BD9486F-GE2 Equivalent & Substitute Parts

Part Overview

The BD9486F-GE2 is an LED driver controller IC manufactured by Rohm Semiconductor, designed for backlight applications requiring step-up (boost) topology with PWM and analog dimming capabilities. This active product operates across a 9V to 18V supply range at 150kHz switching frequency in a 16-SOIC surface mount package. Alternative components may be required due to design specification changes, supply chain considerations, or application-specific performance requirements.

Substiute Parts

BD9486F-GE2

Rohm SemiconductorIn Stock: 26181BD9486F-GE2 Datasheet

Current PartRFQ

LM3409QHVMY/NOPB

Texas InstrumentsIn Stock: 16483LM3409QHVMY/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BD9486F-GE2 is determined by the following critical parameters:

• Functional Category: LED driver controller IC with DC-DC conversion capability
• Control Interface: PWM and analog dimming support
• Output Configuration: Single output channel
• Supply Voltage Compatibility: Operating range overlap with 9V to 18V specification
• Switching Topology: Step-up (boost) conversion architecture
• Package Compatibility: Surface mount configuration with pin count and thermal characteristics suitable for board integration
• Compliance Standards: RoHS3 compliance and automotive-grade qualification where applicable

The LM3409QHVMY/NOPB from Texas Instruments is identified as a substitute part. While this component operates on a different topology (step-down/buck), it maintains functional equivalence through shared LED driver controller architecture, single-output design, PWM and analog dimming capability, and compatible supply voltage operating ranges.

Parameter Comparison

Engineering Selection Recommendations

Both the BD9486F-GE2 and LM3409QHVMY/NOPB are active products with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The LM3409QHVMY/NOPB carries AEC-Q100 automotive qualification, making it suitable for applications requiring automotive-grade component certification. The extended operating temperature range of the LM3409QHVMY/NOPB (-40°C to 125°C) provides additional thermal margin compared to the BD9486F-GE2 (-40°C to 85°C). Selection between these components should be based on topology requirements (boost versus buck conversion), package footprint constraints, and automotive qualification necessity for the target application.

Frequently Asked Questions (FAQ)

Q: Can the LM3409QHVMY/NOPB directly replace the BD9486F-GE2 in existing designs?

A: Direct replacement requires circuit topology evaluation. The BD9486F-GE2 implements step-up (boost) conversion, while the LM3409QHVMY/NOPB uses step-down (buck) topology. Both support single-output LED driver control with PWM and analog dimming, but the power conversion architecture differs. PCB layout and external component configuration must be redesigned accordingly.

Q: What are the package differences between these parts?

A: The BD9486F-GE2 uses a 16-SOIC package (0.173", 4.40mm width), while the LM3409QHVMY/NOPB uses a 10-PowerTFSOP/10-MSOP package (0.118", 3.00mm width). The pin count and footprint are not compatible, requiring PCB redesign for substitution.

Q: Are both parts suitable for automotive applications?

A: The LM3409QHVMY/NOPB carries AEC-Q100 automotive qualification. The BD9486F-GE2 does not specify automotive qualification. For automotive-grade requirements, the LM3409QHVMY/NOPB is the appropriate selection.

Q: What is the moisture sensitivity difference between these components?

A: The BD9486F-GE2 has MSL 1 (unlimited moisture sensitivity level), while the LM3409QHVMY/NOPB has MSL 3 (168 hours). The BD9486F-GE2 requires less stringent moisture control during storage and handling.

Q: Do both parts support the same dimming control methods?

A: Yes, both the BD9486F-GE2 and LM3409QHVMY/NOPB support analog and PWM dimming control, ensuring functional compatibility in dimming interface design.