TPS7430D Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TPS7430D is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V output at 200mA. This device is classified as "Not For New Designs," making identification of active equivalent and substitute parts essential for ongoing production support and design updates. The TPS7430D operates across -40°C to 125°C with integrated protection features including over-current, over-temperature, and reverse polarity protection. Active alternatives with comparable or enhanced specifications are available from National Semiconductor and Analog Devices Inc.

Substiute Parts

TPS7430D

Texas InstrumentsIn Stock: 1487TPS7430D Datasheet

Current PartRFQ

LP2986AIM-3.0/NOPB

National SemiconductorIn Stock: 3093LP2986AIM-3.0/NOPB Datasheet

MFR RecommendedRFQ

LP2986IM-3.0/NOPB

Texas InstrumentsIn Stock: 904LP2986IM-3.0/NOPB Datasheet

MFR RecommendedRFQ

ADP3301ARZ-3

Analog Devices Inc.In Stock: 1386ADP3301ARZ-3 Datasheet

MFR RecommendedRFQ

ADP3301ARZ-3-REEL

Analog Devices Inc.In Stock: 859ADP3301ARZ-3-REEL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS7430D is determined by the following critical parameters:

Primary Substitution Criteria:

• Output voltage: 3V fixed
• Output current capability: minimum 200mA
• Package type: 8-SOIC form factor
• Mounting type: Surface Mount
• Operating temperature range: -40°C to 125°C minimum

Secondary Compatibility Factors:

• Voltage dropout characteristics
• Quiescent current consumption
• Protection feature set
• Input voltage rating
• Product status (Active preferred for new designs)

The substitute parts are grouped into two categories based on output current capability and product status alignment.

Parameter Comparison

Engineering Selection Recommendations

Full Current Capacity Substitutes (200mA Output):

LP2986AIM-3.0/NOPB and LP2986IM-3.0/NOPB are direct functional equivalents with Active product status. Both maintain 200mA output current, identical 3V fixed output, and matching 0.35V dropout specification. LP2986IM-3.0/NOPB is manufactured by Texas Instruments and carries ROHS3 compliance certification. These parts support the full -40°C to 125°C operating range and provide enhanced input voltage tolerance (16V maximum versus 7V for TPS7430D). PSRR performance is improved at 65dB (1kHz). Selection between these two depends on packaging requirements and supply chain availability.

Reduced Current Capacity Substitutes (100mA Output):

ADP3301ARZ-3 and ADP3301ARZ-3-REEL are Active alternatives from Analog Devices Inc. with anyCAP® series designation. These parts deliver 100mA output current, meeting applications requiring half the current capacity of the TPS7430D. Both variants maintain 3V fixed output and 8-SOIC package compatibility. Dropout voltage is superior at 0.2V @ 100mA. Operating temperature range is narrower (-20°C to 85°C) compared to the TPS7430D. Packaging differentiation: ADP3301ARZ-3 is supplied in Tube format; ADP3301ARZ-3-REEL is supplied in Tape & Reel format. Both carry ROHS3 compliance. Selection of ADP3301 variants is appropriate only for designs with maximum 100mA output current requirements.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the TPS7430D. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all parts.

Frequently Asked Questions (FAQ)

Q: Can LP2986IM-3.0/NOPB directly replace TPS7430D in existing designs?

A: Yes, for applications requiring 200mA output current. Both parts deliver 3V fixed output in 8-SOIC package with identical 0.35V dropout at 200mA. LP2986IM-3.0/NOPB is Active product status and supports the full -40°C to 125°C temperature range. Verify input voltage does not exceed 7V if the design was optimized for TPS7430D's lower maximum input rating.

Q: What is the difference between LP2986AIM-3.0/NOPB and LP2986IM-3.0/NOPB?

A: Both parts are functionally identical with 200mA output, 3V fixed output, and 0.35V dropout. LP2986AIM-3.0/NOPB is manufactured by National Semiconductor; LP2986IM-3.0/NOPB is manufactured by Texas Instruments. Selection depends on supply chain preference and packaging availability.

Q: Can ADP3301ARZ-3 replace TPS7430D?

A: ADP3301ARZ-3 is suitable only for applications requiring maximum 100mA output current. It is not a direct replacement for designs demanding 200mA. Both maintain 3V fixed output and 8-SOIC package. Operating temperature range is limited to -20°C to 85°C, which does not cover the full -40°C to 125°C range of TPS7430D.

Q: What is the packaging difference between ADP3301ARZ-3 and ADP3301ARZ-3-REEL?

A: ADP3301ARZ-3 is supplied in Tube packaging; ADP3301ARZ-3-REEL is supplied in Tape & Reel (TR) format. Electrical specifications are identical. Selection depends on assembly process requirements and volume considerations.

Q: Are all substitute parts ROHS3 compliant?

A: LP2986IM-3.0/NOPB, ADP3301ARZ-3, and ADP3301ARZ-3-REEL carry ROHS3 compliance certification. LP2986AIM-3.0/NOPB compliance status is not specified in available documentation.

Q: What is the input voltage tolerance for each substitute?

A: TPS7430D maximum input is 7V. LP2986AIM-3.0/NOPB and LP2986IM-3.0/NOPB support 16V maximum input. ADP3301ARZ-3 and ADP3301ARZ-3-REEL support 12V maximum input. Verify design input voltage against each part's specification before selection.