LP2985-10DBVT Equivalent & Substitute Parts

Part Overview

The LP2985-10DBVT is a linear voltage regulator IC from Texas Instruments designed for positive fixed 10V output applications with 150mA current capacity in a compact SOT-23-5 surface mount package. This device is classified as Last Time Buy, indicating limited future availability. Alternative equivalent and substitute parts are necessary to ensure design continuity and long-term supply chain reliability for applications requiring fixed 10V regulation or adjustable output configurations.

Substiute Parts

LP2985-10DBVT

Texas InstrumentsIn Stock: 20120LP2985-10DBVT Datasheet

Current PartRFQ

TPS7A2401DBVR

Texas InstrumentsIn Stock: 19846TPS7A2401DBVR Datasheet

MFR RecommendedRFQ

LP2985-10DBVR

Texas InstrumentsIn Stock: 35137LP2985-10DBVR Datasheet

Parametric EquivalentRFQ

LP2985A-10DBVR

Texas InstrumentsIn Stock: 60384LP2985A-10DBVR Datasheet

Parametric EquivalentRFQ

LP2985A-10DBVT

Texas InstrumentsIn Stock: 4131LP2985A-10DBVT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2985-10DBVT are categorized based on electrical and mechanical parameter compatibility:

Parametric Equivalents (Direct Replacements): Parts sharing identical electrical specifications including fixed 10V output, 150mA current capacity, 16V maximum input voltage, 0.58V dropout voltage, and SOT-23-5 packaging. These parts maintain full functional compatibility within the same design footprint.

Key Parameters for Substitution:

• Output voltage: 10V fixed
• Output current: 150mA
• Input voltage range: up to 16V
• Package type: SOT-23-5 (SC-74A)
• Surface mount configuration
• Operating temperature range: -40°C to 125°C

Manufacturer Recommended Substitute: The TPS7A2401DBVR offers enhanced performance characteristics including adjustable output (1.24V to 17.75V), higher current capacity (200mA), improved dropout voltage (0.25V @ 200mA), and lower quiescent current (4.5µA). This part requires design modification to set the fixed 10V output through external resistor network but provides superior efficiency and supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement: Select LP2985-10DBVR, LP2985A-10DBVR, or LP2985A-10DBVT. These parts maintain identical electrical performance and packaging, requiring no circuit modification. All are ROHS3 compliant and operate across the full -40°C to 125°C temperature range. LP2985A variants offer higher inventory availability (60,300 and 4,095 units respectively) compared to the LP2985-10DBVR (35,100 units).

For Enhanced Performance and Long-Term Supply: Select TPS7A2401DBVR. This part is classified as Active product status, ensuring continued availability and support. It provides superior electrical characteristics including 200mA output current, 0.25V dropout voltage, and significantly reduced quiescent current (4.5µA versus 95µA). Implementation requires external resistor network configuration to establish the fixed 10V output voltage. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are maintained.

Compliance Considerations: All listed parts meet ROHS3 compliance requirements, REACH unaffected status, and EAR99 export classification. Moisture sensitivity level is 1 (Unlimited) for all variants, indicating no special handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can LP2985-10DBVR be used as a direct replacement for LP2985-10DBVT?

A: Yes. Both parts share identical electrical specifications (10V fixed output, 150mA current, 0.58V dropout) and SOT-23-5 packaging. The difference is packaging format: DBVR indicates Digi-Reel tape packaging while DBVT indicates cut tape. Electrical performance and pinout are identical.

Q: What is the difference between LP2985 and LP2985A variants?

A: Both LP2985 and LP2985A variants maintain identical electrical parameters for the 10V fixed output configuration. The "A" designation indicates a product revision. All variants are Last Time Buy status and share the same SOT-23-5 package, operating temperature range, and protection features.

Q: Why would TPS7A2401DBVR be selected over LP2985 variants?

A: TPS7A2401DBVR is classified as Active product status, ensuring long-term availability and manufacturing support. It delivers superior performance with 200mA output current (versus 150mA), 0.25V dropout voltage (versus 0.58V), and 4.5µA quiescent current (versus 95µA). These improvements reduce power dissipation and heat generation. The trade-off is that TPS7A2401DBVR requires external resistor network configuration to set the 10V output voltage, whereas LP2985 variants provide fixed 10V output without additional components.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All listed parts use SOT-23-5 (SC-74A, SOT-753) surface mount packaging with identical pinout and footprint dimensions. No PCB layout modifications are required for direct substitution among LP2985-10DBVT, LP2985-10DBVR, LP2985A-10DBVR, LP2985A-10DBVT, and TPS7A2401DBVR.

Q: What are the compliance and certification requirements?

A: All parts are ROHS3 compliant, REACH unaffected, and classified under EAR99 export control. Moisture sensitivity level is 1 (Unlimited), indicating no special moisture barrier bag requirements during storage or assembly processes.

Q: How does quiescent current affect circuit design?

A: Quiescent current represents the regulator's internal power consumption when supplying no load current. LP2985 variants draw 95µA, while TPS7A2401DBVR draws only 4.5µA. In battery-powered or low-power standby applications, TPS7A2401DBVR significantly reduces standby power consumption. For standard line-powered applications, this difference is typically negligible.