LP2985IM5-2.0 Equivalent & Substitute Parts

Part Overview

The LP2985IM5-2.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This device delivers 150mA output current with a fixed 2V output and operates across an input voltage range up to 16V. The part is classified as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The LP2985IM5-2.0 integrates over-current, over-temperature, and short-circuit protection with an enable control feature, suitable for low-noise applications requiring stable 2V regulation in space-constrained surface-mount designs.

Substiute Parts

LP2985IM5-2.0

Texas InstrumentsIn Stock: 4192LP2985IM5-2.0 Datasheet

Current PartRFQ

LP2985IM5-2.0/NOPB

Texas InstrumentsIn Stock: 1435LP2985IM5-2.0/NOPB Datasheet

DirectRFQ

LP2985AIM5-2.0/NOPB

Texas InstrumentsIn Stock: 981LP2985AIM5-2.0/NOPB Datasheet

Parametric EquivalentRFQ

LP2985AIM5X-2.0/NOPB

Texas InstrumentsIn Stock: 916LP2985AIM5X-2.0/NOPB Datasheet

Parametric EquivalentRFQ

LP2985IM5X-2.0/NOPB

National SemiconductorIn Stock: 3904LP2985IM5X-2.0/NOPB Datasheet

Parametric EquivalentRFQ

LT1761ES5-2#TRMPBF

Analog Devices Inc.In Stock: 4101LT1761ES5-2#TRMPBF Datasheet

MFR RecommendedRFQ

LT1761ES5-2#TRPBF

Analog Devices Inc.In Stock: 3468LT1761ES5-2#TRPBF Datasheet

MFR RecommendedRFQ

LT1761IS5-2#TRPBF

Analog Devices Inc.In Stock: 3157LT1761IS5-2#TRPBF Datasheet

MFR RecommendedRFQ

MIC5247-2.0YM5-TR

Microchip TechnologyIn Stock: 2401MIC5247-2.0YM5-TR Datasheet

MFR RecommendedRFQ

XC6209B202MR-G

Torex Semiconductor LtdIn Stock: 1072XC6209B202MR-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2985IM5-2.0 are classified into three categories based on electrical and mechanical compatibility:

Direct Equivalents (Same Manufacturer - Texas Instruments) These parts share identical electrical specifications and package form factors. Substitution is based on matching output voltage (2V fixed), output current capability (150mA), input voltage rating (16V maximum), dropout voltage (0.58V @ 150mA), and SOT-23-5 package compatibility. Differences exist only in product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Cut Tape).

Parametric Equivalents (Same Manufacturer - Texas Instruments) These parts maintain core electrical parameters but may differ in product lifecycle status. Key matching criteria include 2V fixed output, 150mA output current, 16V maximum input voltage, 0.58V dropout voltage, and SOT-23-5 package. The "X" designation indicates extended temperature or processing variants.

Cross-Manufacturer Equivalents (Analog Devices Inc., Microchip Technology, Torex Semiconductor) These parts provide functional equivalence with variations in specific parameters. The LT1761 series from Analog Devices delivers 100mA output (lower than 150mA) with improved dropout voltage (0.45V @ 100mA) and higher input voltage rating (20V). The MIC5247-2.0YM5-TR from Microchip maintains 150mA output but operates with maximum 6V input and superior dropout voltage (0.15V @ 150mA). The XC6209B202MR-G from Torex provides 150mA output with 10V maximum input and lower quiescent current (50 µA).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance) Select LP2985IM5-2.0/NOPB or LP2985IM5X-2.0/NOPB. Both maintain 150mA output current, 16V input rating, and 0.58V dropout voltage. LP2985IM5-2.0/NOPB carries Active product status with ROHS3 compliance. LP2985IM5X-2.0/NOPB is available in higher quantity (3818 Pcs) and also maintains ROHS3 compliance.

For Applications with Lower Output Current Requirements (≤100mA) The LT1761 series (ES5-2#TRMPBF, ES5-2#TRPBF, or IS5-2#TRPBF) from Analog Devices provides superior performance with 0.45V dropout voltage and higher input voltage tolerance (20V maximum). All variants are Active status with ROHS3 compliance. These are suitable when output current demand does not exceed 100mA.

For Low Input Voltage Applications (≤6V) The MIC5247-2.0YM5-TR from Microchip Technology delivers exceptional dropout voltage performance (0.15V @ 150mA) and maintains 150mA output capability. This part is optimized for low-voltage input scenarios and carries Active status with ROHS3 compliance.

For Lowest Quiescent Current Applications The XC6209B202MR-G from Torex Semiconductor provides the lowest quiescent current (50 µA) with superior PSRR (70dB @ 10kHz). This part operates with 10V maximum input and 150mA output, suitable for battery-powered or low-power standby applications. Active status with ROHS3 compliance.

All recommended substitutes maintain SOT-23-5 or compatible package form factors, -40°C to 125°C operating temperature range (except XC6209B202MR-G at -40°C to 85°C), and equivalent protection features.

Frequently Asked Questions (FAQ)

Q: Can I use LP2985IM5-2.0/NOPB as a direct replacement for LP2985IM5-2.0? A: Yes. Both parts share identical electrical specifications: 150mA output, 2V fixed output, 16V maximum input, and 0.58V dropout voltage. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard). The /NOPB variant is preferred for new designs due to Active status.

Q: What is the difference between LP2985AIM5-2.0/NOPB and LP2985IM5-2.0/NOPB? A: Both parts are electrically identical with 150mA output and 2V fixed regulation. The "A" designation indicates a different manufacturing grade or temperature specification variant. LP2985IM5-2.0/NOPB is Active status, while LP2985AIM5-2.0/NOPB is Obsolete. For new designs, use the Active variant.

Q: Can I substitute an LT1761 for the LP2985IM5-2.0 in all applications? A: The LT1761 series provides functional equivalence with 2V fixed output but delivers only 100mA maximum output current compared to 150mA. Substitution is valid only if your application requires ≤100mA. The LT1761 offers superior dropout voltage (0.45V @ 100mA) and higher input voltage rating (20V), making it preferable for low-dropout applications.

Q: What are the package differences between SOT-23-5 and TSOT-23-5? A: TSOT-23-5 is a thin variant of SOT-23-5 with reduced height. Both are mechanically compatible in most PCB layouts, but verify footprint dimensions for space-constrained designs. The LT1761 series uses TSOT-23-5 packaging.

Q: Is the MIC5247-2.0YM5-TR suitable for 16V input applications? A: No. The MIC5247-2.0YM5-TR is rated for maximum 6V input voltage, compared to 16V for the LP2985IM5-2.0. This part is suitable only for applications with input voltage ≤6V. For higher input voltages, use LP2985 variants or LT1761 series (20V maximum).

Q: Why does the XC6209B202MR-G have a different operating temperature range? A: The XC6209B202MR-G operates from -40°C to 85°C, compared to -40°C to 125°C for the LP2985IM5-2.0. This part is suitable for applications not requiring the full 125°C upper temperature limit. Verify your application's temperature requirements before substitution.

Q: Are all substitute parts RoHS3 compliant? A: The LP2985IM5-2.0 is RoHS non-compliant. All recommended substitutes (LP2985IM5-2.0/NOPB, LT1761 series, MIC5247-2.0YM5-TR, and XC6209B202MR-G) are ROHS3 compliant, making them suitable for applications requiring RoHS compliance.

Q: What does "Last Time Buy" status mean for LP2985AIM5X-2.0/NOPB? A: Last Time Buy indicates the manufacturer will accept orders only until a specified date, after which the part will be discontinued. This part should not be selected for new designs. Use Active status parts such as LP2985IM5-2.0/NOPB or cross-manufacturer equivalents instead.