FAN2013MPX Equivalent & Substitute Parts

Part Overview

The FAN2013MPX is a buck switching regulator IC manufactured by onsemi, designed for positive adjustable step-down voltage regulation with a 2A output capacity. This device operates across an input voltage range of 4.5V to 5.5V and provides adjustable output voltage from 0.8V to 4.5V at 1.3MHz switching frequency with integrated synchronous rectification.

The FAN2013MPX is classified as obsolete. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

FAN2013MPX

onsemiIn Stock: 19958FAN2013MPX Datasheet

Current PartRFQ

ST1S09PUR

STMicroelectronicsIn Stock: 32394ST1S09PUR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FAN2013MPX is determined by the following critical parameters:

• Topology & Function: Buck (step-down) switching regulator with positive adjustable output
• Output Capacity: 2A continuous output current
• Voltage Specifications: Input range compatibility and adjustable output voltage range overlap
• Switching Frequency: Operation in the 1MHz to 2MHz range
• Synchronous Rectification: Integrated synchronous rectifier for efficiency
• Package Compatibility: 6-pin DFN/WDFN surface mount with exposed pad
• Operating Temperature Range: Support for industrial temperature specifications

The ST1S09PUR qualifies as a substitute based on matching topology, output current rating, adjustable output voltage capability, synchronous rectification, and compatible 6-pin DFN package footprint. Both devices support the same functional requirements for buck regulation applications.

Parameter Comparison

Engineering Selection Recommendations

The ST1S09PUR is an active product from STMicroelectronics and represents a viable substitute for the obsolete FAN2013MPX in applications requiring buck regulation with 2A output capacity and adjustable voltage output.

Compatibility Assessment:

The ST1S09PUR maintains functional equivalence across core parameters: identical 2A output current, matching adjustable output voltage range (0.8V minimum), synchronous rectification, and compatible 6-pin DFN package footprint. The input voltage range of the ST1S09PUR (2.7V to 6V) encompasses the FAN2013MPX operating range (4.5V to 5.5V), providing broader input compatibility.

Compliance & Availability:

The ST1S09PUR is ROHS3 compliant and carries active product status with confirmed inventory availability (32,300 pcs), ensuring long-term supply chain support. Both devices share identical REACH and ECCN classifications (REACH Unaffected, EAR99), maintaining regulatory consistency.

Design Considerations:

The ST1S09PUR operates at 1.5MHz switching frequency compared to 1.3MHz for the FAN2013MPX. The minimum operating temperature of the ST1S09PUR is -30°C versus -40°C for the FAN2013MPX; applications requiring operation below -30°C require thermal analysis. The maximum output voltage of the ST1S09PUR (5.22V) exceeds the FAN2013MPX (4.5V), providing additional output voltage flexibility.

Frequently Asked Questions (FAQ)

Q: Can the ST1S09PUR directly replace the FAN2013MPX without PCB modifications?

A: The ST1S09PUR uses a 6-VDFN package while the FAN2013MPX uses 6-WDFN. Both are 6-pin DFN variants with 3x3mm footprints and exposed pads. Pin-to-pin compatibility exists for the core regulator function. Verify pinout alignment and thermal pad connection in device datasheets before PCB layout finalization.

Q: What are the key electrical differences between these devices?

A: The ST1S09PUR accepts a wider input voltage range (2.7V to 6V) compared to the FAN2013MPX (4.5V to 5.5V). The ST1S09PUR provides higher maximum output voltage (5.22V vs 4.5V) and operates at a slightly higher switching frequency (1.5MHz vs 1.3MHz). Output current capacity is identical at 2A for both devices.

Q: Is the ST1S09PUR suitable for applications requiring -40°C operation?

A: The ST1S09PUR is rated for -30°C to 85°C operation. Applications requiring -40°C minimum temperature operation must evaluate thermal performance and conduct testing to confirm functionality at the lower temperature limit, as the ST1S09PUR specification does not guarantee operation below -30°C.

Q: Are there regulatory or compliance differences between the two parts?

A: Both devices share identical REACH and ECCN classifications. The ST1S09PUR is ROHS3 compliant with active product status, while the FAN2013MPX is obsolete. For new designs or long-term production, the ST1S09PUR compliance status provides regulatory assurance.

Q: What should be verified during design transition from FAN2013MPX to ST1S09PUR?

A: Verify pinout compatibility, thermal pad connection methodology, switching frequency impact on output filtering, and input/output voltage range suitability for the specific application. Confirm that the -30°C minimum operating temperature meets application requirements. Review both device datasheets for feedback network component recommendations, as control loop characteristics may differ.