AP7340-32FS4-7 Equivalent & Substitute Parts

Part Overview

The AP7340-32FS4-7 is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 3.2V output at 150mA. This device operates as a positive fixed output regulator with integrated enable control and over-current protection. The part is currently in active production status with 53,280 units available in inventory. Alternative components may be required due to supply constraints, design optimization, or application-specific performance requirements.

Substiute Parts

AP7340-32FS4-7

Diodes IncorporatedIn Stock: 53302AP7340-32FS4-7 Datasheet

Current PartRFQ

BU32TD2WNVX-TL

Rohm SemiconductorIn Stock: 25382BU32TD2WNVX-TL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP7340-32FS4-7 is determined by the following critical parameters:

• Output Voltage: Must be fixed at 3.2V
• Output Configuration: Must be positive fixed output
• Number of Regulators: Must be single output (1)
• Control Features: Must include Enable function
• Protection Features: Must include Over Current protection
• Operating Temperature Range: Must support -40°C ~ 85°C
• Mounting Type: Must be Surface Mount
• Regulatory Compliance: Must be ROHS3 Compliant and REACH Unaffected

The substitute part BU32TD2WNVX-TL meets all mandatory substitution criteria. While it features a higher output current rating (200mA vs. 150mA) and slightly different package designation (4-UDFN vs. 4-XDFN), these differences represent enhanced capabilities rather than incompatibilities. The maximum input voltage specification differs (6V vs. 5.25V), providing additional design margin.

Parameter Comparison

Engineering Selection Recommendations

Both the AP7340-32FS4-7 and BU32TD2WNVX-TL are active production components with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on availability and application requirements. The BU32TD2WNVX-TL provides higher output current capability (200mA) and additional over-temperature protection, making it suitable for applications requiring enhanced thermal management. The AP7340-32FS4-7 offers lower quiescent current (50 µA vs. 60 µA) and superior PSRR performance (75dB vs. 70dB), advantageous for noise-sensitive applications. Both devices maintain identical output voltage specification and operating temperature range, ensuring functional compatibility in standard linear regulator applications.

Frequently Asked Questions (FAQ)

Q: Can BU32TD2WNVX-TL directly replace AP7340-32FS4-7 in existing designs?

A: Yes. Both devices deliver fixed 3.2V output with enable control and over-current protection across the same operating temperature range. The substitute part's higher current rating and additional over-temperature protection do not create incompatibility. PCB layout considerations for the different package designations (4-XDFN vs. 4-UDFN) must be evaluated during integration.

Q: What is the significance of the different voltage dropout specifications?

A: The AP7340-32FS4-7 specifies 0.27V dropout at 150mA, while BU32TD2WNVX-TL specifies 0.42V dropout at 200mA. Dropout voltage determines the minimum input voltage required to maintain regulated output. Applications with tight input voltage margins should account for this difference during design validation.

Q: Are the package differences between 4-XDFN and 4-UDFN critical?

A: Both packages are 4-pin DFN variants with exposed pads, designed for surface mount assembly. Physical dimensions and thermal characteristics may differ slightly. PCB footprint compatibility must be confirmed before component substitution. Consult manufacturer datasheets for precise package dimensions.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both AP7340-32FS4-7 and BU32TD2WNVX-TL are ROHS3 compliant and REACH unaffected, meeting identical environmental and regulatory standards.

Q: Which part should be selected for low-noise applications?

A: The AP7340-32FS4-7 provides superior PSRR performance at 75dB (1kHz) compared to 70dB for the BU32TD2WNVX-TL, making it preferable for noise-sensitive signal conditioning circuits.