SSL21082AT/1,118 LED Driver IC - Equivalent & Substitute Parts

Part Overview

The SSL21082AT/1,118 is an AC DC offline switcher LED driver IC manufactured by NXP USA Inc., designed for lighting applications with Triac dimming capability. This component features a 2A switch output, dual topology support (Step-Down Buck and Step-Up Boost), and operates across an 8V to 16V supply range. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain compatibility with existing lighting control designs.

Substiute Parts

SSL21082AT/1,118

NXP USA Inc.In Stock: 847SSL21082AT/1,118 Datasheet

Current PartRFQ

HV9923N3-G

Microchip TechnologyIn Stock: 1649HV9923N3-G Datasheet

MFR RecommendedRFQ

MP4050AGS-Z

Monolithic Power Systems Inc.In Stock: 3895MP4050AGS-Z Datasheet

MFR RecommendedRFQ

MP4068GS-Z

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

MFR RecommendedRFQ

TPS92411PDBVT

Texas InstrumentsIn Stock: 20155TPS92411PDBVT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SSL21082AT/1,118 is determined by the following critical parameters:

Primary Substitution Criteria:

• AC DC offline switcher topology for lighting applications
• Triac dimming capability
• Single output configuration
• Surface mount packaging compatibility
• ROHS3 compliance and EAR99 classification

Secondary Compatibility Factors:

• Supply voltage range (minimum 8V operation required)
• Output current capacity (2A switch rating)
• Operating temperature range (-40°C minimum)
• Internal switch presence for direct control

The substitute parts listed below maintain functional equivalence within the lighting driver category while accommodating variations in package form factor, supply voltage specifications, and output current ratings based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

HV9923N3-G (Microchip Technology) Suitable for applications requiring Triac dimming with through-hole mounting. Minimum supply voltage of 20V exceeds the SSL21082AT/1,118 specification; verify supply voltage compatibility in target application. Operating temperature maximum of 85°C is lower than the original part. Active product status with ROHS3 compliance.

MP4050AGS-Z (Monolithic Power Systems Inc.) Surface mount alternative with active product status. Supply voltage range (4.1V to 5V) differs significantly from the original part; applicable only to designs operating within this narrower voltage window. Lacks Triac dimming capability. ROHS3 compliant with automotive grade qualification.

MP4068GS-Z (Monolithic Power Systems Inc.) Surface mount LED driver with Triac dimming support and dual topology (Buck/Boost). Supply voltage range (4.1V to 5V) requires design verification against the original 8V to 16V specification. No internal switch; external switching may be required. Highest inventory availability (276,700 pcs). ROHS3 compliant.

TPS92411PDBVT (Texas Instruments) Broadest supply voltage range (7.5V to 94V) with extended operating temperature to 150°C. Supports Flyback, Buck, and Boost topologies. Lacks Triac dimming specification. SOT-23-5 package represents smallest form factor. Active product status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the SSL21082AT/1,118 be directly replaced with any of these substitutes? A: Direct replacement depends on application-specific requirements. All substitutes maintain AC DC offline switcher functionality for lighting, but differ in supply voltage ranges, package form factors, and dimming capabilities. Verify supply voltage compatibility and dimming requirements before selection.

Q: Which substitute best matches the original part's Triac dimming capability? A: MP4068GS-Z and HV9923N3-G both support Triac dimming. MP4068GS-Z maintains surface mount packaging and dual topology support. HV9923N3-G uses through-hole TO-92-3 packaging and requires higher minimum supply voltage (20V).

Q: What is the impact of different supply voltage ranges? A: The original part operates from 8V to 16V. MP4050AGS-Z and MP4068GS-Z operate from 4.1V to 5V, requiring design modification for lower voltage applications. HV9923N3-G requires minimum 20V. TPS92411PDBVT supports 7.5V to 94V, offering broader compatibility.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitutes maintain ROHS3 compliance and EAR99 classification, matching the original part's regulatory status.

Q: How does package form factor affect substitution? A: The original uses 14-SOIC with 12 leads. MP4050AGS-Z and MP4068GS-Z use 8-SOIC packages; HV9923N3-G uses through-hole TO-92-3; TPS92411PDBVT uses SOT-23-5. PCB layout and footprint redesign may be necessary.

Q: What is the significance of internal switch presence? A: The original part and most substitutes include internal switches for direct control. MP4068GS-Z lacks an internal switch, requiring external switching circuitry for equivalent functionality.

Q: Which substitute has the highest inventory availability? A: MP4068GS-Z has the highest inventory (276,700 pcs), followed by HV9923N3-G (1,615 pcs) and TPS92411PDBVT (20,050 pcs).