
The MP4558 is a high-frequency, step-down switching regulator with an integrated internal high-side high-voltage power MOSFET. It provides up to a 1A output with current-mode control for fast loop response and easy compensation. The wide 3.8V-to-55V input range accommodates a variety of step-down applications, including automotive input. A 12µA shutdown-mode supply current makes it suitable for battery-powered applications. A scaled-down switching frequency in light-load conditions provides high power-conversion efficiency over a wide load range while reducing switching and gate driver losses. The frequency fold-back prevents inductor current runaway during startup and thermal shutdown provides reliable, fault-tolerant operation. By switching at 2MHz, the MP4558 can prevent EMI (electromagnetic interference) noise problems, such as those found in AM radio and ADSL applications. The MP4558 is available in an SOIC8E and a 10-pin 3mm x 3mm QFN package.
YG GROUP (YUGUANG INTERNATIONAL(HK)CO.,LTD) supports reliable sourcing through quality controls and compliance documentation. Please confirm product requirements, applicable certifications and supporting documents before ordering.
MP4558DQ-LF-P is an authentic electronic component manufactured by Monolithic Power Systems, categorized under Power Management ICs. It is supplied in the standard manufacturer-specified package footprint, providing industry-standard mechanical dimensions and terminal configurations for board-level assembly. Full pinout configurations, physical footprint drawings, and rated operating tolerances are documented in the official MP4558DQ-LF-P datasheet above.
Electronic component spot-market pricing for MP4558DQ-LF-P fluctuates based on real-time global availability, production date codes, minimum order quantities (MOQ), and packaging formats (e.g., Reel, Tube, Tray). Using an RFQ ensures you receive accurate, real-time volume pricing tied to verified, traceable inventory rather than stale catalog estimates.
Lead times for MP4558DQ-LF-P depend on whether stock is dispatched from our central hub or regional franchise partners. Ready-to-ship inventory typically leaves the warehouse within 1–3 business days following quality inspection, while factory-direct or back-ordered allocations are confirmed with an estimated ship date upon RFQ reply.
Loading articles…
Loading articles…

Need MK10DN512VLK10 for an existing board? Review the 80-pin package, firmware target and related K10 options. Request a quote for the approved code.
Read more →
Reordering STM1831L24WY6F? Check the 2.4 V threshold, sense input and delay circuit before accepting a substitute. Request an exact-code quote.
Read more →
Need LIS2DH12TR for low-power sensing? Review FIFO service limits, system power and two ST alternatives. Request a quote for your project.
Read more →
Cost an STKNX node, not just the IC. Review the shared bus-power budget, supporting BOM and a KNX comparison. Request a quote for approved parts.
Read more →Loading related products…
| Picture | Part Number | Manufacturer | PDF / RoHS | Stock | Action |
|---|---|---|---|---|---|
![]() | Monolithic Power Systems | 4,170 | |||
![]() | Monolithic Power Systems | -- | 2,580 | ||
![]() | Monolithic Power Systems | 8,890 | |||
![]() | Monolithic Power Systems | -- | 1,430 | ||
![]() | Monolithic Power Systems | -- | 8,470 | ||
![]() | Monolithic Power Systems | -- | 8,280 | ||
![]() | Monolithic Power Systems | -- | 4,650 | ||
![]() | Monolithic Power Systems | -- | 7,270 | ||
![]() | Monolithic Power Systems | 7,710 | |||
![]() | Monolithic Power Systems | -- | 4,210 |