TC4427EPAG Equivalent & Substitute Parts

Part Overview

The TC4427EPAG is a low-side gate driver IC manufactured by Microchip Technology, designed to drive N-Channel and P-Channel MOSFETs in power management applications. This device operates with a supply voltage range of 4.5V to 18V and delivers peak output currents of 1.5A for both source and sink configurations. The TC4427EPAG is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity.

Substiute Parts

TC4427EPAG

Microchip TechnologyIn Stock: 957TC4427EPAG Datasheet

Current PartRFQ

MIC4424YN

Microchip TechnologyIn Stock: 5117MIC4424YN Datasheet

MFR RecommendedRFQ

IR4427PBF

International RectifierIn Stock: 3317IR4427PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC4427EPAG is determined by the following critical parameters:

• Driven Configuration: Low-Side (must match)
• Number of Drivers: 2 (must match)
• Input Type: Non-Inverting (must match)
• Package / Case: 8-DIP (0.300", 7.62mm) (must match)
• Mounting Type: Through Hole (must match)
• Gate Type: N-Channel and/or P-Channel MOSFET capability (must be compatible)

The identified substitute parts maintain these core functional and physical characteristics. Variations in supply voltage range, output current capability, rise/fall time, and operating temperature represent performance enhancements or extensions that do not prevent substitution in applications designed within the original TC4427EPAG specifications.

Parameter Comparison

Engineering Selection Recommendations

Both MIC4424YN and IR4427PBF are active products suitable for replacing the obsolete TC4427EPAG in new designs and production applications.

MIC4424YN is a Microchip Technology product maintaining the same manufacturer lineage as the original part. It provides identical supply voltage and logic voltage specifications, with enhanced output current capability (3A source and sink versus 1.5A). The extended operating temperature range to 150°C (TJ) and ROHS3 compliance support long-term design continuity.

IR4427PBF is an International Rectifier product offering extended supply voltage range (6V to 20V) and superior rise/fall time performance (15ns/10ns). Output current capability exceeds the original specification asymmetrically (2.3A source, 3.3A sink). The extended operating temperature range to 150°C (TJ) provides thermal margin for demanding applications. Gate type compatibility includes IGBT in addition to N-Channel MOSFET.

Both substitutes maintain the critical functional parameters: low-side configuration, dual independent drivers, non-inverting input logic, and 8-DIP through-hole package. Selection between these options depends on application-specific requirements for output current, switching speed, and supply voltage range.

Frequently Asked Questions (FAQ)

Q: Can MIC4424YN or IR4427PBF be used as direct replacements for TC4427EPAG without PCB modifications?

A: Yes. Both substitute parts maintain identical package geometry (8-DIP, 0.300" spacing) and through-hole mounting configuration. Pin-to-pin compatibility is preserved for low-side gate driver functionality.

Q: What are the key differences between MIC4424YN and IR4427PBF?

A: MIC4424YN maintains exact voltage specifications of the original TC4427EPAG (4.5V to 18V supply) with symmetrical output current (3A source and sink). IR4427PBF extends supply voltage range to 6V to 20V with asymmetrical output current (2.3A source, 3.3A sink) and faster switching times (15ns/10ns rise/fall).

Q: Are there temperature rating considerations when substituting?

A: The TC4427EPAG operates to 85°C (TA). Both MIC4424YN and IR4427PBF extend the operating range to 150°C (TJ), providing thermal margin. Applications operating near the original 85°C limit will benefit from this extended specification.

Q: Does the higher output current of MIC4424YN and IR4427PBF affect circuit design?

A: Higher output current capability does not require circuit modifications. Applications designed for 1.5A output will operate within the specifications of both substitutes. Enhanced current capability provides design margin for faster switching or lower impedance gate drive.

Q: Are both substitutes RoHS compliant?

A: MIC4424YN carries ROHS3 compliance matching the original TC4427EPAG. IR4427PBF RoHS status is not specified in the provided data.

Q: Which substitute is recommended for new designs?

A: Selection depends on application requirements. For designs requiring exact voltage specification match and symmetrical output current, MIC4424YN is appropriate. For applications benefiting from extended voltage range and faster switching performance, IR4427PBF is suitable. Both are active products with established supply chains.