REF5045AIDG4 Equivalent & Substitute Parts

Part Overview

The REF5045AIDG4 is a series voltage reference IC manufactured by Texas Instruments, designed to provide a fixed 4.5V output with ±0.1% tolerance. This component belongs to the Power Management (PMIC) category and is housed in an 8-SOIC surface mount package. The REF5045AIDG4 is currently classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

REF5045AIDG4

Texas InstrumentsIn Stock: 18537REF5045AIDG4 Datasheet

Current PartRFQ

REF5045AID

Texas InstrumentsIn Stock: 1988REF5045AID Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the REF5045AIDG4 is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 4.5V
• Output current capability of 10 mA
• Tolerance specification of ±0.1%
• Temperature coefficient of 8 ppm/°C
• Input voltage range of 4.7V ~ 18V
• 8-SOIC surface mount package
• Operating temperature range of -40°C ~ 125°C

The REF5045AID meets all these electrical and mechanical specifications while maintaining active product status from Texas Instruments. Both parts share identical base product number (REF5045) and are functionally interchangeable within the same application context.

Parameter Comparison

Engineering Selection Recommendations

The REF5045AID is the direct active equivalent for the obsolete REF5045AIDG4. Both components are manufactured by Texas Instruments and maintain identical electrical specifications and package configuration. The REF5045AID carries active product status, ensuring continued availability and manufacturing support. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, supporting equivalent reliability profiles in production environments. Selection of the REF5045AID eliminates obsolescence risk while preserving all functional and mechanical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the REF5045AID directly replace the REF5045AIDG4 in existing designs?

A: Yes. Both parts are electrically and mechanically identical, sharing the same output voltage (4.5V), tolerance (±0.1%), temperature coefficient (8 ppm/°C), and 8-SOIC package configuration. No circuit modifications are required.

Q: What is the primary difference between these two part numbers?

A: The REF5045AIDG4 is classified as obsolete, while the REF5045AID maintains active product status. The packaging designation differs (G4 versus standard), but electrical performance and pinout are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain ROHS3 compliance, identical moisture sensitivity levels (MSL 2, 1 Year), and equivalent environmental ratings across the -40°C to 125°C operating temperature range.

Q: What is the input voltage requirement for these reference ICs?

A: Both parts require an input voltage range of 4.7V to 18V for proper operation.

Q: Is the 8-SOIC package the only available option for this reference voltage?

A: Based on the provided specifications, both the REF5045AIDG4 and REF5045AID are available in the 8-SOIC (0.154", 3.90mm Width) surface mount package.