FAN7389MX Equivalent & Substitute Parts

Part Overview

The FAN7389MX is a half-bridge gate driver IC manufactured by onsemi, designed for driving IGBT and N-Channel MOSFET configurations in 3-phase applications. This device operates with a supply voltage range of 10V to 20V and features non-inverting input logic with peak output currents of 350mA (source) and 650mA (sink). The FAN7389MX is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications.

Substiute Parts

FAN7389MX

onsemiIn Stock: 1687FAN7389MX Datasheet

Current PartRFQ

FAN73892MX

Fairchild SemiconductorIn Stock: 35336FAN73892MX Datasheet

SimilarRFQ

FAN7389MX1

onsemiIn Stock: 6284FAN7389MX1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FAN7389MX are qualified based on the following critical parameters that determine functional equivalence:

• Driven Configuration: Half-Bridge (required match)
• Channel Type: 3-Phase (required match)
• Number of Drivers: 6 (required match)
• Gate Type: IGBT, N-Channel MOSFET (required match)
• Voltage - Supply: 10V ~ 20V (required match)
• Logic Voltage - VIL, VIH: 0.8V, 2.5V (required match)
• Current - Peak Output (Source, Sink): 350mA, 650mA (required match)
• High Side Voltage - Max (Bootstrap): 600V (required match)
• Rise / Fall Time (Typ): 50ns, 30ns (required match)
• Operating Temperature: -40°C ~ 150°C (TJ) (required match)
• Mounting Type: Surface Mount (required match)

Substitutes may differ in input type (inverting vs. non-inverting), package configuration (24-SOIC vs. 28-SOIC), product status, and packaging format (bulk vs. tape & reel), provided all electrical and thermal parameters remain within specification.

Parameter Comparison

Engineering Selection Recommendations

FAN73892MX (Fairchild Semiconductor)

This substitute offers active product status with full availability (35,300 pcs in stock). All electrical and thermal parameters match the FAN7389MX specification. The primary difference is inverting input logic, which requires circuit design accommodation. The package transitions from 24-SOIC to 28-SOIC, necessitating PCB layout modification. This option is suitable for new production designs where circuit topology can be adapted to inverting logic requirements.

FAN7389MX1 (onsemi)

This substitute maintains non-inverting input logic identical to the FAN7389MX, eliminating circuit redesign requirements. However, product status is classified as "Not For New Designs," indicating onsemi's transition away from this device. The package configuration changes from 24-SOIC to 28-SOIC. This option is appropriate for legacy system maintenance and repair where design modification is not feasible. Availability is adequate (6,180 pcs in stock) for near-term requirements.

Frequently Asked Questions (FAQ)

Q: Can FAN73892MX be used as a direct replacement for FAN7389MX?

A: FAN73892MX matches all electrical and thermal specifications but features inverting input logic compared to the non-inverting FAN7389MX. Circuit design modifications are required to accommodate this difference. Additionally, the package changes from 24-SOIC to 28-SOIC, requiring PCB layout revision.

Q: What is the difference between inverting and non-inverting input types?

A: Input type determines the logic relationship between the input signal and gate driver output. Non-inverting input produces output that follows input logic state. Inverting input produces output that is opposite to input logic state. Circuit design must account for this difference in signal conditioning and control logic.

Q: Is FAN7389MX1 suitable for new product designs?

A: FAN7389MX1 carries a "Not For New Designs" status from onsemi, indicating the manufacturer recommends against its use in new development. This classification suggests limited long-term availability and potential discontinuation. For new designs, FAN73892MX is the preferred option despite requiring circuit adaptation for inverting logic.

Q: What are the package differences between the substitutes?

A: FAN7389MX uses 24-SOIC packaging, while both FAN73892MX and FAN7389MX1 use 28-SOIC packaging. The 28-SOIC package is wider (0.295" width maintained, but pin count increases from 24 to 28). PCB footprint and layout must be updated to accommodate the larger package.

Q: Are there compliance or certification differences between these parts?

A: FAN7389MX1 specifies RoHS3 compliance. All three parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. REACH status is unaffected for both onsemi parts. Fairchild Semiconductor compliance information is not provided in the specification data.

Q: Which substitute should be selected for production?

A: Selection depends on design constraints. If circuit topology permits inverting logic adaptation, FAN73892MX is recommended due to active product status and superior availability. If non-inverting logic is mandatory and design modification is not feasible, FAN7389MX1 is acceptable for near-term production, with awareness of its "Not For New Designs" classification.