FL6630MX LED Driver IC Equivalent & Substitute Parts

Part Overview

The FL6630MX is an AC DC offline switcher LED driver IC manufactured by onsemi, designed for lighting applications with Triac dimming capability. This device features a single output, Flyback topology, and operates across a supply voltage range up to 30V with an operating temperature range of -40°C to 125°C. The FL6630MX is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements.

Substiute Parts

FL6630MX

onsemiIn Stock: 971FL6630MX Datasheet

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FL7734MX

onsemiIn Stock: 6652FL7734MX Datasheet

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HV9931LG-G

Microchip TechnologyIn Stock: 8606HV9931LG-G Datasheet

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LM3447MTE/NOPB

Texas InstrumentsIn Stock: 1365LM3447MTE/NOPB Datasheet

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LNK404LG

Power IntegrationsIn Stock: 1455LNK404LG Datasheet

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LNK406EG

Power IntegrationsIn Stock: 17337LNK406EG Datasheet

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LNK415EG

Power IntegrationsIn Stock: 16937LNK415EG Datasheet

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LNK418EG

Power IntegrationsIn Stock: 16254LNK418EG Datasheet

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TPS92411DBVR

Texas InstrumentsIn Stock: 203382TPS92411DBVR Datasheet

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UCC28810DR

Texas InstrumentsIn Stock: 3636UCC28810DR Datasheet

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TPS92210DR

Texas InstrumentsIn Stock: 32942TPS92210DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the FL6630MX is determined by the following critical parameters:

• Type: AC DC Offline Switcher (required for direct replacement)
• Topology: Flyback (primary topology match)
• Dimming Method: Triac (for compatibility with existing dimming circuits)
• Number of Outputs: 1 (single output requirement)
• Package / Case: 8-SOIC preferred for PCB layout compatibility
• Operating Temperature Range: Minimum -40°C to 125°C
• Voltage Supply Range: Must accommodate up to 30V maximum

Substitute parts are grouped into two categories:

Category 1 - Direct Topology & Dimming Match (AC DC Offline Switcher, Flyback, Triac Dimming) These parts maintain identical topology and dimming characteristics: UCC28810DR, LM3447MTE/NOPB, LNK404LG, LNK406EG, TPS92210DR

Category 2 - Alternative Topology with Functional Equivalence (AC DC Offline Switcher, Alternative Topologies, PWM or No Dimming) These parts provide functional equivalence with different topologies or dimming methods: FL7734MX, HV9931LG-G, LNK415EG, LNK418EG, TPS92411DBVR

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement with Identical Characteristics:

TPS92210DR is the primary recommended substitute. It maintains AC DC offline switcher topology with Flyback configuration and Triac dimming, operates within the required temperature range (-40°C to 125°C), and is available in the same 8-SOIC package. The device is RoHS3 compliant and carries active product status with high inventory availability (32,900 units).

For Extended Voltage Range Applications:

LNK406EG or LNK415EG from Power Integrations provide significantly extended voltage supply capability (up to 725V) while maintaining Flyback topology and Triac/PWM dimming options. These devices operate across -40°C to 150°C and are RoHS compliant. Package change to eSIP-7C requires PCB layout modification.

For Alternative Topology Requirements:

HV9931LG-G from Microchip Technology offers AC DC offline switcher functionality with Step-Down/Step-Up topology and PWM dimming in an 8-SOIC package. Operating temperature range is -40°C to 85°C, which is narrower than the original part. This option is suitable when alternative topologies are acceptable.

For Onsemi Ecosystem Continuity:

FL7734MX from onsemi provides functional equivalence with DC DC controller topology supporting multiple topologies (Flyback, Step-Down, Step-Up) and maintains the same voltage supply maximum (30V) and operating temperature range (-40°C to 125°C). Package change to 16-SOIC is required.

All recommended substitutes carry RoHS3 compliance and REACH unaffected status, matching the regulatory profile of the original FL6630MX.

Frequently Asked Questions (FAQ)

Q: Can I use TPS92210DR as a direct replacement for FL6630MX without PCB modifications?

A: Yes. TPS92210DR is available in the same 8-SOIC package and maintains identical topology (AC DC Offline Switcher, Flyback) and dimming method (Triac). Pin compatibility and functional characteristics align with FL6630MX requirements. No PCB layout changes are necessary.

Q: What is the key difference between Triac and PWM dimming options?

A: Triac dimming is used for AC line dimming applications where the dimmer circuit controls the AC waveform phase. PWM dimming uses pulse-width modulation for DC-side dimming control. Selection depends on the dimming control circuit architecture in your application.

Q: Why do Power Integrations parts (LNK406EG, LNK415EG) have much higher voltage ratings (725V)?

A: Power Integrations LinkSwitch-PH series is designed for high-voltage AC input applications. The 725V rating accommodates universal AC input (85V to 264V) with margin. These parts are suitable for applications requiring extended input voltage range beyond the FL6630MX specification.

Q: Is package change from 8-SOIC to eSIP-7C acceptable?

A: Package change requires PCB layout redesign. eSIP-7C is a through-hole package with formed leads, while 8-SOIC is surface mount. This is not a drop-in replacement and requires engineering validation of thermal and electrical performance in your specific application.

Q: What is the significance of "Obsolete" status for FL6630MX?

A: Obsolete status indicates the manufacturer has discontinued production. Existing inventory may be available from distributors, but long-term supply cannot be guaranteed. Substitution is recommended for new designs and future production planning.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All active substitute parts listed carry RoHS3 compliance certification, matching the regulatory requirements of the original FL6630MX.

Q: Can FL7734MX replace FL6630MX in existing designs?

A: FL7734MX is functionally equivalent but operates as a DC DC controller rather than an AC DC offline switcher. This topology difference may require circuit redesign. Compatibility depends on your specific application requirements and power supply architecture.