REF2925AIDBZRG4 Equivalent & Substitute Parts

Part Overview

The REF2925AIDBZRG4 is a Series Voltage Reference IC manufactured by Texas Instruments, designed to provide a fixed 2.5V output with ±2% tolerance. This component is classified as a Power Management (PMIC) device and is packaged in SOT-23-3 form factor. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for design continuity and procurement planning. Active alternatives with identical or superior electrical characteristics are available from both Texas Instruments and Renesas Electronics Corporation.

Substiute Parts

REF2925AIDBZRG4

Texas InstrumentsIn Stock: 17242REF2925AIDBZRG4 Datasheet

Current PartRFQ

REF2925AIDBZR

Texas InstrumentsIn Stock: 71391REF2925AIDBZR Datasheet

Parametric EquivalentRFQ

REF2925AIDBZT

Texas InstrumentsIn Stock: 17010REF2925AIDBZT Datasheet

Parametric EquivalentRFQ

ISL21010CFH325Z-TK

Renesas Electronics CorporationIn Stock: 2480ISL21010CFH325Z-TK Datasheet

MFR RecommendedRFQ

ISL21080CIH315Z-TK

Renesas Electronics CorporationIn Stock: 64777ISL21080CIH315Z-TK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the REF2925AIDBZRG4 is determined by the following critical parameters:

Primary Substitution Criteria:

• Output voltage: 2.5V fixed
• Package type: SOT-23-3 (TO-236-3, SC-59)
• Mounting type: Surface Mount
• Input voltage range compatibility: minimum 2.55V or lower
• Output current capability: minimum 25 mA
• Operating temperature range: minimum -40°C to 125°C

Substitute Categories:

1. Parametric Equivalents (Direct Replacements): REF2925AIDBZR and REF2925AIDBZT are identical Texas Instruments parts with the same electrical specifications. These differ only in packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Active versus Obsolete). Both maintain the same 2.5V output, ±2% tolerance, 25 mA output current, and SOT-23-3 package.

2. Manufacturer Recommended Alternatives (Enhanced Performance): ISL21010CFH325Z-TK (Renesas) provides superior tolerance (±0.2% versus ±2%) and lower temperature coefficient (50 ppm/°C versus 100 ppm/°C) while maintaining 2.5V output, 25 mA capability, and SOT-23-3 package. This part is suitable where tighter voltage regulation is required.

3. Cross-Manufacturer Alternative (Different Output Voltage): ISL21080CIH315Z-TK (Renesas) provides a 1.5V fixed output with ±0.5% tolerance. This part is not a direct substitute due to different output voltage but shares the same SOT-23-3 package and surface mount characteristics. Selection requires application-specific voltage requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): REF2925AIDBZR and REF2925AIDBZT are the primary substitutes for REF2925AIDBZRG4. Both parts are active products from Texas Instruments with identical electrical characteristics and SOT-23-3 packaging. Selection between these two depends on packaging requirements: REF2925AIDBZR is supplied in Cut Tape & Digi-Reel® format, while REF2925AIDBZT is supplied in Cut Tape & Digi-Reel® format. Both maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

For Enhanced Performance (Tighter Tolerance): ISL21010CFH325Z-TK from Renesas Electronics Corporation is recommended when applications require superior voltage regulation accuracy. This part maintains the 2.5V output and 25 mA output current capability while providing ±0.2% tolerance (compared to ±2%) and 50 ppm/°C temperature coefficient (compared to 100 ppm/°C). The input voltage range (2.6V ~ 5.5V) is compatible with most applications using the original part. Supply current increases to 100 µA. This part is active and ROHS3 compliant.

For Alternative Voltage Applications: ISL21080CIH315Z-TK is not a direct substitute due to its 1.5V fixed output. This part is applicable only in designs requiring 1.5V reference voltage. It offers superior temperature coefficient (50 ppm/°C) and extremely low supply current (1.5 µA), but provides only 7 mA output current and operates to 85°C maximum (versus 125°C). Operating temperature range limitation must be evaluated against application requirements.

Frequently Asked Questions (FAQ)

Q: Can REF2925AIDBZR or REF2925AIDBZT be used as direct replacements for REF2925AIDBZRG4?

A: Yes. Both parts are parametric equivalents with identical electrical specifications: 2.5V fixed output, ±2% tolerance, 25 mA output current, 100 ppm/°C temperature coefficient, and SOT-23-3 package. The primary difference is product status (Active versus Obsolete) and packaging format. Both are ROHS3 compliant and suitable for direct PCB substitution.

Q: What are the key differences between the Texas Instruments REF2925 series and the Renesas ISL21010CFH325Z-TK?

A: Both maintain 2.5V output and 25 mA capability in SOT-23-3 packages. The ISL21010CFH325Z-TK provides tighter tolerance (±0.2% versus ±2%) and lower temperature coefficient (50 ppm/°C versus 100 ppm/°C). Supply current increases from 59 µA to 100 µA. Input voltage minimum increases from 2.55V to 2.6V. Operating temperature range remains -40°C to 125°C. Selection depends on accuracy requirements and power budget constraints.

Q: Is ISL21080CIH315Z-TK compatible with designs using REF2925AIDBZRG4?

A: ISL21080CIH315Z-TK is not a direct substitute. This part provides 1.5V fixed output instead of 2.5V, making it suitable only for applications specifically requiring 1.5V reference voltage. While it shares the SOT-23-3 package and surface mount characteristics, the different output voltage requires circuit redesign. Additionally, maximum operating temperature is limited to 85°C (versus 125°C) and output current is reduced to 7 mA (versus 25 mA).

Q: What packaging formats are available for substitute parts?

A: REF2925AIDBZR and REF2925AIDBZT are supplied in Cut Tape & Digi-Reel® format. ISL21010CFH325Z-TK is supplied in Tape & Reel (TR) format. ISL21080CIH315Z-TK is supplied in Cut Tape & Digi-Reel® format. All parts use SOT-23-3 package with identical pinout and footprint compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes. REF2925AIDBZR, REF2925AIDBZT, ISL21010CFH325Z-TK, and ISL21080CIH315Z-TK are all ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).