ISL8540IVEZ Equivalent & Substitute Parts

Part Overview

The ISL8540IVEZ is a buck switching regulator IC manufactured by Renesas Electronics Corporation, designed for positive adjustable output applications. This device delivers 2A output current with an adjustable output voltage range from 1.21V to 35V, operating from a 9V to 40V input supply. The ISL8540IVEZ is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity.

Substiute Parts

ISL8540IVEZ

Renesas Electronics CorporationIn Stock: 1246ISL8540IVEZ Datasheet

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ISL8560IRZ

Renesas Electronics CorporationIn Stock: 3027ISL8560IRZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISL8540IVEZ are identified based on strict alignment with the following electrical and mechanical parameters:

• Topology & Function: Buck switching regulator with step-down operation
• Output Configuration: Positive adjustable output
• Output Voltage Range: Minimum 1.21V adjustable output capability
• Output Current: 2A rated output
• Input Voltage Range: Minimum 9V input support
• Switching Frequency: 100kHz ~ 600kHz operation
• Synchronous Rectifier: Integrated synchronous rectification
• Operating Temperature: -40°C ~ 125°C junction temperature range
• Mounting & Package: Surface mount technology with exposed pad design
• Compliance: ROHS3 compliant

The ISL8560IRZ qualifies as a substitute based on matching all core electrical specifications and functional requirements, with differences limited to package form factor and maximum input/output voltage ratings.

Parameter Comparison

Engineering Selection Recommendations

The ISL8560IRZ serves as a direct functional substitute for the ISL8540IVEZ in applications where the original part is unavailable due to obsolescence. Both devices maintain identical electrical performance specifications for buck regulation topology, output current capability, and operating temperature range.

The primary distinction between these parts is package form factor: the ISL8540IVEZ uses 20-TSSOP packaging while the ISL8560IRZ uses 20-VQFN packaging. This difference requires PCB layout modification and component footprint redesign. Additionally, the ISL8560IRZ supports higher maximum input voltage (60V versus 40V) and higher maximum output voltage (55V versus 35V), providing extended operating range capability.

Both parts maintain ROHS3 compliance and EAR99 export classification. The ISL8560IRZ offers improved moisture sensitivity rating (MSL 2 versus MSL 3), reducing handling and storage constraints.

Frequently Asked Questions (FAQ)

Q: Can the ISL8560IRZ directly replace the ISL8540IVEZ without PCB modification?

A: No. While electrical specifications are compatible, the package form factors differ. The ISL8540IVEZ uses 20-TSSOP packaging and the ISL8560IRZ uses 20-VQFN packaging. PCB layout and component footprints must be redesigned to accommodate the different package geometry.

Q: What are the key electrical compatibility factors between these parts?

A: Both devices share identical output current rating (2A), adjustable output voltage minimum (1.21V), switching frequency range (100kHz ~ 600kHz), synchronous rectifier integration, and operating temperature range (-40°C ~ 125°C). The ISL8560IRZ supports higher voltage ratings, making it suitable for applications within the ISL8540IVEZ voltage specifications.

Q: Does the higher maximum input voltage of the ISL8560IRZ affect circuit design?

A: The ISL8560IRZ maximum input voltage of 60V exceeds the ISL8540IVEZ specification of 40V. For applications operating within the 9V to 40V input range, this difference does not impact circuit operation. Applications requiring input voltages between 40V and 60V can only use the ISL8560IRZ.

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

A: The ISL8540IVEZ carries MSL 3 (168 hours) while the ISL8560IRZ carries MSL 2 (1 year). MSL rating indicates moisture sensitivity during storage and handling. The ISL8560IRZ requires less stringent moisture control during component storage and assembly processes.

Q: Are both parts suitable for new designs?

A: Both parts are classified as obsolete. For new designs, consultation with Renesas Electronics Corporation is recommended to identify current-generation buck regulator alternatives that provide long-term availability and production support.