MC33232DG Equivalent & Substitute Parts

Part Overview

The MC33232DG is a Power Factor Correction (PFC) controller IC manufactured by onsemi, operating in Critical Conduction (CRM) mode within an 8-SOIC surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. The MC33232DG was designed for power management applications requiring PFC functionality with a supply voltage range of 12V to 25V and operating temperatures from -20°C to 85°C.

Key Parameters

Parameter	MC33232DG
Manufacturer	onsemi
Category	Power Management (PMIC)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mode	Critical Conduction (CRM)
Voltage - Supply	12V ~ 25V
Current - Startup	50 µA
Operating Temperature	-20°C ~ 85°C
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MC33232DG are selected based on strict compatibility criteria within the Power Management (PMIC) category. The primary substitution parameters are:

Package compatibility: 8-SOIC (0.154", 3.90mm Width) form factor
Mounting type: Surface Mount
Functional category: PFC controller IC
Supply voltage overlap: Minimum 12V to 25V range coverage
Startup current: Within operational tolerance
Operating temperature range: Support for -20°C to 85°C minimum
Moisture sensitivity: MSL 1 (Unlimited)

The substitute parts listed operate in Discontinuous (Transition) mode rather than Critical Conduction mode, representing functional alternatives with different operational characteristics but compatible electrical interfaces and package specifications.

Parameter Comparison

Parameter	MC33232DG	L6562DTR	L6561D013TR	L6562AD	L6562ADTR
Manufacturer	onsemi	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mode	Critical Conduction (CRM)	Discontinuous (Transition)	Discontinuous (Transition)	Discontinuous (Transition)	Discontinuous (Transition)
Voltage - Supply	12V ~ 25V	10.3V ~ 22V	11V ~ 18V	10.5V ~ 22.5V	10.5V ~ 22.5V
Current - Startup	50 µA	40 µA	50 µA	30 µA	30 µA
Operating Temperature	-20°C ~ 85°C	-25°C ~ 125°C	-25°C ~ 125°C	-25°C ~ 125°C	-25°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Not For New Designs	Not For New Designs	Active	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For applications currently using the MC33232DG, the following selection criteria apply based on product status and compliance:

L6562ADTR and L6562AD are the preferred substitutes, both carrying Active product status from STMicroelectronics. These parts provide ROHS3 compliance and extended operating temperature ranges (-25°C to 125°C) exceeding the original specification. The supply voltage range of 10.5V to 22.5V overlaps the MC33232DG requirement of 12V to 25V within the 12V to 22.5V intersection band.

L6562DTR offers Active-equivalent support with 1MHz switching frequency specification and ROHS3 compliance. Supply voltage range of 10.3V to 22V provides partial coverage of the original 12V to 25V specification.

L6561D013TR carries Not For New Designs status with a narrower supply voltage range of 11V to 18V, limiting its applicability to designs operating within this band.

All substitute parts maintain 8-SOIC package compatibility, surface mount mounting type, and MSL 1 moisture sensitivity rating. The transition from Critical Conduction mode to Discontinuous (Transition) mode operation requires circuit-level evaluation for specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can L6562ADTR directly replace MC33232DG in existing designs?

A: L6562ADTR shares the 8-SOIC package, surface mount configuration, and MSL 1 rating. The supply voltage range of 10.5V to 22.5V covers the 12V to 25V specification within the 12V to 22.5V overlap. The operational mode differs (Discontinuous vs. Critical Conduction), requiring circuit validation.

Q: What is the difference between L6562DTR and L6562ADTR?

A: L6562DTR specifies 1MHz switching frequency and carries Not For New Designs status. L6562ADTR has Active product status with no switching frequency specification provided. Both share identical package, voltage range (10.5V to 22.5V), and temperature range (-25°C to 125°C) specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. L6562DTR, L6561D013TR, L6562AD, and L6562ADTR all carry ROHS3 compliance certification. The original MC33232DG ROHS status was not specified in the provided data.

Q: Which substitute has the best product availability status?

A: L6562ADTR and L6562AD both carry Active product status, indicating ongoing manufacturer support and availability. L6562DTR and L6561D013TR are classified as Not For New Designs, suitable for legacy system maintenance only.

Q: Do all substitutes support the full -20°C to 85°C operating range?

A: All substitute parts support extended operating ranges of -25°C to 125°C, exceeding the MC33232DG specification of -20°C to 85°C. This provides additional thermal margin for applications within the original temperature band.

Q: What packaging options are available for the substitute parts?

A: L6562DTR and L6562ADTR are supplied in Cut Tape (CT) & Digi-Reel® packaging. L6562AD is supplied in Tube packaging. L6561D013TR is supplied in Cut Tape (CT) & Digi-Reel® packaging. All maintain the 8-SOIC form factor.

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