LP2992IM5-2.5 Equivalent & Substitute Parts

Part Overview

The LP2992IM5-2.5 is a linear voltage regulator IC from Texas Instruments, delivering a fixed 2.5V output at 250mA in a SOT-23-5 surface mount package. This part is classified as Last Time Buy, indicating discontinued production with limited availability. Finding equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product support for applications requiring this voltage regulation topology.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Output Voltage (Fixed)	2.5V
Output Current	250mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.85V @ 250mA
Quiescent Current	95 µA
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the LP2992IM5-2.5 is determined by the following critical parameters:

Fixed output voltage of 2.5V
Output current capability of 250mA or greater
Maximum input voltage of 16V or greater
SOT-23-5 package compatibility
Operating temperature range of -40°C to 125°C
Enable control feature
Protection against over current, over temperature, and short circuit conditions
RoHS3 compliance

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications) and manufacturer-recommended alternatives (compatible but with different current ratings or quiescent current characteristics).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage	Quiescent Current	Package	Product Status	Inventory
LP2992IM5-2.5	Texas Instruments	2.5V	250mA	16V	0.85V @ 250mA	95 µA	SOT-23-5	Last Time Buy	6100 Pcs
LP2992AIM5-2.5	Texas Instruments	2.5V	250mA	16V	0.85V @ 250mA	95 µA	SOT-23-5	Last Time Buy	2100 Pcs
LP2992AIM5-2.5/NOPB	Texas Instruments	2.5V	250mA	16V	0.85V @ 250mA	95 µA	SOT-23-5	Active	8300 Pcs
LP2992IM5-2.5/NOPB	Texas Instruments	2.5V	250mA	16V	0.85V @ 250mA	95 µA	SOT-23-5	Last Time Buy	1118 Pcs
LP2992IM5X-2.5/NOPB	Texas Instruments	2.5V	250mA	16V	0.85V @ 250mA	95 µA	SOT-23-5	Last Time Buy	3010 Pcs
LD2985BM25R	STMicroelectronics	2.5V	150mA	16V	0.575V @ 150mA	150 µA	SOT-23-5	Active	110400 Pcs
SPX3819M5-L-2-5/TR	MaxLinear, Inc.	2.5V	500mA	16V	0.7V @ 500mA	8 µA	SOT-23-5	Active	26100 Pcs

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitutes):

LP2992AIM5-2.5/NOPB is the preferred direct substitute. It maintains identical electrical specifications to the LP2992IM5-2.5 while offering Active product status and higher inventory availability (8300 units). The /NOPB suffix indicates lead-free, RoHS3 compliant packaging. This part is suitable for direct replacement in new designs and production runs.

LP2992AIM5-2.5, LP2992IM5-2.5/NOPB, and LP2992IM5X-2.5/NOPB are parametric equivalents with identical electrical performance. Selection among these variants depends on packaging format requirements (Cut Tape vs. Digi-Reel) and inventory availability.

Manufacturer-Recommended Alternatives:

LD2985BM25R (STMicroelectronics) is suitable for applications where output current requirements do not exceed 150mA. This part offers Active product status, superior inventory availability (110400 units), and lower dropout voltage (0.575V @ 150mA). Higher quiescent current (150 µA) may impact low-power standby applications.

SPX3819M5-L-2-5/TR (MaxLinear, Inc.) is suitable for applications requiring higher output current (500mA capability). This part offers Active product status, excellent inventory availability (26100 units), and significantly lower quiescent current (8 µA), beneficial for battery-powered applications. Dropout voltage is 0.7V @ 500mA.

All substitute parts maintain SOT-23-5 package compatibility, -40°C to 125°C operating temperature range, and RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can LP2992AIM5-2.5/NOPB be used as a direct replacement for LP2992IM5-2.5?

A: Yes. Both parts deliver identical electrical specifications: 2.5V fixed output, 250mA output current, 0.85V dropout voltage at 250mA, and 95 µA quiescent current. The /NOPB suffix indicates lead-free packaging. Both are housed in SOT-23-5 packages with identical pinouts.

Q: What is the difference between LP2992IM5-2.5 and LP2992AIM5-2.5?

A: Both parts are electrically identical. The difference lies in product status and availability. LP2992AIM5-2.5/NOPB is Active with 8300 units in stock, while LP2992IM5-2.5 is Last Time Buy with 6100 units. For new designs, LP2992AIM5-2.5/NOPB is recommended.

Q: Can LD2985BM25R replace LP2992IM5-2.5 in all applications?

A: LD2985BM25R is suitable only for applications where output current does not exceed 150mA. The LP2992IM5-2.5 is rated for 250mA. If your application requires the full 250mA output current, LD2985BM25R is not appropriate. However, LD2985BM25R offers lower dropout voltage (0.575V vs. 0.85V) and superior availability.

Q: Is SPX3819M5-L-2-5/TR compatible with LP2992IM5-2.5?

A: SPX3819M5-L-2-5/TR is compatible for applications requiring 2.5V output in SOT-23-5 package. It exceeds the current capability (500mA vs. 250mA) and offers lower quiescent current (8 µA vs. 95 µA). Dropout voltage is 0.7V @ 500mA. It is suitable for designs where higher current headroom or lower standby power is beneficial.

Q: What does the /NOPB suffix mean?

A: /NOPB indicates lead-free, RoHS3 compliant packaging. This is the standard for modern electronic components and is compatible with lead-free soldering processes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant or RoHS compliant, meeting environmental and regulatory requirements for electronic components.

Q: Which substitute offers the best inventory availability?

A: LD2985BM25R from STMicroelectronics offers the highest inventory availability at 110400 units. SPX3819M5-L-2-5/TR follows with 26100 units. Both are Active products with reliable long-term supply.

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