LP2992AIM5-2.5 Equivalent & Substitute Parts

Part Overview

The LP2992AIM5-2.5 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 2.5V output at 250mA in SOT-23-5 surface mount packaging. This part is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. Identifying equivalent and substitute parts is necessary to ensure design continuity and supply chain reliability for applications requiring 2.5V regulation with 250mA output capability.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LP2992AIM5-2.5
Output Voltage (Fixed)	2.5V
Output Current	250mA
Input Voltage (Max)	16V
Voltage Dropout (Max)	0.85V @ 250mA
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C to 125°C
Product Status	Last Time Buy
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LP2992AIM5-2.5 are classified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Output voltage: 2.5V fixed
Package type: SOT-23-5 (SC-74A)
Output configuration: Positive
Number of regulators: 1
Control features: Enable function
Protection features: Over Current, Over Temperature, Short Circuit
Operating temperature range: -40°C to 125°C
RoHS compliance: ROHS3 Compliant

Parametric Equivalents (LP2992 series variants from Texas Instruments) maintain identical electrical specifications and differ only in packaging configuration or product status designation.

Manufacturer Recommended Alternatives (LD2985BM25R from STMicroelectronics and SPX3819M5-L-2-5/TR from MaxLinear) provide functional substitution with variations in output current capability and quiescent current characteristics while maintaining the same output voltage, package type, and operating temperature range.

Parameter Comparison

Parameter	LP2992AIM5-2.5	LP2992AIM5-2.5/NOPB	LP2992IM5-2.5	LP2992IM5-2.5/NOPB	LP2992IM5X-2.5/NOPB	LD2985BM25R	SPX3819M5-L-2-5/TR
Manufacturer	TI	TI	TI	TI	TI	STMicroelectronics	MaxLinear
Output Voltage	2.5V	2.5V	2.5V	2.5V	2.5V	2.5V	2.5V
Output Current	250mA	250mA	250mA	250mA	250mA	150mA	500mA
Input Voltage (Max)	16V	16V	16V	16V	16V	16V	16V
Voltage Dropout (Max)	0.85V @ 250mA	0.85V @ 250mA	0.85V @ 250mA	0.85V @ 250mA	0.85V @ 250mA	0.575V @ 150mA	0.7V @ 500mA
Quiescent Current	95 µA	95 µA	95 µA	95 µA	95 µA	150 µA	8 µA
Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Product Status	Last Time Buy	Active	Last Time Buy	Last Time Buy	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred for Pin-Compatible Replacement):

LP2992AIM5-2.5/NOPB is the primary equivalent with Active product status and identical electrical specifications. This part provides the most direct substitution path with full compatibility and ongoing manufacturer support.

LP2992IM5-2.5 and LP2992IM5-2.5/NOPB are parametric equivalents with Last Time Buy status. These parts maintain identical performance characteristics but differ in packaging configuration (Cut Tape vs. Cut Tape & Digi-Reel).

LP2992IM5X-2.5/NOPB is a parametric equivalent with Last Time Buy status, suitable for applications where the specific variant designation is acceptable.

Manufacturer Recommended Alternatives (For Applications with Flexible Current Requirements):

LD2985BM25R from STMicroelectronics is an Active product with identical output voltage and package type. This part is suitable for applications where output current requirement does not exceed 150mA. The lower quiescent current (150 µA vs. 95 µA) and improved dropout voltage (0.575V @ 150mA) may provide advantages in low-power or low-headroom applications.

SPX3819M5-L-2-5/TR from MaxLinear is an Active product with identical output voltage and package type. This part provides higher output current capability (500mA) and significantly lower quiescent current (8 µA), making it suitable for applications requiring higher current delivery or extended battery life. The dropout voltage specification (0.7V @ 500mA) is comparable to the original part at its rated current.

All recommended substitutes maintain ROHS3 or RoHS compliance and operate across the full -40°C to 125°C temperature range.

Frequently Asked Questions (FAQ)

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

A: Yes. LP2992AIM5-2.5/NOPB is a parametric equivalent with identical electrical specifications, output voltage (2.5V), output current (250mA), package type (SOT-23-5), and operating temperature range. The primary difference is product status: LP2992AIM5-2.5/NOPB is Active while the original is Last Time Buy. This part is the recommended direct replacement.

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

A: Both parts are parametric equivalents with identical electrical specifications. The difference lies in packaging configuration: LP2992IM5-2.5 is supplied in Cut Tape only, while LP2992AIM5-2.5 is available in Cut Tape & Digi-Reel. Both are Last Time Buy status.

Q: Can LD2985BM25R replace LP2992AIM5-2.5 in all applications?

A: LD2985BM25R is suitable for applications where the maximum output current requirement does not exceed 150mA. The original LP2992AIM5-2.5 is rated for 250mA. If your application requires the full 250mA output current, LD2985BM25R is not appropriate. Both parts share identical output voltage (2.5V), package type (SOT-23-5), and operating temperature range (-40°C to 125°C).

Q: What are the advantages of SPX3819M5-L-2-5/TR over LP2992AIM5-2.5?

A: SPX3819M5-L-2-5/TR provides higher output current capability (500mA vs. 250mA) and significantly lower quiescent current (8 µA vs. 95 µA). These characteristics make it suitable for applications requiring higher current delivery or where low standby power consumption is critical. Both parts maintain identical output voltage (2.5V), package type (SOT-23-5), and operating temperature range.

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

A: Yes. All listed substitute parts are available in SOT-23-5 (SC-74A) surface mount packaging, ensuring mechanical and electrical compatibility with the original LP2992AIM5-2.5 footprint.

Q: Do all substitute parts meet RoHS compliance requirements?

A: Yes. All substitute parts listed are RoHS compliant. LP2992 series variants and LD2985BM25R are ROHS3 compliant. SPX3819M5-L-2-5/TR is RoHS compliant. All parts are suitable for applications requiring RoHS-compliant components.

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

A: The /NOPB designation indicates "No Plumbum" (lead-free) packaging, confirming RoHS compliance. Parts with this designation are manufactured without lead and meet environmental regulations. Parts without this designation may contain lead and are typically older variants.

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