AP7341D-25FS4-7 Equivalent & Substitute Parts

Part Overview

The AP7341D-25FS4-7 is a linear voltage regulator IC from Diodes Incorporated, delivering a fixed 2.5V output at 300mA with a maximum dropout voltage of 0.65V. This device operates across the temperature range of -40°C to 85°C and is housed in a 4-XDFN Exposed Pad package. The part is currently in active production status and ROHS3 compliant.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design optimization requires alternative performance characteristics while maintaining functional compatibility within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	300mA
Voltage Dropout (Max)	0.65V @ 300mA
Input Voltage (Max)	5.25V
Quiescent Current	50 µA
PSRR	75dB (1kHz)
Operating Temperature	-40°C ~ 85°C
Package	4-XDFN Exposed Pad
Control Features	Enable
Protection Features	Over Current

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical or functionally equivalent electrical specifications across all critical parameters: output voltage (2.5V fixed), output current capability (300mA), package type (4-XDFN Exposed Pad), control features (Enable), and protection features (Over Current). These parts are direct functional replacements with no design modifications required.

Manufacturer Recommended Alternatives provide equivalent output voltage and current capability but may differ in dropout voltage, quiescent current, PSRR, operating temperature range, package variant, or protection feature set. These parts require design review to confirm compatibility with specific application requirements.

Key parameters determining substitution eligibility:

Output voltage: 2.5V fixed
Output current: 300mA minimum
Package type: 4-XDFN or compatible surface mount
Control features: Enable function
Operating temperature: -40°C minimum to 85°C minimum

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Dropout (Max)	Input Voltage (Max)	Iq	PSRR	Temp Range	Package	Status
AP7341D-25FS4-7	Diodes Incorporated	2.5V	300mA	0.65V @ 300mA	5.25V	50 µA	75dB (1kHz)	-40°C ~ 85°C	4-XDFN	Active
AP7341-25FS4-7	Diodes Incorporated	2.5V	300mA	0.65V @ 300mA	5.25V	50 µA	75dB (1kHz)	-40°C ~ 85°C	4-XDFN	Active
AP7343D-25FS4-7B	Diodes Incorporated	2.5V	300mA	0.3V @ 300mA	5.25V	60 µA	75dB (1kHz)	-40°C ~ 85°C	4-XDFN	Active
BU25UA3WNVX-TL	Rohm Semiconductor	2.5V	300mA	0.22V @ 300mA	5.5V	90 µA	70dB (1kHz)	-40°C ~ 85°C	4-UDFN	Not For New Designs
LP5907SNX-2.5/NOPB	Texas Instruments	2.5V	250mA	0.25V @ 250mA	5.5V	25 µA	90dB ~ 60dB (100Hz ~ 100kHz)	-40°C ~ 125°C	4-XDFN	Active
NCP161BMX250TBG	onsemi	2.5V	450mA	0.315V @ 450mA	5.5V	23 µA	91dB ~ 48dB (100Hz ~ 100kHz)	-40°C ~ 125°C	4-XDFN	Active

Engineering Selection Recommendations

AP7341-25FS4-7 and AP7343D-25FS4-7B are parametric equivalents from Diodes Incorporated with identical output voltage and current specifications. Both parts are ROHS3 compliant and carry active product status. The AP7343D-25FS4-7B offers improved dropout voltage performance (0.3V versus 0.65V) and higher inventory availability, making it suitable for applications where lower power dissipation is beneficial.

NCP161BMX250TBG from onsemi provides higher output current capability (450mA) with superior dropout voltage (0.315V) and lower quiescent current (23 µA). This part maintains the 4-XDFN package footprint and extends the operating temperature range to 125°C. Active product status and ROHS3 compliance confirm long-term availability.

LP5907SNX-2.5/NOPB from Texas Instruments delivers lower quiescent current (25 µA) and superior PSRR performance (90dB ~ 60dB across 100Hz to 100kHz). Output current is rated at 250mA, which is below the primary part specification. Extended temperature range to 125°C and active status support production applications.

BU25UA3WNVX-TL from Rohm Semiconductor carries "Not For New Designs" status, indicating this part is not recommended for new product development despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can AP7341-25FS4-7 directly replace AP7341D-25FS4-7?

A: Yes. Both parts share identical electrical specifications, output voltage (2.5V), output current (300mA), dropout voltage (0.65V @ 300mA), quiescent current (50 µA), and package type (4-XDFN Exposed Pad). The parts are functionally interchangeable with no design modifications required.

Q: What is the primary difference between AP7341D-25FS4-7 and AP7343D-25FS4-7B?

A: The AP7343D-25FS4-7B features improved dropout voltage performance (0.3V versus 0.65V at 300mA output), resulting in lower power dissipation and reduced thermal load. Quiescent current is slightly higher (60 µA versus 50 µA). Both maintain identical output voltage, current rating, and package specifications.

Q: Is NCP161BMX250TBG suitable as a substitute for the AP7341D-25FS4-7?

A: NCP161BMX250TBG provides higher output current capability (450mA versus 300mA) and superior dropout voltage (0.315V), making it functionally compatible for applications requiring the specified 2.5V output. The 4-XDFN package footprint is identical. Extended temperature range (-40°C to 125°C) and active product status support production use. Design review is recommended to confirm compatibility with specific application requirements.

Q: Why is LP5907SNX-2.5/NOPB listed as an alternative if output current is only 250mA?

A: LP5907SNX-2.5/NOPB meets the 2.5V output voltage requirement and provides superior quiescent current performance (25 µA) and PSRR characteristics (90dB ~ 60dB). The 250mA output current rating is below the primary part specification. This part is suitable only for applications where output current requirements do not exceed 250mA.

Q: Should BU25UA3WNVX-TL be used in new designs?

A: No. BU25UA3WNVX-TL carries "Not For New Designs" product status. While electrical specifications are compatible with the AP7341D-25FS4-7, this designation indicates the manufacturer does not recommend this part for new product development. Existing designs may continue using this part, but new applications should select from active-status alternatives.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the primary part specification.

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