MC33232D PFC Controller Equivalent & Substitute Parts

Part Overview

The MC33232D is a Power Factor Correction (PFC) controller IC manufactured by onsemi, designed for critical conduction mode operation in 8-SOIC surface mount packaging. This component operates within a 12V to 25V supply voltage range with a 50 µA startup current and supports operating temperatures from -20°C to 85°C. The MC33232D is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support.

Substiute Parts

MC33232D

onsemiIn Stock: 1232MC33232D Datasheet

Current PartRFQ

L6562DTR

STMicroelectronicsIn Stock: 55369L6562DTR Datasheet

DirectRFQ

L6561D013TR

STMicroelectronicsIn Stock: 100450L6561D013TR Datasheet

SimilarRFQ

L6562AD

STMicroelectronicsIn Stock: 19440L6562AD Datasheet

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L6562ADTR

STMicroelectronicsIn Stock: 60472L6562ADTR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MC33232D is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use 8-SOIC (0.154", 3.90mm Width) surface mount packaging to ensure PCB layout compatibility
• Functional Category: All substitutes are PFC controller ICs within the Power Management (PMIC) category
• Supply Voltage Range: Substitute parts must operate within overlapping or extended voltage ranges that encompass the MC33232D operating window (12V ~ 25V)
• Startup Current: Substitute parts operate at comparable startup current levels (30 µA to 50 µA range)
• Operating Temperature Range: Substitute parts must support the required temperature envelope or extended ranges
• Mounting Type: Surface mount technology consistency across all alternatives

The MC33232D operates in Critical Conduction (CRM) mode. Available substitutes operate in Discontinuous (Transition) mode, which represents a functional alternative for PFC applications while maintaining the same package footprint and electrical interface requirements.

Parameter Comparison

Engineering Selection Recommendations

For Active Production and New Designs:

L6562AD and L6562ADTR are the primary recommended substitutes. Both parts carry Active product status and ROHS3 compliance, making them suitable for new design implementations. L6562ADTR offers Cut Tape and Digi-Reel packaging options for automated assembly, while L6562AD is available in Tube packaging. Both variants operate within the MC33232D supply voltage range (10.5V ~ 22.5V encompasses 12V ~ 25V operation) and support extended operating temperatures (-25°C ~ 125°C).

For Legacy System Support:

L6562DTR and L6561D013TR are classified as Not For New Designs but remain available for legacy system maintenance. L6562DTR operates at 1MHz switching frequency with 40 µA startup current and 10.3V ~ 22V supply range. L6561D013TR maintains 50 µA startup current matching the MC33232D specification with 11V ~ 18V supply range. Both provide ROHS3 compliance and extended temperature support.

Compliance Considerations:

All substitute parts are ROHS3 compliant, addressing the RoHS non-compliance status of the obsolete MC33232D. All substitutes maintain REACH Unaffected status and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can L6562AD or L6562ADTR directly replace MC33232D in existing designs?

A: Both parts share identical 8-SOIC packaging and surface mount configuration. The supply voltage ranges overlap within the MC33232D operating window. However, the functional mode differs: MC33232D operates in Critical Conduction (CRM) mode while L6562AD and L6562ADTR operate in Discontinuous (Transition) mode. Circuit performance characteristics will differ and require application-level validation.

Q: What is the difference between L6562AD and L6562ADTR?

A: Both parts are electrically identical with matching specifications. The primary difference is packaging format: L6562AD is supplied in Tube packaging, while L6562ADTR is supplied in Cut Tape (CT) and Digi-Reel format. Selection depends on assembly process requirements and volume handling.

Q: Why are L6562DTR and L6561D013TR marked as Not For New Designs?

A: These parts remain available for legacy system support and maintenance but are not recommended for new product development. L6562AD and L6562ADTR carry Active status and are the preferred choices for new designs requiring PFC controller functionality.

Q: Are all substitute parts RoHS compliant?

A: Yes. All four substitute parts (L6562DTR, L6561D013TR, L6562AD, L6562ADTR) are ROHS3 compliant, addressing the RoHS non-compliance status of the obsolete MC33232D.

Q: What are the key electrical differences between substitute options?

A: L6562DTR specifies 1MHz switching frequency with 40 µA startup current and 10.3V ~ 22V supply range. L6561D013TR maintains 50 µA startup current with 11V ~ 18V supply range. L6562AD and L6562ADTR both feature 30 µA startup current with 10.5V ~ 22.5V supply range. All operate across -25°C ~ 125°C temperature range, exceeding the MC33232D specification.

Q: Is package footprint identical across all parts?

A: Yes. All parts use 8-SOIC (0.154", 3.90mm Width) surface mount packaging, ensuring PCB layout compatibility without redesign.