LP2992IM5-3.0 Equivalent & Substitute Parts

Part Overview

The LP2992IM5-3.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V output at 250mA in SOT-23-5 surface mount packaging. This device is classified as "Not For New Designs," indicating it has been superseded in the product lifecycle. Finding equivalent and substitute parts is necessary for ongoing production support, legacy system maintenance, and design flexibility when the primary part becomes unavailable or when alternative performance characteristics better suit specific application requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LP2992IM5-3.0
Category	Power Management (PMIC)
Output Voltage	3V Fixed
Output Current	250mA
Package Type	SOT-23-5 (SC-74A)
Input Voltage (Max)	16V
Dropout Voltage	0.85V @ 250mA
Quiescent Current	95 µA
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Product Status	Not For New Designs
RoHS Status	RoHS Non-Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LP2992IM5-3.0 is determined by the following critical parameters:

Fixed Substitution Criteria:

Output voltage: 3V fixed
Package type: SOT-23-5 (SC-74A)
Mounting type: Surface mount
Output configuration: Positive
Number of regulators: 1
Control features: Enable function

Flexible Substitution Criteria (within acceptable ranges):

Output current: 250mA or higher
Input voltage maximum: 16V or higher
Dropout voltage: Lower values preferred but not mandatory
Quiescent current: Lower values preferred but not mandatory
Operating temperature range: Must include -40°C to 125°C or compatible subset
Protection features: Must include at minimum Over Current and Over Temperature

Substitute parts are grouped based on whether they meet all fixed criteria while maintaining functional compatibility within the flexible parameters.

Parameter Comparison

Parameter	LP2992IM5-3.0	LP2992IM5-3.0/NOPB	AP2210K-3.0TRG1	LD2985BM30R	SPX3819M5-L-3-0/TR	SPX5205M5-L-3-0/TR
Manufacturer	Texas Instruments	Texas Instruments	Diodes Incorporated	STMicroelectronics	MaxLinear, Inc.	MaxLinear, Inc.
Output Voltage	3V	3V	3V	3V	3V	3V
Output Current	250mA	250mA	300mA	150mA	500mA	150mA
Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5
Input Voltage (Max)	16V	16V	13.2V	16V	16V	16V
Dropout Voltage	0.85V @ 250mA	0.85V @ 250mA	0.5V @ 300mA	0.575V @ 150mA	0.7V @ 500mA	0.35V @ 150mA
Quiescent Current	95 µA	95 µA	180 µA	150 µA	8 µA	5 µA
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 85°C
Protection Features	OCP, OTP, SCP	OCP, OTP, SCP	OCP, OTP, RP	OCP, OTP	OCP, OTP, RP	OCP, OTP, RP
Product Status	Not For New Designs	Active	Active	Active	Active	Active
RoHS Status	Non-Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

Direct Parametric Equivalent: LP2992IM5-3.0/NOPB is the direct equivalent of LP2992IM5-3.0, differing only in packaging format (Tape & Reel versus standard packaging) and RoHS compliance status. This part maintains identical electrical specifications and is classified as Active, making it the primary choice for direct replacement in new procurement.

Higher Current Capacity Substitute: SPX3819M5-L-3-0/TR provides 500mA output current compared to the original 250mA, with superior quiescent current performance (8 µA versus 95 µA). This part is suitable for applications requiring higher current delivery or lower standby power consumption. Input voltage rating remains at 16V maximum.

Lower Current Substitute: LD2985BM30R and SPX5205M5-L-3-0/TR both provide 150mA output current. LD2985BM30R maintains the full -40°C to 125°C temperature range, while SPX5205M5-L-3-0/TR operates to 85°C maximum. SPX5205M5-L-3-0/TR offers superior dropout voltage (0.35V) and quiescent current (5 µA) characteristics.

Alternative Manufacturer Option: AP2210K-3.0TRG1 from Diodes Incorporated provides 300mA output current with improved dropout voltage (0.5V) but operates at a reduced maximum input voltage of 13.2V. This part is suitable only for applications where input voltage does not exceed 13.2V.

Compliance Consideration: All substitute parts listed are RoHS compliant or ROHS3 compliant, whereas the original LP2992IM5-3.0 is RoHS non-compliant. Selection of compliant alternatives is recommended for new designs and applications subject to environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can LP2992IM5-3.0/NOPB be used as a direct drop-in replacement for LP2992IM5-3.0? A: Yes. LP2992IM5-3.0/NOPB is electrically and mechanically identical to LP2992IM5-3.0. The difference is packaging format and RoHS compliance status. Both parts are pin-compatible and have identical electrical performance.

Q: What is the key difference between the substitute parts listed? A: The primary differentiator is output current capacity. SPX3819M5-L-3-0/TR provides 500mA, AP2210K-3.0TRG1 provides 300mA, the original provides 250mA, and both LD2985BM30R and SPX5205M5-L-3-0/TR provide 150mA. Selection depends on application current requirements.

Q: Can I use a lower current rated part as a substitute? A: Only if your application current requirement does not exceed the substitute part's rated output current. Using a part rated below your application requirement will result in voltage regulation failure or thermal shutdown.

Q: Are all substitute parts available in the same SOT-23-5 package? A: Yes. All parts listed use SOT-23-5 (SC-74A) surface mount packaging, ensuring mechanical and pin compatibility.

Q: What is the significance of the operating temperature range difference in SPX5205M5-L-3-0/TR? A: SPX5205M5-L-3-0/TR operates to 85°C maximum, compared to 125°C for other parts. This part is unsuitable for applications requiring the full -40°C to 125°C temperature range.

Q: Why does AP2210K-3.0TRG1 have a lower maximum input voltage? A: AP2210K-3.0TRG1 is rated for 13.2V maximum input, compared to 16V for other parts. This part cannot be used in applications where input voltage may exceed 13.2V.

Q: What does "Not For New Designs" mean for the original LP2992IM5-3.0? A: This designation indicates the part has been superseded in the manufacturer's product lifecycle. While existing inventory may be available, Texas Instruments recommends using LP2992IM5-3.0/NOPB or other active alternatives for new designs.

Q: How do quiescent current differences affect my application? A: Quiescent current represents standby power consumption. SPX3819M5-L-3-0/TR (8 µA) and SPX5205M5-L-3-0/TR (5 µA) consume significantly less standby power than the original (95 µA), making them preferable for battery-powered or low-power applications.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed are either RoHS Compliant or ROHS3 Compliant, whereas the original LP2992IM5-3.0 is RoHS non-compliant. This is relevant for applications subject to environmental or regulatory requirements.

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