FAN5236QSCX Equivalent & Substitute Parts

Part Overview

The FAN5236QSCX is a DDR voltage regulator controller IC manufactured by onsemi, designed for mobile-friendly applications requiring dual output voltage regulation. This 28-QSOP surface mount device operates with input voltage range of 5V to 24V and provides output voltage regulation from 0.9V to 5V across two independent outputs.

The FAN5236QSCX has reached obsolete product status, making it necessary to identify functionally equivalent substitute components for ongoing design support and production continuity. Suitable alternatives must maintain electrical compatibility across critical parameters including input/output voltage ranges, output channel count, operating temperature specifications, and package form factor.

Substiute Parts

FAN5236QSCX

onsemiIn Stock: 10266FAN5236QSCX Datasheet

Current PartRFQ

ISL6227IAZ

Renesas Electronics CorporationIn Stock: 1425ISL6227IAZ Datasheet

UpgradeRFQ

ISL6227CAZ

Renesas Electronics CorporationIn Stock: 6558ISL6227CAZ Datasheet

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ISL6227CAZ-T

IntersilIn Stock: 16866ISL6227CAZ-T Datasheet

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ISL6227IAZ-T

Renesas Electronics CorporationIn Stock: 5447ISL6227IAZ-T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FAN5236QSCX are qualified based on the following electrical and mechanical compatibility criteria:

Critical Matching Parameters:

• Dual output configuration (2 outputs required)
• 28-SSOP/QSOP package form factor with 0.154" width (3.90mm)
• Surface mount technology
• Input voltage range compatibility: substitute minimum input must not exceed 5V, and substitute maximum input must be ≥24V
• Output voltage range compatibility: substitute range must encompass 0.9V to 5V
• Operating temperature range: substitute range must cover or exceed -10°C to 85°C

All four substitute parts (ISL6227IAZ, ISL6227CAZ, ISL6227CAZ-T, ISL6227IAZ-T) meet these criteria. They are manufactured by Renesas Electronics Corporation or Intersil, operate with expanded input voltage range (5V ~ 28V), support output voltage range of 0.9V ~ 5.5V, and are housed in compatible 28-SSOP/QSOP packages.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Production Continuity:

ISL6227CAZ-T and ISL6227IAZ-T are the preferred substitutes due to active product status, ensuring long-term availability and manufacturer support. ISL6227CAZ-T is manufactured by Intersil and maintains active production status with 16,761 units in stock. ISL6227IAZ-T is manufactured by Renesas Electronics Corporation, also with active status and 5,400 units available, offering extended operating temperature range (-40°C to 100°C) compared to the original FAN5236QSCX specification.

For Existing Inventory Management:

ISL6227IAZ and ISL6227CAZ remain viable alternatives with Last Time Buy status. ISL6227IAZ provides the widest operating temperature range (-40°C to 100°C) and is available in 1,316 units. ISL6227CAZ offers the largest inventory position (6,487 units) with operating temperature range of -10°C to 100°C.

All substitute parts provide expanded input voltage capability (5V ~ 28V versus 5V ~ 24V) and enhanced output voltage range (0.9V ~ 5.5V versus 0.9V ~ 5V), delivering improved design flexibility. Package compatibility is maintained across all alternatives with identical 28-SSOP form factor and pin count.

Frequently Asked Questions (FAQ)

Q: Can ISL6227 series parts directly replace FAN5236QSCX in existing PCB designs?

A: Yes. All ISL6227 variants maintain identical 28-SSOP package dimensions (0.154" width, 3.90mm) and pin count, enabling direct PCB footprint compatibility without layout modifications.

Q: What are the key electrical differences between FAN5236QSCX and ISL6227 substitutes?

A: The primary differences are expanded input voltage range (ISL6227 supports 5V ~ 28V versus FAN5236QSCX 5V ~ 24V) and slightly higher maximum output voltage (ISL6227 supports 0.9V ~ 5.5V versus FAN5236QSCX 0.9V ~ 5V). Both maintain dual output configuration and surface mount technology.

Q: Which substitute offers the best long-term availability?

A: ISL6227CAZ-T and ISL6227IAZ-T both carry active product status, ensuring ongoing manufacturer support and production. ISL6227CAZ-T has the highest current inventory (16,761 units), while ISL6227IAZ-T provides extended temperature range (-40°C to 100°C).

Q: Are there RoHS compliance considerations for substitution?

A: ISL6227IAZ, ISL6227CAZ, and ISL6227IAZ-T are ROHS3 compliant. ISL6227CAZ-T RoHS status is not specified in available documentation. All parts maintain REACH Unaffected status consistent with the original FAN5236QSCX.

Q: What is the moisture sensitivity impact of substitution?

A: FAN5236QSCX carries MSL 1 (Unlimited), while ISL6227 variants carry MSL 3 (168 Hours). This requires stricter moisture control during storage and handling per IPC-A-610 standards for MSL 3 components.