UCC28019P Equivalent & Substitute Parts

Part Overview

The UCC28019P is a Power Factor Correction (PFC) controller IC designed for continuous conduction mode (CCM) operation at 65kHz switching frequency. This device is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and production continuity. The UCC28019P operates within a 10V to 21V supply voltage range and is packaged in an 8-PDIP through-hole configuration, making it suitable for legacy applications requiring direct replacement solutions.

Substiute Parts

UCC28019P

Texas InstrumentsIn Stock: 4964UCC28019P Datasheet

Current PartRFQ

UCC28019D

Texas InstrumentsIn Stock: 1605UCC28019D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UCC28019P is determined by strict alignment of the following electrical and mechanical parameters:

• Functional Mode: Continuous Conduction (CCM) operation
• Switching Frequency: 65kHz
• Supply Voltage Range: 10V ~ 21V
• Startup Current: 100 µA
• Operating Temperature Range: -40°C ~ 125°C
• Base Product Number: UCC28019 (same silicon die)
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The UCC28019D qualifies as a direct functional equivalent, sharing identical electrical specifications and the same base product number (UCC28019). The primary difference is packaging format: the UCC28019D uses surface-mount 8-SOIC packaging instead of through-hole 8-DIP, and carries active product status from Texas Instruments.

Parameter Comparison

Engineering Selection Recommendations

The UCC28019D is the manufacturer-recommended substitute for the obsolete UCC28019P. Both devices share identical electrical specifications, functional mode, switching frequency, supply voltage range, startup current, and operating temperature range. Both maintain ROHS3 compliance and REACH unaffected status.

The UCC28019D carries active product status from Texas Instruments, ensuring continued availability and manufacturing support. This is the primary advantage for new designs and production continuity.

The substitution requires PCB layout modification due to packaging format change: the UCC28019D uses surface-mount 8-SOIC packaging (0.154" width) versus the through-hole 8-DIP format (0.300" width) of the original part. Pin-to-pin electrical compatibility is maintained, but footprint redesign is necessary.

Frequently Asked Questions (FAQ)

Q: Can the UCC28019D directly replace the UCC28019P without circuit modification?

A: Electrical functionality is identical. Pin-to-pin compatibility is maintained. However, PCB layout modification is required due to packaging format change from through-hole 8-DIP to surface-mount 8-SOIC.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on matching: continuous conduction (CCM) mode, 65kHz switching frequency, 10V to 21V supply voltage range, 100 µA startup current, -40°C to 125°C operating temperature range, and identical base product number (UCC28019).

Q: Why is the UCC28019P classified as obsolete?

A: Product status is determined by manufacturer lifecycle decisions. The UCC28019D represents the active continuation of this product line.

Q: Are there compliance differences between the two parts?

A: No. Both devices are ROHS3 compliant, REACH unaffected, and carry identical regulatory certifications.

Q: What is the primary design consideration when switching from UCC28019P to UCC28019D?

A: Packaging format change requires PCB footprint redesign. The UCC28019D uses surface-mount 8-SOIC packaging instead of through-hole 8-DIP, necessitating layout modification and revalidation of thermal and electrical performance in the new footprint.