AP7315D-185FS4-7B Equivalent & Substitute Parts

Part Overview

The AP7315D-185FS4-7B is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. This device delivers a fixed positive output of 1.85V at 150mA with a maximum dropout voltage of 0.44V, designed for surface mount applications in the 4-XDFN Exposed Pad package. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Linear regulators of this specification are essential in applications requiring stable, low-noise voltage regulation for sensitive analog circuits, microcontroller power supplies, and sensor interfaces where dropout voltage and quiescent current characteristics are critical design parameters.

Substiute Parts

AP7315D-185FS4-7B

Diodes IncorporatedIn Stock: 715AP7315D-185FS4-7B Datasheet

Current PartRFQ

AP7315-185FS4-7B

Diodes IncorporatedIn Stock: 963AP7315-185FS4-7B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP7315D-185FS4-7B is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 1.85V
• Output current rating of 150mA
• Maximum input voltage of 5.25V
• Dropout voltage specification of 0.44V @ 150mA
• Quiescent current of 60 µA
• PSRR of 75dB (1kHz)
• Package configuration: 4-XDFN Exposed Pad (X2-DFN1010-4)
• Operating temperature range: -40°C ~ 85°C
• Over Current protection feature
• Active product status with ROHS3 compliance

Only parts meeting all these electrical and mechanical specifications qualify as direct parametric equivalents. Substitutes must maintain identical performance characteristics to ensure functional compatibility without circuit redesign or validation.

Parameter Comparison

Engineering Selection Recommendations

Both the AP7315D-185FS4-7B and AP7315-185FS4-7B are active production parts from Diodes Incorporated with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability and supply chain considerations. The AP7315-185FS4-7B currently maintains higher inventory levels (856 Pcs) compared to the AP7315D-185FS4-7B (688 Pcs). Both parts carry ROHS3 compliance and REACH Unaffected status, meeting regulatory requirements for industrial and commercial applications. The MSL 1 (Unlimited) rating indicates no moisture sensitivity constraints during storage and handling. Either part is suitable for direct substitution in applications requiring a 1.85V, 150mA linear regulator with the specified performance characteristics.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the AP7315D-185FS4-7B?

A: Direct substitution requires identical electrical parameters including output voltage (1.85V), output current (150mA), dropout voltage (0.44V @ 150mA), quiescent current (60 µA), PSRR (75dB at 1kHz), and package configuration (4-XDFN Exposed Pad). All parameters must match exactly for functional equivalence.

Q: Are the AP7315D-185FS4-7B and AP7315-185FS4-7B interchangeable?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, package type, and performance characteristics. They are direct pin-for-pin and functional replacements.

Q: Does package type affect substitution eligibility?

A: Yes. The 4-XDFN Exposed Pad (X2-DFN1010-4) package is a critical specification. Substitutes must use the identical package configuration to ensure PCB layout compatibility and thermal performance.

Q: What is the significance of the 0.44V dropout voltage specification?

A: Dropout voltage determines the minimum input-to-output voltage differential required for proper regulation. At 150mA output current, this regulator requires a minimum 0.44V differential between input and output. This parameter is critical for applications with limited input voltage headroom.

Q: Are there compliance or certification differences between the substitute parts?

A: No. Both parts maintain identical ROHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental compliance is equivalent.

Q: What is the operating temperature range for these regulators?

A: Both parts operate across -40°C to 85°C. This range is suitable for industrial and commercial temperature environments. Applications requiring extended temperature ranges would require alternative part selection.