MP4068GS-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP4068GS-Z is an AC DC offline switcher LED driver IC manufactured by Monolithic Power Systems Inc., designed for lighting applications requiring triac dimming capability. This single-output device operates with a supply voltage range of 4.1V to 5V and delivers 160mA output current in an 8-SOIC surface mount package. The device is currently in active production status with substantial inventory availability (276,700 pcs). Finding equivalent substitute parts may be necessary due to supply chain constraints, lead time requirements, or design optimization needs while maintaining functional compatibility with the original specification.

Substiute Parts

MP4068GS-Z

Monolithic Power Systems Inc.In Stock: 276717MP4068GS-Z Datasheet

Current PartRFQ

TPS92002DR

Texas InstrumentsIn Stock: 1152TPS92002DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP4068GS-Z is determined by the following critical parameters:

Primary Compatibility Criteria:

• AC DC offline switcher topology with triac dimming support
• Single output configuration
• 8-SOIC surface mount package
• ROHS3 compliance and EAR99 export classification
• Lighting application suitability

Secondary Compatibility Factors:

• Supply voltage range compatibility (minimum 4.1V to 5V operation)
• Output voltage capability (50V or higher)
• Output current capacity (160mA or greater)
• Operating frequency range suitable for LED driver applications

The TPS92002DR from Texas Instruments qualifies as a manufacturer-recommended substitute based on shared core functionality: AC DC offline switcher architecture, triac dimming capability, single output design, 8-SOIC package format, and identical compliance certifications. Topology variations (Flyback and Step-Down vs. Step-Down and Step-Up) and differing electrical specifications require design validation for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

MP4068GS-Z (Primary Selection): The MP4068GS-Z maintains active production status with high inventory availability (276,700 pcs), ensuring reliable supply chain access. ROHS3 compliance and unlimited REACH applicability support long-term product lifecycle requirements. This device is the preferred choice for new designs and ongoing production where supply continuity is prioritized.

TPS92002DR (Substitute Selection): The TPS92002DR is designated as a manufacturer-recommended substitute by Monolithic Power Systems Inc. However, this device carries a Last Time Buy status, indicating discontinued production with limited remaining inventory (1,085 pcs). Selection of TPS92002DR is appropriate only when existing designs require component-level compatibility validation and when supply from the primary part is unavailable. The superior moisture sensitivity rating (MSL 1 vs. MSL 2) and extended operating temperature specification (-40°C to 85°C) may provide advantages in specific environmental applications, provided electrical parameter differences are accommodated in circuit design.

Compliance Considerations: Both devices maintain ROHS3 compliance and EAR99 export classification, supporting regulatory requirements across standard markets. MSL ratings differ, requiring appropriate handling and storage protocols during manufacturing.

Frequently Asked Questions (FAQ)

Q: Can TPS92002DR be used as a direct pin-for-pin replacement for MP4068GS-Z?

A: Both devices utilize the 8-SOIC package with identical physical dimensions (0.154" width, 3.90mm). However, pinout compatibility and internal lead assignments must be verified against device datasheets before implementation. Package compatibility does not guarantee functional interchangeability.

Q: What are the key electrical differences between these devices?

A: The MP4068GS-Z operates with a 4.1V to 5V supply range and delivers 50V output, while TPS92002DR accepts up to 21V supply and produces 5V output. Switching frequency differs (22kHz vs. 100kHz). These differences require circuit redesign and validation for successful substitution.

Q: Why is TPS92002DR marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. Existing inventory is available for a limited period. New designs should prioritize the MP4068GS-Z to ensure long-term supply availability and avoid future obsolescence issues.

Q: Are there moisture sensitivity or storage differences?

A: Yes. MP4068GS-Z carries MSL 2 (1 Year shelf life), while TPS92002DR carries MSL 1 (Unlimited shelf life). TPS92002DR provides superior moisture resistance and longer storage capability without baking requirements.

Q: What applications are these devices suitable for?

A: Both devices are specified for lighting applications with triac dimming capability, supporting AC DC offline switcher architectures for LED driver implementations.

Q: How do the operating temperature ranges compare?

A: TPS92002DR specifies -40°C to 85°C operating range. MP4068GS-Z operating temperature is not provided in the available specifications. Applications requiring defined temperature performance should reference complete device datasheets.