AP34063S8L-13 Equivalent & Substitute Parts

Part Overview

The AP34063S8L-13 is a Buck, Boost Switching Regulator IC manufactured by Diodes Incorporated, designed for multi-configuration adjustable power management applications. This device supports positive or negative output configurations with a single adjustable output and 1.6A switch current capability. The part is classified as Obsolete, making identification of active equivalent alternatives essential for new designs and ongoing production support.

Substiute Parts

AP34063S8L-13

Diodes IncorporatedIn Stock: 7394AP34063S8L-13 Datasheet

Current PartRFQ

MC33063AQDRQ1

Texas InstrumentsIn Stock: 20152MC33063AQDRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP34063S8L-13 is determined by strict alignment of the following electrical and mechanical parameters:

• Package Compatibility: Both parts must use 8-SOIC (0.154", 3.90mm Width) surface mount packaging to ensure PCB layout compatibility without redesign.
• Functional Topology: Both parts must support Buck and Boost switching regulator configurations with positive or negative adjustable output capability.
• Output Configuration: Single adjustable output with 1.25V minimum output voltage.
• Input Voltage Range: 3V to 40V input voltage support.
• Switching Frequency: 100kHz switching frequency for consistent circuit behavior.
• Output Current: The substitute part must support at least 1.5A switch current; the AP34063S8L-13 specifies 1.6A, establishing a maximum acceptable tolerance.

The MC33063AQDRQ1 from Texas Instruments meets all substitution criteria and is classified as Active product status, providing long-term availability for production applications.

Parameter Comparison

Engineering Selection Recommendations

The MC33063AQDRQ1 is the direct substitute for the AP34063S8L-13 based on the following engineering criteria:

Product Status: The AP34063S8L-13 is Obsolete. The MC33063AQDRQ1 is Active, ensuring continued availability, technical support, and supply chain stability for production applications.

Compliance & Certification: Both parts are ROHS3 Compliant and REACH Unaffected. The MC33063AQDRQ1 carries AEC-Q100 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

Electrical Equivalence: All critical electrical parameters align identically: input voltage range (3V–40V), output voltage range (1.25V–40V), switching frequency (100kHz), and functional topology (Buck/Boost with adjustable positive or negative output). The output current specification of 1.5A on the MC33063AQDRQ1 is within acceptable tolerance of the 1.6A specification on the AP34063S8L-13.

Mechanical Compatibility: Both devices use identical 8-SOIC (0.154", 3.90mm Width) surface mount packaging, eliminating PCB layout modifications.

Temperature Performance: The MC33063AQDRQ1 extends the operating temperature range to -40°C ~ 125°C (TA), providing superior performance margin compared to the AP34063S8L-13 specification of 0°C ~ 105°C (TJ).

Frequently Asked Questions (FAQ)

Q: Can the MC33063AQDRQ1 directly replace the AP34063S8L-13 without PCB modifications?

A: Yes. Both devices use identical 8-SOIC (0.154", 3.90mm Width) surface mount packaging. Pin-to-pin compatibility and electrical characteristics are equivalent, eliminating the need for PCB layout changes.

Q: What is the significance of the 1.5A versus 1.6A output current difference?

A: The MC33063AQDRQ1 specifies 1.5A switch current, which is 93.75% of the AP34063S8L-13 specification of 1.6A. This difference is within acceptable engineering tolerance for most applications. Circuit designs operating at or near the 1.6A limit should be evaluated to confirm the 1.5A specification remains adequate.

Q: Why does the MC33063AQDRQ1 have a wider operating temperature range?

A: The MC33063AQDRQ1 is specified with -40°C ~ 125°C (TA) operating temperature, compared to 0°C ~ 105°C (TJ) for the AP34063S8L-13. This extended range reflects the automotive-grade qualification (AEC-Q100) of the Texas Instruments device, providing additional thermal margin for demanding applications.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 Compliant and REACH Unaffected. The MC33063AQDRQ1 includes AEC-Q100 automotive qualification, which the AP34063S8L-13 does not specify. This additional certification does not restrict use in non-automotive applications.

Q: What is the inventory status of these parts?

A: The AP34063S8L-13 has 7,297 pieces in stock but is classified as Obsolete. The MC33063AQDRQ1 has 20,100 pieces in stock and is classified as Active, ensuring long-term availability for production and future orders.

Q: Are the switching frequencies identical?

A: Yes. Both the AP34063S8L-13 and MC33063AQDRQ1 operate at 100kHz switching frequency, ensuring consistent circuit behavior and filter design compatibility.