AP7342-3328FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7342-3328FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for dual-output power management applications. This device provides positive fixed outputs at 2.8V and 3.3V with 150mA per channel, housed in a 6-pin X2-DFN1212-6 package. The part is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for applications requiring dual-output linear regulation.

Key Parameters

Parameter	Value
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Output Configuration	Positive Fixed
Number of Regulators	2
Voltage - Output (Min/Fixed)	2.8V, 3.3V
Current - Output	150mA per channel
Voltage - Input (Max)	5.25V
Voltage Dropout (Max)	0.3V @ 150mA, 0.29V @ 150mA
Operating Temperature	-40°C ~ 85°C
Package / Case	6-XFDFN Exposed Pad
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the AP7342-3328FS6-7 is determined by the following critical parameters:

Dual positive fixed output configuration at 2.8V and 3.3V
Output current capability per channel
Maximum input voltage of 5.25V
Voltage dropout characteristics
Operating temperature range of -40°C to 85°C
Surface mount packaging with exposed pad
RoHS3 compliance and MSL Level 1 rating

The AP7345D-3328RH4-7 qualifies as a substitute based on matching output voltage levels, input voltage specification, operating temperature range, compliance certifications, and surface mount technology. The substitute provides enhanced current capability (300mA per channel versus 150mA), lower quiescent current, and additional protection features, making it suitable for applications requiring higher output current or improved performance margins.

Parameter Comparison

Parameter	AP7342-3328FS6-7	AP7345D-3328RH4-7
Manufacturer	Diodes Incorporated	Diodes Incorporated
Product Status	Last Time Buy	Active
Output Configuration	Positive Fixed	Positive Fixed
Number of Regulators	2	2
Voltage - Output (Min/Fixed)	2.8V, 3.3V	3.3V, 2.8V
Voltage - Input (Max)	5.25V	5.25V
Current - Output	150mA, 150mA	300mA, 300mA
Voltage Dropout (Max)	0.3V @ 150mA, 0.29V @ 150mA	0.29V @ 300mA, 0.3V @ 300mA
Current - Quiescent (Iq)	100 µA	140 µA
PSRR	75dB (1kHz)	75dB (1kHz)
Control Features	Enable	Current Limit, Enable
Protection Features	Over Current	Short Circuit
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C (TA)
Package / Case	6-XFDFN Exposed Pad	8-XFDFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

The AP7345D-3328RH4-7 is the manufacturer-recommended substitute for the AP7342-3328FS6-7. Both devices maintain identical output voltage specifications, input voltage limits, and operating temperature ranges. The substitute part carries Active product status, ensuring continued availability and support, whereas the original part is designated Last Time Buy.

Selection of the substitute is supported by:

Matching dual-output voltage configuration (2.8V and 3.3V)
Identical maximum input voltage (5.25V)
Identical operating temperature range (-40°C to 85°C)
ROHS3 compliance and MSL Level 1 rating on both parts
Enhanced current capability (300mA versus 150mA per channel) providing design margin
Improved protection features (Short Circuit protection in addition to Over Current)

The substitute requires PCB layout modification due to package change from 6-pin to 8-pin X2-DFN format. Pin configuration and functional mapping must be verified against device datasheets prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the AP7345D-3328RH4-7 directly replace the AP7342-3328FS6-7 without PCB modification?

A: No. The substitute uses an 8-pin X2-DFN1612-8 package versus the original 6-pin X2-DFN1212-6 package. PCB layout changes are required. Pin assignments and functional mapping must be verified in the respective datasheets.

Q: What are the key differences in electrical performance?

A: The substitute provides doubled output current capability (300mA per channel versus 150mA). Quiescent current increases from 100 µA to 140 µA. Voltage dropout characteristics remain comparable. Both devices maintain 75dB PSRR at 1kHz.

Q: Are both parts RoHS compliant?

A: Yes. Both the AP7342-3328FS6-7 and AP7345D-3328RH4-7 are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: Why is the original part designated Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this product line. The AP7345D-3328RH4-7 is the active replacement offering improved specifications and continued support.

Q: Are the output voltage levels identical between both parts?

A: Yes. Both devices provide fixed dual outputs at 2.8V and 3.3V with identical maximum input voltage of 5.25V.

Q: What protection features does each part provide?

A: The AP7342-3328FS6-7 includes Over Current protection. The AP7345D-3328RH4-7 includes Short Circuit protection and Current Limit control features, providing enhanced circuit protection.

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