LP2992AIM5-3.3 Equivalent & Substitute Parts

Part Overview

The LP2992AIM5-3.3 is a linear voltage regulator IC from Texas Instruments designed to deliver a fixed 3.3V output at 250mA in a SOT-23-5 surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The device provides positive fixed output configuration with integrated protection features including over-current, over-temperature, and short-circuit protection, operating across the industrial temperature range of -40°C to 125°C.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3.3V
Output Current	250mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.85V @ 250mA
Quiescent Current	95 µA
Package Type	SOT-23-5 (SC-74A)
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit

Substitute Part Grouping Explanation

Substitute parts for the LP2992AIM5-3.3 are categorized based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Output voltage: 3.3V fixed
Package type: SOT-23-5 surface mount
Output configuration: Positive fixed
Operating temperature range: -40°C to 125°C minimum
Protection features: Over-current and over-temperature protection

Substitution Categories:

Direct Equivalents maintain identical electrical specifications (250mA output current, 0.85V dropout, 95µA quiescent current) with improved product status from obsolete to active.

Parametric Equivalents provide the same 250mA output current and core electrical characteristics but may differ in packaging format (Cut Tape vs. Tape & Reel).

Manufacturer Recommended Alternatives offer different output current ratings (150mA, 200mA, 300mA, 500mA) or improved electrical performance (lower dropout voltage, reduced quiescent current) while maintaining 3.3V output and SOT-23-5 packaging. These are suitable when application current requirements differ from the original 250mA specification.

Parameter Comparison

Part Number	Manufacturer	Output Current	Dropout Voltage	Quiescent Current	Input Voltage (Max)	Product Status	RoHS Status
LP2992AIM5-3.3	Texas Instruments	250mA	0.85V @ 250mA	95 µA	16V	Obsolete	Non-compliant
LP2992AIM5-3.3/NOPB	Texas Instruments	250mA	0.85V @ 250mA	95 µA	16V	Active	ROHS3 Compliant
LP2992AIM5X-3.3/NOPB	Texas Instruments	250mA	0.85V @ 250mA	95 µA	16V	Active	ROHS3 Compliant
LP2992IM5-3.3/NOPB	Texas Instruments	250mA	0.85V @ 250mA	95 µA	16V	Active	ROHS3 Compliant
LP2992IM5X-3.3/NOPB	Texas Instruments	250mA	0.85V @ 250mA	95 µA	16V	Active	ROHS3 Compliant
TPS7A2433DBVR	Texas Instruments	200mA	0.25V @ 200mA	4.5 µA	18V	Active	ROHS3 Compliant
AP2210K-3.3TRE1	Diodes Incorporated	300mA	0.5V @ 300mA	180 µA	13.2V	Active	ROHS3 Compliant
AP2210K-3.3TRG1	Diodes Incorporated	300mA	0.5V @ 300mA	180 µA	13.2V	Active	ROHS3 Compliant
LD2985BM33R	STMicroelectronics	150mA	0.575V @ 150mA	150 µA	16V	Active	ROHS3 Compliant
SPX3819M5-L-3-3/TR	MaxLinear, Inc.	500mA	0.7V @ 500mA	8 µA	16V	Active	ROHS3 Compliant
SPX5205M5-L-3-3/TR	MaxLinear, Inc.	150mA	0.35V @ 150mA	5 µA	16V	Active	RoHS Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): LP2992AIM5-3.3/NOPB, LP2992AIM5X-3.3/NOPB, LP2992IM5-3.3/NOPB, and LP2992IM5X-3.3/NOPB are functionally equivalent to the obsolete LP2992AIM5-3.3. All are active products with ROHS3 compliance. Selection between these variants depends on packaging format requirements: Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR).

For Applications Requiring Higher Output Current: SPX3819M5-L-3-3/TR (500mA) provides double the output current capacity while maintaining the same 3.3V output, 16V maximum input, and SOT-23-5 package. This part offers superior quiescent current performance (8 µA vs. 95 µA).

For Applications Requiring Lower Output Current: LD2985BM33R (150mA) or SPX5205M5-L-3-3/TR (150mA) are suitable for designs with reduced current requirements. SPX5205M5-L-3-3/TR provides significantly lower dropout voltage (0.35V vs. 0.575V) and quiescent current (5 µA).

For Improved Performance Characteristics: TPS7A2433DBVR offers substantially lower dropout voltage (0.25V vs. 0.85V) and quiescent current (4.5 µA vs. 95 µA) with 200mA output capacity and 18V maximum input rating. This part is suitable for applications where power efficiency and thermal performance are critical, provided the 200mA output current meets application requirements.

For Higher Current with Enhanced Features: AP2210K-3.3TRE1 and AP2210K-3.3TRG1 (both 300mA) provide increased output current with lower dropout voltage (0.5V) compared to the original part. These Diodes Incorporated parts include reverse polarity protection. Selection between TRE1 and TRG1 variants depends on packaging format and moisture sensitivity level requirements (MSL 1 vs. MSL 3).

All recommended substitutes maintain the SOT-23-5 package format, positive fixed output configuration, and -40°C to 125°C operating temperature range. All active alternatives are ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can LP2992AIM5-3.3/NOPB be used as a direct replacement for LP2992AIM5-3.3?

A: Yes. LP2992AIM5-3.3/NOPB is electrically and mechanically identical to the obsolete LP2992AIM5-3.3, with identical output current (250mA), dropout voltage (0.85V @ 250mA), quiescent current (95 µA), and package type (SOT-23-5). The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between LP2992AIM5X-3.3/NOPB and LP2992IM5X-3.3/NOPB?

A: Both parts are parametrically equivalent with identical electrical specifications. The difference lies in packaging format: LP2992AIM5X-3.3/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format, while LP2992IM5X-3.3/NOPB is supplied in Tape & Reel (TR) format. Selection depends on production equipment and volume requirements.

Q: Can I use TPS7A2433DBVR as a substitute if my application only requires 200mA output?

A: Yes, provided your application current requirement does not exceed 200mA. TPS7A2433DBVR offers superior performance with lower dropout voltage (0.25V vs. 0.85V) and significantly reduced quiescent current (4.5 µA vs. 95 µA). The 18V maximum input voltage rating also provides additional design margin compared to the original 16V specification.

Q: What are the key differences between the Diodes Incorporated AP2210K variants and the Texas Instruments LP2992 series?

A: AP2210K-3.3TRE1 and AP2210K-3.3TRG1 provide 300mA output current (vs. 250mA), lower dropout voltage (0.5V vs. 0.85V), and reverse polarity protection. The maximum input voltage is 13.2V (vs. 16V). These parts are suitable for applications requiring higher current capacity. The TRE1 variant has MSL 1 (unlimited moisture sensitivity), while TRG1 has MSL 3 (168 hours).

Q: Which substitute offers the best power efficiency?

A: SPX3819M5-L-3-3/TR and SPX5205M5-L-3-3/TR from MaxLinear offer the lowest quiescent current specifications (8 µA and 5 µA respectively). SPX5205M5-L-3-3/TR additionally provides the lowest dropout voltage (0.35V @ 150mA), making it optimal for battery-powered or low-power applications where efficiency is critical.

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

A: Yes. All substitute parts listed are supplied in SOT-23-5 (SC-74A) surface mount package format, ensuring mechanical compatibility with the original LP2992AIM5-3.3 PCB layout and assembly process.

Q: What should I consider when selecting between different output current ratings?

A: Select a substitute with output current rating equal to or greater than your application's maximum required current. Using a part with lower current rating than required may result in voltage regulation failure or thermal shutdown. Using a part with higher current rating than required is acceptable and may improve thermal performance and voltage stability.

Q: Are all active substitutes RoHS compliant?

A: All active substitute parts listed are RoHS compliant. The original LP2992AIM5-3.3 is marked as RoHS non-compliant. SPX5205M5-L-3-3/TR is RoHS compliant; all others are ROHS3 compliant.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message