SSL1623PH/N1,112 LED Driver IC Equivalent & Substitute Parts

Part Overview

The SSL1623PH/N1,112 is an AC DC offline switcher LED driver IC manufactured by NXP USA Inc., designed for lighting applications with a 2A output capacity and flyback topology. This component operates across a wide input voltage range (80V–276V) and supports offline dimming functionality. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance.

Substiute Parts

SSL1623PH/N1,112

NXP USA Inc.In Stock: 1090SSL1623PH/N1,112 Datasheet

Current PartRFQ

LNK406LG

Power IntegrationsIn Stock: 1245LNK406LG Datasheet

MFR RecommendedRFQ

MP4027GJ-Z

Monolithic Power Systems Inc.In Stock: 36443MP4027GJ-Z Datasheet

MFR RecommendedRFQ

MP4088GS-Z

Monolithic Power Systems Inc.In Stock: 4748MP4088GS-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SSL1623PH/N1,112 is determined by the following critical parameters:

• Topology: Flyback AC DC offline switcher architecture
• Application Domain: LED driver for lighting systems
• Internal Switch: Integrated power switch capability
• Single Output: One output channel configuration
• Input Voltage Range: Support for high-voltage AC input (80V–276V minimum)
• Output Current Capacity: 2A or compatible current rating
• Dimming Support: Offline dimming capability
• Compliance: RoHS3 compliance and REACH unaffected status

The substitute parts listed below maintain functional equivalence within the LED driver category while accommodating variations in package type, mounting technology, and specific dimming implementation methods.

Parameter Comparison

Engineering Selection Recommendations

LNK406LG (Power Integrations): This part maintains active product status and supports the full AC DC offline switcher architecture with flyback topology and integrated internal switch. It operates across a wider input voltage range (36V–725V) and includes triac dimming support. The through-hole mounting type aligns with the original SSL1623PH/N1,112 form factor, though the package is smaller (7-SSIP vs. 16-DIP). Operating temperature range extends to -40°C, providing enhanced thermal margin. RoHS compliance and unlimited MSL rating ensure regulatory and environmental stability.

MP4027GJ-Z (Monolithic Power Systems Inc.): This substitute operates as an AC DC offline switcher with flyback topology but lacks an internal switch, requiring external switching components. The input voltage range (12V–28V) is significantly lower than the original part, limiting applicability to low-voltage AC input scenarios. Surface mount packaging (TSOT-23-8) requires PCB redesign. PWM dimming differs from the original offline dimming approach. Active product status and ROHS3 compliance are maintained.

MP4088GS-Z (Monolithic Power Systems Inc.): This part employs a buck-boost topology rather than pure flyback, with integrated internal switch and triac dimming support. The input voltage range (4.5V–5V) is restricted to low-voltage applications, making it unsuitable for high-voltage AC input scenarios. Surface mount 8-SOIC packaging requires board redesign. Active product status and ROHS3 compliance are confirmed. MSL rating of 2 (1 Year) requires controlled storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the LNK406LG directly replace the SSL1623PH/N1,112 in existing designs?

A: The LNK406LG maintains functional equivalence as an AC DC offline switcher LED driver with flyback topology and integrated switch. However, the package change from 16-DIP through-hole to 7-SSIP through-hole requires PCB layout modification. Input voltage range compatibility (36V–725V vs. 80V–276V) is broader, and triac dimming replaces the original offline dimming method. Electrical validation is necessary to confirm circuit compatibility.

Q: Why do MP4027GJ-Z and MP4088GS-Z have lower input voltage ratings?

A: MP4027GJ-Z and MP4088GS-Z are designed for low-voltage DC input applications (12V–28V and 4.5V–5V respectively), whereas the SSL1623PH/N1,112 is engineered for direct AC mains input (80V–276V). These parts are not suitable for high-voltage AC offline applications and are applicable only to isolated low-voltage LED driver scenarios.

Q: What is the impact of package type differences on substitution?

A: The SSL1623PH/N1,112 uses through-hole 16-DIP packaging. LNK406LG also uses through-hole mounting (7-SSIP), allowing socket or direct PCB mounting with minimal redesign. MP4027GJ-Z and MP4088GS-Z employ surface mount packages (TSOT-23-8 and 8-SOIC), requiring PCB redesign, reflow soldering capability, and updated assembly processes.

Q: Are all substitute parts RoHS compliant?

A: Yes. The SSL1623PH/N1,112 is ROHS3 compliant. LNK406LG is RoHS compliant, and both MP4027GJ-Z and MP4088GS-Z are ROHS3 compliant. All parts are REACH unaffected, meeting environmental and regulatory requirements.

Q: What is the significance of MSL (Moisture Sensitivity Level) differences?

A: The SSL1623PH/N1,112 and LNK406LG both have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions and indefinite shelf life. MP4027GJ-Z also has MSL 1. MP4088GS-Z has MSL 2 (1 Year), requiring controlled storage at specified humidity levels and limiting shelf life to one year from manufacturing date.

Q: How do dimming methods differ among the substitute parts?

A: The SSL1623PH/N1,112 supports offline dimming. LNK406LG and MP4088GS-Z support triac dimming, compatible with standard AC dimmer switches. MP4027GJ-Z uses PWM dimming, requiring digital control signals rather than AC mains phase control. Dimming method selection depends on the end-application control interface.