MAX4427EPA Equivalent & Substitute Parts

Part Overview

The MAX4427EPA is a low-side gate driver IC manufactured by Analog Devices Inc./Maxim Integrated, designed for driving N-Channel and P-Channel MOSFETs in power management applications. This 8-PDIP through-hole component operates with a supply voltage range of 4.5V to 18V and delivers 1.5A peak output current for both source and sink configurations. The MAX4427EPA is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements.

Substiute Parts

MAX4427EPA

Analog Devices Inc./Maxim IntegratedIn Stock: 4169MAX4427EPA Datasheet

Current PartRFQ

MAX4427EPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1220MAX4427EPA+ Datasheet

DirectRFQ

IR4427PBF

International RectifierIn Stock: 3317IR4427PBF Datasheet

MFR RecommendedRFQ

MIC4427YN

Microchip TechnologyIn Stock: 1327MIC4427YN Datasheet

MFR RecommendedRFQ

TC4427EPA

Microchip TechnologyIn Stock: 9172TC4427EPA Datasheet

MFR RecommendedRFQ

TC4427VPA

Microchip TechnologyIn Stock: 2214TC4427VPA Datasheet

MFR RecommendedRFQ

UCC37324P

Texas InstrumentsIn Stock: 1195UCC37324P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4427EPA is determined by the following critical parameters:

• Driven Configuration: Low-Side (all substitutes must match)
• Channel Type: Independent (all substitutes must match)
• Number of Drivers: 2 (all substitutes must match)
• Package / Case: 8-DIP (0.300", 7.62mm) (all substitutes must match)
• Mounting Type: Through Hole (all substitutes must match)
• Input Type: Non-Inverting (all substitutes must match)
• Gate Type: N-Channel, P-Channel MOSFET or IGBT compatibility
• Voltage - Supply: 4.5V ~ 18V minimum range coverage
• Logic Voltage - VIL, VIH: Compatible threshold levels
• Current - Peak Output: Equal or greater than 1.5A source and sink
• Rise / Fall Time: Performance within acceptable switching speed range
• Operating Temperature: Minimum -40°C to maximum 85°C coverage

All identified substitutes meet the mandatory package, configuration, and functional requirements. Variations in supply voltage range, output current capability, and temperature rating are noted where they exceed the original specification.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the MAX4427EPA, the following selection criteria apply based on product status and compliance requirements:

MAX4427EPA+ is the direct successor from Analog Devices, maintaining identical electrical specifications while offering active product status and ROHS3 compliance. This represents the primary replacement path for existing MAX4427EPA designs.

TC4427EPA and TC4427VPA from Microchip Technology provide functionally equivalent alternatives with ROHS3 compliance and active product status. TC4427VPA extends the operating temperature range to 125°C, suitable for applications requiring enhanced thermal performance. Both maintain the core electrical parameters of the original device.

MIC4427YN from Microchip Technology offers equivalent performance with extended operating temperature range to 150°C and ROHS3 compliance, providing additional thermal margin for demanding applications.

IR4427PBF from International Rectifier delivers enhanced output current capability (2.3A source, 3.3A sink) and extended supply voltage range (6V ~ 20V), with operating temperature to 150°C. This option suits applications requiring higher drive current or broader voltage operation.

UCC37324P from Texas Instruments provides the highest output current capability (4A source and sink) and widest operating temperature range (-55°C ~ 150°C), classified as Last Time Buy. This option is suitable for high-performance applications but subject to end-of-life considerations.

Frequently Asked Questions (FAQ)

Q: Can MAX4427EPA be directly replaced with MAX4427EPA+?

A: Yes. MAX4427EPA+ is the active production equivalent from the same manufacturer with identical electrical specifications, package, and pinout. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What are the key differences between Microchip TC4427 variants and the original MAX4427EPA?

A: TC4427EPA and TC4427VPA maintain identical core electrical parameters (supply voltage, output current, logic thresholds) and package configuration. TC4427VPA extends the operating temperature range to 125°C compared to 85°C for TC4427EPA. Both are ROHS3 compliant and in active production.

Q: Is IR4427PBF a suitable replacement for MAX4427EPA?

A: IR4427PBF is functionally compatible with identical package, configuration, and non-inverting input type. It provides enhanced specifications including higher output current (2.3A/3.3A vs. 1.5A/1.5A), extended supply voltage range (6V ~ 20V vs. 4.5V ~ 18V), and higher operating temperature (150°C vs. 85°C). Applications must verify compatibility with the higher VIH threshold (2.7V vs. 2.4V).

Q: What is the difference between operating temperature specifications (TA vs. TJ)?

A: TA denotes ambient temperature measurement, while TJ denotes junction temperature measurement. Specifications using TJ typically allow higher ambient operating conditions due to internal thermal considerations. Verify application thermal requirements when selecting between TA and TJ rated devices.

Q: Can UCC37324P replace MAX4427EPA in all applications?

A: UCC37324P is functionally compatible with identical package and configuration. It provides superior output current (4A vs. 1.5A) and extended temperature range (-55°C ~ 150°C). However, UCC37324P is classified as Last Time Buy, indicating discontinued production. Applications should evaluate long-term supply availability before selection.

Q: Are all substitute parts available in the same through-hole 8-DIP package?

A: Yes. All identified substitutes use the 8-DIP (0.300", 7.62mm) through-hole package with identical pinout and mounting configuration, enabling direct board-level replacement without layout modifications.

Q: What compliance certifications apply to substitute selection?

A: MAX4427EPA is RoHS non-compliant. All active production substitutes (MAX4427EPA+, TC4427EPA, TC4427VPA, MIC4427YN, IR4427PBF, UCC37324P) are ROHS3 compliant. Applications subject to RoHS requirements must select from compliant alternatives. All parts are REACH unaffected and classified as EAR99 for export control purposes.