MP4558DN-LF

Description：IC REG BUCK ADJ 1A 8SOIC
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tube

SKU:b9c884747cae Category: Voltage Regulators - DC DC Switching Regulators Brand: Monolithic Power Systems Inc.

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Product introduction

MP4558DN-LF is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Monolithic Power Systems Inc.. Its product description is IC REG BUCK ADJ 1A 8SOIC. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for MP4558DN-LF

Description：IC REG BUCK ADJ 1A 8SOIC
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tube
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：1A
Frequency - Switching：Up to 2MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package：8-SOIC-EP
Grade：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for MP4558DN-LF

MP4558DN-LF

Voltage Regulators - DC DC Switching Regulators Overview

The MP4558DN-LF-Z is a non-synchronous buck converter from Monolithic Power Systems. It supports an input voltage range of 3.8 V to 55 V and delivers up to 1 A output current. The adjustable output voltage spans from 800 mV to 52 V. Operating at a fixed switching frequency of 1 MHz, the device features a quiescent current of 140 uA. It is housed in an SOIC-EP-8 package with exposed pad for thermal management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrates high-side power MOSFET for compact design
Supports ceramic capacitors for stable operation
Includes internal soft-start functionality
Provides overcurrent and overtemperature protection

Voltage Regulators - DC DC Switching Regulators Applications

Automotive systems
Industrial power supplies
Battery-powered applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix (e.g., -LF-Z) against official MPS documentation to confirm lead-free status and packaging type. Confirm that the specific variant matches the required pinout and thermal characteristics for your PCB layout. Ensure compliance with RoHS directives if applicable to your region.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 55 V is required with moderate current demands. The 1 MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the SOIC-EP-8 package for ease of assembly while maintaining adequate thermal performance for 1 A loads.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MP4558 series of step-down converters designed for robust performance in demanding environments. It serves as a cost-effective solution for general-purpose voltage regulation where synchronous rectification is not strictly necessary. The family emphasizes reliability and simplicity in circuit design.