BD8646FV-E2 Equivalent & Substitute Parts

Part Overview

The BD8646FV-E2 is an IC power management component manufactured by Rohm Semiconductor. This part is currently in Last Time Buy status, indicating it is being phased out. Finding qualified substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring equivalent power management functionality.

Substiute Parts

BD8646FV-E2

Rohm SemiconductorIn Stock: 2471BD8646FV-E2 Datasheet

Current PartRFQ

BD9C301FJ-E2

Rohm SemiconductorIn Stock: 7973BD9C301FJ-E2 Datasheet

MFR RecommendedRFQ

BD9D320EFJ-E2

Rohm SemiconductorIn Stock: 7413BD9D320EFJ-E2 Datasheet

MFR RecommendedRFQ

BD9E200FP4-ZTL

Rohm SemiconductorIn Stock: 4391BD9E200FP4-ZTL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Three qualified substitute parts are available from Rohm Semiconductor's active product portfolio:

Substitution Criteria:

• Manufacturer: Rohm Semiconductor (same manufacturer ensures design compatibility and quality consistency)
• Product Status: Active (ensures long-term availability and supply chain stability)
• Function: Step-Down Buck Switching Regulator (core power management topology)
• Output Configuration: Positive Adjustable (functional equivalence)
• Synchronous Rectifier: Yes (efficiency feature parity)
• Operating Temperature Range: -40°C ~ 85°C (thermal compatibility)
• RoHS3 Compliance: All substitutes meet ROHS3 requirements
• Mounting Type: Surface Mount (PCB integration compatibility)

The substitute parts differ in specific electrical parameters (input/output voltage ranges, output current, switching frequency) and package configurations, allowing selection based on application-specific requirements.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are manufactured by Rohm Semiconductor with Active product status, ensuring long-term availability and supply chain continuity. Selection among BD9C301FJ-E2, BD9D320EFJ-E2, and BD9E200FP4-ZTL depends on application-specific electrical requirements:

BD9C301FJ-E2 is suitable for applications requiring 3A output current with input voltage range 4.5V to 18V and output voltage adjustable from 0.8V to 12.6V. This part offers the widest output voltage range among the substitutes and is available in 8-SOIC packaging with ROHS3 compliance.

BD9D320EFJ-E2 provides 3A output current with input voltage range 4.5V to 18V and output voltage adjustable from 0.765V to 7V. This variant features a higher switching frequency of 700kHz and includes an exposed pad for improved thermal management. It is available in 8-SOIC packaging with exposed pad and ROHS3 compliance.

BD9E200FP4-ZTL delivers 2A output current with the highest input voltage range of 4.5V to 26V and output voltage adjustable from 0.7V to 20.8V. This part is packaged in SOT-23-6, offering the smallest footprint. It is suitable for applications with lower current requirements but higher input voltage tolerance.

All substitutes maintain the same operating temperature range (-40°C ~ 85°C) and feature synchronous rectification for efficiency parity with the original part.

Frequently Asked Questions (FAQ)

Q: Can BD9C301FJ-E2, BD9D320EFJ-E2, and BD9E200FP4-ZTL be used interchangeably with BD8646FV-E2?

A: These parts are functionally equivalent as step-down buck switching regulators with positive adjustable output from Rohm Semiconductor. However, they differ in electrical specifications (input/output voltage ranges, output current capacity, switching frequency) and package configurations. Selection must be based on your specific application requirements for input voltage, output voltage, and current demands.

Q: What are the key differences between the three substitute parts?

A: BD9C301FJ-E2 and BD9D320EFJ-E2 both provide 3A output current in 8-SOIC packaging but differ in output voltage range (0.8V-12.6V vs. 0.765V-7V) and switching frequency (500kHz vs. 700kHz). BD9E200FP4-ZTL offers 2A output current in a smaller SOT-23-6 package with the highest input voltage range (up to 26V). Choose based on your current and voltage requirements.

Q: Are all substitute parts RoHS compliant?

A: BD9C301FJ-E2 and BD9D320EFJ-E2 are explicitly ROHS3 compliant. RoHS status for BD9E200FP4-ZTL is not specified in the provided data.

Q: What packaging options are available?

A: BD9C301FJ-E2 is available in Tape & Reel (TR) with 8-SOIC packaging. BD9D320EFJ-E2 is available in Cut Tape (CT) & Digi-Reel® with 8-SOIC packaging and exposed pad. BD9E200FP4-ZTL is available in Tape & Reel (TR) with SOT-23-6 packaging. Package selection affects PCB layout and thermal management considerations.

Q: Which substitute part has the best inventory availability?

A: BD9C301FJ-E2 has the highest inventory at 7900 pieces, followed by BD9D320EFJ-E2 at 7381 pieces, and BD9E200FP4-ZTL at 4281 pieces. All three parts maintain substantial stock levels for production requirements.