FDMF6823C Equivalent & Substitute Parts

Part Overview

The FDMF6823C is a half bridge driver IC manufactured by onsemi, designed for synchronous buck converter applications. This integrated circuit combines high-side and low-side gate drivers with integrated power MOSFETs in a DrMOS configuration, delivering 50A output current per channel. The device operates from a 4.5V to 5.5V supply and supports load voltages from 3V to 16V, making it suitable for power management applications requiring efficient DC-DC conversion.

The FDMF6823C carries an Obsolete product status. Locating equivalent or substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or redesign initiatives for systems currently utilizing this half bridge driver.

Substiute Parts

FDMF6823C

onsemiIn Stock: 143042FDMF6823C Datasheet

Current PartRFQ

TSM4436CS RLG

Taiwan Semiconductor CorporationIn Stock: 15276TSM4436CS RLG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The FDMF6823C is a specialized half bridge driver with integrated power stage (DrMOS technology). Direct functional equivalents at the integrated circuit level are limited due to the specific combination of gate driver functionality and integrated MOSFETs in a single package.

The substitute part identified in the provided data is the TSM4436CS RLG, manufactured by Taiwan Semiconductor Corporation. However, this part represents a different component category: a discrete N-Channel MOSFET rather than an integrated half bridge driver. The TSM4436CS RLG cannot serve as a direct pin-for-pin or functional replacement for the FDMF6823C.

Substitution logic for the FDMF6823C must be based on the following critical parameters:

• Output configuration (half bridge topology)
• Integrated gate driver and power stage combination
• Current rating (50A per channel)
• Supply voltage range (4.5V ~ 5.5V)
• Load voltage range (3V ~ 16V)
• Package type (40-PowerTFQFN)
• Fault protection features (over temperature, shoot-through, UVLO)

Direct substitutes for the FDMF6823C would require matching these specifications within the half bridge driver IC category. The TSM4436CS RLG, being a discrete MOSFET, does not meet these criteria and is not a suitable substitute for this application.

Parameter Comparison

Engineering Selection Recommendations

The FDMF6823C, classified as Obsolete, requires replacement for new designs or continued production support. Selection of an equivalent substitute must prioritize:

1. Integrated half bridge driver topology with gate driver and power stage combination
2. Compliance with ROHS3 and REACH requirements (both met by FDMF6823C)
3. Matching current capacity (50A per channel) and voltage specifications (4.5V ~ 5.5V supply, 3V ~ 16V load)
4. Fault protection features including over temperature, shoot-through, and UVLO protection
5. Compatible package footprint for PCB integration

The TSM4436CS RLG does not meet the functional requirements for direct substitution. This discrete MOSFET lacks the integrated gate driver functionality and cannot replicate the half bridge driver topology of the FDMF6823C. Alternative half bridge driver ICs from onsemi or other manufacturers should be evaluated based on the critical parameters listed above.

Frequently Asked Questions (FAQ)

Q: Can the TSM4436CS RLG replace the FDMF6823C in my design?

A: No. The TSM4436CS RLG is a discrete N-Channel MOSFET, while the FDMF6823C is an integrated half bridge driver with gate driver and power stage. These are fundamentally different component types. The TSM4436CS RLG cannot provide the gate driver functionality or half bridge topology required by the FDMF6823C application.

Q: What makes the FDMF6823C difficult to replace?

A: The FDMF6823C combines three functions in a single package: high-side gate driver, low-side gate driver, and integrated power MOSFETs (DrMOS technology). Direct equivalents must replicate this integrated functionality, supply voltage range (4.5V ~ 5.5V), output current (50A per channel), and fault protection features. Few components offer this exact combination.

Q: Are there any package compatibility considerations?

A: Yes. The FDMF6823C uses a 40-PowerTFQFN (6x6) package. Any substitute must use the same package type to maintain PCB compatibility without redesign. The TSM4436CS RLG uses an 8-SOIC package, making it incompatible at the board level.

Q: What compliance certifications should I verify for a substitute?

A: Ensure the substitute meets ROHS3 compliance and REACH requirements, as specified for the FDMF6823C. Both certifications are mandatory for most industrial and consumer applications.

Q: Why is the FDMF6823C listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. This necessitates finding alternative components for ongoing production or new designs. Active alternatives should be prioritized to ensure long-term supply chain stability.