ICL7667CBA Gate Driver IC Equivalent & Substitute Parts

Part Overview

The ICL7667CBA is an inverting gate driver IC designed for half-bridge N-channel MOSFET applications within the Power Management (PMIC) category. Manufactured by Analog Devices Inc./Maxim Integrated, this 8-SOIC surface mount device operates across a 4.5V to 17V supply voltage range with logic thresholds of 0.8V (VIL) and 2V (VIH). The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

ICL7667CBA

Analog Devices Inc./Maxim IntegratedIn Stock: 1346ICL7667CBA Datasheet

Current PartRFQ

ICL7667CBA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1531ICL7667CBA+ Datasheet

DirectRFQ

ICL7667CBAZA

Renesas Electronics CorporationIn Stock: 2362ICL7667CBAZA Datasheet

MFR RecommendedRFQ

ICL7667CBAZA-T

Renesas Electronics CorporationIn Stock: 2288ICL7667CBAZA-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICL7667CBA is determined by strict equivalence across the following critical parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) — physical and electrical compatibility
• Number of Drivers: 2 — functional requirement for half-bridge configuration
• Gate Type: N-Channel MOSFET — application-specific requirement
• Input Type: Inverting — logic signal inversion requirement
• Rise / Fall Time (Typ): 20ns, 20ns — switching performance specification
• Logic Voltage - VIL, VIH: 0.8V, 2V — input signal threshold compatibility
• Mounting Type: Surface Mount — assembly process compatibility

Substitute parts must maintain compatibility across all these parameters. Variations in supply voltage range, operating temperature range, or product status are noted but do not preclude substitution when the above core parameters align.

Parameter Comparison

Engineering Selection Recommendations

ICL7667CBA+ (Direct Manufacturer Upgrade)

The ICL7667CBA+ is the primary substitute for the obsolete ICL7667CBA. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical specifications, including the full 4.5V to 17V supply voltage range and 0°C to 150°C operating temperature range. The ICL7667CBA+ is currently in active production status with ROHS3 compliance, making it the preferred choice for new designs and production continuity. Packaging is available in Tube format.

ICL7667CBAZA and ICL7667CBAZA-T (Renesas Alternatives)

Both ICL7667CBAZA and ICL7667CBAZA-T are manufactured by Renesas Electronics Corporation and maintain functional equivalence across all core parameters: 2-driver configuration, N-channel MOSFET gate type, inverting input logic, 20ns rise/fall times, and 0.8V/2V logic thresholds. These parts operate within a reduced supply voltage range of 4.5V to 15V and a narrower operating temperature range of 0°C to 70°C compared to the original ICL7667CBA. Both are in active production with ROHS3 compliance. The ICL7667CBAZA-T is supplied in Cut Tape (CT) & Digi-Reel® packaging, while the ICL7667CBAZA is supplied in Tube packaging. Selection between these variants depends on assembly process requirements and packaging preferences.

Frequently Asked Questions (FAQ)

Q: Can ICL7667CBA+ be used as a direct replacement for ICL7667CBA?

A: Yes. The ICL7667CBA+ maintains identical electrical specifications and package configuration. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant). No circuit modifications are required.

Q: What are the limitations of using ICL7667CBAZA or ICL7667CBAZA-T as substitutes?

A: The Renesas alternatives operate within a reduced supply voltage range (4.5V to 15V versus 4.5V to 17V) and narrower operating temperature range (0°C to 70°C versus 0°C to 150°C). Applications requiring supply voltages above 15V or junction temperatures above 70°C are not compatible with these parts.

Q: Are there packaging differences between substitute options?

A: Yes. ICL7667CBA+ is supplied in Tube packaging. ICL7667CBAZA is supplied in Tube packaging. ICL7667CBAZA-T is supplied in Cut Tape (CT) & Digi-Reel® packaging. All three maintain the same 8-SOIC physical footprint and are surface mount compatible.

Q: Do all substitute parts meet RoHS requirements?

A: The original ICL7667CBA is RoHS non-compliant. All three substitute options (ICL7667CBA+, ICL7667CBAZA, and ICL7667CBAZA-T) are ROHS3 compliant, meeting current environmental and regulatory standards.

Q: What is the functional difference between inverting and non-inverting gate drivers?

A: The ICL7667CBA and all listed substitutes are inverting gate drivers, meaning a high logic input produces a low gate output, and vice versa. This characteristic is fundamental to the application and must be maintained in any substitution.

Q: Can these parts be used interchangeably in half-bridge MOSFET applications?

A: Yes, provided the application's supply voltage and operating temperature requirements fall within the specified ranges of the selected substitute. All listed parts support independent 2-driver configuration required for half-bridge topologies.