IX9908N LED Driver IC - Equivalent & Substitute Parts

Part Overview

The IX9908N is an AC DC offline switcher LED driver IC manufactured by IXYS Integrated Circuits Division, designed for lighting applications. This single-output flyback topology device operates with a supply voltage range of 10.5V to 18V and is housed in an 8-SOIC surface mount package. The part is currently active in production with 1021 units in stock inventory. Alternative components may be required due to supply constraints, design optimization, or application-specific requirements such as different dimming capabilities or package preferences.

Substiute Parts

IX9908N

IXYS Integrated Circuits DivisionIn Stock: 1107IX9908N Datasheet

Current PartRFQ

LT3799EMSE-1#PBF

Analog Devices Inc.In Stock: 25435LT3799EMSE-1#PBF Datasheet

MFR RecommendedRFQ

MP4653GY

Monolithic Power Systems Inc.In Stock: 953MP4653GY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IX9908N are selected based on the following critical parameters that define functional equivalence:

• Type: AC DC Offline Switcher topology for direct application compatibility
• Number of Outputs: Single output configuration matching the main part
• Supply Voltage Range: Compatibility with 10.5V to 18V input or overlapping range
• Mounting Type: Surface mount technology for PCB integration
• RoHS Compliance: ROHS3 compliance for regulatory alignment
• Product Status: Active production status ensuring availability

The substitute parts identified operate within these constraints while accommodating variations in package form factor, dimming methodology, and internal topology that do not affect core functionality in lighting applications.

Parameter Comparison

Engineering Selection Recommendations

All three components—IX9908N, LT3799EMSE-1#PBF, and MP4653GY—maintain active production status and ROHS3 compliance, meeting current regulatory requirements for lighting applications.

LT3799EMSE-1#PBF (Analog Devices Inc.) shares the flyback topology with the IX9908N and maintains identical MSL rating (1, Unlimited), providing the closest functional alignment. Supply voltage specifications are not provided for this part; verification against application requirements is necessary. The 16-MSOP-EP package differs from the 8-SOIC form factor and requires PCB layout adjustment.

MP4653GY (Monolithic Power Systems Inc.) operates with a wider supply voltage range (9V to 30V), encompassing the IX9908N operating window. The half-bridge topology differs from the flyback configuration. MSL rating of 3 (168 Hours) indicates moisture sensitivity requirements during storage and handling. The 20-SOIC package is larger than the IX9908N, affecting board space allocation.

Selection between substitutes depends on PCB layout constraints, supply voltage margin requirements, and moisture handling capabilities during manufacturing and storage.

Frequently Asked Questions (FAQ)

Q: Can LT3799EMSE-1#PBF directly replace IX9908N in existing designs?

A: Both parts are AC DC offline switcher LED drivers with single outputs and flyback topology. Package differences (16-MSOP-EP versus 8-SOIC) require PCB layout modification. Supply voltage specifications for LT3799EMSE-1#PBF are not provided; confirm compatibility with your application's input voltage range before substitution.

Q: What are the key differences between flyback and half-bridge topologies in these parts?

A: Both topologies are used in AC DC offline switcher applications. The IX9908N and LT3799EMSE-1#PBF use flyback topology, while MP4653GY uses half-bridge topology. Topology selection affects transformer design, efficiency characteristics, and component count. Substitution between different topologies requires circuit redesign validation.

Q: Does MSL rating affect part selection?

A: MSL (Moisture Sensitivity Level) rating indicates moisture absorption during storage. IX9908N and LT3799EMSE-1#PBF have MSL 1 (Unlimited), requiring no special handling. MP4653GY has MSL 3 (168 Hours), requiring controlled storage conditions and baking procedures before reflow soldering. Select based on your manufacturing environment and storage capabilities.

Q: Are package size differences critical for substitution?

A: Yes. IX9908N uses 8-SOIC (3.90mm width), LT3799EMSE-1#PBF uses 16-MSOP-EP (3.00mm width), and MP4653GY uses 20-SOIC (7.50mm width). Different packages require distinct PCB footprints, trace routing, and thermal management considerations. Verify PCB layout compatibility before selecting a substitute.

Q: Do all parts meet current compliance standards?

A: All three parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for lighting applications. All carry EAR99 ECCN classification and 8542.39.0001 HTSUS code.