MIC4422BN Equivalent & Substitute Parts

Part Overview

The MIC4422BN is a low-side gate driver IC manufactured by Microchip Technology, designed for driving IGBT and N-Channel MOSFET gates in power management applications. This device operates with a non-inverting input configuration and delivers 9A peak output current in both source and sink modes.

The MIC4422BN is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this gate driver topology.

Substiute Parts

MIC4422BN

Microchip TechnologyIn Stock: 1489MIC4422BN Datasheet

Current PartRFQ

MIC4422YN

Microchip TechnologyIn Stock: 6404MIC4422YN Datasheet

DirectRFQ

UCC37322P

Texas InstrumentsIn Stock: 10606UCC37322P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MIC4422BN are identified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Critical Matching Parameters:

• Driven Configuration: Low-Side (must match exactly)
• Channel Type: Single channel (must match exactly)
• Input Type: Non-Inverting (must match exactly)
• Package / Case: 8-DIP (0.300", 7.62mm) (must match exactly)
• Mounting Type: Through Hole (must match exactly)
• Current - Peak Output: 9A source and sink capability (must match exactly)

Allowable Parameter Ranges for Substitution:

• Voltage - Supply: Must encompass or match the 4.5V ~ 18V range
• Logic Voltage - VIL, VIH: Must be compatible with standard logic levels
• Rise / Fall Time: Variations within typical gate driver specifications are acceptable
• Operating Temperature: Must support the application's required temperature range
• Gate Type: May include additional gate types (IGBT, N-Channel MOSFET, P-Channel MOSFET) provided core functionality is maintained

Parameter Comparison

Engineering Selection Recommendations

MIC4422YN (Microchip Technology): This part is the direct Microchip equivalent to the obsolete MIC4422BN. Electrical parameters are identical, including supply voltage range (4.5V ~ 18V), logic thresholds, output current capability, and timing characteristics. The MIC4422YN maintains active product status and achieves ROHS3 compliance, addressing regulatory requirements while preserving full functional compatibility. This part is the primary recommendation for direct replacement in existing designs.

UCC37322P (Texas Instruments): This part provides functional equivalence as a low-side gate driver with matching 9A output current, non-inverting input configuration, and 8-DIP package. However, the UCC37322P operates within a reduced supply voltage range (4V ~ 15V) compared to the MIC4422BN (4.5V ~ 18V), and features a narrower operating temperature range (0°C ~ 70°C versus -40°C ~ 150°C). The UCC37322P is suitable for applications operating within these parameter constraints and offers ROHS3 compliance and active product status. Selection of this part requires verification that the application's supply voltage and temperature requirements fall within the specified limits.

Frequently Asked Questions (FAQ)

Q: Can the MIC4422YN be used as a direct replacement for the MIC4422BN?

A: Yes. The MIC4422YN is electrically and mechanically identical to the MIC4422BN. Both parts share the same supply voltage range (4.5V ~ 18V), logic thresholds (0.8V, 2.4V), peak output current (9A source and sink), and timing characteristics (20ns rise, 24ns fall). The MIC4422YN is the recommended substitute due to its active product status and ROHS3 compliance.

Q: What are the key differences between the MIC4422YN and UCC37322P?

A: The primary differences are supply voltage range and operating temperature range. The MIC4422YN supports 4.5V ~ 18V supply and -40°C ~ 150°C operating temperature, while the UCC37322P operates at 4V ~ 15V supply and 0°C ~ 70°C. Both devices deliver identical 9A peak output current and share the same 8-DIP package. The UCC37322P is suitable only for applications within its specified voltage and temperature limits.

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

A: Yes. Both the MIC4422YN and UCC37322P are packaged in 8-DIP (0.300", 7.62mm) through-hole format, matching the MIC4422BN package specification. No PCB layout modifications are required for substitution.

Q: Does the UCC37322P support IGBT gate driving?

A: The UCC37322P gate type specification lists N-Channel and P-Channel MOSFET. The MIC4422BN and MIC4422YN explicitly support IGBT gate driving. If IGBT gate driving is required, the MIC4422YN is the appropriate selection.

Q: What is the impact of the UCC37322P's reduced operating temperature range?

A: The UCC37322P operates from 0°C ~ 70°C (TA), compared to the MIC4422BN's -40°C ~ 150°C (TJ) range. Applications requiring operation below 0°C or above 70°C must use the MIC4422YN. Verify your application's temperature requirements before selecting the UCC37322P.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the MIC4422YN and UCC37322P are ROHS3 compliant. The original MIC4422BN is RoHS non-compliant. Substitution with either part addresses RoHS compliance requirements.