LP2980IM5X-3.0 Equivalent & Substitute Parts

Part Overview

The LP2980IM5X-3.0 is a linear voltage regulator IC from Texas Instruments, delivering positive fixed 3V output at 50mA in a SOT-23-5 surface mount package. This device is classified as "Not For New Designs," indicating it has reached end-of-life status. The part provides micropower regulation with integrated protection features including over-current, over-temperature, and short-circuit protection, making it suitable for legacy systems and maintenance applications where direct replacement is required.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3V
Output Current	50mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.22V @ 50mA
Quiescent Current	95 µA
PSRR	63dB (1kHz)
Package	SOT-23-5 (SC-74A)
Operating Temperature Range	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit

Substitute Part Grouping Explanation

Substitute parts for the LP2980IM5X-3.0 are categorized based on strict electrical and mechanical compatibility:

Parametric Equivalents (Direct Substitutes): Parts maintaining identical output voltage (3V), output current (50mA), input voltage rating (16V), dropout voltage (0.22V @ 50mA), quiescent current (95 µA), PSRR (63dB @ 1kHz), and SOT-23-5 package configuration. These include LP2980AIM5-3.0, LP2980AIM5-3.0/NOPB, LP2980AIM5X-3.0/NOPB, and LP2980IM5-3.0/NOPB.

Functional Equivalents with Parameter Variance: Parts sharing the same output voltage (3V), input voltage rating (16V), SOT-23-5 package, and protection features but with different output current ratings or dropout characteristics. The LP2982 series (LP2982AIM5-3.0/NOPB, LP2982AIM5X-3.0/NOPB, LP2982IM5X-3.0/NOPB) operates at 50mA output but exhibits 0.33V dropout voltage @ 80mA and 45dB PSRR, representing acceptable alternatives for applications with relaxed performance requirements.

Cross-Manufacturer Equivalents: The LD2980ABM30TR from STMicroelectronics provides identical 3V output, 50mA current, 16V input rating, and SOT-23-5 package with 0.225V dropout voltage @ 50mA and 63dB PSRR, offering direct functional replacement with enhanced quiescent current specification (150 µA).

Higher Current Alternative: The LD2981ABM30TR from STMicroelectronics delivers 3V output at 100mA (double the current capacity) in the same SOT-23-5 package, suitable for applications requiring increased output current headroom.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage (Max)	Quiescent Current	PSRR	Package	Product Status	RoHS Status
LP2980IM5X-3.0	Texas Instruments	3V	50mA	16V	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Not For New Designs	RoHS non-compliant
LP2980AIM5-3.0	Texas Instruments	3V	50mA	16V	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Last Time Buy	ROHS3 Compliant
LP2980AIM5-3.0/NOPB	Texas Instruments	3V	50mA	16V	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Active	ROHS3 Compliant
LP2980AIM5X-3.0/NOPB	Texas Instruments	3V	50mA	16V	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Active	ROHS3 Compliant
LP2980IM5-3.0/NOPB	Texas Instruments	3V	50mA	16V	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Active	ROHS3 Compliant
LP2980IM5X-3.0/NOPB	National Semiconductor	3V	50mA	16V	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Active	Not specified
LP2982AIM5-3.0/NOPB	Texas Instruments	3V	50mA	16V	0.33V @ 80mA	95 µA	45dB (1kHz)	SOT-23-5	Obsolete	ROHS3 Compliant
LP2982AIM5X-3.0/NOPB	Texas Instruments	3V	50mA	16V	0.33V @ 80mA	95 µA	45dB (1kHz)	SOT-23-5	Active	ROHS3 Compliant
LP2982IM5X-3.0/NOPB	Texas Instruments	3V	50mA	16V	0.33V @ 80mA	95 µA	45dB (1kHz)	SOT-23-5	Active	ROHS3 Compliant
LD2980ABM30TR	STMicroelectronics	3V	50mA	16V	0.225V @ 50mA	150 µA	63dB (1kHz)	SOT-23-5	Active	ROHS3 Compliant
LD2981ABM30TR	STMicroelectronics	3V	100mA	16V	0.375V @ 100mA	150 µA	63dB (1kHz)	SOT-23-5	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): Select LP2980AIM5-3.0/NOPB, LP2980AIM5X-3.0/NOPB, or LP2980IM5-3.0/NOPB. All three maintain identical electrical specifications (3V output, 50mA, 0.22V dropout, 63dB PSRR) and are currently in Active product status with ROHS3 compliance. LP2980AIM5-3.0/NOPB offers the highest inventory availability (2028 pcs) and is recommended as the primary substitute.

For RoHS3 Compliance Requirement: All Texas Instruments LP2980A and LP2982 variants, along with STMicroelectronics LD2980ABM30TR and LD2981ABM30TR, meet ROHS3 compliance. The original LP2980IM5X-3.0 is RoHS non-compliant and should be replaced with a compliant variant if regulatory requirements apply.

For Cross-Manufacturer Substitution: LD2980ABM30TR from STMicroelectronics provides equivalent 3V/50mA performance with marginally improved dropout voltage (0.225V vs 0.22V) and is ROHS3 compliant. This part is suitable when Texas Instruments variants are unavailable.

For Increased Current Capacity: LD2981ABM30TR delivers 100mA output (double the original 50mA) while maintaining 3V output and SOT-23-5 package. This part is appropriate for applications requiring additional current headroom, though dropout voltage increases to 0.375V @ 100mA.

For Legacy System Maintenance: LP2982AIM5X-3.0/NOPB or LP2982IM5X-3.0/NOPB are acceptable alternatives with relaxed performance specifications (0.33V dropout, 45dB PSRR) and are currently in Active status with high inventory (4100 and 9700 pcs respectively).

Frequently Asked Questions (FAQ)

Q: Can LP2980AIM5-3.0/NOPB directly replace LP2980IM5X-3.0?

A: Yes. Both parts deliver identical electrical performance: 3V fixed output, 50mA current, 0.22V dropout voltage, 63dB PSRR, and operate across -40°C to 125°C. The primary difference is product status (Active vs. Not For New Designs) and RoHS compliance (ROHS3 vs. non-compliant). LP2980AIM5-3.0/NOPB is the recommended substitute.

Q: What is the difference between LP2980 and LP2982 series?

A: Both series provide 3V output at 50mA in SOT-23-5 packages. LP2980 variants specify 0.22V dropout voltage and 63dB PSRR. LP2982 variants specify 0.33V dropout voltage @ 80mA and 45dB PSRR. LP2982 is suitable for applications with relaxed noise and dropout requirements.

Q: Can LD2981ABM30TR replace LP2980IM5X-3.0?

A: LD2981ABM30TR is functionally compatible but not a direct replacement. It delivers 100mA output current (vs. 50mA) and exhibits 0.375V dropout voltage @ 100mA (vs. 0.22V @ 50mA). Use this part only if increased current capacity is required and the higher dropout voltage is acceptable for the application.

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

A: Yes. All listed substitute parts use the SOT-23-5 (SC-74A) package, ensuring mechanical and pin compatibility with the original LP2980IM5X-3.0.

Q: Which substitute offers the best RoHS compliance?

A: All recommended substitutes (LP2980A variants, LP2982 variants, and STMicroelectronics LD2980ABM30TR/LD2981ABM30TR) are ROHS3 compliant. The original LP2980IM5X-3.0 is RoHS non-compliant.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape and Digi-Reel packaging are suitable for manual assembly and small-volume production. Tape & Reel packaging is optimized for automated pick-and-place assembly in high-volume manufacturing. Both formats contain identical components; packaging selection depends on assembly process requirements.

Q: Can I use LP2980IM5X-3.0/NOPB from National Semiconductor instead of Texas Instruments?

A: LP2980IM5X-3.0/NOPB from National Semiconductor maintains identical electrical specifications and SOT-23-5 package. However, National Semiconductor was acquired by Texas Instruments in 2011. Current production is from Texas Instruments. Use this part only if specifically required for legacy system compatibility.

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