AP7341-28FS4-7 Equivalent & Substitute Parts

Part Overview

The AP7341-28FS4-7 is a linear voltage regulator IC manufactured by Diodes Incorporated, delivering a fixed 2.8V output at 300mA in a 4-XDFN surface mount package. This device is classified as active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching output voltage, package compatibility, and electrical performance within acceptable parameter ranges for this power management application.

Key Parameters

Parameter	Value
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Output Voltage (Fixed)	2.8V
Output Current	300mA
Input Voltage (Max)	5.25V
Voltage Dropout (Max)	0.65V @ 300mA
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 are grouped into two categories based on electrical and mechanical compatibility:

Parametric Equivalents (Diodes Incorporated AP7341/AP7343 Series): Parts AP7341D-28FS4-7, AP7343-28FS4-7B, and AP7343D-28FS4-7B maintain identical output voltage (2.8V), package format (4-XDFN Exposed Pad), and mounting type (Surface Mount). These parts are direct substitutes where output current capability and voltage dropout characteristics are within acceptable ranges for the application. The AP7343 variants feature improved dropout voltage (0.3V @ 300mA vs. 0.65V), making them suitable for lower input voltage applications.

Manufacturer Recommended Alternatives (onsemi NCP160/NCP161 Series and Rohm BU28TD2WNVX-TL): These parts share the fixed 2.8V output voltage, 4-XDFN package format, and surface mount configuration. Selection depends on output current requirements and operating temperature range. The NCP160AMX280TBG supports 250mA output, while NCP161AMX280TBG and NCP161BMX280TBG support 450mA output. The BU28TD2WNVX-TL from Rohm Semiconductor provides 200mA output with enhanced protection features.

Key parameters determining substitution eligibility:

Output voltage: 2.8V (fixed)
Package: 4-XDFN Exposed Pad or equivalent footprint
Mounting: Surface Mount
Output current: 200mA minimum (application dependent)
Operating temperature: -40°C minimum to 85°C minimum

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage @ Rated Current	Package	Operating Temp	Inventory
AP7341-28FS4-7	Diodes Incorporated	2.8V	300mA	5.25V	0.65V @ 300mA	4-XDFN Exposed Pad	-40°C ~ 85°C	1,081 Pcs
AP7341D-28FS4-7	Diodes Incorporated	2.8V	300mA	5.25V	0.65V @ 300mA	4-XDFN Exposed Pad	-40°C ~ 85°C	125,100 Pcs
AP7343-28FS4-7B	Diodes Incorporated	2.8V	300mA	5.25V	0.3V @ 300mA	4-XDFN Exposed Pad	-40°C ~ 85°C	1,133 Pcs
AP7343D-28FS4-7B	Diodes Incorporated	2.8V	300mA	5.25V	0.3V @ 300mA	4-XDFN Exposed Pad	-40°C ~ 85°C	400,100 Pcs
BU28TD2WNVX-TL	Rohm Semiconductor	2.8V	200mA	6V	0.5V @ 200mA	4-UDFN Exposed Pad	-40°C ~ 85°C	215,300 Pcs
NCP160AMX280TBG	onsemi	2.8V	250mA	5.5V	0.16V @ 250mA	4-XDFN Exposed Pad	-40°C ~ 125°C	50,100 Pcs
NCP161AMX280TBG	onsemi	2.8V	450mA	5.5V	0.29V @ 450mA	4-XDFN Exposed Pad	-40°C ~ 125°C	1,960 Pcs
NCP161BMX280TBG	onsemi	2.8V	450mA	5.5V	0.29V @ 450mA	4-XDFN Exposed Pad	-40°C ~ 125°C	6,573 Pcs

Engineering Selection Recommendations

Direct Substitution (Same Electrical Performance): AP7341D-28FS4-7 is a direct parametric equivalent with identical electrical specifications. This part is preferred for high-volume applications due to superior inventory availability (125,100 units).

Improved Performance Substitution: AP7343-28FS4-7B and AP7343D-28FS4-7B offer reduced dropout voltage (0.3V vs. 0.65V), enabling operation at lower input voltages or higher efficiency in power-constrained applications. AP7343D-28FS4-7B is recommended for new designs requiring extended inventory support (400,100 units available).

Cross-Manufacturer Alternatives: onsemi NCP160AMX280TBG and NCP161 series parts provide superior PSRR performance (91dB ~ 48dB vs. 75dB) and extended operating temperature range (-40°C ~ 125°C). NCP161AMX280TBG and NCP161BMX280TBG support higher output current (450mA) for applications requiring increased load capability. NCP160AMX280TBG is suitable for 250mA applications with exceptional dropout voltage (0.16V @ 250mA).

Alternative Manufacturer Option: Rohm Semiconductor BU28TD2WNVX-TL provides 200mA output with integrated over-temperature protection. This part is applicable only where output current requirements do not exceed 200mA.

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 rating, and active product status.

Frequently Asked Questions (FAQ)

Q: Can AP7341D-28FS4-7 replace AP7341-28FS4-7 without design changes? A: Yes. AP7341D-28FS4-7 is a parametric equivalent with identical electrical specifications and package format. No circuit modifications are required.

Q: What is the advantage of AP7343-28FS4-7B over AP7341-28FS4-7? A: AP7343-28FS4-7B features reduced dropout voltage (0.3V vs. 0.65V @ 300mA), enabling operation with lower input voltages or improved power efficiency. Both parts maintain identical output voltage and current ratings.

Q: Are onsemi NCP160AMX280TBG and NCP161AMX280TBG pin-compatible with AP7341-28FS4-7? A: Both parts use the 4-XDFN Exposed Pad package with identical pinout and footprint. Pin compatibility is confirmed. Verify quiescent current and PSRR specifications for your application requirements.

Q: Can NCP161AMX280TBG be used in place of AP7341-28FS4-7 if the application only requires 300mA output? A: Yes. NCP161AMX280TBG supports 450mA output, exceeding the 300mA requirement. The part operates within specification at reduced load current. Extended operating temperature range (-40°C ~ 125°C) provides additional margin.

Q: What is the difference between NCP161AMX280TBG and NCP161BMX280TBG? A: Both parts are electrically identical with matching output voltage, current rating, dropout voltage, and protection features. Selection is based on inventory availability and packaging preference (both supplied in Tape & Reel).

Q: Is BU28TD2WNVX-TL suitable for 300mA applications? A: No. BU28TD2WNVX-TL is rated for 200mA maximum output current. Use only in applications requiring 200mA or less.

Q: Do all substitute parts maintain the same operating temperature range as AP7341-28FS4-7? A: AP7341-28FS4-7, AP7341D-28FS4-7, AP7343-28FS4-7B, and AP7343D-28FS4-7B operate at -40°C ~ 85°C. onsemi NCP160 and NCP161 series parts support extended range (-40°C ~ 125°C). BU28TD2WNVX-TL operates at -40°C ~ 85°C.

Q: Are all recommended substitutes ROHS3 compliant? A: Yes. All parts listed are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message