UCC28019AP Equivalent & Substitute Parts

Part Overview

The UCC28019AP 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 UCC28019AP operates within a 10V to 21V supply voltage range and is packaged in an 8-DIP through-hole configuration, making it suitable for legacy industrial and power supply applications requiring PFC functionality.

Substiute Parts

UCC28019AP

Texas InstrumentsIn Stock: 2187UCC28019AP Datasheet

Current PartRFQ

UCC28019AD

Texas InstrumentsIn Stock: 5008UCC28019AD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UCC28019AP is determined by strict equivalence across the following critical 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 UCC28019AD is identified as the manufacturer-recommended substitute. Both devices share identical electrical specifications and are derived from the same base product number (UCC28019). The primary difference is packaging format: the UCC28019AP uses through-hole 8-DIP mounting, while the UCC28019AD uses surface-mount 8-SOIC packaging. This distinction affects PCB layout and assembly methodology but does not alter electrical performance or functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The UCC28019AD is the appropriate substitute for the obsolete UCC28019AP based on the following criteria:

Product Status: The UCC28019AP is classified as obsolete, while the UCC28019AD maintains active product status with Texas Instruments, ensuring continued availability and manufacturing support.

Electrical Equivalence: Both devices are derived from the same base product number (UCC28019) and maintain identical electrical specifications across all critical parameters: CCM mode operation, 65kHz switching frequency, 10V to 21V supply voltage range, 100 µA startup current, and -40°C to 125°C operating temperature range.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements for industrial and commercial applications.

Packaging Consideration: Selection between UCC28019AP and UCC28019AD depends on PCB assembly methodology. The UCC28019AP requires through-hole mounting capability, while the UCC28019AD requires surface-mount assembly infrastructure. Existing through-hole designs may require PCB layout modification to accommodate the UCC28019AD's 8-SOIC package footprint.

Frequently Asked Questions (FAQ)

Q: Can the UCC28019AD directly replace the UCC28019AP without circuit modification?

A: The UCC28019AD is electrically equivalent to the UCC28019AP and requires no circuit schematic changes. However, PCB layout modification is necessary due to different package formats. The UCC28019AP uses 8-DIP through-hole mounting, while the UCC28019AD uses 8-SOIC surface-mount packaging. Pin-to-pin electrical functionality is identical.

Q: What is the primary reason for substituting the UCC28019AP?

A: The UCC28019AP is classified as obsolete. The UCC28019AD is the manufacturer-recommended active equivalent, ensuring continued component availability and manufacturing support for new production runs and design updates.

Q: Are there any differences in electrical performance between these two parts?

A: No. Both devices share identical electrical specifications: 65kHz CCM operation, 10V to 21V supply voltage, 100 µA startup current, and -40°C to 125°C operating temperature range. Performance differences are limited to physical packaging and mounting methodology.

Q: What assembly considerations apply when switching from UCC28019AP to UCC28019AD?

A: The UCC28019AP is designed for through-hole insertion assembly, while the UCC28019AD requires surface-mount assembly equipment. PCB footprint design must be updated to accommodate the 8-SOIC package (0.154" width) in place of the 8-DIP package (0.300" width). Pin spacing and lead configuration differ between packages.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the UCC28019AP and UCC28019AD are ROHS3 compliant and REACH unaffected, meeting identical environmental and regulatory requirements for industrial applications.