NCP1653DR2G Equivalent & Substitute Parts

Part Overview

The NCP1653DR2G is a Power Factor Correction (PFC) controller IC manufactured by onsemi, designed for continuous conduction mode (CCM) operation at 90kHz to 110kHz switching frequency. This device is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The 8-SOIC surface mount package and specific electrical characteristics define the substitution criteria for compatible alternatives.

Substiute Parts

NCP1653DR2G

onsemiIn Stock: 1763NCP1653DR2G Datasheet

Current PartRFQ

NCP1654BD133R2G

onsemiIn Stock: 105506NCP1654BD133R2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NCP1653DR2G is determined by the following critical parameters:

Functional Compatibility Criteria:

• Continuous Conduction (CCM) mode operation
• 8-SOIC surface mount package with identical 0.154" (3.90mm) width
• Supply voltage range overlap or compatibility
• Operating temperature range of -40°C to 125°C
• RoHS3 compliance and MSL Level 1 rating

Primary Substitute: The NCP1654BD133R2G qualifies as a direct substitute based on identical package geometry, matching CCM mode operation, overlapping supply voltage specifications (9V ~ 20V encompasses the original 8.75V ~ 18V range), and equivalent environmental ratings. The switching frequency range of 120kHz ~ 146kHz represents a higher operating point within acceptable PFC controller parameters for similar power conversion topologies.

Parameter Comparison

Engineering Selection Recommendations

The NCP1654BD133R2G is the recommended substitute for the obsolete NCP1653DR2G based on the following factors:

Product Status: The NCP1654BD133R2G maintains active product status with onsemi, ensuring continued availability and manufacturing support. The original NCP1653DR2G is obsolete, making the substitute necessary for production continuity.

Compliance & Certifications: Both devices maintain ROHS3 compliance and identical MSL Level 1 ratings, ensuring equivalent environmental and regulatory compatibility. REACH status remains unaffected for both parts.

Package Compatibility: Identical 8-SOIC package geometry (0.154", 3.90mm width) permits direct PCB footprint compatibility without layout modifications.

Electrical Parameters: The substitute operates within compatible supply voltage and temperature ranges. The elevated switching frequency (120kHz ~ 146kHz versus 90kHz ~ 110kHz) reflects design evolution within the NCP165x controller family and is suitable for equivalent power conversion applications.

Frequently Asked Questions (FAQ)

Q: Can the NCP1654BD133R2G be used as a direct replacement on existing PCBs designed for NCP1653DR2G?

A: Yes. The identical 8-SOIC package footprint (0.154", 3.90mm width) and pin configuration enable direct PCB substitution without layout changes. Pin-to-pin compatibility is maintained.

Q: What is the primary difference between these two PFC controllers?

A: The NCP1654BD133R2G operates at a higher switching frequency range (120kHz ~ 146kHz) compared to the NCP1653DR2G (90kHz ~ 110kHz). Both maintain CCM operation mode and identical package specifications. The supply voltage range of the substitute is slightly extended (9V ~ 20V versus 8.75V ~ 18V).

Q: Are there compliance or certification differences between the main part and substitute?

A: No. Both devices maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status. Environmental and regulatory certifications are equivalent.

Q: Why is the NCP1653DR2G classified as obsolete?

A: The NCP1653DR2G has reached end-of-life status with onsemi. The NCP1654BD133R2G represents the active successor within the NCP165x PFC controller product line.

Q: Does the higher switching frequency of the substitute affect circuit design?

A: The switching frequency difference is within acceptable parameters for PFC controller applications. Circuit design considerations such as inductor selection, output filtering, and control loop compensation may require evaluation based on specific application requirements, but the substitute is functionally compatible for equivalent power conversion topologies.

Q: What packaging options are available for the substitute?

A: The NCP1654BD133R2G is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both prototype and production volume requirements.