AP7340-30FS4-7 Equivalent & Substitute Parts

Part Overview

The AP7340-30FS4-7 is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. It delivers a fixed 3V output at 150mA with a maximum dropout voltage of 0.27V, designed for surface mount applications in the 4-XDFN package. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design flexibility, or application-specific requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	AP7340-30FS4-7
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Output Voltage (Fixed)	3V
Output Current	150mA
Input Voltage (Max)	5.25V
Dropout Voltage (Max)	0.27V @ 150mA
Quiescent Current	50 µA
Package / Case	4-XDFN Exposed Pad
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the AP7340-30FS4-7 are classified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Output voltage: 3V fixed
Output current capability: 150mA minimum
Input voltage tolerance: 5.25V to 6V maximum
Dropout voltage: ≤0.67V @ rated current
Package type: 4-pin surface mount (XDFN or UDFN variants)
Operating temperature range: -40°C to 85°C minimum
Control features: Enable function required
Protection: Over current protection minimum

Substitute Categories:

Parametric Equivalent (Same Manufacturer): AP7340D-30FS4-7 maintains identical electrical specifications and package configuration, differing only in tape & reel quantity and supplier device package designation.

Manufacturer Recommended Substitutes: BU30TD2WNVX-TL (Rohm Semiconductor), MCP1711T-30I/5X (Microchip Technology), and NCP161AMX300TBG (onsemi) meet or exceed the core electrical requirements while offering variations in output current capability, dropout voltage performance, and quiescent current characteristics.

Parameter Comparison

Parameter	AP7340-30FS4-7	AP7340D-30FS4-7	BU30TD2WNVX-TL	MCP1711T-30I/5X	NCP161AMX300TBG
Manufacturer	Diodes Inc.	Diodes Inc.	Rohm Semi.	Microchip	onsemi
Output Voltage	3V	3V	3V	3V	3V
Output Current	150mA	150mA	200mA	150mA	450mA
Input Voltage (Max)	5.25V	5.25V	6V	6V	5.5V
Dropout Voltage (Max)	0.27V @ 150mA	0.27V @ 150mA	0.46V @ 200mA	0.67V @ 150mA	0.275V @ 450mA
Quiescent Current	50 µA	50 µA	60 µA	1.27 µA	23 µA
Package / Case	4-XDFN Exposed Pad	4-XDFN Exposed Pad	4-UDFN Exposed Pad	4-UDFN Exposed Pad	4-XDFN Exposed Pad
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C
Control Features	Enable	Enable	Enable	Enable	Enable
Protection Features	Over Current	Over Current	Over Current, Over Temperature	—	Over Current, Over Temperature, Soft Start
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full RoHS3 compliance, meeting regulatory requirements for new designs and production environments.

AP7340D-30FS4-7 is the direct parametric equivalent from the same manufacturer, offering identical electrical specifications and package configuration. Selection is appropriate when maintaining single-source supplier strategy or when inventory of the original part number is temporarily unavailable.

BU30TD2WNVX-TL (Rohm Semiconductor) provides increased output current capability at 200mA with slightly higher dropout voltage of 0.46V. The 4-UDFN package is mechanically compatible with the original 4-XDFN footprint for most PCB layouts. This substitute is suitable for applications requiring higher current delivery within the same voltage class.

MCP1711T-30I/5X (Microchip Technology) delivers significantly lower quiescent current at 1.27 µA, beneficial for battery-powered or ultra-low-power applications. The higher dropout voltage of 0.67V @ 150mA requires verification against input voltage headroom in the target circuit. The 4-UDFN package maintains mechanical compatibility.

NCP161AMX300TBG (onsemi) offers the highest output current capability at 450mA with the lowest dropout voltage of 0.275V @ 450mA and extended operating temperature range to 125°C. The 4-XDFN package matches the original footprint exactly. Additional protection features include over temperature and soft start functionality. This substitute is appropriate for applications requiring higher current capacity or enhanced thermal performance.

Frequently Asked Questions (FAQ)

Q: Can AP7340D-30FS4-7 be used as a direct replacement for AP7340-30FS4-7?

A: Yes. Both parts are manufactured by Diodes Incorporated with identical electrical specifications, output voltage, current rating, dropout voltage, and package configuration. The difference is in tape & reel quantity and supplier device package designation. No circuit modifications are required.

Q: What are the package compatibility considerations when substituting with BU30TD2WNVX-TL or MCP1711T-30I/5X?

A: Both parts use the 4-UDFN package instead of the original 4-XDFN. While the pin count and exposed pad configuration are compatible, the physical footprint dimensions differ slightly. PCB layout verification is necessary to confirm pad alignment and thermal performance. Consult the respective datasheets for precise package dimensions.

Q: Is NCP161AMX300TBG suitable for all applications using AP7340-30FS4-7?

A: NCP161AMX300TBG is electrically compatible and offers superior performance in output current (450mA vs. 150mA), dropout voltage (0.275V vs. 0.27V), and operating temperature range (-40°C to 125°C vs. -40°C to 85°C). The 4-XDFN package matches the original footprint. However, the higher current capability and additional protection features may introduce different thermal characteristics. Circuit validation is recommended for critical applications.

Q: Which substitute offers the lowest power consumption in standby mode?

A: MCP1711T-30I/5X has the lowest quiescent current at 1.27 µA, compared to 50 µA for the original AP7340-30FS4-7. This makes it the preferred choice for battery-powered or energy-harvesting applications where standby current is a critical design parameter.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts—AP7340D-30FS4-7, BU30TD2WNVX-TL, MCP1711T-30I/5X, and NCP161AMX300TBG—are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), meeting regulatory requirements for current manufacturing standards.

Q: What is the primary difference between BU30TD2WNVX-TL and the original part?

A: BU30TD2WNVX-TL increases output current capability to 200mA (vs. 150mA) and maximum input voltage to 6V (vs. 5.25V). The dropout voltage is slightly higher at 0.46V @ 200mA. The 4-UDFN package differs from the original 4-XDFN, requiring PCB layout verification.

Q: Can MCP1711T-30I/5X be used in high-current applications?

A: No. MCP1711T-30I/5X maintains the same 150mA output current rating as the original part. For applications requiring higher current delivery, NCP161AMX300TBG (450mA) or BU30TD2WNVX-TL (200mA) are appropriate alternatives.

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