Derating is required above 70°C ambient or with insufficient thermal vias.

Can MP2380DN-LF-P synchronize to an external clock, and what is the supported frequency range?

Yes - the EN/SYNC pin supports synchronization from 300kHz to 1.5MHz. The internal oscillator locks to the rising edge of the external clock signal, enabling EMI reduction through frequency dithering or alignment with system clocks in multi-rail designs.

Does MP2380DN-LF-P require an external bootstrap diode for proper operation?

No - the internal bootstrap charging circuit operates reliably without external diodes for most configurations. An external Schottky diode (e.g., IN4148) is optional only when V_OUT = 3.3V or 5V and duty cycle exceeds 65%, to improve light-load efficiency by reducing BST capacitor discharge losses.

How does the power-good (PG) function behave during startup and fault conditions?

PG remains high-impedance until V_OUT reaches 90% of target (i.e., FB ≥ 0.74V); it then pulls low only if V_OUT drops below that threshold due to overload, short circuit, or input brownout. During hiccup mode, PG toggles low during each failed startup attempt.

What is the minimum inductor value recommended for MP2380DN-LF-P at 5A output?

A 4.7µH inductor is used in the typical application circuit and validated for 5A operation. Inductor selection must ensure peak current rating ≥ 6.5A (30% ripple on 5A DC) and DCR < 15mΩ to maintain >85% efficiency at full load with 12V input.

Is the MP2380DN-LF-P RoHS-compliant and lead-free?

Yes - the "-LF" suffix denotes lead-free, RoHS-compliant packaging. The device meets JEDEC J-STD-020 moisture sensitivity level 3 and is qualified for reflow soldering per IPC/JEDEC J-STD-020 standards.

What thermal considerations apply to the exposed pad on the SOIC8E package?

The exposed pad must be soldered to a solid copper thermal pad connected to ≥4 thermal vias (0.3mm diameter) to an inner ground plane. Failure to do so increases θ_JA beyond 50°C/W, risking thermal shutdown at >3.5A continuous load in still-air conditions.

MP2380DN-LF-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MP

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

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 4.5V

Voltage - Input (Max):: 21V

Voltage - Output (Min/Fixed):: 0.808V

Voltage - Output (Max):: 18.9V

Current - Output:: 5A

Frequency - Switching:: 600kHz

Synchronous Rectifier:: No

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC-EP

MP2380DN-LF-P FAQ

1.How can I place an order for MP2380DN-LF-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP2380DN-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 MP2380DN-LF-P reliable?

The price and inventory of MP2380DN-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 MP2380DN-LF-P is usually 5 days.

3.What payment methods are accepted for MP2380DN-LF-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2380DN-LF-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP2380DN-LF-P?

MP2380DN-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP2380DN-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 MP2380DN-LF-P?

For technical support, including MP2380DN-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2380DN-LF-P requirements.

6.How does Aetrix verify that MP2380DN-LF-P is sourced from the original manufacturer or authorized distributors?

All MP2380DN-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 MP2380DN-LF-P meets industry standards.

7.What is the process for return or replacement of MP2380DN-LF-P?

All MP2380DN-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2380DN-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 MP2380DN-LF-P part is unused and in its original packaging.

Return procedure for MP2380DN-LF-P:

1.Submit a request within 90 days.

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

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