MP4054GJ-Z Equivalent & Substitute Parts

Part Overview

The MP4054GJ-Z is an LED Driver IC manufactured by Monolithic Power Systems Inc., designed for AC DC offline switching applications with analog dimming capability. This device operates as a 1-output offline switcher supporting Flyback, Step-Down (Buck), and Step-Up (Boost) topologies. The part is classified as Not For New Designs, making identification of equivalent substitute components essential for ongoing production support and legacy system maintenance.

Substiute Parts

MP4054GJ-Z

Monolithic Power Systems Inc.In Stock: 62278MP4054GJ-Z Datasheet

Current PartRFQ

CPC9909NTR

IXYS Integrated Circuits DivisionIn Stock: 1848CPC9909NTR Datasheet

MFR RecommendedRFQ

LNK417LG

Power IntegrationsIn Stock: 19801LNK417LG Datasheet

MFR RecommendedRFQ

LYT3326D-TL

Power IntegrationsIn Stock: 928LYT3326D-TL Datasheet

MFR RecommendedRFQ

UCC28811DR

Texas InstrumentsIn Stock: 35727UCC28811DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP4054GJ-Z is determined by the following critical parameters: AC DC offline switcher topology, single output configuration, analog or PWM dimming capability, surface mount packaging compatibility, and operating temperature range. The substitute parts listed below maintain functional equivalence within these constraints while accommodating variations in supply voltage range, package form factor, and dimming methodology.

The four qualified substitute parts are grouped as follows:

CPC9909NTR – Maintains AC DC offline switcher topology with Step-Down/Step-Up capability and PWM dimming. Operates at 8V to 550V supply range in 8-SOIC package.

LNK417LG – Flyback topology AC DC offline switcher with integrated internal switch, PWM dimming, and 1.77A output current. Operates at 36V to 725V supply range in eSIP-7F through-hole package.

LYT3326D-TL – Supports Flyback, Step-Down, and Step-Up topologies with Triac dimming for AC line input (85VAC to 132VAC). Operates in 16-SOIC package with internal switch.

UCC28811DR – AC DC offline switcher supporting Flyback, Step-Down, and Step-Up topologies with Triac dimming. Operates up to 18V supply in 8-SOIC package.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts maintain ROHS3 or RoHS compliance and REACH unaffected status, meeting environmental regulatory requirements equivalent to the MP4054GJ-Z.

CPC9909NTR is suitable for applications requiring PWM dimming and extended supply voltage range up to 550V. The 8-SOIC package provides surface mount compatibility. Product status is Active, supporting long-term availability.

LNK417LG offers the highest supply voltage capability (725V maximum) and includes an integrated internal switch, reducing external component count. The eSIP-7F through-hole package requires PCB redesign if surface mount is mandatory. Product status is Active with extended operating temperature range to 150°C.

LYT3326D-TL is optimized for AC line input applications (85VAC to 132VAC) with Triac dimming support. The 16-SOIC package accommodates higher pin count. Product status is Active. Moisture sensitivity level is MSL 3, requiring controlled storage conditions.

UCC28811DR provides Triac dimming capability in a compact 8-SOIC surface mount package. Supply voltage is limited to 18V maximum. Product status is Active with MSL 1 (unlimited) moisture sensitivity.

Frequently Asked Questions (FAQ)

Q: Can CPC9909NTR directly replace MP4054GJ-Z in existing designs?

A: CPC9909NTR maintains AC DC offline switcher topology and single output configuration. However, dimming changes from Analog to PWM, and package changes from TSOT-23-8 to 8-SOIC. PCB layout modification is required. Supply voltage range differs (8V to 550V vs. 12V to 28V).

Q: What is the primary advantage of LNK417LG as a substitute?

A: LNK417LG includes an integrated internal switch and supports the highest supply voltage range (36V to 725V). Operating temperature extends to 150°C. The trade-off is through-hole eSIP-7F packaging, which requires PCB redesign from surface mount.

Q: Is LYT3326D-TL suitable for low-voltage DC applications?

A: No. LYT3326D-TL is designed for AC line input (85VAC to 132VAC) with Triac dimming. It is not compatible with DC supply applications. This part is optimized for lighting applications with AC mains dimming control.

Q: What packaging considerations apply when selecting a substitute?

A: MP4054GJ-Z uses TSOT-23-8 surface mount. CPC9909NTR and UCC28811DR use 8-SOIC surface mount (compatible footprint family). LNK417LG uses eSIP-7F through-hole (requires PCB redesign). LYT3326D-TL uses 16-SOIC surface mount (larger footprint). Verify PCB layout compatibility before selection.

Q: Are all substitutes RoHS compliant?

A: Yes. All four substitute parts are RoHS or ROHS3 compliant and REACH unaffected, matching the environmental compliance of MP4054GJ-Z.

Q: Which substitute has the longest operating temperature range?

A: Both LNK417LG and LYT3326D-TL support -40°C to 150°C (TJ), exceeding MP4054GJ-Z (-40°C to 125°C). CPC9909NTR and UCC28811DR operate to 85°C and 105°C respectively.

Q: Can dimming type be changed from Analog to PWM or Triac?

A: Dimming type change requires circuit redesign. Analog dimming (MP4054GJ-Z) uses voltage control. PWM dimming (CPC9909NTR, LNK417LG) uses frequency modulation. Triac dimming (LYT3326D-TL, UCC28811DR) uses phase-cut control. Application firmware and external dimming interface must be modified accordingly.