MIC4422BM Equivalent & Substitute Parts

Part Overview

The MIC4422BM is a low-side gate driver IC manufactured by Microchip Technology, designed for driving IGBT and N-Channel MOSFET gates in power management applications. The device operates with a supply voltage range of 4.5V to 18V and delivers peak output currents of 9A (source and sink). The MIC4422BM is currently discontinued at DiGi Electronics, making identification of equivalent and substitute parts essential for ongoing design support and production continuity.

Substiute Parts

MIC4422BM

Microchip TechnologyIn Stock: 4901MIC4422BM Datasheet

Current PartRFQ

MIC4422YM

Microchip TechnologyIn Stock: 16788MIC4422YM Datasheet

DirectRFQ

UCC37322D

Texas InstrumentsIn Stock: 4326UCC37322D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC4422BM is determined by strict alignment of the following critical parameters:

• Driven Configuration: Low-Side
• Channel Type: Single
• Number of Drivers: 1
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Input Type: Non-Inverting
• Current - Peak Output (Source, Sink): 9A, 9A

Substitute parts must maintain compatibility within the specified supply voltage range, logic voltage thresholds, and thermal operating limits. The MIC4422YM (Microchip Technology) is a direct equivalent with identical electrical specifications and improved RoHS3 compliance. The UCC37322D (Texas Instruments) is a manufacturer-recommended substitute with comparable functionality, though with narrower supply voltage and operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

The MIC4422YM is the primary substitute for the discontinued MIC4422BM. Both devices are manufactured by Microchip Technology and share identical electrical specifications, pin configuration, and package dimensions. The MIC4422YM offers the additional advantage of ROHS3 compliance, making it suitable for applications with environmental and regulatory requirements. Current inventory availability of 16,750 pieces supports production continuity.

The UCC37322D (Texas Instruments) is a manufacturer-recommended alternative with comparable gate driver functionality. However, this device operates within a narrower supply voltage range (4V ~ 15V versus 4.5V ~ 18V) and a reduced operating temperature range (0°C ~ 70°C ambient versus -40°C ~ 150°C junction). The UCC37322D is designated as Last Time Buy, indicating limited future availability. Selection of this substitute requires verification that the application's supply voltage and thermal operating conditions fall within the UCC37322D specifications.

Frequently Asked Questions (FAQ)

Q: Can the MIC4422YM be used as a direct replacement for the MIC4422BM?

A: Yes. The MIC4422YM is a direct equivalent with identical electrical specifications, logic thresholds, output current ratings, and package configuration. The primary difference is improved RoHS3 compliance status.

Q: What are the key differences between the MIC4422YM and UCC37322D?

A: Both devices function as low-side gate drivers with 9A peak output current and 8-SOIC packaging. The MIC4422YM maintains the original supply voltage range (4.5V ~ 18V) and extended operating temperature range (-40°C ~ 150°C junction). The UCC37322D operates within narrower limits: 4V ~ 15V supply and 0°C ~ 70°C ambient temperature. Logic voltage thresholds also differ slightly (VIL/VIH: 0.8V/2.4V for MIC4422YM versus 1.1V/2.7V for UCC37322D).

Q: Is the 8-SOIC package identical across all three parts?

A: Yes. All three devices use the 8-SOIC package with 0.154" (3.90mm) width, ensuring identical PCB footprint and mounting compatibility.

Q: What is the significance of the product status designations?

A: MIC4422BM is discontinued, meaning no new stock will be produced. MIC4422YM is active and available for new designs. UCC37322D is Last Time Buy, indicating Texas Instruments will produce limited quantities before discontinuation.

Q: Are there compliance or regulatory considerations when selecting a substitute?

A: The MIC4422YM offers ROHS3 compliance, while the MIC4422BM is RoHS non-compliant. Applications subject to RoHS directives should prioritize the MIC4422YM. Both the MIC4422YM and UCC37322D carry ROHS3 compliance and REACH Unaffected status.