MP4000DS-LF-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP4000DS-LF-Z is an AC DC offline switcher LED driver IC manufactured by Monolithic Power Systems Inc., designed for lighting applications with analog and PWM dimming capabilities. This component operates in the 8V to 10.5V supply voltage range with a step-down (buck) topology and 110kHz switching frequency in an 8-SOIC package.

The MP4000DS-LF-Z carries a "Not For New Designs" product status, indicating it has been discontinued or superseded. Finding equivalent and substitute parts is necessary for ongoing production support, legacy system maintenance, and design flexibility when the primary component becomes unavailable.

Substiute Parts

MP4000DS-LF-Z

Monolithic Power Systems Inc.In Stock: 45798MP4000DS-LF-Z Datasheet

Current PartRFQ

HV9801ANG-G

Microchip TechnologyIn Stock: 1909HV9801ANG-G Datasheet

MFR RecommendedRFQ

HVLED815PFTR

STMicroelectronicsIn Stock: 39366HVLED815PFTR Datasheet

MFR RecommendedRFQ

LM3497MM/NOPB

Texas InstrumentsIn Stock: 1015LM3497MM/NOPB Datasheet

MFR RecommendedRFQ

RT8458AGJ6

Richtek USA Inc.In Stock: 56124RT8458AGJ6 Datasheet

MFR RecommendedRFQ

TPS92410D

Texas InstrumentsIn Stock: 1987TPS92410D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP4000DS-LF-Z is determined by the following critical parameters:

Primary Compatibility Criteria:

• AC DC offline switcher topology for lighting applications
• Single output configuration
• Step-down (buck) or equivalent topology
• Dimming capability (analog, PWM, or TRIAC)
• Surface mount package compatibility
• ROHS3 compliance and automotive-grade reliability

Secondary Considerations:

• Supply voltage range overlap or compatibility
• Switching frequency operational range
• Operating temperature range
• Moisture sensitivity level
• Package footprint and pin count

The substitute parts listed below maintain functional equivalence within the LED driver IC category while accommodating variations in voltage specifications, package sizes, and dimming control methods.

Parameter Comparison

Engineering Selection Recommendations

HV9801ANG-G (Microchip Technology) Active product status with extended operating temperature range (-40°C to 125°C). Maintains step-down buck topology and single output configuration. Supply voltage range (15V to 450V) exceeds the MP4000DS-LF-Z specification; circuit design must accommodate this higher minimum voltage. PWM dimming capability aligns with primary dimming method. 16-SOIC package requires PCB layout modification. MSL 1 rating provides superior moisture protection compared to the original part.

HVLED815PFTR (STMicroelectronics) Active product with highest operating temperature rating (-40°C to 150°C). Flyback topology differs from the original buck converter; this represents a functional alternative rather than a direct topology match. Supply voltage range (11.5V to 23V) overlaps partially with the original specification. Includes internal switch, reducing external component requirements. 166kHz switching frequency is closer to the original 110kHz than other alternatives. MSL 3 rating requires controlled storage conditions (168 hours).

LM3497MM/NOPB (Texas Instruments) Active product with supply voltage range (8V to 12V) providing the closest match to the original 8V to 10.5V specification. Maintains step-down buck topology and single output. TRIAC dimming differs from the original analog/PWM capability; suitable for applications requiring TRIAC-based dimming control. 10-VSSOP package is significantly smaller than the 8-SOIC original, enabling compact designs. MSL 1 rating provides unlimited moisture protection. Automotive-grade lighting application alignment.

RT8458AGJ6 (Richtek USA Inc.) Active product with analog dimming matching the original capability. Step-down buck topology maintains functional equivalence. Supply voltage range (17V to 31V) is substantially higher than the original specification; requires circuit redesign for voltage compatibility. TSOT-23-6 package offers the smallest footprint among substitutes. 47kHz switching frequency is lower than the original 110kHz. MSL 3 rating requires controlled storage conditions.

TPS92410D (Texas Instruments) Active product supporting both analog and TRIAC dimming, providing maximum dimming flexibility. Supply voltage range (9.5V to 450V) encompasses the original specification. 13-SOIC package is intermediate in size between the original 8-SOIC and larger alternatives. MSL 2 rating matches the original component. Topology not specified in available data; verification required before implementation.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the MP4000DS-LF-Z with any of these substitute parts without circuit modification?

A: Direct replacement without modification is not guaranteed. While all substitutes function as AC DC offline switcher LED drivers, variations in supply voltage ranges, package types, and dimming methods may require circuit redesign. The LM3497MM/NOPB offers the closest voltage specification match (8V to 12V) to the original 8V to 10.5V range.

Q: What is the primary reason for the MP4000DS-LF-Z discontinuation status?

A: The "Not For New Designs" status indicates the component has been superseded or discontinued by the manufacturer. All listed substitutes carry "Active" product status, ensuring ongoing availability and manufacturer support.

Q: How do package differences affect substitution?

A: The MP4000DS-LF-Z uses an 8-SOIC package. Substitutes employ 16-SOIC (HV9801ANG-G, HVLED815PFTR), 10-VSSOP (LM3497MM/NOPB), TSOT-23-6 (RT8458AGJ6), or 13-SOIC (TPS92410D) packages. Package changes require PCB layout redesign, including trace routing, component placement, and thermal management adjustments.

Q: Which substitute offers the best moisture protection?

A: HV9801ANG-G and LM3497MM/NOPB both feature MSL 1 rating (unlimited moisture protection), compared to the original MSL 2 rating (1 year). HVLED815PFTR and RT8458AGJ6 have MSL 3 ratings requiring controlled storage conditions (168 hours maximum exposure to 85°C/85% RH).

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original MP4000DS-LF-Z environmental certification status.

Q: What dimming control method should I select?

A: The original MP4000DS-LF-Z supports analog and PWM dimming. HV9801ANG-G and HVLED815PFTR provide PWM-only dimming. LM3497MM/NOPB and TPS92410D support TRIAC dimming for phase-cut applications. RT8458AGJ6 supports analog dimming only. Select based on your application's dimming control architecture.

Q: Which substitute has the widest supply voltage range?

A: HV9801ANG-G and TPS92410D both support 15V to 450V and 9.5V to 450V ranges respectively, providing maximum flexibility for diverse power supply designs. However, the original MP4000DS-LF-Z operates at 8V to 10.5V; verify that higher voltage ratings do not introduce design complications.

Q: Can I use HVLED815PFTR as a direct replacement if my application uses buck topology?

A: HVLED815PFTR employs flyback topology rather than buck topology. While both are step-down converters suitable for LED driver applications, the flyback topology includes an internal switch and operates differently. Circuit validation is required before implementation.