SSL5511T/1J LED Driver IC Equivalent & Substitute Parts

Part Overview

The SSL5511T/1J is an AC DC offline switcher LED driver IC manufactured by NXP USA Inc., designed for lighting applications with analog dimming capability. This GreenChip™ series component features a single output configuration supporting multiple topologies including Flyback, SEPIC, Step-Down (Buck), and Step-Up (Boost) architectures. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design requirements and production continuity.

Substiute Parts

SSL5511T/1J

NXP USA Inc.In Stock: 2302SSL5511T/1J Datasheet

Current PartRFQ

CPC9909NE

IXYS Integrated Circuits DivisionIn Stock: 2168CPC9909NE Datasheet

MFR RecommendedRFQ

UCC28810D

Texas InstrumentsIn Stock: 1919UCC28810D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSL5511T/1J is determined by the following critical parameters:

Primary Compatibility Criteria:

• Package compatibility: 8-SOIC form factor (0.154", 3.90mm Width)
• Single output configuration
• AC DC offline switcher topology support
• Surface mount mounting type
• RoHS3 compliance and MSL Level 1 rating

Secondary Compatibility Factors:

• Voltage supply range overlap with original specification (8.8V to 32V minimum)
• Supported topologies (Flyback, SEPIC, Buck, Boost)
• Operating temperature range coverage
• Dimming capability (Analog or PWM acceptable for lighting applications)

The identified substitutes meet these core electrical and mechanical requirements while maintaining functional equivalence for LED driver applications.

Parameter Comparison

Engineering Selection Recommendations

CPC9909NE (IXYS Integrated Circuits Division): This substitute maintains the 8-SOIC package footprint and single-output configuration. The part is currently active in production with ROHS3 compliance and MSL Level 1 rating. The voltage supply maximum of 550V exceeds the original specification, providing extended operating range capability. PWM dimming replaces analog dimming, requiring circuit design adaptation. Operating temperature maximum of 85°C is lower than the original 125°C specification. This substitute is suitable for applications where PWM dimming compatibility exists and thermal requirements do not exceed 85°C.

UCC28810D (Texas Instruments): This substitute provides full topology support matching the original SSL5511T/1J, including Flyback and SEPIC configurations. The part features an internal switch and is currently active in production with ROHS3 compliance and MSL Level 1 rating. The voltage supply maximum of 18V is lower than the original 32V specification, limiting high-voltage applications. Triac dimming replaces analog dimming, requiring circuit design modification. Operating temperature range of -40°C to 105°C provides adequate coverage for most lighting applications. This substitute is suitable for applications requiring Triac dimming compatibility and operating within the 18V maximum supply voltage constraint.

Frequently Asked Questions (FAQ)

Q: Can CPC9909NE directly replace SSL5511T/1J without circuit modifications? A: No. While both parts share the 8-SOIC package and single-output configuration, the dimming method differs (PWM versus Analog). Circuit design changes are required to accommodate PWM dimming control. Additionally, the maximum operating temperature of 85°C must be verified against application requirements.

Q: What is the primary limitation of UCC28810D as a substitute? A: The maximum supply voltage of 18V is lower than the SSL5511T/1J specification of 32V. Applications requiring operation above 18V supply voltage cannot use this substitute. Triac dimming also requires circuit design adaptation from the original analog dimming approach.

Q: Are all three parts pin-compatible? A: All three parts use the 8-SOIC package with 0.154" width and 3.90mm dimensions. However, pin-level compatibility depends on specific pinout configuration, which is not provided in this reference. PCB layout verification is required before substitution.

Q: Which substitute offers the widest voltage supply range? A: CPC9909NE provides the widest voltage supply range with a maximum of 550V, compared to 32V for SSL5511T/1J and 18V for UCC28810D. This extended range may be beneficial for universal input applications.

Q: Do all substitutes maintain RoHS3 compliance? A: Yes. Both CPC9909NE and UCC28810D are ROHS3 compliant with MSL Level 1 rating, matching the original SSL5511T/1J compliance status.

Q: What dimming methods are supported across all three parts? A: SSL5511T/1J supports Analog dimming. CPC9909NE supports PWM dimming. UCC28810D supports Triac dimming. No single substitute supports the original analog dimming method without circuit modification.