AP7346D-3328FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7346D-3328FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for dual-output power management applications. This device provides positive fixed outputs at 2.8V and 3.3V with 130mA per channel, housed in a 6-pin X2-DFN1212-6 surface mount package. The part is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary for design continuity, inventory management, and long-term product support when original stock becomes unavailable.

Substiute Parts

AP7346D-3328FS6-7

Diodes IncorporatedIn Stock: 11086AP7346D-3328FS6-7 Datasheet

Current PartRFQ

AP7345D-3328RH4-7

Diodes IncorporatedIn Stock: 5735AP7345D-3328RH4-7 Datasheet

MFR RecommendedRFQ

AP7346D-2833FS6-7

Diodes IncorporatedIn Stock: 6046AP7346D-2833FS6-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP7346D-3328FS6-7 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Dual-output positive fixed voltage regulator configuration
• Output voltage levels: 2.8V and 3.3V
• Output current capability per channel
• Maximum input voltage: 5.25V
• Dropout voltage performance
• Quiescent current specifications

Mechanical & Packaging Requirements:

• Surface mount technology
• Package form factor compatibility
• Pin count and pinout alignment

Compliance & Status:

• RoHS3 compliance
• Operating temperature range: -40°C ~ 85°C

Two substitute parts are identified:

1. AP7345D-3328RH4-7 (MFR Recommended): Higher current capability (300mA per channel) with enhanced protection features and Active product status. Different package (8-XFDFN).

2. AP7346D-2833FS6-7 (Parametric Equivalent): Identical electrical specifications and package form factor. Output voltage order reversed (2.8V/3.3V vs. 3.3V/2.8V). Last Time Buy status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Package, Same Electrical Specs): AP7346D-2833FS6-7 is the parametric equivalent with identical 6-pin X2-DFN1212-6 packaging and 130mA output current per channel. Both parts share Last Time Buy status. The only functional difference is the output voltage order (2.8V/3.3V vs. 3.3V/2.8V), which requires PCB layout verification to confirm pin assignment compatibility with the original design.

For Higher Current Capability: AP7345D-3328RH4-7 provides 300mA per channel output current with Active product status, ensuring long-term availability. This part includes enhanced protection features (Short Circuit vs. Over Current) and Current Limit control. The 8-pin X2-DFN1612-8 package requires PCB redesign and layout modification. Quiescent current increases to 140 µA. This option is suitable for designs requiring higher current delivery or extended product lifecycle support.

Compliance Considerations: All three parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status. Operating temperature range remains -40°C ~ 85°C across all options.

Frequently Asked Questions (FAQ)

Q: Can AP7346D-2833FS6-7 be used as a direct drop-in replacement? A: AP7346D-2833FS6-7 shares identical electrical specifications and package form factor. However, the output voltage order differs (2.8V/3.3V vs. 3.3V/2.8V). Verify PCB pinout assignments to confirm compatibility before substitution.

Q: What is the primary advantage of AP7345D-3328RH4-7? A: AP7345D-3328RH4-7 offers doubled output current capability (300mA vs. 130mA per channel) and Active product status for long-term availability. It includes Short Circuit protection and Current Limit control features. PCB redesign is required due to package change from 6-pin to 8-pin.

Q: Are all three parts RoHS compliant? A: Yes. AP7346D-3328FS6-7, AP7345D-3328RH4-7, and AP7346D-2833FS6-7 are all ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: What is the difference in quiescent current between the main part and substitutes? A: AP7346D-3328FS6-7 and AP7346D-2833FS6-7 both draw 100 µA quiescent current. AP7345D-3328RH4-7 draws 140 µA due to enhanced control and protection circuitry.

Q: Does package change affect thermal performance? A: AP7345D-3328RH4-7 uses an 8-pin X2-DFN1612-8 package compared to the 6-pin X2-DFN1212-6 of the main part. Package dimensions and thermal characteristics differ. Thermal analysis is required for designs with tight thermal constraints.

Q: Can I use AP7345D-3328RH4-7 in a space-constrained application? A: No. The 8-pin X2-DFN1612-8 package is larger than the 6-pin X2-DFN1212-6. PCB layout modification is necessary, and space availability must be confirmed before substitution.

Q: What protection features does each part provide? A: AP7346D-3328FS6-7 and AP7346D-2833FS6-7 include Over Current protection. AP7345D-3328RH4-7 includes Short Circuit protection with Current Limit control, offering enhanced fault tolerance.