AP1605SG-13 Equivalent & Substitute Parts

Part Overview

The AP1605SG-13 is a buck switching regulator IC manufactured by Diodes Incorporated, designed for positive adjustable step-down voltage regulation with a 3A output current capability. This component operates across a 2.5V to 7V input range and delivers adjustable output from 2.2V to 7V, making it suitable for low-voltage power management applications.

The AP1605SG-13 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance of systems utilizing this component.

Substiute Parts

AP1605SG-13

Diodes IncorporatedIn Stock: 9504AP1605SG-13 Datasheet

Current PartRFQ

AOZ1284PI

Alpha & Omega Semiconductor Inc.In Stock: 18386AOZ1284PI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP1605SG-13 is evaluated based on the following critical parameters:

• Topology & Function: Buck switching regulator with positive adjustable output
• Package Compatibility: 8-SOIC form factor with matching pinout and thermal characteristics
• Electrical Performance: Input voltage range, output voltage adjustability, and output current capacity
• Operating Conditions: Temperature range and switching frequency stability
• Compliance & Status: RoHS3 compliance and active product status for long-term availability

The AOZ1284PI from Alpha & Omega Semiconductor Inc. qualifies as a substitute based on matching topology, package form factor, and functional capability to deliver adjustable positive buck regulation. Both devices employ 8-SOIC packaging and support adjustable output voltage configuration.

Parameter Comparison

Engineering Selection Recommendations

The AOZ1284PI is an active product with extended availability and improved compliance characteristics compared to the obsolete AP1605SG-13. Both devices are ROHS3 compliant and share the same 8-SOIC package footprint, enabling direct PCB layout compatibility.

The AOZ1284PI offers superior specifications: higher maximum input voltage (36V vs. 7V), lower minimum output voltage (0.8V vs. 2.2V), increased output current (4A vs. 3A), and wider operating temperature range (-40°C to 85°C vs. -20°C to 85°C). The AOZ1284PI also features an exposed pad variant for improved thermal dissipation and carries MSL 2 moisture sensitivity rating, indicating better shelf-life stability.

For applications operating within the AP1605SG-13 original specifications (2.5V to 7V input, 2.2V to 7V output, 3A load), the AOZ1284PI provides functional equivalence with enhanced performance margins and long-term supply chain security.

Frequently Asked Questions (FAQ)

Q: Can the AOZ1284PI directly replace the AP1605SG-13 in existing designs?

A: Yes, for applications within the original AP1605SG-13 operating range. Both devices use identical 8-SOIC packaging and support adjustable positive buck regulation. The AOZ1284PI's higher current rating (4A) and wider input voltage range (3V to 36V) provide additional design margin. Verify that your application's input voltage minimum requirement (2.5V for AP1605SG-13 vs. 3V for AOZ1284PI) is compatible with your power source.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete vs. active), input voltage range (7V max vs. 36V max), output voltage range (7V max vs. 30.6V max), output current (3A vs. 4A), and operating temperature range (-20°C to 85°C vs. -40°C to 85°C). The AOZ1284PI includes an exposed pad for thermal management and carries superior moisture sensitivity rating (MSL 2 vs. MSL 3).

Q: Are there any package differences that affect PCB layout?

A: Both parts use 8-SOIC (0.154", 3.90mm Width) packaging with identical footprints. The AOZ1284PI variant includes an exposed pad, which improves thermal performance but requires no layout changes for basic functionality. Existing AP1605SG-13 PCB designs can accommodate the AOZ1284PI without modification.

Q: What compliance certifications apply to both parts?

A: Both the AP1605SG-13 and AOZ1284PI are ROHS3 compliant and REACH unaffected. Both carry EAR99 export classification and fall under HTSUS code 8542.39.0001.

Q: Why is the AP1605SG-13 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The AOZ1284PI, as an active product from a different manufacturer, provides functional continuity and ensures ongoing availability for new production runs or system maintenance.