BD9850FVM-TR Equivalent & Substitute Parts

Part Overview

The BD9850FVM-TR is a buck regulator positive output step-down DC-DC controller IC manufactured by ROHM Semiconductor in an 8-MSOP package. This device functions as a transistor driver for step-down topology applications with a single output phase. The product is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and component procurement.

Substiute Parts

BD9850FVM-TR

ROHM SemiconductorIn Stock: 7650BD9850FVM-TR Datasheet

Current PartRFQ

BD9850FVM-TR

ROHM SemiconductorIn Stock: 7650BD9850FVM-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the BD9850FVM-TR is determined by strict equivalence across the following critical parameters:

• Topology & Function: Buck converter controller with step-down positive output configuration
• Output Characteristics: Single output, single phase transistor driver
• Electrical Specifications: Supply voltage range 4V ~ 9V, switching frequency 100kHz ~ 2MHz
• Control Features: Frequency control and soft start functionality
• Package Compatibility: 8-MSOP surface mount package with 0.110" (2.80mm) width
• Environmental & Compliance: Operating temperature -40°C ~ 85°C, ROHS3 compliant, REACH unaffected

Based on the provided input parameters, the BD9850FVM-TR is identified as a parametric equivalent to itself, with no additional substitute parts specified in the source data.

Parameter Comparison

Engineering Selection Recommendations

The BD9850FVM-TR is classified as obsolete. Component selection for applications currently using this device should prioritize parts meeting the following criteria:

• Identical buck converter controller topology with positive step-down output
• Matching 8-MSOP package footprint and pinout compatibility
• Supply voltage range encompassing 4V ~ 9V operation
• Switching frequency capability within 100kHz ~ 2MHz range
• Equivalent control features including frequency control and soft start
• ROHS3 compliance and REACH unaffected status for regulatory alignment
• Operating temperature range of -40°C ~ 85°C or broader

The obsolete status of this component necessitates early identification of qualified alternatives to ensure design continuity and supply chain stability.

Frequently Asked Questions (FAQ)

Q: What makes a part a suitable substitute for the BD9850FVM-TR?

A: A substitute must match the buck converter controller topology, positive step-down output configuration, single-phase transistor driver output type, 4V ~ 9V supply voltage range, 100kHz ~ 2MHz switching frequency capability, frequency control and soft start features, 8-MSOP package footprint, and -40°C ~ 85°C operating temperature range.

Q: Is the BD9850FVM-TR still in production?

A: No. The BD9850FVM-TR is classified as obsolete. New designs should evaluate alternative buck controller ICs that meet the specified electrical and mechanical parameters.

Q: Can I use a different package type as a substitute?

A: Package compatibility is a critical substitution criterion. The 8-MSOP (0.110", 2.80mm width) package is a specific requirement. Alternative packages require PCB redesign and are not considered direct substitutes.

Q: What compliance certifications are important for substitution?

A: ROHS3 compliance and REACH unaffected status are mandatory for regulatory alignment. Any substitute must maintain these certifications to ensure compliance with applicable standards.

Q: Are there any inventory considerations for this obsolete part?

A: Current inventory of 7634 pieces is available as new original stock. However, given the obsolete status, long-term availability cannot be guaranteed. Procurement planning should account for this limitation.