ISL6341AIRZ Equivalent & Substitute Parts

Part Overview

The ISL6341AIRZ is a buck regulator positive output step-down DC-DC controller IC manufactured by Renesas Electronics Corporation. This device functions as a transistor driver for single-output, single-phase buck topology applications with a supply voltage range of 4.5V to 14.4V and a switching frequency of 600kHz. The ISL6341AIRZ is currently in Last Time Buy status, making identification of equivalent and substitute parts essential for ongoing design support and procurement planning. Alternative components with compatible electrical and mechanical specifications ensure design continuity and supply chain flexibility.

Substiute Parts

ISL6341AIRZ

Renesas Electronics CorporationIn Stock: 1659ISL6341AIRZ Datasheet

Current PartRFQ

ISL6341AIRZ-T

Renesas Electronics CorporationIn Stock: 5561ISL6341AIRZ-T Datasheet

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NCP1589CMNTWG

onsemiIn Stock: 6473NCP1589CMNTWG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISL6341AIRZ are identified based on strict alignment with core electrical and mechanical parameters. The primary substitution criteria include:

• Topology and Function: Buck regulator controller with transistor driver output
• Output Configuration: Single output, single phase, positive output
• Supply Voltage Range: Minimum 4.5V input capability
• Switching Frequency: 600kHz nominal operation
• Duty Cycle: 75% maximum
• Synchronous Rectifier: Integrated synchronous rectification support
• Package Type: 10-pin DFN with exposed pad, surface mount
• Control Features: Enable and Power Good functionality
• Compliance: ROHS3 compliant

The ISL6341AIRZ-T (Renesas, Tape & Reel packaging) is a direct manufacturer-recommended substitute with identical electrical specifications and package geometry. The NCP1589CMNTWG (onsemi) is classified as a similar substitute with compatible buck controller topology and package footprint, though with specified parameter variations in supply voltage range, switching frequency, and operating temperature.

Parameter Comparison

Engineering Selection Recommendations

ISL6341AIRZ-T is the primary substitute for the ISL6341AIRZ. Both devices are manufactured by Renesas Electronics Corporation with identical electrical specifications, package geometry, and control feature sets. The ISL6341AIRZ-T is in Active product status with higher inventory availability (5477 pcs) compared to the Last Time Buy ISL6341AIRZ (1598 pcs). The only difference is packaging format: ISL6341AIRZ-T is supplied in Tape & Reel format, standard for automated assembly processes. This substitute provides direct functional and mechanical compatibility with no design modifications required.

NCP1589CMNTWG is a compatible alternative from onsemi for applications where supply voltage does not exceed 13.2V and operating temperature range does not fall below -20°C. This device maintains buck controller topology, single-output single-phase configuration, and synchronous rectification capability. The NCP1589CMNTWG operates at 300kHz switching frequency (half the ISL6341AIRZ rate) and includes reduced control features (Enable and Power Good only, without Phase Control and Power on Reset). The 10-VFDFN package footprint is compatible with 10-WFDFN layouts. The NCP1589CMNTWG offers superior moisture handling (MSL 1 vs. MSL 3) and higher inventory availability (6400 pcs). Selection of this substitute requires verification that the lower switching frequency and reduced control feature set align with application requirements.

Frequently Asked Questions (FAQ)

Q: Can ISL6341AIRZ-T be used as a direct replacement for ISL6341AIRZ?

A: Yes. ISL6341AIRZ-T is a direct manufacturer-recommended substitute with identical electrical specifications, package footprint, and control features. The only difference is packaging format (Tape & Reel vs. Tray). No circuit modifications are required.

Q: What are the key differences between ISL6341AIRZ and NCP1589CMNTWG?

A: The NCP1589CMNTWG differs in three areas: (1) switching frequency is 300kHz versus 600kHz, (2) maximum supply voltage is 13.2V versus 14.4V, (3) control features are limited to Enable and Power Good, excluding Phase Control and Power on Reset. Operating temperature range is also narrower (-20°C to 70°C vs. -40°C to 85°C).

Q: Is the NCP1589CMNTWG suitable for all ISL6341AIRZ applications?

A: The NCP1589CMNTWG is suitable only for applications where supply voltage does not exceed 13.2V, operating temperature remains between -20°C and 70°C, and Phase Control and Power on Reset functions are not required. Applications requiring the full -40°C to 85°C temperature range or 14.4V maximum supply voltage must use ISL6341AIRZ or ISL6341AIRZ-T.

Q: Are package dimensions compatible between ISL6341AIRZ and NCP1589CMNTWG?

A: Both devices use 10-pin DFN packages with exposed pad in 3x3mm form factor. ISL6341AIRZ uses 10-WFDFN and NCP1589CMNTWG uses 10-VFDFN. The footprints are mechanically compatible for PCB layout purposes. NCP1589CMNTWG includes wettable flank feature for improved solder joint inspection.

Q: What is the significance of Product Status for the ISL6341AIRZ?

A: ISL6341AIRZ is in Last Time Buy status, indicating Renesas will discontinue production. ISL6341AIRZ-T and NCP1589CMNTWG are both in Active status, ensuring long-term availability and supply continuity. For new designs or long-term production, ISL6341AIRZ-T is the recommended choice.

Q: How does switching frequency affect circuit design?

A: The ISL6341AIRZ operates at 600kHz while NCP1589CMNTWG operates at 300kHz. Higher switching frequency typically allows smaller output filter components but increases switching losses. Lower frequency reduces switching losses but requires larger filter inductors and capacitors. Circuit design parameters including inductor value, capacitor selection, and PCB layout must be recalculated if switching frequency is changed.