AP34063S8G-13 Equivalent & Substitute Parts

Part Overview

The AP34063S8G-13 is a Buck, Boost Switching Regulator IC manufactured by Diodes Incorporated, designed for positive or negative adjustable output applications. This component operates with an input voltage range of 3V to 40V and delivers 1.6A switch current at a fixed 1.25V minimum output with adjustable maximum output to 40V. The device is currently classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

AP34063S8G-13

Diodes IncorporatedIn Stock: 80452AP34063S8G-13 Datasheet

Current PartRFQ

AZ34063UMTR-G1

Diodes IncorporatedIn Stock: 134084AZ34063UMTR-G1 Datasheet

MFR RecommendedRFQ

MC33063AQDRQ1

Texas InstrumentsIn Stock: 20152MC33063AQDRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP34063S8G-13 is determined by the following critical parameters:

Functional Equivalence: Buck-Boost topology with positive or negative adjustable output configuration and single output.

Electrical Compatibility: Input voltage range (minimum 3V, maximum 40V or higher), output voltage range (minimum 1.25V, maximum 40V or higher), and output current capability (1.6A or higher).

Package Compatibility: 8-SOIC (0.154", 3.90mm Width) surface mount package.

Electrical Characteristics: Switching frequency, synchronous rectifier capability, and temperature operating range.

The substitute parts identified—AZ34063UMTR-G1 and MC33063AQDRQ1—meet these core substitution criteria with active product status and maintained electrical specifications within acceptable tolerances.

Parameter Comparison

Engineering Selection Recommendations

AZ34063UMTR-G1 is an active equivalent from Diodes Incorporated with maintained functional topology and package compatibility. This substitute operates within the same input voltage range minimum (3V) but with a reduced maximum input voltage of 36V compared to the original 40V specification. Output current is rated at 1.5A, which is 0.1A lower than the original part. The operating temperature range is -40°C to 85°C, narrower than the original 0°C to 105°C specification. This part is suitable for applications where the 36V maximum input and 1.5A output current specifications are acceptable.

MC33063AQDRQ1 is an active equivalent from Texas Instruments with identical functional topology and package compatibility. This substitute maintains the full 40V input and output voltage specifications of the original part. Output current is rated at 1.5A. The operating temperature range extends to -40°C to 125°C, providing broader temperature coverage than the original specification. This part includes AEC-Q100 automotive qualification and carries Moisture Sensitivity Level 1 (unlimited), indicating superior moisture handling compared to the original MSL 3 rating. This substitute is recommended for applications requiring extended temperature operation or automotive-grade reliability.

Both substitutes are ROHS3 compliant and maintain the 8-SOIC package footprint, ensuring direct PCB compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can AZ34063UMTR-G1 be used in applications requiring 40V input operation?

A: No. The AZ34063UMTR-G1 has a maximum input voltage rating of 36V, compared to the original AP34063S8G-13 specification of 40V. Applications requiring the full 40V input range must use MC33063AQDRQ1 or verify that the design operates within the 36V limit.

Q: What is the impact of the 1.5A output current rating on substitute parts compared to the original 1.6A?

A: Both substitute parts are rated for 1.5A output current, which is 0.1A lower than the original 1.6A specification. Applications must verify that the load current requirement does not exceed 1.5A. Designs with marginal current headroom may require circuit redesign or alternative component selection.

Q: Are the substitute parts pin-compatible with the original AP34063S8G-13?

A: Yes. Both AZ34063UMTR-G1 and MC33063AQDRQ1 use the 8-SOIC (0.154", 3.90mm Width) package with identical pinout, enabling direct PCB footprint compatibility without layout modifications.

Q: Which substitute part is recommended for automotive applications?

A: MC33063AQDRQ1 is qualified to AEC-Q100 automotive standards and carries Moisture Sensitivity Level 1 (unlimited), making it the appropriate choice for automotive-grade designs. AZ34063UMTR-G1 does not carry automotive qualification.

Q: How do the operating temperature ranges affect part selection?

A: The original AP34063S8G-13 operates from 0°C to 105°C. AZ34063UMTR-G1 operates from -40°C to 85°C, providing lower temperature capability but reduced upper temperature limit. MC33063AQDRQ1 operates from -40°C to 125°C, providing both extended lower and upper temperature coverage. Applications requiring operation above 85°C must use MC33063AQDRQ1.

Q: What is the significance of Moisture Sensitivity Level differences between the parts?

A: The original AP34063S8G-13 and AZ34063UMTR-G1 carry MSL 3 (168 hours), requiring controlled moisture exposure during storage and handling. MC33063AQDRQ1 carries MSL 1 (unlimited), indicating no moisture sensitivity restrictions. Applications with extended storage periods or high-humidity environments benefit from the MSL 1 rating of MC33063AQDRQ1.