LP2985A-10DBVT Equivalent & Substitute Parts

Part Overview

The LP2985A-10DBVT is a linear voltage regulator IC from Texas Instruments designed for positive fixed 10V output applications. This Surface Mount device in SOT-23-5 package delivers 150mA output current with integrated protection features including over-current, over-temperature, and short-circuit protection. The part is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain flexibility for applications requiring this fixed 10V regulation topology.

Substiute Parts

LP2985A-10DBVT

Texas InstrumentsIn Stock: 4131LP2985A-10DBVT Datasheet

Current PartRFQ

TPS7A2401DBVR

Texas InstrumentsIn Stock: 19846TPS7A2401DBVR Datasheet

MFR RecommendedRFQ

LP2985-10DBVR

Texas InstrumentsIn Stock: 35137LP2985-10DBVR Datasheet

Parametric EquivalentRFQ

LP2985-10DBVT

Texas InstrumentsIn Stock: 20120LP2985-10DBVT Datasheet

Parametric EquivalentRFQ

LP2985A-10DBVR

Texas InstrumentsIn Stock: 60384LP2985A-10DBVR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2985A-10DBVT are categorized based on electrical and mechanical compatibility:

Parametric Equivalents (Identical Electrical Specifications): Parts LP2985A-10DBVR, LP2985-10DBVR, and LP2985-10DBVT share identical electrical characteristics with the main part: 10V fixed output, 150mA output current, 0.58V maximum dropout voltage, 95µA quiescent current, and identical protection features. These parts differ only in packaging designation (tape reel variant DBVR vs. cut tape variant DBVT) and manufacturing lot codes (A-suffix variants). All maintain SOT-23-5 package compatibility and identical thermal/electrical performance.

Manufacturer Recommended Substitute (Functional Alternative): Part TPS7A2401DBVR is designated as the manufacturer-recommended upgrade path. While this part operates in adjustable output mode (1.24V to 17.75V range) rather than fixed 10V output, it can be configured for 10V operation through external resistor networks. Key advantages include higher output current (200mA vs. 150mA), lower quiescent current (4.5µA vs. 95µA), superior dropout voltage (0.25V vs. 0.58V), and Active product status. This part requires design modification for voltage setting but offers improved performance characteristics.

Key Parameters Determining Substitution:

• Output voltage configuration (fixed vs. adjustable capability)
• Maximum output current rating
• Package type (SOT-23-5 mandatory)
• Dropout voltage performance
• Quiescent current consumption
• Protection feature set
• Product lifecycle status

Parameter Comparison

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement: Select LP2985A-10DBVR, LP2985-10DBVR, or LP2985-10DBVT for applications requiring identical electrical performance and zero design modification. These parametric equivalents maintain all specifications of the LP2985A-10DBVT including fixed 10V output, 150mA current capability, and identical protection architecture. The choice between these variants depends on packaging preference (tape reel vs. cut tape) and inventory availability. All three maintain Last Time Buy status and ROHS3 compliance.

For Long-Term Design Continuity: The TPS7A2401DBVR is the manufacturer-recommended path for new designs or redesigns requiring extended product lifecycle support. This part carries Active product status, ensuring long-term availability beyond the Last Time Buy window of the LP2985 series. While the adjustable output topology requires external resistor configuration to achieve 10V output, the performance improvements justify design modification: 200mA output current (33% increase), 4.5µA quiescent current (95% reduction), and 0.25V dropout voltage (57% improvement). The TPS7A2401DBVR also provides superior PSRR performance (75dB at 10Hz) and higher maximum input voltage (18V vs. 16V).

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL Level 1 (unlimited moisture sensitivity), ensuring compatibility with standard manufacturing and storage protocols. REACH compliance status is identical across all options.

Frequently Asked Questions (FAQ)

Q: Can LP2985-10DBVR directly replace LP2985A-10DBVT without PCB modification?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, package type (SOT-23-5), and pinout. The difference between DBVR (tape reel) and DBVT (cut tape) variants is packaging format only; electrical performance is identical. No PCB modification is required.

Q: What is the difference between LP2985A-10DBVR and LP2985-10DBVR?

A: The "A" suffix indicates a manufacturing lot code variant. Both parts share identical electrical specifications, output voltage (10V fixed), current rating (150mA), dropout voltage (0.58V), and protection features. The A-suffix does not indicate a performance difference; it reflects manufacturing traceability. Both are Last Time Buy status.

Q: Why is TPS7A2401DBVR listed as a substitute if it has adjustable output?

A: The TPS7A2401DBVR is the manufacturer-recommended upgrade for applications transitioning away from Last Time Buy LP2985 devices. Although it operates in adjustable mode (1.24V to 17.75V), it can be configured for 10V fixed output using external resistor dividers on the feedback pin. This requires PCB design modification but provides superior performance (lower quiescent current, better dropout voltage, higher output current) and Active product status for long-term availability.

Q: Are all substitute parts available in SOT-23-5 package?

A: Yes. All listed substitute parts—LP2985A-10DBVR, LP2985-10DBVR, LP2985-10DBVT, and TPS7A2401DBVR—are available exclusively in SOT-23-5 package (SC-74A, SOT-753 designation). Package compatibility is maintained across all options.

Q: What is the impact of selecting TPS7A2401DBVR on power consumption?

A: The TPS7A2401DBVR reduces quiescent current from 95µA to 4.5µA, a 95% reduction. For battery-powered or low-power applications, this represents significant power savings. Additionally, the lower dropout voltage (0.25V vs. 0.58V) reduces power dissipation in the regulator itself, improving thermal performance and extending battery life in portable applications.

Q: Can I use LP2985A-10DBVT in new product designs?

A: The LP2985A-10DBVT carries Last Time Buy status, indicating end-of-life classification. While current inventory is available (4095 pcs), Texas Instruments will not produce additional units. For new designs requiring long-term support and future availability, the TPS7A2401DBVR (Active status) is the recommended choice despite requiring design modification for 10V output configuration.

Q: What protection features are included in each substitute part?

A: LP2985 series variants (LP2985A-10DBVR, LP2985-10DBVR, LP2985-10DBVT) include Over-Current Protection (OCP), Over-Temperature Protection (OTP), and Short-Circuit Protection (SCP). The TPS7A2401DBVR includes OCP, OTP, and Under-Voltage Lockout (UVLO), providing additional protection against low input voltage conditions.