MC33063ADE4 Equivalent & Substitute Parts

Part Overview

The MC33063ADE4 is a buck-boost switching regulator IC manufactured by Texas Instruments, designed for positive or negative adjustable output applications. This component operates with a 1.5A switch current capacity and supports input voltages from 3V to 40V with adjustable output from 1.25V to 40V. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain functional and electrical compatibility for ongoing production and repair applications.

Substiute Parts

MC33063ADE4

Texas InstrumentsIn Stock: 896MC33063ADE4 Datasheet

Current PartRFQ

MC33063AD

onsemiIn Stock: 5057MC33063AD Datasheet

MFR RecommendedRFQ

MC33063AVDG

onsemiIn Stock: 1926MC33063AVDG Datasheet

DirectRFQ

MC34063ABD-TR

STMicroelectronicsIn Stock: 55320MC34063ABD-TR Datasheet

DirectRFQ

NCV33063AVDR2G

onsemiIn Stock: 16292NCV33063AVDR2G Datasheet

UpgradeRFQ

SC33063ADR2G

onsemiIn Stock: 3399SC33063ADR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MC33063ADE4 is determined by the following critical parameters: package type (8-SOIC form factor), input voltage range (3V to 40V), output current capability (1.5A switch), adjustable output configuration (positive or negative), and buck-boost topology. All identified substitute parts maintain the 8-SOIC package and support the same input voltage range and output current specifications. Differences in switching frequency (100kHz vs. 33kHz) and maximum operating temperature (-40°C to 85°C vs. -40°C to 125°C) are noted where applicable but do not prevent functional substitution when circuit design accommodates these variations. All substitute parts comply with ROHS3 and maintain MSL 1 classification.

Parameter Comparison

Engineering Selection Recommendations

MC33063AVDG (onsemi) is the primary direct substitute, offering active product status with identical electrical specifications including 100kHz switching frequency and extended operating temperature range (-40°C to 125°C). This part provides superior long-term availability and supply chain stability.

NCV33063AVDR2G (onsemi) serves as an upgrade alternative with active status and extended temperature range (-40°C to 125°C), though switching frequency is reduced to 33kHz. This part is suitable for applications where lower switching frequency is acceptable.

SC33063ADR2G (onsemi) is available as an active MFR-recommended substitute with identical specifications to the original part, including 33kHz switching frequency and standard operating temperature range (-40°C to 85°C).

MC34063ABD-TR (STMicroelectronics) is an active alternative with full compatibility, though maximum output voltage is specified at 38V rather than 40V. Switching frequency is 33kHz. This part offers high inventory availability (55,300 units).

MC33063AD (onsemi) is classified as obsolete and should be avoided for new designs despite lower cost, as it offers limited long-term supply assurance.

All substitute parts maintain ROHS3 compliance and MSL 1 classification, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can MC33063AVDG directly replace MC33063ADE4 without circuit modification?

A: Yes. MC33063AVDG maintains identical package (8-SOIC), input voltage range (3V to 40V), output current (1.5A), and adjustable output configuration (1.25V to 40V). The extended operating temperature range (-40°C to 125°C) provides additional margin. No circuit modification is required.

Q: What is the impact of switching frequency differences between 100kHz and 33kHz?

A: Switching frequency affects filter component sizing and EMI characteristics. The MC33063ADE4 operates at 100kHz, while MC34063ABD-TR, NCV33063AVDR2G, and SC33063ADR2G operate at 33kHz. Lower switching frequency may require larger filter inductors and capacitors. Circuit redesign may be necessary if the original design was optimized for 100kHz operation.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in 8-SOIC package. Packaging formats (Tube, Cut Tape, Tape & Reel) vary by manufacturer and distributor. Verify packaging availability with your supplier for production requirements.

Q: Which substitute part offers the best long-term availability?

A: MC33063AVDG (onsemi) and MC34063ABD-TR (STMicroelectronics) both carry active product status. MC34063ABD-TR shows the highest current inventory (55,300 units). For extended temperature applications, NCV33063AVDR2G is recommended.

Q: Is MC33063AD suitable for new production?

A: No. MC33063AD is classified as obsolete. While currently in stock (5,017 units), obsolete status indicates no future manufacturing or support. New designs should use active alternatives such as MC33063AVDG or MC34063ABD-TR.

Q: Do all substitute parts comply with RoHS and REACH requirements?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the original MC33063ADE4 specifications.