LP2985-30DBVT Equivalent & Substitute Parts

Part Overview

The LP2985-30DBVT 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 device is classified as Last Time Buy, indicating end-of-life status. Finding equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring 3V regulated power with 150mA output capability.

Key Parameters

Parameter	Value
Manufacturer Part Number	LP2985-30DBVT
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage (Fixed)	3V
Output Current	150mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.58V @ 150mA
Quiescent Current	95 µA
Package / Case	SC-74A, SOT-753 (SOT-23-5)
Operating Temperature	-40°C ~ 125°C
Product Status	Last Time Buy
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the LP2985-30DBVT is determined by the following critical parameters: fixed 3V output voltage, 150mA output current capability, SOT-23-5 package compatibility, maximum input voltage of 16V, dropout voltage performance at rated current, and operating temperature range of -40°C to 125°C. Parts are grouped into two categories:

MFR Recommended Substitutes maintain identical electrical specifications and packaging, differing only in manufacturer or packaging format (Cut Tape vs. Tape & Reel).

Parametric Equivalents are Texas Instruments variants of the LP2985 series with identical performance characteristics but different part number designations or packaging configurations.

A higher-current variant (LP2992IM5-3.0/NOPB at 250mA) is included as a functional upgrade option for applications requiring additional current margin, though it introduces different dropout voltage characteristics.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Dropout Voltage (Max)	Quiescent Current	Package	Operating Temp	Product Status
LP2985-30DBVT	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	-40°C ~ 125°C	Last Time Buy
LP2985AIM5X-3.0/NOPB	National Semiconductor	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	-40°C ~ 125°C	Active
LP2985IM5-3.0/NOPB	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	-40°C ~ 125°C	Active
LP2985IM5X-3.0/NOPB	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	-40°C ~ 125°C	Active
LP2985-30DBVR	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	-40°C ~ 125°C	Active
LP2985A-30DBVR	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	-40°C ~ 125°C	Active
LP2985A-30DBVT	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	-40°C ~ 125°C	Active
LP2985AIM5-3.0/NOPB	Texas Instruments	3V	150mA	0.58V @ 150mA	95 µA	SOT-23-5	-40°C ~ 125°C	Active
LD2985BM30R	STMicroelectronics	3V	150mA	0.575V @ 150mA	150 µA	SOT-23-5	-40°C ~ 125°C	Active
LP2992IM5-3.0/NOPB	Texas Instruments	3V	250mA	0.85V @ 250mA	95 µA	SOT-23-5	-40°C ~ 125°C	Active
BD00FA1WEFJ-E2	Rohm Semiconductor	3V (Adjustable 3V-12V)	100mA	3V @ 100mA	450 µA	8-SOIC	-25°C ~ 85°C	Active

Engineering Selection Recommendations

Direct Replacements (Identical Specifications): LP2985IM5-3.0/NOPB, LP2985IM5X-3.0/NOPB, LP2985-30DBVR, LP2985A-30DBVR, LP2985A-30DBVT, and LP2985AIM5-3.0/NOPB are all Active status parts with identical electrical performance and SOT-23-5 packaging. These parts are suitable for direct substitution in existing designs. LP2985AIM5X-3.0/NOPB from National Semiconductor provides equivalent functionality with Active product status.

STMicroelectronics Alternative: LD2985BM30R maintains the same 3V output, 150mA current, SOT-23-5 package, and operating temperature range. Quiescent current is slightly higher at 150 µA versus 95 µA, and dropout voltage is marginally lower at 0.575V. This part is suitable for applications where the quiescent current difference is acceptable.

Higher Current Option: LP2992IM5-3.0/NOPB provides 250mA output current in the same SOT-23-5 package, suitable for designs requiring additional current margin. Dropout voltage increases to 0.85V at 250mA, which must be evaluated against application requirements.

Limited Compatibility: BD00FA1WEFJ-E2 from Rohm Semiconductor is not recommended as a direct substitute. It features adjustable output voltage (3V-12V), different package (8-SOIC), lower output current (100mA), significantly higher dropout voltage (3V), higher quiescent current (450 µA), and narrower operating temperature range (-25°C to 85°C). This part is suitable only for applications with fundamentally different requirements.

All recommended substitutes maintain ROHS3 compliance and are currently in Active production status, ensuring long-term availability.

Frequently Asked Questions (FAQ)

Q: Can I use LP2985IM5X-3.0/NOPB as a direct replacement for LP2985-30DBVT?

A: Yes. Both parts deliver 3V fixed output at 150mA with identical dropout voltage (0.58V @ 150mA), quiescent current (95 µA), and SOT-23-5 packaging. The primary difference is packaging format: LP2985IM5X-3.0/NOPB is supplied in Cut Tape & Digi-Reel format, while LP2985-30DBVT is Cut Tape. Electrical performance is identical.

Q: What is the difference between LP2985A and LP2985 variants?

A: Both LP2985 and LP2985A variants maintain identical electrical specifications for the 3V fixed output 150mA configuration. Differences are limited to internal design revisions or manufacturing process updates. All variants listed are electrically interchangeable for this application.

Q: Is LD2985BM30R from STMicroelectronics a suitable substitute?

A: LD2985BM30R is functionally compatible with identical 3V output, 150mA current, and SOT-23-5 packaging. Quiescent current is 150 µA (versus 95 µA in the original), and dropout voltage is 0.575V (versus 0.58V). These differences are minor and acceptable for most applications. Verify power dissipation and standby current requirements in your specific design.

Q: Can I use LP2992IM5-3.0/NOPB as a substitute?

A: LP2992IM5-3.0/NOPB is a higher-current variant (250mA versus 150mA) in the same SOT-23-5 package with identical 3V output. It is suitable for applications requiring additional current margin. However, dropout voltage increases to 0.85V at 250mA. Evaluate whether the increased dropout voltage affects your input voltage budget and thermal performance.

Q: Why is BD00FA1WEFJ-E2 not recommended?

A: BD00FA1WEFJ-E2 differs significantly from the LP2985-30DBVT. It features adjustable output voltage (3V-12V range), different package (8-SOIC versus SOT-23-5), lower output current (100mA versus 150mA), much higher dropout voltage (3V versus 0.58V), higher quiescent current (450 µA versus 95 µA), and narrower operating temperature range (-25°C to 85°C versus -40°C to 125°C). This part is suitable only for applications with fundamentally different electrical requirements.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitutes maintain ROHS3 compliance, ensuring compatibility with RoHS-regulated applications and supply chains.

Q: What packaging formats are available for LP2985 variants?

A: LP2985 variants are available in Cut Tape (CT), Tape & Reel (TR), and Cut Tape & Digi-Reel formats. Verify your assembly process requirements and order quantities to select the appropriate packaging format. Electrical performance is identical across all packaging options.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message