LP2980IM5X-3.3 Equivalent & Substitute Parts

Part Overview

The LP2980IM5X-3.3 is a linear voltage regulator IC from Texas Instruments, delivering a fixed 3.3V output at 50mA in a SOT-23-5 surface mount package. This device is classified as Last Time Buy, indicating limited availability and the necessity to identify equivalent alternatives for ongoing design requirements and production continuity. The part provides positive fixed output configuration with integrated enable control and comprehensive protection features including over-current, over-temperature, and short-circuit protection.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3.3V
Output Current	50mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.22V @ 50mA
Quiescent Current	95 µA
PSRR	63dB (1kHz)
Operating Temperature Range	-40°C ~ 125°C
Package	SOT-23-5 (SC-74A)
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable

Substitute Part Grouping Explanation

Substitution eligibility for the LP2980IM5X-3.3 is determined by the following critical parameters:

Output voltage: 3.3V fixed
Output current capability: 50mA minimum
Package type: SOT-23-5 surface mount
Input voltage rating: 16V maximum
Operating temperature range: -40°C ~ 125°C
Protection features: Over-current, over-temperature, short-circuit protection
Control features: Enable function

Substitute parts are grouped into two categories:

Direct Equivalents (LP2980 Series): Parts maintaining identical electrical specifications including 0.22V maximum dropout voltage at 50mA and 63dB PSRR at 1kHz. These include LP2980IM5X-3.3/NOPB, LP2980AIM5-3.3, LP2980AIM5-3.3/NOPB, LP2980AIM5X-3.3/NOPB, LP2980IM5-3.3, and LP2980IM5-3.3/NOPB.

Parametric Equivalents (LP2982 Series): Parts meeting core functional requirements with acceptable parameter variations. The LP2982 series maintains 3.3V output, 50mA current, SOT-23-5 package, and full protection features. Variations include 0.33V maximum dropout voltage at 80mA and 45dB PSRR at 1kHz. This series includes LP2982AIM5-3.3/NOPB, LP2982AIM5X-3.3/NOPB, LP2982IM5-3.3/NOPB, and LP2982IM5X-3.3/NOPB.

Parameter Comparison

Part Number	Manufacturer	Product Status	Packaging	Dropout Voltage (Max)	PSRR (1kHz)	Supply Current (Max)	Inventory (Pcs)
LP2980IM5X-3.3	Texas Instruments	Last Time Buy	SOT-23-5	0.22V @ 50mA	63dB	1.2 mA	10400
LP2980IM5X-3.3/NOPB	Texas Instruments	Active	Tape & Reel	0.22V @ 50mA	63dB	1.2 mA	19789
LP2980AIM5-3.3	Texas Instruments	Last Time Buy	Cut Tape & Digi-Reel	0.22V @ 50mA	63dB	1.2 mA	3300
LP2980AIM5-3.3/NOPB	Texas Instruments	Active	Cut Tape & Digi-Reel	0.22V @ 50mA	63dB	1.2 mA	4152
LP2980AIM5X-3.3/NOPB	Texas Instruments	Active	Cut Tape & Digi-Reel	0.22V @ 50mA	63dB	1.2 mA	1352
LP2980IM5-3.3	Texas Instruments	Last Time Buy	Cut Tape & Digi-Reel	0.22V @ 50mA	63dB	1.2 mA	10300
LP2980IM5-3.3/NOPB	Texas Instruments	Active	Cut Tape & Digi-Reel	0.22V @ 50mA	63dB	1.2 mA	16200
LP2982AIM5-3.3/NOPB	Texas Instruments	Active	Cut Tape & Digi-Reel	0.33V @ 80mA	45dB	1.4 mA	1599
LP2982AIM5X-3.3/NOPB	National Semiconductor	Active	Bulk	0.33V @ 80mA	45dB	1.4 mA	8100
LP2982IM5-3.3/NOPB	Texas Instruments	Active	Tape & Reel	0.33V @ 80mA	45dB	1.4 mA	4501
LP2982IM5X-3.3/NOPB	National Semiconductor	Active	Bulk	0.33V @ 80mA	45dB	1.4 mA	9800

Engineering Selection Recommendations

For applications requiring direct electrical equivalence with the LP2980IM5X-3.3, select from the LP2980 series variants. The LP2980IM5X-3.3/NOPB is the recommended primary choice, offering Active product status with the highest inventory availability (19789 pcs) and Tape & Reel packaging suitable for automated assembly. Alternative LP2980 variants maintain identical electrical performance and are suitable where packaging format or inventory constraints differ.

For applications where the slightly relaxed electrical specifications of the LP2982 series are acceptable, these parts provide Active status and extended availability. The LP2982AIM5X-3.3/NOPB and LP2982IM5X-3.3/NOPB offer substantial inventory levels (8100 and 9800 pcs respectively) and represent long-term production alternatives.

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 (Unlimited), and identical operating temperature range (-40°C ~ 125°C). Selection should prioritize Active product status parts to ensure supply continuity beyond Last Time Buy windows.

Frequently Asked Questions (FAQ)

Q: Can LP2980 and LP2982 series parts be used interchangeably?

A: LP2980 and LP2982 parts share identical output voltage (3.3V), output current (50mA), package (SOT-23-5), and protection features. The LP2982 series exhibits higher dropout voltage (0.33V vs 0.22V) and lower PSRR (45dB vs 63dB). Substitution is valid where these parameter differences do not impact circuit performance.

Q: What is the significance of the /NOPB suffix?

A: The /NOPB designation indicates the part is supplied without plumbum (lead-free), meeting RoHS compliance requirements. Parts without this suffix may contain lead and require verification of compliance requirements for your application.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR), Cut Tape (CT), Digi-Reel, and Bulk packaging formats contain identical die and electrical specifications. Packaging selection is determined by assembly process requirements and order quantity.

Q: Are National Semiconductor and Texas Instruments versions functionally equivalent?

A: Yes. The LP2982AIM5X-3.3/NOPB and LP2982IM5X-3.3/NOPB from National Semiconductor maintain identical electrical specifications to their Texas Instruments counterparts. Both manufacturers produce these parts to the same design specifications.

Q: What does Last Time Buy status mean for component selection?

A: Last Time Buy indicates the manufacturer will discontinue production. Parts with this status have limited remaining availability. For long-term production requirements, select Active status alternatives such as LP2980IM5X-3.3/NOPB or LP2982 series variants.

Q: Are all substitute parts RoHS3 compliant?

A: All LP2980 and LP2982 series parts listed are ROHS3 compliant. Verify specific part number compliance documentation for applications requiring formal certification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message