LP2954AIM Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP2954AIM is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This device delivers 250mA output current with adjustable voltage regulation from 1.23V to 29V, making it suitable for general-purpose power management circuits requiring low dropout performance. The main part number LP2954AIM is currently in Last Time Buy status with 4400 units in stock. Due to product lifecycle transitions, equivalent substitute parts with Active status are available to ensure design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable
Number of Regulators	1
Voltage - Input (Max)	30V
Voltage - Output (Min/Fixed)	1.23V
Voltage - Output (Max)	29V
Voltage Dropout (Max)	0.8V @ 250mA
Current - Output	250mA
Current - Quiescent (Iq)	150 µA
Current - Supply (Max)	33 mA
Control Features	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the LP2954AIM are identified based on strict electrical and mechanical parameter matching within the LP2954 product family. All substitute parts maintain identical specifications across the following critical parameters:

Output configuration (Positive)
Output type (Adjustable)
Voltage ratings (Input Max: 30V, Output Min: 1.23V, Output Max: 29V)
Current specifications (Output: 250mA, Quiescent: 150 µA)
Dropout voltage (0.8V @ 250mA)
Protection features (Over Current, Over Temperature, Reverse Polarity)
Operating temperature range (-40°C ~ 125°C)
Package type (8-SOIC)
Compliance certifications (ROHS3, REACH Unaffected)

The substitutes differ only in packaging format (Tube vs. standard) and product lifecycle status, with no electrical or functional differences.

Parameter Comparison

Parameter	LP2954AIM	LP2954AIM/NOPB	LP2954IM/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable
Voltage - Input (Max)	30V	30V	30V
Voltage - Output (Min/Fixed)	1.23V	1.23V	1.23V
Voltage - Output (Max)	29V	29V	29V
Voltage Dropout (Max)	0.8V @ 250mA	0.8V @ 250mA	0.8V @ 250mA
Current - Output	250mA	250mA	250mA
Current - Quiescent (Iq)	150 µA	150 µA	150 µA
Current - Supply (Max)	33 mA	33 mA	33 mA
Control Features	Enable	Enable	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Last Time Buy	Active	Active
Packaging Format	Standard	Tube	Tube
Inventory (Pcs)	4400	3936	2140

Engineering Selection Recommendations

LP2954AIM/NOPB and LP2954IM/NOPB are direct parametric equivalents to LP2954AIM with identical electrical and mechanical specifications. Both substitute parts carry Active product status, ensuring long-term availability and supply chain continuity compared to the Last Time Buy status of the main part number.

Selection between substitute parts should be based on packaging requirements and inventory availability. LP2954AIM/NOPB is supplied in Tube packaging with 3936 units in stock. LP2954IM/NOPB is also supplied in Tube packaging with 2140 units in stock. All three part numbers maintain full compliance with ROHS3 and REACH regulations, with MSL rating of 1 (Unlimited) for moisture sensitivity.

Frequently Asked Questions (FAQ)

Q: Can LP2954AIM/NOPB and LP2954IM/NOPB be used interchangeably with LP2954AIM?

A: Yes. All three part numbers are electrically and mechanically identical. They share the same output voltage range (1.23V to 29V), current rating (250mA), dropout voltage (0.8V @ 250mA), protection features, and 8-SOIC package dimensions. The differences are limited to product lifecycle status and packaging format.

Q: What is the significance of the /NOPB suffix in the substitute part numbers?

A: The /NOPB suffix indicates the part is supplied without plumbum (lead-free). This designation confirms ROHS3 compliance and environmental regulation adherence. Both LP2954AIM/NOPB and LP2954IM/NOPB carry this designation.

Q: Why is LP2954AIM listed as Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this specific part number variant. Substitute parts with Active status (LP2954AIM/NOPB and LP2954IM/NOPB) are recommended for new designs and long-term supply assurance.

Q: Are there any differences in the 8-SOIC package between these part numbers?

A: No. All three part numbers use the identical 8-SOIC package with 0.154" width (3.90mm). PCB footprints and board-level integration are fully compatible.

Q: What protection features are included in all three part numbers?

A: All variants include Over Current, Over Temperature, and Reverse Polarity protection. These features are consistent across LP2954AIM, LP2954AIM/NOPB, and LP2954IM/NOPB.

Q: Is the operating temperature range the same for all substitute parts?

A: Yes. All three part numbers operate across the identical temperature range of -40°C to 125°C, with no derating or functional limitations between variants.

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