LP2985IM5-2.0/NOPB Equivalent & Substitute Parts

Part Overview

The LP2985IM5-2.0/NOPB is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed 2V output at 150mA with low dropout characteristics, designed for surface mount applications in the SOT-23-5 package. The main part is currently in Active product status with 1333 units in stock. Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design revisions call for equivalent functionality from different manufacturers or product variants.

Substiute Parts

LP2985IM5-2.0/NOPB

Texas InstrumentsIn Stock: 1435LP2985IM5-2.0/NOPB Datasheet

Current PartRFQ

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

Key Parameters

Substitute Part Grouping Explanation

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

Parametric Equivalents (Texas Instruments LP2985 Series): LP2985AIM5-2.0/NOPB, LP2985AIM5X-2.0/NOPB, and LP2985IM5X-2.0/NOPB share identical electrical specifications with the main part, including 2V fixed output, 150mA output current, 0.58V dropout voltage, and SOT-23-5 package compatibility. These parts differ only in product status (Obsolete or Last Time Buy) and packaging format (Cut Tape, Digi-Reel, or Bulk). Substitution among these variants is direct for applications where packaging format and product lifecycle status are acceptable.

Manufacturer Recommended Equivalent (Analog Devices LT1761 Series): The LT1761ES5-2#TRMPBF is designated as the manufacturer-recommended substitute. While maintaining the same 2V fixed output voltage, SOT-23-5 package, and operating temperature range, this part differs in output current (100mA versus 150mA), maximum input voltage (20V versus 16V), dropout voltage (0.45V @ 100mA), and PSRR specification (65dB @ 120Hz versus 45dB @ 1kHz). The LT1761ES5-2#TRMPBF is suitable only for applications where the reduced output current and improved dropout characteristics are compatible with system requirements.

Key parameters determining substitution eligibility: fixed output voltage (2V), package type (SOT-23-5), operating temperature range (-40°C ~ 125°C), and output current capability.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (Texas Instruments LP2985 Variants): The LP2985AIM5-2.0/NOPB, LP2985AIM5X-2.0/NOPB, and LP2985IM5X-2.0/NOPB are electrically and mechanically equivalent to the LP2985IM5-2.0/NOPB. Selection among these variants depends on product lifecycle requirements and packaging format availability. The LP2985IM5X-2.0/NOPB offers the highest inventory availability (3818 units) and Active product status, making it the preferred alternative when the primary part becomes unavailable. The LP2985AIM5X-2.0/NOPB maintains Active status with Tape & Reel packaging but lower inventory (856 units). The LP2985AIM5-2.0/NOPB is marked Obsolete and should be avoided for new designs unless legacy compatibility is required.

Cross-Manufacturer Substitution (Analog Devices LT1761ES5-2#TRMPBF): This part is suitable only when application requirements accommodate reduced output current (100mA maximum versus 150mA). The LT1761ES5-2#TRMPBF provides superior dropout voltage performance (0.45V @ 100mA) and higher input voltage tolerance (20V maximum), with improved PSRR specification (65dB @ 120Hz). This part is Active with high inventory availability (3992 units) and full RoHS3 compliance. Use this substitute only when load current does not exceed 100mA and when the improved electrical characteristics provide system-level benefits.

Frequently Asked Questions (FAQ)

Q: Can I use LP2985AIM5-2.0/NOPB as a direct replacement for LP2985IM5-2.0/NOPB?

A: Yes, the LP2985AIM5-2.0/NOPB is electrically and mechanically equivalent. However, this part is marked Obsolete. For new designs, use LP2985IM5X-2.0/NOPB (Active status, higher inventory) or LP2985AIM5X-2.0/NOPB (Last Time Buy status) instead.

Q: What is the difference between LP2985IM5X-2.0/NOPB and LP2985IM5-2.0/NOPB?

A: Both parts are electrically identical with 2V output, 150mA current, and SOT-23-5 package. The primary difference is packaging format: LP2985IM5-2.0/NOPB is supplied in Tape & Reel, while LP2985IM5X-2.0/NOPB is supplied in Bulk. LP2985IM5X-2.0/NOPB has higher inventory availability.

Q: Can I substitute the LT1761ES5-2#TRMPBF for the LP2985IM5-2.0/NOPB?

A: The LT1761ES5-2#TRMPBF is compatible only if your application requires maximum output current of 100mA or less. This part offers improved dropout voltage (0.45V @ 100mA) and higher input voltage tolerance (20V). If your design requires 150mA output current, this substitute is not suitable.

Q: Are all substitute parts RoHS3 compliant?

A: The LP2985 series variants (LP2985AIM5-2.0/NOPB, LP2985AIM5X-2.0/NOPB) and LT1761ES5-2#TRMPBF are confirmed ROHS3 Compliant. The LP2985IM5X-2.0/NOPB RoHS status is not specified in available documentation.

Q: What is the moisture sensitivity level for these parts?

A: The LP2985IM5-2.0/NOPB, LP2985AIM5-2.0/NOPB, LP2985AIM5X-2.0/NOPB, and LT1761ES5-2#TRMPBF all have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Which substitute part has the best availability?

A: The LT1761ES5-2#TRMPBF has the highest inventory at 3992 units, followed by LP2985IM5X-2.0/NOPB at 3818 units. Both are Active products with immediate availability.