Table of Contents

MP1482 Features, Applications, and Comparison with Popular Switching Regulators

June 06, 2025

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2A, high-efficiency step-down conversion with 4.75V-18V input.

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Overview

Designed for high-efficiency DC-DC conversion, MP1482 integrates two low RDS(on) MOSFETs and delivers up to 2A continuous load current across a wide input voltage range of 4.75V to 18V. Its current-mode control architecture ensures fast transient response and robust cycle-by-cycle current protection. A programmable soft-start function minimizes inrush current at startup, while ultra-low standby current enhances power savings in shutdown mode. Packaged in a compact 8-pin SOIC footprint, MP1482 offers a cost-effective, space-efficient solution for modern power designs.

Features

2A continuous output current capability
Wide input voltage range: 4.75V to 18V
Integrated 130mΩ high- and low-side MOSFETs
Adjustable output voltage from 0.923V to 15V
Up to 93% conversion efficiency
Programmable soft-start control
Cycle-by-cycle overcurrent protection
Input undervoltage lockout protection
Stable with low ESR ceramic capacitors
Fixed 340kHz switching frequency
Available in a compact 8-pin SOIC package

Pinout Configuration

MP1482 Pinout

Pin Number	Pin Name	Description
1	BS	High-side gate drive boost input. Connect a capacitor from SW to BS.
2	IN	Power input (4.75V to 18V). Supplies power to the IC and converter switches.
3	SW	Switching node that connects to the inductor and supplies power to the output.
4	GND	Ground pin.
5	FB	Feedback input. Regulates the output voltage via resistive divider.
6	COMP	Compensation node for the control loop.
7	EN	Enable input. High to enable, low to disable the regulator.
8	SS	Soft-start control pin. Sets the soft-start duration via external capacitor.

Applications

Highly versatile in design, MP1482 serves a broad range of demanding electronic applications. In distributed power systems, it provides compact and efficient voltage regulation for multiple subsystems, ensuring consistent and reliable power delivery.

Within networking equipment such as routers, switches, and access points, MP1482 excels in maintaining stable power, thanks to its fast transient response and superior conversion efficiency—both critical for high-speed data environments.

When used to power FPGA, DSP, and ASIC circuits, MP1482 delivers precise voltage control and minimal output ripple, supporting the stable operation of sensitive digital components in advanced processing systems.

Energy-efficient designs, including green electronics and modern appliances, benefit from MP1482’s high conversion efficiency and ultra-low standby current. Additionally, its compliance with RoHS directives aligns perfectly with today’s eco-friendly manufacturing standards.

For notebook computers, MP1482 plays a key role in optimizing voltage conversion for I/O interfaces, storage subsystems, and peripheral circuits. Its space-saving SOIC-8 package is particularly advantageous in portable and slim-profile devices where board space is at a premium.

Typical Application Circuit

MP1482 Typical 3.3V Application Circuit

Below is a representative application circuit of the MP1482 configured for a 3.3V output using a 22µF/6.3V ceramic capacitor. The design illustrates a common implementation scenario where efficiency and simplicity are both prioritized. The MP1482 can easily adapt to different output voltages and load conditions by adjusting external components.

Package

MP1482 TOP VIEW

MP1482 RECOMMENDED LAND PATTERN

The MP1482 is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The SOIC-8 package measures approximately 5.0mm x 6.2mm x 1.75mm, providing a compact footprint that fits easily into space-constrained PCB designs. This standard leaded package simplifies assembly and enhances thermal performance through effective heat dissipation.

Manufacturer

The MP1482 is developed and manufactured by Monolithic Power Systems (MPS), a leading provider of high-performance analog and mixed-signal ICs. MPS is renowned for its expertise in power management solutions, and the MP1482 reflects the company’s commitment to innovation and quality in analog IC technology.

MP1482 vs Other Switching Regulators

Features	MP1482	MP1542	MP1584	MP2259	MP2359
Current - Output	2A	2A (Switch)	3A	1A	1.2A
Frequency - Switching	340kHz	1.3MHz	100kHz ~ 1.5MHz	1.4MHz	1.4MHz
Function	Step-Down	Step-Up	Step-Down	Step-Down	Step-Down
Topology	Buck	Boost	Buck	Buck	Buck
Synchronous Rectifier	Yes	No	No	No	No
Voltage - Input (Min)	4.75V	2.5V	4.5V	4.5V	4.5V
Voltage - Input (Max)	18V	22V	28V	16V	24V
Voltage - Output (Min/Fixed)	0.923V	3V	0.8V	0.81V	0.81V
Voltage - Output (Max)	15V	22V	25V	14V	15V
Number of Outputs	1	1	1	1	1
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-20°C ~ 85°C (TA)	-40°C ~ 85°C	-40°C ~ 85°C (TA)
Package / Case	8-SOIC	8-MSOP	8-SOIC Exposed Pad	6-TSOT-23	TSOT-23-6

MP1482 Datasheet

MP1482 Datasheet Download

Conclusion

With its flexible feature set and reliable performance, MP1482 stands out as an excellent choice for a wide spectrum of power applications. From networking systems and FPGA-based designs to green electronics and portable devices, this compact synchronous buck converter consistently delivers high efficiency, precise voltage regulation, and dependable protection. For engineers and designers seeking a proven DC-DC solution that balances performance, versatility, and ease of integration, MP1482 represents a highly competitive option that meets the demands of today’s advanced electronic systems.

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FAQs

+ What is the MP1482 used for?

The MP1482 is commonly used in networking systems, FPGA power supplies, green electronics, and notebook computers for efficient DC-DC conversion.

+ What is the input voltage range of MP1482?

The MP1482 supports an input voltage range of 4.75V to 18V.

+ How does MP1482 compare with MP1584?

MP1482 offers lower EMI with a fixed 340kHz frequency and synchronous rectification, while MP1584 supports up to 3A output with higher frequency flexibility.

+ Does MP1482 support synchronous rectification?

Yes, MP1482 features integrated low-RDS(on) MOSFETs with synchronous rectification for higher efficiency.

+ What is the output voltage range of MP1482?

The MP1482 provides an adjustable output voltage from 0.923V to 15V.