AP7346D-3028FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7346D-3028FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed dual-output applications. This device provides two independent 130mA regulated outputs at 2.8V and 3V from a maximum input of 5.25V, with a maximum dropout voltage of 0.3V at 120mA. The part is currently in Last Time Buy status, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

AP7346D-3028FS6-7

Diodes IncorporatedIn Stock: 5760AP7346D-3028FS6-7 Datasheet

Current PartRFQ

AP7345D-3028RH4-7

Diodes IncorporatedIn Stock: 848AP7345D-3028RH4-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The AP7345D-3028RH4-7 qualifies as a direct substitute based on the following critical parameters:

Matching Parameters:

• Identical manufacturer (Diodes Incorporated)
• Same output voltage configuration (2.8V and 3V dual outputs)
• Identical maximum input voltage (5.25V)
• Same operating temperature range (-40°C to 85°C)
• Equivalent dropout voltage specification (0.3V @ 300mA)
• Identical control features (Enable function)
• Same RoHS3 compliance and MSL rating

Enhanced Capability: The substitute part provides higher current output (300mA per channel versus 130mA), making it suitable for applications requiring greater current capacity while maintaining full backward compatibility with the original design specifications.

Parameter Comparison

Engineering Selection Recommendations

The AP7345D-3028RH4-7 is suitable as a substitute for the AP7346D-3028FS6-7 based on product status and compliance alignment. The substitute part is in Active status, ensuring long-term availability and supply chain stability compared to the Last Time Buy status of the original part. Both components maintain identical RoHS3 compliance and MSL ratings, supporting equivalent environmental and reliability requirements.

The primary design consideration is the package change from 6-pin to 8-pin XFDFN format, which requires PCB layout modification. The increased current capability (300mA versus 130mA per channel) provides design margin for applications operating near the original part's current limits.

Frequently Asked Questions (FAQ)

Q: Can the AP7345D-3028RH4-7 directly replace the AP7346D-3028FS6-7 without circuit modifications?

A: The electrical specifications are compatible, but the package change from 6-XFDFN to 8-XFDFN requires PCB layout redesign. Pin assignments and footprint dimensions differ between the two packages.

Q: What is the impact of the higher quiescent current (140 µA versus 100 µA) in the substitute part?

A: The 40 µA increase in quiescent current has minimal impact on most applications. This difference becomes relevant only in ultra-low-power standby scenarios where every microamp matters.

Q: Does the substitute part's higher current rating (300mA) affect thermal performance?

A: The higher current capability may result in increased power dissipation under full-load conditions. Thermal analysis specific to your application load profile is necessary to confirm adequate heat dissipation with the new package geometry.

Q: Are both parts suitable for the same operating temperature range?

A: Yes, both parts operate across the identical temperature range of -40°C to 85°C, maintaining specification compliance across all environmental conditions.

Q: What is the significance of the additional Current Limit control feature in the substitute part?

A: The AP7345D-3028RH4-7 includes integrated current limiting protection, providing enhanced fault tolerance compared to the original part's over-current protection alone.