TC4423AVOA Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The TC4423AVOA is a low-side gate driver IC manufactured by Microchip Technology, designed for driving N-Channel and P-Channel MOSFETs in power management applications. This inverting gate driver operates across a 4.5V to 18V supply range with peak output currents of 4.5A (source and sink), housed in an 8-SOIC surface mount package. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are necessary when the primary part number TC4423AVOA (Tube packaging) experiences supply constraints, when alternative packaging formats (Tape & Reel) are preferred for high-volume manufacturing, or when design requirements permit functional alternatives from other manufacturers that meet the same electrical and mechanical specifications.

Substiute Parts

TC4423AVOA

Microchip TechnologyIn Stock: 4216TC4423AVOA Datasheet

Current PartRFQ

TC4423AVOA713

Microchip TechnologyIn Stock: 93533TC4423AVOA713 Datasheet

DirectRFQ

MIC4123YME

Microchip TechnologyIn Stock: 7996MIC4123YME Datasheet

MFR RecommendedRFQ

IR4426SPBF

Infineon TechnologiesIn Stock: 2605IR4426SPBF Datasheet

MFR RecommendedRFQ

IR4426STRPBF

Infineon TechnologiesIn Stock: 20720IR4426STRPBF Datasheet

MFR RecommendedRFQ

MAX626CSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2864MAX626CSA+T Datasheet

MFR RecommendedRFQ

MAX626ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2070MAX626ESA+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC4423AVOA is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Driven Configuration: Low-Side
• Channel Type: Independent
• Number of Drivers: 2
• Input Type: Inverting
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Secondary Compatibility Parameters:

• Voltage - Supply: Must encompass or match 4.5V ~ 18V range
• Current - Peak Output: Must meet or exceed 4.5A (source and sink)
• Logic Voltage - VIL, VIH: Must be compatible with 0.8V, 2.4V
• Operating Temperature: Must support -40°C ~ 150°C (TJ) or equivalent industrial range
• Gate Type: Must support N-Channel and P-Channel MOSFET or equivalent semiconductor types

Substitute parts are grouped into three categories:

Category 1 - Direct Equivalent (Same Manufacturer, Different Packaging): TC4423AVOA713 is an identical electrical specification part from Microchip Technology with Tape & Reel packaging instead of Tube.

Category 2 - Functional Equivalent (Same Manufacturer, Enhanced Specifications): MIC4123YME from Microchip Technology meets all primary criteria with enhanced thermal performance (exposed pad variant) but with reduced peak output current (3A vs 4.5A) and lower maximum operating temperature (125°C vs 150°C).

Category 3 - Cross-Manufacturer Alternatives (Different Manufacturer, Compatible Specifications): IR4426SPBF and IR4426STRPBF from Infineon Technologies, and MAX626CSA+T and MAX626ESA+ from Analog Devices Inc./Maxim Integrated meet the primary substitution criteria with variations in peak output current, rise/fall times, and operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

TC4423AVOA713 (Microchip Technology, Tape & Reel): This is the preferred direct substitute when supply of TC4423AVOA (Tube) is constrained. Electrical specifications are identical across all parameters. The only difference is packaging format (Tape & Reel vs. Tube), making this suitable for high-volume manufacturing environments. Product status is Active with full RoHS3 compliance and MSL 1 rating. No design changes are required.

MIC4123YME (Microchip Technology, Tube): This part is suitable as a substitute when thermal performance is a design priority due to its exposed pad variant. However, peak output current is reduced to 3A (vs. 4.5A), and maximum junction temperature is limited to 125°C (vs. 150°C). This part is appropriate only for applications where the lower current rating and temperature range are acceptable. Product status is Active with RoHS3 compliance and MSL 2 rating.

IR4426STRPBF (Infineon Technologies, Cut Tape & Digi-Reel®): This cross-manufacturer substitute is suitable for applications where Infineon supply chain preference exists. Peak output current is reduced to 2.3A source / 3.3A sink (asymmetrical vs. 4.5A symmetrical). Rise/fall times are 15ns / 10ns (vs. 12ns / 12ns). Operating temperature range matches the original part (-40°C ~ 150°C). Product status is Active with RoHS3 compliance and MSL 2 rating. Gate type supports IGBT and N-Channel MOSFET (vs. N-Channel and P-Channel MOSFET).

IR4426SPBF (Infineon Technologies, Tube): This part has identical electrical specifications to IR4426STRPBF but carries Obsolete product status. Substitution is not recommended for new designs due to end-of-life status, despite current inventory availability.

MAX626ESA+ (Analog Devices Inc./Maxim Integrated, Tube): This cross-manufacturer substitute is suitable when Maxim supply chain preference exists. Peak output current is significantly reduced to 2A (vs. 4.5A). Rise/fall times are 25ns / 20ns (vs. 12ns / 12ns), indicating slower switching performance. Operating temperature range is -40°C ~ 85°C (TA), which is narrower than the original part. Product status is Active with RoHS3 compliance and MSL 1 rating. This part is appropriate only for lower-speed applications with reduced current requirements.

MAX626CSA+T (Analog Devices Inc./Maxim Integrated, Cut Tape & Digi-Reel®): This part has identical electrical specifications to MAX626ESA+ but with a narrower operating temperature range (0°C ~ 70°C TA). Substitution is not recommended for industrial temperature range applications.

Frequently Asked Questions (FAQ)

Q: Can TC4423AVOA713 be used as a direct replacement for TC4423AVOA?

A: Yes. TC4423AVOA713 is electrically and functionally identical to TC4423AVOA. The only difference is packaging format: TC4423AVOA is supplied in Tube packaging, while TC4423AVOA713 is supplied in Tape & Reel format. Both parts have identical electrical specifications, operating ranges, and compliance certifications. No circuit modifications are required.

Q: What are the limitations of MIC4123YME as a substitute?

A: MIC4123YME has two key limitations compared to TC4423AVOA. First, peak output current is reduced from 4.5A to 3A for both source and sink. Second, maximum junction temperature is limited to 125°C versus 150°C for the original part. The part is suitable only for applications where these reduced specifications are acceptable. The exposed pad variant provides improved thermal performance, which may offset the lower temperature rating in some designs.

Q: Why do the Infineon IR4426 parts have asymmetrical output currents?

A: The IR4426SPBF and IR4426STRPBF have peak output currents of 2.3A (source) and 3.3A (sink), which differ from the symmetrical 4.5A specification of TC4423AVOA. This asymmetry is a design characteristic of the IR4426 family and reflects different internal circuit topologies. Applications requiring symmetrical current capability should not use these parts as substitutes.

Q: Are the Maxim MAX626 parts suitable for high-speed switching applications?

A: No. The MAX626ESA+ and MAX626CSA+T have rise/fall times of 25ns / 20ns, compared to 12ns / 12ns for TC4423AVOA. This slower switching performance makes them unsuitable for applications requiring fast gate drive transitions. Additionally, peak output current is limited to 2A, which is significantly lower than the original part's 4.5A specification.

Q: What is the significance of the exposed pad on MIC4123YME?

A: The exposed pad (8-SOIC-EP variant) provides a thermal connection to the PCB, improving heat dissipation. This is beneficial for applications with high power dissipation or elevated ambient temperatures. However, the exposed pad requires proper PCB layout with thermal vias to be effective. The part's maximum junction temperature (125°C) remains lower than TC4423AVOA (150°C).

Q: Can IR4426SPBF be used in new designs?

A: IR4426SPBF is not recommended for new designs because it carries Obsolete product status. Although current inventory is available, future supply cannot be guaranteed. IR4426STRPBF (Active status) should be used instead if Infineon substitution is required.

Q: What is the difference between operating temperature ranges specified as (TJ) versus (TA)?

A: (TJ) refers to junction temperature, which is the temperature of the semiconductor die itself. (TA) refers to ambient temperature, which is the surrounding air temperature. Junction temperature is typically higher than ambient temperature due to internal power dissipation. TC4423AVOA specifies -40°C ~ 150°C (TJ), while MAX626ESA+ specifies -40°C ~ 85°C (TA). These ranges are not directly comparable without accounting for thermal resistance and power dissipation in the specific application.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed in this reference—TC4423AVOA, TC4423AVOA713, MIC4123YME, IR4426SPBF, IR4426STRPBF, MAX626CSA+T, and MAX626ESA+—are RoHS3 compliant. All parts also have REACH Unaffected status and are classified under ECCN EAR99 and HTSUS 8542.39.0001.

Q: What packaging formats are available for each substitute?

A: TC4423AVOA is supplied in Tube; TC4423AVOA713 in Tape & Reel; MIC4123YME in Tube; IR4426SPBF in Tube; IR4426STRPBF in Cut Tape & Digi-Reel®; MAX626CSA+T in Cut Tape & Digi-Reel®; and MAX626ESA+ in Tube. Packaging selection depends on manufacturing volume and assembly equipment compatibility.