BD2055AFJ-E2 Equivalent & Substitute Parts

Part Overview

The BD2055AFJ-E2 is a Power Switch/Driver IC manufactured by Rohm Semiconductor, designed for high-side N-channel switching applications with 250mA output capability. This component operates across a 2.7V to 5.5V load voltage range and integrates current limiting, over-temperature, reverse current, and UVLO fault protection. The device is classified as Not For New Designs, making identification of active equivalent alternatives essential for ongoing production and maintenance applications.

Substiute Parts

BD2055AFJ-E2

Rohm SemiconductorIn Stock: 15653BD2055AFJ-E2 Datasheet

Current PartRFQ

TPS2055AD

Texas InstrumentsIn Stock: 1565TPS2055AD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BD2055AFJ-E2 is determined by the following critical parameters:

• Output Configuration & Type: High-side N-channel switching topology
• Load Voltage Range: 2.7V to 5.5V compatibility
• Maximum Output Current: 250mA rating
• On-Resistance: 80mOhm typical value
• Fault Protection Features: Current limiting, over-temperature, and UVLO protection
• Package Compatibility: 8-SOIC form factor with identical pin pitch and dimensions
• Compliance Standards: ROHS3 compliance and equivalent regulatory status

The TPS2055AD from Texas Instruments meets all electrical and mechanical substitution criteria, with the exception of operating temperature range and switch type classification. Both devices share identical load voltage specifications, output current ratings, on-resistance characteristics, and package geometry.

Parameter Comparison

Engineering Selection Recommendations

The TPS2055AD qualifies as a functional substitute for the BD2055AFJ-E2 based on matching electrical specifications and package geometry. The TPS2055AD maintains active product status with Texas Instruments, providing supply continuity for applications requiring this switching topology.

Substitution considerations:

• Operating Temperature Range: The TPS2055AD operates from 0°C to 85°C, compared to the BD2055AFJ-E2 range of -40°C to 85°C. Applications requiring operation below 0°C require the original BD2055AFJ-E2 or alternative components with extended low-temperature ratings.

• Fault Protection Differences: The BD2055AFJ-E2 includes reverse current protection not specified for the TPS2055AD. Applications dependent on this protection feature must evaluate circuit-level alternatives or confirm TPS2055AD reverse current behavior through Texas Instruments technical documentation.

• Compliance & Certifications: Both devices maintain ROHS3 compliance and equivalent regulatory status, supporting direct substitution in compliant applications.

Frequently Asked Questions (FAQ)

Q: Can the TPS2055AD replace the BD2055AFJ-E2 in all applications?

A: The TPS2055AD is electrically and mechanically compatible for applications operating between 0°C and 85°C with load voltages of 2.7V to 5.5V and output currents up to 250mA. Applications requiring operation below 0°C or dependent on reverse current protection require evaluation of alternative components.

Q: Are the package dimensions identical between these devices?

A: Both devices use the 8-SOIC package with 0.154" width and 3.90mm dimensions. Pin pitch and footprint are identical, supporting direct PCB layout compatibility without redesign.

Q: What is the difference in fault protection between these parts?

A: The BD2055AFJ-E2 integrates current limiting, over-temperature, reverse current, and UVLO protection. The TPS2055AD provides current limiting, over-temperature, and UVLO protection. Reverse current protection is not specified for the TPS2055AD.

Q: Why is the BD2055AFJ-E2 marked as Not For New Designs?

A: This designation indicates the component is in mature or end-of-life status with the manufacturer. The TPS2055AD, with active product status, represents the recommended alternative for new design implementations.

Q: Are there compliance or certification differences between these parts?

A: Both devices maintain ROHS3 compliance, REACH unaffected status, and equivalent regulatory classifications. No compliance barriers exist for direct substitution in regulated applications.