NCP5425DBR2 Equivalent & Substitute Parts

Part Overview

The NCP5425DBR2 is a buck regulator positive output step-down DC-DC controller IC manufactured by onsemi in a 20-TSSOP package. This device functions as a transistor driver for step-down voltage conversion applications with dual output phases and synchronous rectification capability. The NCP5425DBR2 is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

NCP5425DBR2

onsemiIn Stock: 1229NCP5425DBR2 Datasheet

Current PartRFQ

NCP5425DBR2G

onsemiIn Stock: 27945NCP5425DBR2G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NCP5425DBR2 is determined by strict equivalence across the following critical parameters:

• Identical base product number (NCP5425)
• Matching package type (20-TSSOP)
• Identical electrical specifications (supply voltage range, switching frequency, duty cycle, output configuration, topology, phase count)
• Identical functional characteristics (step-down buck regulation, positive output, synchronous rectification, transistor driver output type)
• Compatible operating temperature range (0°C ~ 125°C)

The NCP5425DBR2G qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters. The primary distinction between these parts is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The NCP5425DBR2G is the direct substitute for the obsolete NCP5425DBR2. Both parts share identical electrical specifications and package geometry, ensuring functional and mechanical compatibility in existing designs.

The NCP5425DBR2G offers two significant advantages over the original part:

1. Active product status with established supply chain availability (27,900 units in stock versus 1,143 units for the obsolete variant)
2. ROHS3 compliance, meeting current environmental and regulatory requirements, whereas the NCP5425DBR2 is RoHS non-compliant

Selection of the NCP5425DBR2G is appropriate for new designs and ongoing production requiring compliance with modern regulatory standards. The electrical and thermal performance characteristics remain unchanged between the two variants.

Frequently Asked Questions (FAQ)

Q: Are the NCP5425DBR2 and NCP5425DBR2G electrically identical?

A: Yes. Both parts operate identically across all specified electrical parameters including supply voltage range (4V ~ 16V), switching frequency (150kHz ~ 750kHz), duty cycle, output configuration, and thermal operating range (0°C ~ 125°C).

Q: Can the NCP5425DBR2G be used as a direct replacement in existing PCB designs?

A: Yes. The NCP5425DBR2G uses the identical 20-TSSOP package with matching pinout and footprint, enabling direct substitution without PCB modifications.

Q: What is the primary reason to transition from NCP5425DBR2 to NCP5425DBR2G?

A: The NCP5425DBR2 is classified as obsolete with limited inventory. The NCP5425DBR2G is an active product with robust supply availability and ROHS3 compliance, ensuring long-term design support and regulatory alignment.

Q: Does packaging format affect electrical performance?

A: No. The difference between tube/tray packaging (NCP5425DBR2) and tape & reel packaging (NCP5425DBR2G) is a logistics and handling consideration only. Electrical specifications and device performance remain identical.

Q: Are there any thermal or reliability differences between these parts?

A: No. Both parts share the same operating temperature range (0°C ~ 125°C) and functional specifications. Reliability characteristics are equivalent.