LP2985IM5-3.0 Equivalent & Substitute Parts

Part Overview

The LP2985IM5-3.0 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed positive 3V output at 150mA in a surface-mount SOT-23-5 package. The main part is currently listed as obsolete, which necessitates identification of equivalent and substitute components for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LP2985IM5-3.0
Output Voltage (Fixed)	3V
Output Current	150mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.58V @ 150mA
Quiescent Current	95 µA
Package Type	SOT-23-5 (SC-74A)
Operating Temperature Range	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable
PSRR	45dB (1kHz)
Part Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the LP2985IM5-3.0 is determined by the following critical parameters:

Primary Substitution Criteria:

Fixed output voltage of 3V
Output current capability of 150mA or greater
Maximum input voltage of 16V or higher
SOT-23-5 package compatibility
Operating temperature range of -40°C to 125°C
Surface-mount technology

Substitution Categories:

Direct Manufacturer Equivalents (Texas Instruments LP2985 Series): Parts sharing identical electrical specifications and the same base product number (LP2985) with variations in packaging format and RoHS compliance status. These include LP2985IM5-3.0/NOPB, LP2985-30DBVR, LP2985-30DBVT, LP2985A-30DBVR, LP2985A-30DBVT, LP2985AIM5-3.0/NOPB, and LP2985AIM5X-3.0/NOPB.

Parametric Equivalents (Cross-Manufacturer): Parts from alternative manufacturers (STMicroelectronics, Analog Devices Inc.) that meet the core electrical requirements. These include LD2985BM30R and LT1761ES5-3#TRMPBF, which maintain functional compatibility within specified parameter tolerances.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage (Max)	Quiescent Current	Package	Status	RoHS Compliance
LP2985IM5-3.0	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	SOT-23-5	Obsolete	Non-compliant
LP2985IM5-3.0/NOPB	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	SOT-23-5	Active	ROHS3 Compliant
LP2985-30DBVR	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	SOT-23-5	Active	ROHS3 Compliant
LP2985-30DBVT	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	SOT-23-5	Last Time Buy	ROHS3 Compliant
LP2985A-30DBVR	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	SOT-23-5	Active	ROHS3 Compliant
LP2985A-30DBVT	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	SOT-23-5	Active	ROHS3 Compliant
LP2985AIM5-3.0/NOPB	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	SOT-23-5	Active	ROHS3 Compliant
LP2985AIM5X-3.0/NOPB	National Semiconductor	3V	150mA	16V	0.58V @ 150mA	95 µA	SOT-23-5	Active	Not specified
LP2985IM5X-3.0/NOPB	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	SOT-23-5	Active	ROHS3 Compliant
LD2985BM30R	STMicroelectronics	3V	150mA	16V	0.575V @ 150mA	150 µA	SOT-23-5	Active	ROHS3 Compliant
LT1761ES5-3#TRMPBF	Analog Devices Inc.	3V	100mA	20V	0.45V @ 100mA	Not specified	TSOT-23-5	Active	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Highest Compatibility):

LP2985IM5-3.0/NOPB, LP2985-30DBVR, LP2985A-30DBVR, LP2985AIM5-3.0/NOPB, and LP2985IM5X-3.0/NOPB are direct functional equivalents from Texas Instruments. All maintain identical electrical specifications to the obsolete LP2985IM5-3.0. Selection among these should be based on product status and packaging format availability. LP2985IM5-3.0/NOPB, LP2985-30DBVR, LP2985A-30DBVR, and LP2985AIM5-3.0/NOPB carry Active status. LP2985-30DBVT carries Last Time Buy status. All Tier 1 options are ROHS3 compliant, addressing regulatory requirements that the original part does not meet.

Tier 2 - Parametric Equivalents (Functional Compatibility):

LD2985BM30R from STMicroelectronics maintains the same output voltage, current rating, and package type. Dropout voltage is marginally lower (0.575V versus 0.58V), and quiescent current is slightly higher (150 µA versus 95 µA). This part is Active and ROHS3 compliant.

LT1761ES5-3#TRMPBF from Analog Devices Inc. operates at 3V output with a lower current rating of 100mA. This part is suitable only for applications requiring 100mA or less. It offers superior dropout voltage (0.45V) and higher input voltage tolerance (20V maximum). The TSOT-23-5 package is mechanically compatible with SOT-23-5 footprints. This part is Active and ROHS3 compliant.

Compliance Considerations:

The original LP2985IM5-3.0 is RoHS non-compliant. All recommended substitutes are ROHS3 compliant, supporting modern manufacturing and environmental standards. All parts carry EAR99 ECCN classification and are REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can LP2985IM5-3.0/NOPB be used as a direct replacement for LP2985IM5-3.0?

A: Yes. LP2985IM5-3.0/NOPB is electrically and mechanically identical to the obsolete LP2985IM5-3.0. The primary difference is product status (Active versus Obsolete) and RoHS compliance (ROHS3 Compliant versus Non-compliant). The "/NOPB" suffix indicates lead-free solder ball construction, which is standard for modern manufacturing.

Q: What is the difference between LP2985-30DBVR and LP2985-30DBVT?

A: Both parts are electrically identical with 3V output and 150mA current rating. The difference is packaging format: LP2985-30DBVR is supplied in Cut Tape (CT) & Digi-Reel® format, while LP2985-30DBVT is supplied in Cut Tape (CT) format. LP2985-30DBVR is Active; LP2985-30DBVT is Last Time Buy. Selection depends on packaging requirements and supply continuity needs.

Q: Can LT1761ES5-3#TRMPBF replace LP2985IM5-3.0 in all applications?

A: LT1761ES5-3#TRMPBF is suitable only for applications requiring 100mA or less output current. The LP2985IM5-3.0 is rated for 150mA. If your application requires the full 150mA capability, LT1761ES5-3#TRMPBF is not appropriate. For applications using 100mA or less, LT1761ES5-3#TRMPBF offers superior dropout voltage and higher input voltage tolerance.

Q: Is LD2985BM30R from STMicroelectronics a suitable alternative?

A: Yes, for applications where the slightly higher quiescent current (150 µA versus 95 µA) is acceptable. LD2985BM30R maintains the same 3V output, 150mA current rating, and SOT-23-5 package. Dropout voltage is marginally lower at 0.575V. This part is Active and ROHS3 compliant.

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

A: All listed substitutes use SOT-23-5 or TSOT-23-5 packages, which are mechanically compatible. TSOT-23-5 (used by LT1761ES5-3#TRMPBF) is a thin variant of SOT-23-5 and fits standard SOT-23-5 footprints.

Q: What is the significance of the "A" variant in LP2985A parts?

A: LP2985A variants are functionally equivalent to standard LP2985 parts with identical electrical specifications. The "A" designation indicates a product line variant. Selection between LP2985 and LP2985A should be based on availability and supply chain requirements, as electrical performance is equivalent.

Q: Why is LP2985IM5-3.0 listed as obsolete?

A: The original LP2985IM5-3.0 is RoHS non-compliant. Texas Instruments has transitioned to ROHS3-compliant variants (LP2985IM5-3.0/NOPB and others) to meet current regulatory and manufacturing standards. The obsolete designation reflects this product lifecycle transition.

Q: Can I mix different substitute parts in the same production run?

A: All Tier 1 substitutes (LP2985 series from Texas Instruments) are electrically and mechanically identical and can be used interchangeably. Cross-manufacturer substitution (LD2985BM30R, LT1761ES5-3#TRMPBF) should be evaluated based on specific application requirements and quiescent current tolerance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message