TC4423EPA Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The TC4423EPA is an active 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 and delivers 3A peak output current on both source and sink channels. The device is housed in an 8-PDIP through-hole package and maintains active product status with full RoHS3 compliance. Equivalent and substitute parts are identified when they share the same functional configuration, package type, and electrical operating parameters within acceptable tolerances for gate driver applications.

Substiute Parts

TC4423EPA

Microchip TechnologyIn Stock: 1118TC4423EPA Datasheet

Current PartRFQ

MIC4423YN

Microchip TechnologyIn Stock: 1508MIC4423YN Datasheet

DirectRFQ

TC4423AVPA

Microchip TechnologyIn Stock: 3969TC4423AVPA Datasheet

DirectRFQ

MIC4423ZN

Microchip TechnologyIn Stock: 4496MIC4423ZN Datasheet

MFR RecommendedRFQ

IR4426PBF

International RectifierIn Stock: 28754IR4426PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TC4423EPA are qualified based on the following criteria:

Core Compatibility Requirements:

• Low-side gate driver configuration
• Independent dual-channel architecture
• 8-PDIP through-hole package format
• Inverting input logic
• Operating temperature range of -40°C to 150°C (or subset thereof)
• Supply voltage range of 4.5V to 18V (or subset thereof)
• Peak output current capability of 3A or greater on both source and sink channels
• Logic voltage thresholds compatible with 0.8V VIL and 2.4V VIH (or compatible range)

Acceptable Parameter Variations:

• Rise and fall time specifications may vary within the gate driver performance envelope
• Peak output current may exceed the original specification
• Packaging format (Tube or Bulk) does not affect electrical compatibility
• Compliance certifications (RoHS3, REACH) must be maintained

Parameter Comparison

Engineering Selection Recommendations

MIC4423YN qualifies as a direct substitute with identical electrical specifications to the TC4423EPA. Both devices share the same supply voltage range, logic thresholds, peak output current ratings, and operating temperature range. The MIC4423YN exhibits slightly slower rise and fall times (28ns, 32ns versus 23ns, 25ns) but remains within acceptable gate driver performance parameters. Both parts maintain RoHS3 compliance and active product status.

TC4423AVPA is a higher-performance variant within the TC4423 product family. It delivers increased peak output current (4.5A versus 3A) and faster switching times (12ns rise and fall time). The TC4423AVPA is suitable for applications requiring enhanced drive capability while maintaining the same supply voltage and logic voltage specifications. This part is recommended when higher current delivery or faster switching transitions are required.

MIC4423ZN provides equivalent functionality to the TC4423EPA with identical electrical ratings. The operating temperature range is restricted to 0°C to 150°C, making it unsuitable for applications requiring full -40°C operation. This part is applicable only in systems with minimum operating temperatures at or above 0°C. Rise and fall times match the MIC4423YN specification.

IR4426PBF is a cross-manufacturer substitute from International Rectifier with compatible low-side gate driver architecture. The IR4426PBF operates across a wider supply voltage range (6V to 20V) and supports both IGBT and N-Channel MOSFET gate types. Peak output current is asymmetrical (2.3A source, 3.3A sink), with the source current falling below the TC4423EPA specification. The IR4426PBF is suitable for applications where IGBT driving capability is required and source current requirements do not exceed 2.3A. All parts maintain active product status and appropriate compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can MIC4423YN be used as a direct replacement for TC4423EPA in existing designs?

A: Yes. The MIC4423YN shares identical supply voltage (4.5V to 18V), logic voltage thresholds (0.8V, 2.4V), peak output current (3A, 3A), and operating temperature range (-40°C to 150°C) with the TC4423EPA. The 8-PDIP package and through-hole mounting are identical. Rise and fall time differences (28ns, 32ns versus 23ns, 25ns) do not affect functional compatibility in standard gate driver applications.

Q: When should TC4423AVPA be selected over TC4423EPA?

A: The TC4423AVPA is selected when the application requires higher peak output current (4.5A versus 3A) or faster switching transitions (12ns versus 23ns/25ns). All other electrical parameters remain identical. The TC4423AVPA is a performance upgrade within the same product family.

Q: Is MIC4423ZN suitable for all applications using TC4423EPA?

A: No. The MIC4423ZN operating temperature range is restricted to 0°C to 150°C, compared to the TC4423EPA range of -40°C to 150°C. The MIC4423ZN is suitable only for applications with minimum operating temperatures at or above 0°C. All other electrical specifications are equivalent.

Q: What are the limitations of IR4426PBF as a substitute?

A: The IR4426PBF has asymmetrical peak output current specifications (2.3A source, 3.3A sink), with source current below the TC4423EPA 3A rating. The IR4426PBF is suitable only for applications where source current requirements do not exceed 2.3A. The device supports IGBT driving in addition to MOSFET driving, and operates across a wider supply voltage range (6V to 20V).

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

A: All substitute parts are available in 8-DIP through-hole packages. Packaging format (Tube or Bulk) varies by supplier but does not affect electrical compatibility or pin configuration.

Q: Do all substitute parts maintain the same compliance certifications?

A: All listed substitute parts maintain RoHS3 compliance and active product status. REACH and ECCN classifications are consistent across the Microchip Technology parts. The IR4426PBF maintains EAR99 classification consistent with the original part.