ISL6620CBZ Equivalent & Substitute Parts

Part Overview

The ISL6620CBZ is a half-bridge gate driver IC manufactured by Renesas Electronics Corporation, designed for synchronous N-channel MOSFET applications. This device operates with a supply voltage range of 4.5V to 5.5V and delivers 2A peak output current for both source and sink configurations. The ISL6620CBZ is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity.

Substiute Parts

ISL6620CBZ

Renesas Electronics CorporationIn Stock: 1977ISL6620CBZ Datasheet

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TPS28225D

Texas InstrumentsIn Stock: 1916TPS28225D Datasheet

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TPS28225DR

Texas InstrumentsIn Stock: 3748TPS28225DR Datasheet

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TPS28226D

Texas InstrumentsIn Stock: 1048TPS28226D Datasheet

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TPS28226DR

Texas InstrumentsIn Stock: 1177TPS28226DR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISL6620CBZ is determined by the following critical parameters:

• Driven Configuration: Half-Bridge topology
• Channel Type: Synchronous operation
• Number of Drivers: 2 channels
• Gate Type: N-Channel MOSFET
• Package / Case: 8-SOIC form factor
• Input Type: Non-Inverting logic
• Peak Output Current: 2A source and sink capability
• Bootstrap Voltage Rating: Minimum 33V capability

The substitute parts TPS28225D, TPS28225DR, TPS28226D, and TPS28226DR from Texas Instruments maintain these core functional parameters while offering extended supply voltage ranges and improved temperature operating windows. All substitutes are packaged in the same 8-SOIC form factor and support identical half-bridge synchronous driver configurations.

Parameter Comparison

Engineering Selection Recommendations

TPS28225D and TPS28225DR are the primary substitutes for the ISL6620CBZ. Both devices maintain the 4.5V minimum supply voltage threshold, ensuring compatibility with existing 5V supply designs. The TPS28225DR variant is recommended for production applications due to its Active product status and Tape & Reel packaging format. Both TPS28225 variants offer extended operating temperature range (-40°C to 125°C) and improved moisture sensitivity rating (MSL 1), providing enhanced reliability over the obsolete ISL6620CBZ.

TPS28226D and TPS28226DR are secondary substitutes suitable only for applications with supply voltages of 6.8V or higher. These devices are not compatible with 5V-only supply designs. The TPS28226DR is the preferred variant for production due to its Active status.

For new designs and production continuity, TPS28225DR is the optimal choice, combining full voltage range compatibility, active product status, and superior environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can TPS28226D or TPS28226DR replace ISL6620CBZ in a 5V supply application?

A: No. The TPS28226 series requires a minimum supply voltage of 6.8V and is not compatible with 5V-only designs. Use TPS28225D or TPS28225DR instead.

Q: What is the difference between the tube and Tape & Reel packaging options?

A: Tube packaging (TPS28225D, TPS28226D) is suitable for lower-volume applications and manual assembly. Tape & Reel packaging (TPS28225DR, TPS28226DR) is designed for automated high-volume production and offers better handling efficiency.

Q: Are all substitute parts pin-compatible with ISL6620CBZ?

A: All substitute parts use the 8-SOIC package with identical 0.154" width and 3.90mm dimensions, ensuring mechanical compatibility. Functional pin assignments for half-bridge gate driver configurations are consistent across all listed parts.

Q: What is the significance of the MSL rating difference?

A: The ISL6620CBZ has MSL 3 (168-hour moisture sensitivity), while all TPS282xx substitutes have MSL 1 (unlimited). MSL 1 provides superior moisture resistance and longer shelf life without requiring special storage conditions.

Q: Why is the bootstrap voltage rating lower on substitute parts?

A: The TPS282xx series has a 33V maximum bootstrap voltage compared to 36V on the ISL6620CBZ. This difference is within typical application margins for half-bridge gate driver circuits and does not affect functionality in standard designs.

Q: Which substitute should be selected for new production designs?

A: TPS28225DR is the recommended choice for new production designs, offering Active product status, full 4.5V to 8.8V supply range compatibility, and superior environmental specifications.