IXDN409SI Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IXDN409SI is a low-side gate driver IC manufactured by IXYS, designed for driving IGBT, N-Channel, and P-Channel MOSFET devices in power management applications. This non-inverting 8-SOIC device operates across a 4.5V to 35V supply voltage range with 9A peak output current capability on both source and sink channels.

The IXDN409SI is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this gate driver topology.

Substiute Parts

IXDN409SI

IXYSIn Stock: 1226IXDN409SI Datasheet

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IXDN609SI

IXYS Integrated Circuits DivisionIn Stock: 6814IXDN609SI Datasheet

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IXDN609SIA

LittelfuseIn Stock: 1631IXDN609SIA Datasheet

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IXDN609SIATR

IXYS Integrated Circuits DivisionIn Stock: 5771IXDN609SIATR Datasheet

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IXDN609SITR

IXYS Integrated Circuits DivisionIn Stock: 8874IXDN609SITR Datasheet

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MIC4422AYM

Microchip TechnologyIn Stock: 888978MIC4422AYM Datasheet

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MIC4422AYM-TR

Microchip TechnologyIn Stock: 7533MIC4422AYM-TR Datasheet

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UCC27322D

Texas InstrumentsIn Stock: 2303UCC27322D Datasheet

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UCC27322DR

Texas InstrumentsIn Stock: 35430UCC27322DR Datasheet

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UCC37322D

Texas InstrumentsIn Stock: 4326UCC37322D Datasheet

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UCC37322DR

Texas InstrumentsIn Stock: 37314UCC37322DR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IXDN409SI are qualified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Driven Configuration: Low-Side (all substitutes match)
• Channel Type: Single channel (all substitutes match)
• Number of Drivers: 1 (all substitutes match)
• Input Type: Non-Inverting (all substitutes match)
• Mounting Type: Surface Mount (all substitutes match)
• Package / Case: 8-SOIC form factor (all substitutes match)
• Current - Peak Output: 9A source and sink capability (all substitutes match)

Secondary Compatibility Parameters:

• Voltage - Supply range compatibility
• Logic Voltage thresholds (VIL, VIH)
• Operating temperature range
• Gate type support (IGBT and MOSFET compatibility)

Substitutes are grouped into two categories based on supply voltage range compatibility:

Group 1 - Full Voltage Range (4.5V ~ 35V): IXDN609SI, IXDN609SIA, IXDN609SIATR, IXDN609SITR. These parts maintain the extended supply voltage range of the original IXDN409SI.

Group 2 - Reduced Voltage Range (4V ~ 18V or 4V ~ 15V): MIC4422AYM, MIC4422AYM-TR, UCC27322D, UCC27322DR, UCC37322D, UCC37322DR. These parts operate within narrower supply voltage specifications and require design verification for applications exceeding their maximum supply voltage.

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitutes - IXDN609 Series (IXDN609SI, IXDN609SIA, IXDN609SIATR, IXDN609SITR):

The IXDN609 series represents the primary substitute family for the obsolete IXDN409SI. All variants maintain the full 4.5V to 35V supply voltage range, identical gate type support (IGBT, N-Channel, P-Channel MOSFET), and equivalent 9A peak output current. All IXDN609 variants carry Active product status and ROHS3 compliance. The IXDN609SI and IXDN609SITR variants include an exposed pad for enhanced thermal performance. Selection between tube and tape & reel packaging variants depends on procurement and assembly requirements.

Secondary Substitutes - Microchip MIC4422 Series (MIC4422AYM, MIC4422AYM-TR):

The MIC4422 series provides functional substitution with reduced supply voltage range (4.5V to 18V). These parts are Active status with ROHS3 compliance and support N-Channel MOSFET gate driving. The MIC4422 series is suitable for applications operating within the 4.5V to 18V supply window. Gate type support is limited to N-Channel MOSFET; IGBT and P-Channel MOSFET compatibility requires design verification.

Tertiary Substitutes - Texas Instruments UCC27322 and UCC37322 Series:

The UCC27322 and UCC37322 series operate within a 4V to 15V supply voltage range, further restricting applicability. UCC27322D and UCC27322DR are Last Time Buy and Active status respectively. UCC37322D and UCC37322DR are Last Time Buy and Active status respectively, with operating temperature limited to 0°C to 70°C. These parts support N-Channel and P-Channel MOSFET gate driving but do not support IGBT applications. Selection of these parts requires confirmation that supply voltage and temperature operating ranges align with application requirements.

Frequently Asked Questions (FAQ)

Q: Can the IXDN609SI directly replace the IXDN409SI without circuit modifications?

A: The IXDN609SI maintains electrical compatibility across all critical parameters: low-side single-channel configuration, 9A peak output current, non-inverting input, and 8-SOIC package. The extended supply voltage range (4.5V to 35V) and operating temperature range (-55°C to 150°C) match the original specification. Direct substitution is supported without circuit modifications.

Q: What is the difference between IXDN609SI and IXDN609SITR?

A: Both parts are electrically identical. The primary difference is packaging: IXDN609SI is supplied in tube packaging, while IXDN609SITR is supplied in cut tape and Digi-Reel format. Selection depends on assembly process requirements and procurement preferences.

Q: Why do some substitutes have reduced supply voltage ranges?

A: The MIC4422 series (4.5V to 18V) and UCC27322/UCC37322 series (4V to 15V) are designed for lower voltage applications. Applications requiring the full 4.5V to 35V range of the IXDN409SI must use the IXDN609 series or verify that operating conditions remain within the reduced voltage specification of alternative parts.

Q: Can the MIC4422 series drive IGBT devices?

A: The MIC4422 series is specified for N-Channel MOSFET gate driving only. IGBT support is not documented. Applications requiring IGBT gate drive capability must use the IXDN609 series or UCC27322/UCC37322 series, which explicitly support IGBT gate types.

Q: What is the significance of the exposed pad variant (IXDN609SITR)?

A: The exposed pad (EP) variant provides an additional thermal connection point on the underside of the 8-SOIC package. This enhances heat dissipation in high-current or high-frequency applications. Selection between standard and exposed pad variants depends on thermal management requirements of the specific application.

Q: Are all substitute parts RoHS3 compliant?

A: All active substitute parts listed (IXDN609 series, MIC4422 series, UCC27322DR, UCC37322DR) carry ROHS3 compliance certification. The original IXDN409SI does not specify RoHS status. Compliance verification is recommended for applications with RoHS requirements.

Q: What is the difference between UCC27322 and UCC37322 series?

A: Both series operate within 4V to 15V supply range and provide 9A peak output current. The primary difference is operating temperature range: UCC27322 operates from -40°C to 105°C, while UCC37322 operates from 0°C to 70°C. UCC27322 is the preferred choice for extended temperature applications within the 4V to 15V supply window.

Q: Can I use UCC27322DR in place of IXDN409SI for all applications?

A: UCC27322DR substitution requires design verification. The reduced supply voltage range (4V to 15V versus 4.5V to 35V) and narrower operating temperature range (-40°C to 105°C versus -55°C to 150°C) may not support all original applications. Confirm that your application operates within these reduced specifications before selecting this substitute.