ISL6269ACRZ Equivalent & Substitute Parts

Part Overview

The ISL6269ACRZ is a buck regulator positive output step-down DC-DC controller IC manufactured by Renesas Electronics Corporation, part of the Robust Ripple Regulator™ (R3) series. This 16-QFN (4x4) surface mount device functions as a transistor driver for single-output, single-phase buck topology applications with input voltage range of 5V to 25V and switching frequency capability of 200kHz to 600kHz.

The ISL6269ACRZ is currently in Last Time Buy status. Identifying equivalent substitute parts ensures design continuity and supply chain flexibility for applications requiring this controller topology and electrical performance envelope.

Substiute Parts

ISL6269ACRZ

Renesas Electronics CorporationIn Stock: 1619ISL6269ACRZ Datasheet

Current PartRFQ

ISL6269BCRZ

IntersilIn Stock: 2278ISL6269BCRZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISL6269ACRZ are identified based on strict equivalence across the following critical parameters:

• Topology & Function: Buck step-down DC-DC controller with transistor driver output
• Output Configuration: Single output, single phase, positive output
• Voltage Supply Range: 5V ~ 25V input capability
• Switching Frequency Range: 200kHz ~ 600kHz operational band
• Control Features: Enable, Frequency Control, Phase Control, and Power Good functions
• Synchronous Rectifier: Integrated synchronous rectifier support
• Package: 16-QFN (4x4) with exposed pad, surface mount
• Operating Temperature: -10°C ~ 100°C (TA)

The ISL6269BCRZ meets all these criteria and is classified as a parametric equivalent. Both devices share the same base product number (ISL6269) and deliver identical electrical and mechanical performance within the specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The ISL6269BCRZ is a direct parametric equivalent to the ISL6269ACRZ. Both devices deliver identical electrical performance and mechanical compatibility within the specified operating envelope.

Key Selection Factors:

• Product Status: The ISL6269ACRZ is in Last Time Buy status. The ISL6269BCRZ is Active, providing superior long-term availability and supply chain stability.
• Compliance: The ISL6269ACRZ is ROHS3 Compliant. Compliance status for the ISL6269BCRZ is not specified in available data; verification with the manufacturer is recommended for applications with strict compliance requirements.
• Packaging: Both devices are supplied in 16-QFN (4x4) surface mount packages with exposed pads. Packaging format is identical, ensuring direct PCB layout compatibility.
• Certifications: Both devices carry EAR99 ECCN classification. HTSUS codes differ slightly (8542.31.0001 vs. 8542.39.0001) due to manufacturer classification differences, not functional variation.

For new designs or applications requiring extended product lifecycle support, the ISL6269BCRZ is the preferred selection. For existing designs currently using the ISL6269ACRZ, substitution is electrically and mechanically valid.

Frequently Asked Questions (FAQ)

Q: Can the ISL6269BCRZ be used as a direct replacement for the ISL6269ACRZ in existing designs?

A: Yes. Both devices share identical electrical specifications across all critical parameters: buck topology, single-phase output, 5V–25V supply range, 200kHz–600kHz switching frequency, synchronous rectifier support, and control feature set. Package geometry and pinout are identical (16-QFN 4x4 with exposed pad). Direct PCB substitution is valid without design modification.

Q: What is the difference between the ISL6269ACRZ and ISL6269BCRZ?

A: The devices are parametric equivalents manufactured by different companies (Renesas Electronics Corporation vs. Intersil). Electrical performance and mechanical specifications are identical. The primary difference is product status: ISL6269ACRZ is Last Time Buy, while ISL6269BCRZ is Active. Packaging differs in format (Tray vs. Bulk), not in component specification.

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

A: The ISL6269ACRZ is confirmed ROHS3 Compliant with MSL 3 (168 Hours). Compliance status for the ISL6269BCRZ is not specified in available technical data. Both devices carry EAR99 ECCN classification. For applications with strict regulatory requirements, verify ISL6269BCRZ compliance documentation with the manufacturer before selection.

Q: Do these devices require different PCB layouts or thermal management approaches?

A: No. Both devices use the 16-QFN (4x4) package with exposed pad. Pinout, thermal pad dimensions, and mechanical footprint are identical. Existing PCB designs require no layout modification for substitution.

Q: What is the switching frequency range for these controllers?

A: Both the ISL6269ACRZ and ISL6269BCRZ support switching frequencies from 200kHz to 600kHz. Frequency is user-configurable via the Frequency Control feature, allowing system designers to optimize efficiency and component selection for specific application requirements.

Q: Are these devices suitable for synchronous buck converter designs?

A: Yes. Both devices integrate a synchronous rectifier and are designed for synchronous buck topology applications. The transistor driver output controls both high-side and low-side MOSFETs, enabling efficient synchronous rectification across the specified 5V–25V input voltage range.