UCC3818ADRG4 Equivalent & Substitute Parts

Part Overview

The UCC3818ADRG4 is a Power Factor Correction (PFC) controller IC manufactured by Texas Instruments, designed for average current mode operation across a switching frequency range of 6kHz to 220kHz. This device is packaged in a 16-SOIC surface mount configuration and operates from a 12V to 17V supply with a startup current of 150 µA.

The UCC3818ADRG4 has been discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this PFC controller.

Substiute Parts

UCC3818ADRG4

Texas InstrumentsIn Stock: 4100UCC3818ADRG4 Datasheet

Current PartRFQ

UCC3818ADR

Texas InstrumentsIn Stock: 20478UCC3818ADR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UCC3818ADRG4 is determined by strict equivalence across the following electrical and mechanical parameters:

• Mode of operation: Average Current
• Switching frequency range: 6kHz ~ 220kHz
• Supply voltage range: 12V ~ 17V
• Startup current: 150 µA
• Operating temperature range: 0°C ~ 70°C
• Package type: 16-SOIC (0.154", 3.90mm Width)
• Base product number: UCC3818
• Compliance standards: ROHS3, REACH Unaffected

The UCC3818ADR meets all specified electrical and mechanical parameters and shares the same base product number, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The UCC3818ADR is the direct substitute for the UCC3818ADRG4. Both parts are manufactured by Texas Instruments and maintain identical electrical specifications, operating parameters, and package configuration. The primary distinction is product status: the UCC3818ADRG4 is discontinued, while the UCC3818ADR remains in active production with confirmed inventory availability (20,400 pcs).

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications requiring environmental and hazardous substance certifications. The UCC3818ADR is available in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both prototype and production-volume procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the UCC3818ADR be used as a direct replacement for the UCC3818ADRG4?

A: Yes. The UCC3818ADR is electrically and mechanically equivalent to the UCC3818ADRG4. All functional parameters, including switching frequency range, supply voltage, startup current, and operating temperature specifications, are identical. Both devices use the 16-SOIC package and share the same base product number.

Q: What is the difference between the UCC3818ADRG4 and UCC3818ADR?

A: The primary difference is product status and packaging availability. The UCC3818ADRG4 is discontinued, while the UCC3818ADR is actively manufactured. The UCC3818ADR is available in Cut Tape (CT) and Digi-Reel® formats, whereas the UCC3818ADRG4 packaging format is not specified in the available data.

Q: Are there any compatibility concerns when substituting the UCC3818ADR for the UCC3818ADRG4?

A: No compatibility concerns exist. Both parts are pin-compatible, functionally equivalent, and maintain identical electrical specifications. PCB layout and circuit design require no modification for this substitution.

Q: What certifications and compliance standards apply to the UCC3818ADR?

A: The UCC3818ADR is ROHS3 compliant and REACH unaffected, matching the compliance profile of the UCC3818ADRG4. Both parts carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life under standard storage conditions.

Q: Is the UCC3818ADR available in the same package as the UCC3818ADRG4?

A: Yes. Both parts use the 16-SOIC package with 0.154" width (3.90mm), ensuring mechanical compatibility and identical PCB footprint requirements.