MC33063AMDREP Equivalent & Substitute Parts

Part Overview

The MC33063AMDREP is a Buck, Boost Switching Regulator IC manufactured by Texas Instruments, designed for positive or negative adjustable output applications. This integrated circuit provides 1.5A switch current capability with adjustable output voltage from 1.25V to 40V, operating across a wide input voltage range of 3V to 40V. The device is packaged in an 8-SOIC surface mount configuration with a 100kHz switching frequency.

The MC33063AMDREP is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator topology.

Substiute Parts

MC33063AMDREP

Texas InstrumentsIn Stock: 22846MC33063AMDREP Datasheet

Current PartRFQ

MC33063AQDRQ1

Texas InstrumentsIn Stock: 20152MC33063AQDRQ1 Datasheet

DirectRFQ

MC33063AVDR2G

onsemiIn Stock: 2695MC33063AVDR2G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MC33063AMDREP are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution validity:

Critical Matching Parameters:

• Function: Step-Up, Step-Down capability
• Output Configuration: Positive or Negative
• Topology: Buck, Boost
• Output Type: Adjustable
• Number of Outputs: 1
• Voltage - Input Range: 3V to 40V
• Voltage - Output Range: 1.25V to 40V (Switch)
• Current - Output: 1.5A (Switch)
• Frequency - Switching: 100kHz
• Synchronous Rectifier: No
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The identified substitute parts maintain full electrical and mechanical compatibility with the original MC33063AMDREP specification. Differences in operating temperature range and product status (active vs. obsolete) do not affect functional substitution capability.

Parameter Comparison

Engineering Selection Recommendations

MC33063AQDRQ1 (Texas Instruments)

The MC33063AQDRQ1 is an active product from Texas Instruments with identical electrical specifications to the MC33063AMDREP. This part carries AEC-Q100 automotive qualification and operates across an extended temperature range of -40°C to 125°C, compared to the original -40°C to 85°C specification. The extended temperature capability provides additional margin for demanding thermal environments. This part is recommended as the primary substitute for new designs and ongoing production requiring Texas Instruments sourcing.

MC33063AVDR2G (onsemi)

The MC33063AVDR2G is an active product from onsemi with identical electrical specifications to the MC33063AMDREP. This part operates across an extended temperature range of -40°C to 125°C. The onsemi variant provides an alternative sourcing option with equivalent functional performance and improved temperature operating range. This part is recommended when onsemi supply chain availability or pricing is advantageous.

Both substitute parts maintain full compatibility with existing circuit designs and PCB layouts utilizing the MC33063AMDREP, with no modifications required to external component values or board topology.

Frequently Asked Questions (FAQ)

Q: Can MC33063AQDRQ1 or MC33063AVDR2G be used as direct replacements for MC33063AMDREP?

A: Yes. Both substitute parts maintain identical electrical and mechanical specifications, including input voltage range (3V to 40V), output voltage range (1.25V to 40V), output current (1.5A), switching frequency (100kHz), package type (8-SOIC), and all functional characteristics. No circuit modifications are required.

Q: What is the difference between the three parts?

A: The MC33063AMDREP is obsolete. The MC33063AQDRQ1 (Texas Instruments) and MC33063AVDR2G (onsemi) are active products with extended operating temperature ranges (-40°C to 125°C versus -40°C to 85°C). The MC33063AQDRQ1 includes AEC-Q100 automotive qualification.

Q: Are there any package or pinout differences?

A: No. All three parts use the identical 8-SOIC (0.154", 3.90mm Width) package with the same pinout. PCB layouts and footprints are fully compatible without modification.

Q: Which substitute should I select for new designs?

A: Selection depends on sourcing requirements and application environment. For automotive or extended temperature applications, the MC33063AQDRQ1 is recommended. For general industrial applications, either part is suitable based on supply chain availability and cost considerations.

Q: Are both substitutes RoHS compliant?

A: Yes. Both MC33063AQDRQ1 and MC33063AVDR2G are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original MC33063AMDREP specification.