A8498SLJ-T Equivalent & Substitute Parts

Part Overview

The A8498SLJ-T is a buck switching regulator IC manufactured by Allegro MicroSystems, designed for positive adjustable output voltage regulation in power management applications. This component operates as a step-down converter with a single adjustable output, capable of delivering 3A of output current across an input voltage range of 8V to 50V, with adjustable output voltage from 0.8V to 24V.

The A8498SLJ-T carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for systems utilizing this regulator topology.

Substiute Parts

A8498SLJ-T

Allegro MicroSystemsIn Stock: 1133A8498SLJ-T Datasheet

Current PartRFQ

A8498SLJTR-T

Allegro MicroSystemsIn Stock: 54445A8498SLJTR-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A8498SLJ-T is determined by strict equivalence across the following critical parameters:

• Functional topology: Buck (step-down) switching regulator
• Output configuration: Positive adjustable voltage
• Input voltage range: 8V minimum to 50V maximum
• Output voltage range: 0.8V minimum to 24V maximum
• Output current capability: 3A
• Package type: 8-SOIC with exposed pad
• Mounting method: Surface mount
• Operating temperature range: -20°C to 85°C

The A8498SLJTR-T qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction between these parts is product status and packaging format, not functional or electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The A8498SLJTR-T is the direct substitute for the A8498SLJ-T. Both parts share identical electrical specifications, functional topology, and package configuration. The A8498SLJTR-T carries active product status, ensuring ongoing manufacturer support and supply availability, whereas the A8498SLJ-T is obsolete.

Selection between these parts should be based on:

• Availability requirements: The A8498SLJTR-T offers significantly higher inventory levels (54,434 pcs vs. 1,081 pcs) and active product status
• Packaging format: The A8498SLJTR-T is supplied in Cut Tape and Digi-Reel formats, suitable for automated assembly processes
• Moisture sensitivity: The A8498SLJTR-T has MSL 3 (168 hours), compared to MSL 1 for the A8498SLJ-T, requiring appropriate storage and handling protocols

Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for electronic component applications.

Frequently Asked Questions (FAQ)

Q: Can the A8498SLJTR-T directly replace the A8498SLJ-T in existing designs?

A: Yes. The A8498SLJTR-T is electrically and mechanically identical to the A8498SLJ-T. Both parts feature the same 8-SOIC package with exposed pad, identical input/output voltage ranges, and 3A output current capability. No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and packaging format. The A8498SLJ-T is obsolete, while the A8498SLJTR-T is active. The A8498SLJTR-T is supplied in Cut Tape and Digi-Reel formats, whereas the A8498SLJ-T uses standard packaging. Moisture sensitivity levels differ: MSL 1 for A8498SLJ-T and MSL 3 for A8498SLJTR-T.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts deliver identical electrical performance. Input voltage range (8V to 50V), adjustable output voltage (0.8V to 24V), output current (3A), operating temperature range (-20°C to 85°C), and switching regulator topology are identical.

Q: What does MSL 3 (168 hours) mean for the A8498SLJTR-T?

A: MSL 3 indicates the component can be exposed to ambient conditions of 30°C and 85% relative humidity for a maximum of 168 hours before soldering. Proper storage in moisture-controlled environments and adherence to handling protocols is required to maintain component reliability.

Q: Is the 8-SOIC package with exposed pad suitable for my PCB design?

A: The 8-SOIC package with exposed pad is a standard surface-mount configuration measuring 0.154 inches (3.90mm) in width. The exposed pad provides thermal management and improved heat dissipation. Verify your PCB layout accommodates this package footprint and thermal pad requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the A8498SLJ-T and A8498SLJTR-T are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component applications.