AP6502ASP-13 Equivalent & Substitute Parts

Part Overview

The AP6502ASP-13 is a buck switching regulator IC from Diodes Incorporated designed for positive adjustable output applications. This device functions as a step-down converter with a single adjustable output capable of delivering 2A of current. The part is classified as obsolete, making identification of functionally compatible alternatives essential for ongoing design support and production continuity.

Substiute Parts

AP6502ASP-13

Diodes IncorporatedIn Stock: 2684AP6502ASP-13 Datasheet

Current PartRFQ

AP6503SP-13

Diodes IncorporatedIn Stock: 50181AP6503SP-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the AP6502ASP-13 is determined by the following critical parameters:

• Package and Pinout: Identical 8-SOIC (0.154", 3.90mm Width) Exposed Pad package ensures mechanical and electrical compatibility
• Topology and Function: Buck converter topology with positive adjustable output configuration
• Input Voltage Range: Minimum 4.75V input requirement
• Output Voltage Range: Adjustable output from 0.925V minimum
• Output Current Capability: Minimum 2A required for direct substitution
• Synchronous Rectification: Presence of integrated synchronous rectifier
• Operating Temperature Range: -40°C to 85°C specification
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The AP6503SP-13 qualifies as a direct substitute based on these parameters. While it offers enhanced specifications (3A output current, 340kHz switching frequency, 20V maximum output), it maintains full backward compatibility with the AP6502ASP-13 in the same package footprint and meets all mandatory electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

The AP6503SP-13 is a qualified substitute for the AP6502ASP-13 based on the following engineering criteria:

Compliance and Certification: Both devices maintain ROHS3 compliance and MSL Level 1 rating, ensuring equivalent environmental and handling standards.

Package Compatibility: Identical 8-SOIC package with exposed pad provides direct PCB footprint compatibility without layout modifications.

Electrical Compatibility: The AP6503SP-13 maintains the same input voltage range (4.7V to 23V), output voltage adjustability (0.925V minimum), and operating temperature range (-40°C to 85°C). The device incorporates synchronous rectification identical to the original part.

Enhanced Specifications: The substitute offers higher output current capability (3A versus 2A) and increased maximum output voltage (20V versus 16V), providing design margin for applications requiring the original 2A specification.

Product Status: Both devices are classified as obsolete. The AP6503SP-13 maintains higher inventory availability (50,100 pieces) compared to the AP6502ASP-13 (2,600 pieces), supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can the AP6503SP-13 directly replace the AP6502ASP-13 on existing PCBs?

A: Yes. Both devices use identical 8-SOIC (0.154", 3.90mm Width) Exposed Pad packaging with the same pinout. No PCB modifications are required for mechanical or electrical integration.

Q: What are the key differences between these parts?

A: The AP6503SP-13 provides higher output current (3A versus 2A), increased maximum output voltage (20V versus 16V), and higher switching frequency (340kHz versus 240kHz). Input voltage range and adjustable output voltage minimum (0.925V) remain identical.

Q: Are there any compliance or certification differences?

A: No. Both devices maintain ROHS3 compliance, MSL Level 1 rating, and identical operating temperature specifications (-40°C to 85°C).

Q: Does the higher switching frequency of the AP6503SP-13 affect circuit design?

A: The increased switching frequency (340kHz versus 240kHz) may require evaluation of filter component sizing and EMI characteristics for specific applications, but the device remains functionally compatible within the same package.

Q: What is the minimum input voltage requirement for substitution?

A: The AP6502ASP-13 requires 4.75V minimum input, while the AP6503SP-13 operates at 4.7V minimum. Both specifications support standard 5V supply applications.

Q: Are there inventory considerations for this substitution?

A: The AP6503SP-13 has significantly higher inventory availability (50,100 pieces) compared to the AP6502ASP-13 (2,600 pieces), making it the preferred choice for production continuity given both devices are obsolete.