AP7343-11FS4-7B Equivalent & Substitute Parts

Part Overview

The AP7343-11FS4-7B is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. This device delivers a fixed positive output of 1.1V at 300mA with integrated enable control and over-current protection. The part is currently in active production status with 1091 units available in stock. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity for applications requiring 1.1V regulated output in the 4-XDFN package format.

Substiute Parts

AP7343-11FS4-7B

Diodes IncorporatedIn Stock: 1121AP7343-11FS4-7B Datasheet

Current PartRFQ

AP7341-11FS4-7

Diodes IncorporatedIn Stock: 645AP7341-11FS4-7 Datasheet

Parametric EquivalentRFQ

AP7341D-11FS4-7

Diodes IncorporatedIn Stock: 30340AP7341D-11FS4-7 Datasheet

Parametric EquivalentRFQ

AP7343D-11FS4-7B

Diodes IncorporatedIn Stock: 10396AP7343D-11FS4-7B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP7343-11FS4-7B is determined by the following critical parameters:

• Fixed output voltage of 1.1V
• Output current rating of 300mA
• Maximum input voltage of 5.25V
• Package format: 4-XDFN Exposed Pad (X2-DFN1010-4)
• Surface mount configuration
• Enable control feature
• Over-current protection
• Operating temperature range: -40°C ~ 85°C
• Active product status
• ROHS3 compliance

Parts meeting all these criteria are classified as parametric equivalents. Variations in voltage dropout and quiescent current do not disqualify substitution when the functional output specifications remain identical.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the AP7343-11FS4-7B. Selection between equivalent parts should be based on inventory availability and specific application requirements regarding voltage dropout and quiescent current performance.

AP7341-11FS4-7 and AP7341D-11FS4-7 offer reduced voltage dropout (0.65V vs. 0.7V) and lower quiescent current (50 µA vs. 60 µA), providing improved efficiency in power-constrained applications. AP7343D-11FS4-7B maintains identical electrical characteristics to the main part number.

Frequently Asked Questions (FAQ)

Q: Can AP7341-11FS4-7 replace AP7343-11FS4-7B in my design?

A: Yes. Both parts deliver 1.1V at 300mA in the same 4-XDFN package with identical control features and protection. The AP7341 variant exhibits lower voltage dropout (0.65V vs. 0.7V) and quiescent current (50 µA vs. 60 µA), making it suitable for equivalent or improved performance in the same circuit topology.

Q: What is the difference between AP7343-11FS4-7B and AP7343D-11FS4-7B?

A: Both parts are electrically identical with matching voltage dropout (0.7V) and quiescent current (60 µA). The designation difference reflects manufacturing or packaging variants within the Diodes Incorporated product line. Both are ROHS3 compliant and active status.

Q: Are all substitute parts in the same package?

A: Yes. All listed equivalents use the 4-XDFN Exposed Pad package (X2-DFN1010-4) with surface mount configuration, ensuring direct PCB layout compatibility.

Q: Which substitute part has the highest inventory availability?

A: AP7341D-11FS4-7 has 30,300 units in stock, providing the highest supply availability among all listed equivalents.

Q: Do voltage dropout differences affect circuit design?

A: Voltage dropout differences (0.65V vs. 0.7V) are minor and do not require circuit redesign. Both values fall within typical linear regulator performance ranges for 1.1V output applications. Selection should be based on application power budget requirements.