VT503FQX Equivalent & Substitute Parts

Part Overview

The VT503FQX is a Switching Regulator IC manufactured by Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) component. This device is currently listed as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new design implementations. The VT503FQX provides voltage regulation output functionality in integrated circuit form factor.

Substiute Parts

VT503FQX

Analog Devices Inc./Maxim IntegratedIn Stock: 934VT503FQX Datasheet

Current PartRFQ

MAX16543GPC+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1199MAX16543GPC+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VT503FQX is based on the following critical parameters:

• Manufacturer Alignment: Both the main part and substitute must originate from Analog Devices Inc./Maxim Integrated to ensure design consistency and support continuity.
• Regulatory Compliance: RoHS3 compliance and REACH unaffected status are mandatory for equivalent substitution.
• Moisture Sensitivity: MSL rating of 1 (Unlimited) ensures handling and storage compatibility.
• Product Status: Active product status of the substitute ensures ongoing availability and manufacturer support.

The MAX16543GPC+T is identified as the manufacturer-recommended substitute for the VT503FQX based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The MAX16543GPC+T is the designated substitute for the obsolete VT503FQX. This substitution is supported by:

• Identical manufacturer (Analog Devices Inc./Maxim Integrated)
• Matching RoHS3 compliance certification
• Equivalent MSL rating (1 - Unlimited)
• Identical REACH unaffected status
• Active product status ensuring current manufacturing and technical support availability

The transition from VT503FQX to MAX16543GPC+T maintains regulatory compliance requirements and manufacturer support continuity for applications requiring power management functionality.

Frequently Asked Questions (FAQ)

Q: Why is the VT503FQX being phased out? A: The VT503FQX is classified as obsolete by the manufacturer. The MAX16543GPC+T is the active replacement that maintains equivalent compliance and regulatory certifications.

Q: Are the RoHS and REACH certifications identical between the two parts? A: Yes. Both the VT503FQX and MAX16543GPC+T maintain ROHS3 compliance and REACH unaffected status, ensuring equivalent environmental and regulatory compatibility.

Q: What is the moisture sensitivity difference? A: Both parts share an MSL rating of 1 (Unlimited), indicating identical handling and storage requirements with no moisture sensitivity constraints.

Q: Is the MAX16543GPC+T currently available? A: Yes. The MAX16543GPC+T maintains active product status with current manufacturing support from Analog Devices Inc./Maxim Integrated.

Q: Can I use MAX16543GPC+T as a direct replacement in existing designs? A: Substitution suitability depends on specific application requirements beyond the parameters provided. Consult the respective datasheets for detailed functional and electrical specifications.