SSL5231T/1J LED Driver IC - Equivalent & Substitute Parts

Part Overview

The SSL5231T/1J is an LED driver IC manufactured by NXP USA Inc., designed for offline AC/DC lighting applications with triac dimming capability. This component functions as a single-output power management IC utilizing step-down (buck) and step-up (boost) topology for LED driver applications. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

SSL5231T/1J

NXP USA Inc.In Stock: 2120SSL5231T/1J Datasheet

Current PartRFQ

TPS92074DR

Texas InstrumentsIn Stock: 5370TPS92074DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSL5231T/1J is determined by the following critical parameters:

• Functional Type: AC DC Offline Switcher topology with step-down/step-up capability
• Output Configuration: Single output LED driver IC
• Package Compatibility: 8-SOIC surface mount package (0.154", 3.90mm width)
• Voltage Supply Range: Minimum 9.9V to 16V maximum input voltage tolerance
• Compliance Requirements: ROHS3 compliance and MSL 1 rating
• Thermal Operating Range: -40°C minimum to 160°C maximum junction temperature

The TPS92074DR from Texas Instruments meets the core functional and package requirements as an AC DC offline switcher LED driver IC in 8-SOIC packaging with equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The TPS92074DR qualifies as a functional substitute for the SSL5231T/1J based on matching core specifications: identical package geometry (8-SOIC), equivalent topology (AC DC offline switcher with buck/boost capability), single output configuration, and equivalent compliance certifications (ROHS3, MSL 1).

The TPS92074DR is currently in active production status, ensuring supply chain availability and long-term support compared to the discontinued SSL5231T/1J.

Design considerations for substitution:

• The TPS92074DR operates within a slightly wider input voltage range (11V to 18V) compared to the SSL5231T/1J (9.9V to 16V). Applications requiring operation below 11V input voltage require verification against TPS92074DR specifications.
• The TPS92074DR maximum junction temperature rating is 125°C, compared to 160°C for the SSL5231T/1J. Applications requiring sustained operation above 125°C junction temperature require thermal analysis and potential design modification.
• Pin-level compatibility and functional behavior must be verified against detailed datasheets prior to PCB layout finalization.

Frequently Asked Questions (FAQ)

Q: Can the TPS92074DR directly replace the SSL5231T/1J without PCB modifications?

A: Both components share identical 8-SOIC package geometry and pinout compatibility is likely, but pin-level functional equivalence must be confirmed through detailed datasheet comparison. PCB layout modifications may not be required if pinout is identical, but functional testing is necessary.

Q: What is the primary limitation when substituting TPS92074DR for SSL5231T/1J?

A: The TPS92074DR has a maximum junction temperature rating of 125°C versus 160°C for the SSL5231T/1J. Applications designed for sustained operation above 125°C require thermal redesign or alternative component selection.

Q: Are both components compliant with the same regulatory standards?

A: Yes. Both the SSL5231T/1J and TPS92074DR are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity ratings, meeting equivalent environmental and regulatory requirements.

Q: What is the input voltage operating range difference between these components?

A: The SSL5231T/1J operates from 9.9V to 16V, while the TPS92074DR operates from 11V to 18V. Applications with input voltages between 9.9V and 11V are not compatible with the TPS92074DR substitute.

Q: Why is the SSL5231T/1J discontinued?

A: The SSL5231T/1J is listed as discontinued at DiGi Electronics. The TPS92074DR from Texas Instruments remains in active production and provides equivalent functionality for LED driver applications.

Q: Are there any differences in dimming capability between these parts?

A: The SSL5231T/1J specifies triac dimming capability. The TPS92074DR dimming specifications are not provided in the available parameters and require datasheet verification for dimming feature compatibility.