AP7341D-15FS4-7 Equivalent & Substitute Parts

Part Overview

The AP7341D-15FS4-7 is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. This device delivers a fixed positive 1.5V output at 300mA with integrated enable control and over-current protection. The part is in active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the specified parameter ranges for this 4-XDFN surface mount package.

Key Parameters

Parameter	Value
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Output Voltage (Fixed)	1.5V
Output Current	300mA
Input Voltage (Max)	5.25V
Voltage Dropout (Max)	0.47V @ 150mA
Quiescent Current	50 µA
PSRR	75dB (1kHz)
Package / Case	4-XDFN Exposed Pad
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the AP7341D-15FS4-7 are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents (Diodes Incorporated): Parts AP7341-15FS4-7, AP7343-15FS4-7B, and AP7343D-15FS4-7B maintain identical output voltage (1.5V), package type (4-XDFN Exposed Pad), mounting configuration (Surface Mount), and operating temperature range (-40°C ~ 85°C). These parts share the same supplier device package (X2-DFN1010-4) and are direct functional replacements within the AP7341/AP7343 series. Substitution is valid when output current requirements do not exceed 300mA and input voltage remains within 5.25V maximum.

Cross-Manufacturer Alternatives: Parts BU15TD2WNVX-TL (Rohm Semiconductor) and NCP177BMX150TCG (onsemi) provide equivalent 1.5V fixed output with surface mount 4-pin packages and identical operating temperature range. These alternatives are suitable when manufacturer diversification or inventory availability is a selection criterion, provided that output current and voltage dropout specifications align with application requirements.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Voltage Dropout (Max)	Quiescent Current	PSRR	Package	Operating Temp	RoHS Status
AP7341D-15FS4-7	Diodes Inc.	1.5V	300mA	5.25V	0.47V @ 150mA	50 µA	75dB (1kHz)	4-XDFN Exposed Pad	-40°C ~ 85°C	ROHS3
AP7341-15FS4-7	Diodes Inc.	1.5V	300mA	5.25V	0.47V @ 150mA	50 µA	75dB (1kHz)	4-XDFN Exposed Pad	-40°C ~ 85°C	ROHS3
AP7343-15FS4-7B	Diodes Inc.	1.5V	300mA	5.25V	0.44V @ 300mA	60 µA	75dB (1kHz)	4-XDFN Exposed Pad	-40°C ~ 85°C	ROHS3
AP7343D-15FS4-7B	Diodes Inc.	1.5V	300mA	5.25V	0.44V @ 300mA	60 µA	75dB (1kHz)	4-XDFN Exposed Pad	-40°C ~ 85°C	ROHS3
BU15TD2WNVX-TL	Rohm Semiconductor	1.5V	200mA	6V	0.7V @ 200mA	60 µA	70dB (1kHz)	4-UDFN Exposed Pad	-40°C ~ 85°C	ROHS3
NCP177BMX150TCG	onsemi	1.5V	500mA	5.5V	0.38V @ 500mA	90 µA	75dB (1kHz)	4-XDFN Exposed Pad	-40°C ~ 85°C	ROHS3

Engineering Selection Recommendations

Direct Substitution (Diodes Incorporated Series): AP7341-15FS4-7, AP7343-15FS4-7B, and AP7343D-15FS4-7B are qualified substitutes for AP7341D-15FS4-7 in applications requiring 1.5V fixed output at up to 300mA. All parts maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature specifications. The AP7343 variants offer improved voltage dropout performance (0.44V @ 300mA versus 0.47V @ 150mA), making them suitable for lower-headroom supply applications.

Cross-Manufacturer Selection: BU15TD2WNVX-TL is applicable when output current requirements do not exceed 200mA and higher input voltage tolerance (6V maximum) is beneficial. NCP177BMX150TCG is suitable for applications requiring higher output current (500mA) with superior voltage dropout characteristics (0.38V @ 500mA). Both alternatives maintain ROHS3 compliance and identical operating temperature range.

Compliance Basis: All listed substitutes are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating, REACH unaffected status, and EAR99 export classification, matching the regulatory profile of the primary part.

Frequently Asked Questions (FAQ)

Q: Can AP7343-15FS4-7B replace AP7341D-15FS4-7 in all applications? A: Yes, within the specified electrical parameters. Both deliver 1.5V fixed output at 300mA in identical 4-XDFN packages. The AP7343 variant exhibits lower voltage dropout (0.44V @ 300mA), which may improve performance in low-headroom designs.

Q: What is the key difference between Diodes Incorporated substitutes and cross-manufacturer alternatives? A: Diodes Incorporated parts (AP7341/AP7343 series) are pin-compatible with identical package geometry and electrical specifications. Cross-manufacturer alternatives (Rohm, onsemi) provide equivalent 1.5V output but differ in output current ratings and voltage dropout characteristics. Selection depends on current requirements and supply voltage headroom.

Q: Is BU15TD2WNVX-TL suitable for 300mA applications? A: No. BU15TD2WNVX-TL is rated for maximum 200mA output current. Applications requiring 300mA must use AP7341D-15FS4-7, AP7341-15FS4-7, AP7343-15FS4-7B, or AP7343D-15FS4-7B.

Q: Can NCP177BMX150TCG be used as a direct drop-in replacement? A: NCP177BMX150TCG is functionally compatible for 1.5V output applications but offers higher current capability (500mA) and superior dropout performance. Package type is 4-XDFN Exposed Pad, matching the primary part. Verify PCB layout compatibility before substitution.

Q: Are all listed parts ROHS3 compliant? A: Yes. All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, matching the regulatory requirements of AP7341D-15FS4-7.

Q: What determines voltage dropout performance differences? A: Voltage dropout varies by manufacturer design and is specified at different current levels. AP7341D-15FS4-7 specifies 0.47V @ 150mA, while AP7343 variants specify 0.44V @ 300mA. NCP177BMX150TCG achieves 0.38V @ 500mA. Lower dropout is advantageous in applications with limited input voltage headroom.

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