TC427CPAG Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The TC427CPAG 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 component features non-inverting logic, independent dual-channel configuration, and operates across a 4.5V to 18V supply voltage range with 1.5A peak output current capability.

The TC427CPAG is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement. Substitute parts must maintain functional compatibility through matching driven configuration, channel type, gate type support, and core electrical parameters while meeting modern product status requirements.

Substiute Parts

TC427CPAG

Microchip TechnologyIn Stock: 1180TC427CPAG Datasheet

Current PartRFQ

MIC4424YN

Microchip TechnologyIn Stock: 5117MIC4424YN Datasheet

MFR RecommendedRFQ

TC427EPA

Microchip TechnologyIn Stock: 1872TC427EPA Datasheet

MFR RecommendedRFQ

IR4427PBF

International RectifierIn Stock: 3317IR4427PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC427CPAG is determined by strict alignment with the following core parameters:

Primary Compatibility Criteria:

• Driven configuration must be low-side
• Channel type must support independent dual-channel operation
• Gate type must support N-Channel and P-Channel MOSFET switching
• Input logic must be non-inverting
• Package must be 8-DIP (0.300", 7.62mm) through-hole
• Supply voltage range must encompass or exceed 4.5V ~ 18V
• Logic voltage thresholds (VIL, VIH) must be compatible with 0.8V, 2.4V specification

Secondary Compatibility Criteria:

• Peak output current capability (source and sink) must meet or exceed application requirements
• Rise and fall time specifications must support target switching frequency
• Operating temperature range must accommodate application environment
• RoHS and MSL compliance must meet procurement standards

Three substitute parts meet these criteria with varying performance enhancements and temperature ratings.

Parameter Comparison

Engineering Selection Recommendations

TC427EPA is the direct functional equivalent to TC427CPAG. Both parts share identical electrical specifications including 1.5A peak output current, 30ns rise and fall times, and 4.5V to 18V supply voltage range. TC427EPA is active in production with ROHS3 compliance and MSL-1 rating. The primary difference is an extended operating temperature range of -40°C to 85°C compared to the original 0°C to 70°C specification. Selection of TC427EPA is appropriate for applications requiring direct pin-compatible replacement with improved temperature performance and active product status.

MIC4424YN provides enhanced output current capability at 3A source and sink compared to 1.5A in the original specification. This part maintains identical supply voltage range, logic thresholds, and non-inverting input configuration. MIC4424YN operates across -40°C to 150°C junction temperature with comparable rise and fall times. This substitute is suitable for applications requiring higher gate drive current while maintaining the same package footprint and core functionality.

IR4427PBF from International Rectifier offers the fastest switching performance with 15ns rise time and 10ns fall time. This part supports IGBT and N-Channel MOSFET gate types with asymmetric output current (2.3A source, 3.3A sink). Supply voltage range extends to 20V maximum. IR4427PBF operates across -40°C to 150°C junction temperature. This substitute is appropriate for high-frequency switching applications where faster edge rates provide performance benefits, though gate type support differs slightly from the original specification.

All three substitute parts maintain through-hole 8-DIP packaging, independent dual-channel configuration, and non-inverting logic required for direct circuit compatibility.

Frequently Asked Questions (FAQ)

Q: Can TC427EPA directly replace TC427CPAG in existing designs?

A: Yes. TC427EPA is functionally equivalent with identical electrical specifications and 8-DIP package. The extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) provides additional margin for industrial applications. No circuit modifications are required.

Q: What is the primary advantage of MIC4424YN over TC427CPAG?

A: MIC4424YN provides doubled peak output current capability (3A source and sink versus 1.5A). This enables faster gate charging in applications with high-capacitance MOSFET gates or multiple parallel devices. Supply voltage range and logic thresholds remain identical, maintaining circuit compatibility.

Q: When should IR4427PBF be selected instead of direct equivalents?

A: IR4427PBF is selected for high-frequency switching applications where faster edge rates (15ns rise, 10ns fall) reduce switching losses and EMI. The asymmetric output current (2.3A source, 3.3A sink) and extended temperature range support demanding industrial and automotive environments. Gate type support includes IGBT in addition to MOSFETs.

Q: Are all substitute parts ROHS3 compliant?

A: TC427EPA and MIC4424YN are explicitly ROHS3 compliant. IR4427PBF RoHS status is not specified in available documentation. Compliance verification with the component supplier is recommended for applications with mandatory RoHS requirements.

Q: Do substitute parts require PCB layout modifications?

A: No. All substitute parts use identical 8-DIP (0.300", 7.62mm) through-hole packaging. Direct socket replacement is possible without PCB redesign. Pin assignments and functional behavior remain consistent across all listed substitutes.

Q: What is the moisture sensitivity level for substitute parts?

A: TC427EPA and MIC4424YN both carry MSL-1 (Unlimited) rating, identical to TC427CPAG. IR4427PBF moisture sensitivity level is not specified. Standard handling procedures for MSL-1 components apply.

Q: Can these parts be used interchangeably in the same production run?

A: TC427EPA and TC427CPAG are interchangeable due to identical specifications. MIC4424YN and IR4427PBF introduce performance differences (output current and switching speed) that may affect circuit behavior. Design validation is required before mixing substitute parts within a single production batch.