AP7346D-2818FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7346D-2818FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for dual-output power management applications. This device provides positive fixed voltage outputs of 1.8V and 2.8V, each delivering 130mA of output current. The part is classified as Last Time Buy, indicating limited availability and the necessity to identify equivalent or substitute components for ongoing design requirements and production planning.

Substiute Parts

AP7346D-2818FS6-7

Diodes IncorporatedIn Stock: 8643AP7346D-2818FS6-7 Datasheet

Current PartRFQ

AP7345D-2818RH4-7

Diodes IncorporatedIn Stock: 729AP7345D-2818RH4-7 Datasheet

MFR RecommendedRFQ

AP7346D-1828FS6-7

Diodes IncorporatedIn Stock: 10061AP7346D-1828FS6-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP7346D-2818FS6-7 are identified based on the following critical parameters that determine functional compatibility:

Output Voltage Configuration: The main part provides fixed dual outputs of 1.8V and 2.8V. Substitutes must maintain these exact voltage levels or provide equivalent voltage outputs in the same configuration.

Output Current Capability: The main part delivers 130mA per output. Substitutes with equal or greater current capacity are acceptable for direct replacement.

Input Voltage Range: Maximum input voltage of 5.25V is a defining constraint. Substitutes must support this input specification.

Voltage Dropout Characteristics: Dropout voltage specifications at rated current determine performance in low-headroom applications. Substitutes must meet or exceed dropout performance.

Package and Mounting: The 6-XFDFN Exposed Pad package defines the physical footprint. Substitutes with different packages require PCB redesign and are classified separately.

Control and Protection Features: Enable control and over-current protection are functional requirements. Substitutes must provide equivalent or enhanced protection capabilities.

Compliance and Environmental Ratings: RoHS3 compliance, MSL rating, and operating temperature range must be maintained for regulatory and reliability requirements.

Parameter Comparison

Engineering Selection Recommendations

AP7346D-1828FS6-7 (Parametric Equivalent): This part is a parametric equivalent with identical electrical specifications and package configuration. Both devices are Last Time Buy status, indicating similar supply constraints. Selection of this part requires no design modifications and maintains full compatibility with existing PCB layouts and thermal management strategies. Both parts carry ROHS3 compliance and unlimited MSL rating.

AP7345D-2818RH4-7 (MFR Recommended): This part is recommended by the manufacturer as an alternative. It provides enhanced output current capability (300mA per output versus 130mA), improved dropout voltage performance at higher currents, and Active product status ensuring long-term availability. The package differs (8-XFDFN versus 6-XFDFN), requiring PCB redesign. Enhanced protection features include short-circuit protection in addition to over-current protection. Quiescent current is slightly elevated (140 µA versus 100 µA). This substitute is suitable for applications requiring higher current delivery or extended product lifecycle support.

Frequently Asked Questions (FAQ)

Q: Can AP7346D-1828FS6-7 be used as a direct replacement for AP7346D-2818FS6-7?

A: Yes. Both parts are parametrically equivalent with identical output voltages (1.8V and 2.8V), output current ratings (130mA each), dropout voltage specifications, and package configuration (6-XFDFN Exposed Pad). No design modifications are required for direct substitution.

Q: What are the key differences between AP7346D-2818FS6-7 and AP7345D-2818RH4-7?

A: The AP7345D-2818RH4-7 provides higher output current (300mA versus 130mA per output), lower dropout voltage at rated current, enhanced protection features (short-circuit protection), and Active product status. The package is larger (8-XFDFN versus 6-XFDFN), requiring PCB layout changes.

Q: Why is package compatibility important when selecting a substitute?

A: Package differences affect PCB footprint, component placement, thermal dissipation characteristics, and board routing. Substitutes with different packages require PCB redesign, assembly process validation, and thermal analysis before implementation.

Q: Is AP7345D-2818RH4-7 suitable for applications currently using AP7346D-2818FS6-7?

A: AP7345D-2818RH4-7 is suitable for applications where higher output current capability is acceptable or beneficial. The larger package and different pin configuration require PCB redesign. Applications with strict space constraints or existing thermal management designs may require engineering evaluation.

Q: What compliance certifications are maintained across all substitute options?

A: All parts maintain ROHS3 compliance, unlimited MSL rating (1), and operating temperature range of -40°C to 85°C. REACH status is unaffected for all options.

Q: How does product status affect substitute selection?

A: AP7346D-2818FS6-7 and AP7346D-1828FS6-7 are Last Time Buy, indicating limited future availability. AP7345D-2818RH4-7 is Active status, ensuring continued supply and long-term design support. For new designs or extended production runs, Active status parts are preferred.