LP2985-30DBVTG4 Equivalent & Substitute Parts

Part Overview

The LP2985-30DBVTG4 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V output at 150mA in SOT-23-5 surface mount packaging. This part is classified as Last Time Buy, indicating limited future availability. Identifying equivalent and substitute parts ensures design continuity and supply chain resilience for applications requiring 3V regulated power with low dropout characteristics and integrated protection features.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LP2985-30DBVTG4
Output Voltage	3V Fixed
Output Current	150mA
Input Voltage (Max)	16V
Dropout Voltage	0.58V @ 150mA
Quiescent Current	95 µA
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LP2985-30DBVTG4 are classified into two categories based on electrical and mechanical compatibility:

Manufacturer Recommended Substitutes (MFR Recommended): Parts that maintain identical electrical specifications and packaging, with active product status ensuring long-term availability. These include LP2985AIM5-3.0/NOPB, LP2985AIM5X-3.0/NOPB, LP2985IM5X-3.0/NOPB, and LD2985BM30R from STMicroelectronics.

Parametric Equivalents: Parts sharing the same output voltage (3V), output current (150mA), dropout voltage (0.58V @ 150mA), quiescent current (95 µA), operating temperature range (-40°C to 125°C), and SOT-23-5 packaging. These include LP2985-30DBVR, LP2985-30DBVT, LP2985A-30DBVR, LP2985A-30DBVT, and LP2985IM5-3.0/NOPB.

Higher Current Alternative: LP2992IM5-3.0/NOPB provides 250mA output current with identical voltage regulation and package, suitable for applications requiring increased current capacity.

Key substitution criteria: Output voltage (3V), output current rating (150mA or higher), dropout voltage performance, SOT-23-5 package compatibility, and operating temperature range (-40°C to 125°C).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Dropout Voltage	Quiescent Current	Package	Product Status	Packaging Type
LP2985-30DBVTG4	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	Last Time Buy	Tape & Reel
LP2985AIM5-3.0/NOPB	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	Active	Tape & Reel
LP2985AIM5X-3.0/NOPB	National Semiconductor	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	Active	Not Specified
LP2985IM5X-3.0/NOPB	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	Active	Cut Tape & Digi-Reel
LP2992IM5-3.0/NOPB	Texas Instruments	3V	250mA	0.85V @ 250mA	95 µA	SOT-23-5	Active	Cut Tape & Digi-Reel
LP2985-30DBVR	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	Active	Cut Tape & Digi-Reel
LP2985-30DBVT	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	Last Time Buy	Cut Tape
LP2985A-30DBVR	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	Active	Cut Tape & Digi-Reel
LP2985A-30DBVT	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	Active	Tape & Reel
LP2985IM5-3.0/NOPB	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	Active	Tape & Reel
LD2985BM30R	STMicroelectronics	3V	150mA	0.575V @ 150mA	150 µA	SOT-23-5	Active	Tape & Reel

Engineering Selection Recommendations

For applications currently using LP2985-30DBVTG4, the following selection criteria apply:

Primary Recommendation: LP2985AIM5-3.0/NOPB or LP2985A-30DBVR. Both are Texas Instruments products with Active product status, ensuring long-term availability. These parts maintain identical electrical specifications and ROHS3 compliance with the original part.

Alternative from Active Inventory: LP2985-30DBVR offers the highest inventory availability (80,400 pcs) with identical electrical performance and Active status. Packaging is Cut Tape & Digi-Reel, suitable for high-volume production.

Cross-Manufacturer Option: LD2985BM30R from STMicroelectronics provides functional equivalence with Active status. Quiescent current is specified at 150 µA versus 95 µA for Texas Instruments variants, and dropout voltage is 0.575V. This part is suitable where cross-manufacturer qualification is acceptable.

Higher Current Requirement: LP2992IM5-3.0/NOPB supports 250mA output current in the same SOT-23-5 package. Select this variant only if application current requirements exceed 150mA.

Avoid: LP2985-30DBVT and LP2985-30DBVTG4 are both Last Time Buy status, indicating limited future availability. Transition to Active status parts for new designs or long-term production.

Frequently Asked Questions (FAQ)

Q: Can LP2985-30DBVR directly replace LP2985-30DBVTG4? A: Yes. Both parts share identical electrical specifications: 3V output, 150mA current, 0.58V dropout voltage, 95 µA quiescent current, and SOT-23-5 packaging. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and product status (Active versus Last Time Buy). Electrical performance is equivalent.

Q: What is the difference between LP2985AIM5-3.0/NOPB and LP2985IM5X-3.0/NOPB? A: Both are Texas Instruments 3V/150mA regulators in SOT-23-5 packaging with identical electrical specifications. LP2985AIM5-3.0/NOPB is supplied in Tape & Reel with higher inventory (23,780 pcs). LP2985IM5X-3.0/NOPB is supplied in Cut Tape & Digi-Reel with lower inventory (3,250 pcs). Select based on packaging and supply requirements.

Q: Is LD2985BM30R from STMicroelectronics a suitable substitute? A: LD2985BM30R is functionally equivalent for 3V/150mA applications. Differences include quiescent current (150 µA versus 95 µA) and dropout voltage (0.575V versus 0.58V). These differences are minor and acceptable for most applications. Verify cross-manufacturer qualification requirements before selection.

Q: When should LP2992IM5-3.0/NOPB be selected instead of LP2985 variants? A: Select LP2992IM5-3.0/NOPB only if application current requirements exceed 150mA. This part provides 250mA output current in the same SOT-23-5 package. Dropout voltage increases to 0.85V at 250mA. For 150mA or lower applications, LP2985 variants are preferred.

Q: Are all substitute parts ROHS3 compliant? A: All listed Texas Instruments parts (LP2985 and LP2992 series) are ROHS3 compliant. LD2985BM30R from STMicroelectronics is also ROHS3 compliant. All parts have Moisture Sensitivity Level 1 (Unlimited).

Q: What packaging options are available for equivalent parts? A: Substitute parts are available in three packaging formats: Tape & Reel (TR), Cut Tape (CT), and Cut Tape & Digi-Reel. All maintain SOT-23-5 component packaging. Select based on production volume and handling requirements.

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