SSL21083AT/1,118 LED Driver IC Equivalent & Substitute Parts

Part Overview

The SSL21083AT/1,118 is an offline LED driver IC manufactured by NXP USA Inc., designed for AC/DC lighting applications with a 1A output switch capability. This component operates as a step-down (buck) topology switcher with an internal switch, supporting a supply voltage range of 8V to 16V. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. With 2200 pieces in stock and ROHS3 compliance, this part served critical functions in offline LED lighting circuits before discontinuation.

Substiute Parts

SSL21083AT/1,118

NXP USA Inc.In Stock: 2275SSL21083AT/1,118 Datasheet

Current PartRFQ

MP4032-1GS

Monolithic Power Systems Inc.In Stock: 5672MP4032-1GS Datasheet

MFR RecommendedRFQ

TPS92075DDCR/NOPB

Texas InstrumentsIn Stock: 1562TPS92075DDCR/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SSL21083AT/1,118 is determined by the following critical parameters:

• AC/DC Offline Switcher Type: All substitutes must function as offline LED driver ICs for lighting applications
• Output Configuration: Single output requirement maintained across all alternatives
• Internal Switch Presence: Substitutes must include an internal switch for direct replacement capability
• Supply Voltage Compatibility: Operating voltage range must overlap or encompass the 8V-16V specification
• Current Rating: 1A output/switch current capability required
• Package Compatibility: 8-pin surface mount packages (8-SOIC or equivalent footprint) for PCB layout compatibility
• Compliance Standards: ROHS3 compliance and EAR99 classification maintained
• Operating Temperature Range: -40°C to 125°C thermal specification

The two identified substitutes—MP4032-1GS (Monolithic Power Systems) and TPS92075DDCR/NOPB (Texas Instruments)—meet these core substitution criteria while offering active product status and continued availability.

Parameter Comparison

Engineering Selection Recommendations

MP4032-1GS (Monolithic Power Systems Inc.)

This substitute maintains 8-SOIC package compatibility with the original SSL21083AT/1,118, supporting the same 1A output current specification. The supply voltage range (10.3V–27V) encompasses the original 8V–16V window, providing broader operational flexibility. The Flyback topology differs from the original Step-Down configuration but delivers equivalent offline LED driver functionality. Product status is Active with 5648 units in stock. ROHS3 compliance and EAR99 classification are maintained. MSL rating of 2 (1 Year) requires standard moisture control during storage and handling.

TPS92075DDCR/NOPB (Texas Instruments)

This substitute operates within the 11V–18V supply range, overlapping the original specification. The SOT-23-6 Thin package represents a footprint change from the 8-SOIC original, requiring PCB layout modification. The absence of an internal switch differs from the original design, necessitating external switching components. The Step-Down/Step-Up (Buck/Boost) topology provides flexible voltage conversion. Product status is Active with 1533 units in stock. ROHS3 compliance, EAR99 classification, and MSL 1 (Unlimited) rating are maintained.

Frequently Asked Questions (FAQ)

Q: Can MP4032-1GS directly replace SSL21083AT/1,118 without PCB modifications?

A: MP4032-1GS maintains the 8-SOIC package footprint, enabling direct PCB placement compatibility. However, the Flyback topology differs from the original Step-Down configuration, requiring verification of circuit design compatibility with the substitute's operational characteristics.

Q: What is the primary difference between MP4032-1GS and TPS92075DDCR/NOPB?

A: MP4032-1GS retains the 8-SOIC package matching the original SSL21083AT/1,118 footprint, while TPS92075DDCR/NOPB uses a smaller SOT-23-6 Thin package requiring PCB redesign. Additionally, MP4032-1GS includes an internal switch, whereas TPS92075DDCR/NOPB requires external switching components.

Q: Are both substitutes suitable for the same supply voltage range?

A: MP4032-1GS (10.3V–27V) and TPS92075DDCR/NOPB (11V–18V) both support the original 8V–16V range, though with different upper limits. MP4032-1GS provides extended voltage capability up to 27V.

Q: What moisture sensitivity considerations apply to these substitutes?

A: MP4032-1GS carries MSL 2 (1 Year), requiring controlled storage conditions. TPS92075DDCR/NOPB carries MSL 1 (Unlimited), matching the original SSL21083AT/1,118 specification with no time-limited moisture sensitivity constraints.

Q: Do both substitutes maintain ROHS3 and EAR99 compliance?

A: Yes, both MP4032-1GS and TPS92075DDCR/NOPB are ROHS3 compliant and classified as EAR99, maintaining regulatory alignment with the original SSL21083AT/1,118.

Q: Which substitute requires fewer design modifications?

A: MP4032-1GS requires minimal modifications due to package compatibility and integrated internal switch. TPS92075DDCR/NOPB requires PCB layout changes for the smaller SOT-23-6 package and external switch implementation.