MP4021GS-LF LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP4021GS-LF is an AC DC offline switcher LED driver IC manufactured by Monolithic Power Systems Inc. This single-output flyback topology device operates across a 10.3V to 23V supply range and is designed for lighting applications. The part is currently active in production with 1008 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

MP4021GS-LF

Monolithic Power Systems Inc.In Stock: 1074MP4021GS-LF Datasheet

Current PartRFQ

MP4021GS-A

Monolithic Power Systems Inc.In Stock: 1158MP4021GS-A Datasheet

Parametric EquivalentRFQ

TPS92411DDAR

Texas InstrumentsIn Stock: 25371TPS92411DDAR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP4021GS-LF are classified based on strict alignment with the following critical parameters:

• Topology: Flyback AC DC offline switcher configuration
• Number of Outputs: Single output
• Supply Voltage Range: Minimum 10.3V, Maximum 23V
• Package Type: 8-pin SOIC or compatible surface-mount package
• Application: Lighting
• Compliance: ROHS3 compliant, MSL 2 rating
• Product Status: Active production status

Parametric equivalents maintain identical or functionally equivalent specifications across all critical parameters. Manufacturer-recommended substitutes may extend certain specifications (such as supply voltage range or operating temperature) while maintaining core functionality and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

MP4021GS-A (Parametric Equivalent)

The MP4021GS-A is a parametric equivalent to the MP4021GS-LF, maintaining identical electrical specifications and package configuration. Both parts are manufactured by Monolithic Power Systems Inc. and share the same base product number (MP4021). This substitute is suitable for direct replacement in applications where the MP4021GS-LF is specified, with no design modifications required. Both parts carry active product status, ROHS3 compliance, and identical MSL ratings.

TPS92411DDAR (Manufacturer-Recommended Substitute)

The TPS92411DDAR is a Texas Instruments LED driver IC recommended as a substitute for the MP4021GS-LF. This part extends the supply voltage range (7.5V to 100V) and operating temperature range (-40°C to 150°C), providing broader application flexibility. The TPS92411DDAR supports additional topologies (Step-Down and Step-Up) beyond the flyback configuration and includes an internal switch. The package footprint remains compatible (8-pin, 3.90mm width), though the PowerSOIC variant provides enhanced thermal characteristics. This substitute is appropriate for designs requiring extended voltage or temperature specifications while maintaining the same pin-compatible package form factor.

Frequently Asked Questions (FAQ)

Q: Can MP4021GS-A be used as a direct replacement for MP4021GS-LF?

A: Yes. The MP4021GS-A is a parametric equivalent with identical electrical specifications, supply voltage range (10.3V to 23V), operating temperature range (-40°C to 125°C), and 8-SOIC package configuration. No circuit modifications are required.

Q: What are the key differences between MP4021GS-LF and TPS92411DDAR?

A: The TPS92411DDAR extends the supply voltage range to 7.5V–100V (versus 10.3V–23V) and operating temperature to -40°C–150°C (versus -40°C–125°C). The TPS92411DDAR includes an internal switch and supports additional topologies (buck and boost). Both maintain the same 8-pin surface-mount package footprint and single-output configuration.

Q: Are all three parts pin-compatible?

A: The MP4021GS-LF and MP4021GS-A are pin-compatible in 8-SOIC packages. The TPS92411DDAR uses an 8-PowerSOIC package, which maintains the same 3.90mm width and pin pitch but includes a PowerPad for enhanced thermal dissipation. PCB layout modifications may be required to utilize the PowerPad feature.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, carry MSL 2 ratings (1 Year), and maintain REACH unaffected status. All parts are classified under ECCN EAR99 and HTSUS 8542.39.0001.

Q: Which substitute should be selected for extended voltage or temperature applications?

A: The TPS92411DDAR is suitable for applications requiring supply voltages below 10.3V or above 23V, or operating temperatures above 125°C. For applications within the MP4021GS-LF specifications, the MP4021GS-A provides equivalent performance with identical electrical characteristics.