LP2992IM5-3.0/NOPB Equivalent & Substitute Parts

Part Overview

The LP2992IM5-3.0/NOPB is a linear voltage regulator IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed positive 3V output at 250mA maximum current in a surface-mount SOT-23-5 package. The part is currently active in production with 1550 units in stock.

Equivalent and substitute parts are identified based on matching electrical specifications including output voltage, current capacity, input voltage range, dropout voltage, and package configuration. Alternative components may be required due to supply constraints, design optimization, or application-specific performance requirements.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LP2992IM5-3.0/NOPB	—
Manufacturer	Texas Instruments	—
Output Voltage (Fixed)	3V	V
Output Current	250mA	mA
Input Voltage (Max)	16V	V
Dropout Voltage	0.85V @ 250mA	V
Quiescent Current	95 µA	µA
PSRR	45dB (1kHz)	dB
Package	SOT-23-5 (SC-74A)	—
Operating Temperature	-40°C to 125°C	°C
Protection Features	Over Current, Over Temperature, Short Circuit	—
Part Status	Active	—

Substitute Part Grouping Explanation

Substitute parts are grouped based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Output voltage: 3V fixed
Package type: SOT-23-5 (SC-74A)
Output configuration: Positive, fixed single output
Surface-mount technology
Operating temperature range: -40°C to 125°C
Control features: Enable function
Protection: Over current and over temperature protection

Secondary Compatibility Factors:

Output current capacity (250mA nominal, with tolerance for lower-current alternatives in current-limited applications)
Input voltage maximum (16V or higher)
Dropout voltage performance
Quiescent current characteristics
PSRR performance at 1kHz

Substitutes are classified into two categories: direct equivalents (matching 250mA output current) and functional alternatives (lower current ratings suitable for reduced-load applications).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage	Quiescent Current	PSRR (1kHz)	Package	Status
LP2992IM5-3.0/NOPB	Texas Instruments	3V	250mA	16V	0.85V @ 250mA	95 µA	45dB	SOT-23-5	Active
TPS7A2430DBVR	Texas Instruments	3V	200mA	18V	0.25V @ 200mA	4.5 µA	75dB ~ 62dB	SOT-23-5	Active
LP2985-30DBVR	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	45dB	SOT-23-5	Active
LP2985-30DBVT	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	45dB	SOT-23-5	Last Time Buy
LP2985A-30DBVR	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	45dB	SOT-23-5	Active
LP2985A-30DBVT	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95 µA	45dB	SOT-23-5	Active
REG102NA-3/250	Texas Instruments	3V	250mA	10V	0.27V @ 250mA	500 µA	65dB	SOT-23-5	Last Time Buy
REG102NA-3/3K	Texas Instruments	3V	250mA	10V	0.27V @ 250mA	500 µA	65dB	SOT-23-5	Last Time Buy
AP2210K-3.0TRG1	Diodes Incorporated	3V	300mA	13.2V	0.5V @ 300mA	180 µA	75dB	SOT-23-5	Active
LD2985BM30R	STMicroelectronics	3V	150mA	16V	0.575V @ 150mA	150 µA	45dB	SOT-23-5	Active
LDS3985M30R	STMicroelectronics	3V	300mA	6V	0.25V @ 300mA	150 µA	55dB ~ 50dB	SOT-23-5	Active

Engineering Selection Recommendations

Direct Equivalents (250mA Output Current):

REG102NA-3/250 and REG102NA-3/3K are direct current-rated equivalents to the LP2992IM5-3.0/NOPB. Both parts deliver 250mA output current at 3V with identical SOT-23-5 packaging. However, both parts carry Last Time Buy status, indicating discontinued production. The REG102 series exhibits lower dropout voltage (0.27V) but higher quiescent current (500 µA) and reduced maximum input voltage (10V versus 16V). These parts are suitable for applications with input voltages below 10V where lower dropout performance is beneficial.

Higher Current Alternatives (300mA Output Current):

AP2210K-3.0TRG1 (Diodes Incorporated) and LDS3985M30R (STMicroelectronics) provide 300mA output current capacity, exceeding the LP2992 specification. Both maintain 3V output voltage and SOT-23-5 packaging. AP2210K-3.0TRG1 is active production with 13.2V maximum input voltage and includes reverse polarity protection. LDS3985M30R operates with 6V maximum input voltage and features shutdown control. These parts are applicable for designs requiring higher current headroom or enhanced protection features.

Lower Current Alternatives (150mA Output Current):

LP2985-30DBVR, LP2985-30DBVT, LP2985A-30DBVR, LP2985A-30DBVT, and LD2985BM30R all deliver 150mA output current. LP2985 variants (Texas Instruments) are active or Last Time Buy status with 16V input maximum. LP2985A variants represent an alternative revision. LD2985BM30R (STMicroelectronics) is active production with identical 16V input maximum. These parts are suitable for applications with current requirements below 150mA.

Enhanced Performance Alternative:

TPS7A2430DBVR (Texas Instruments) delivers 200mA output current with superior performance characteristics: 0.25V dropout voltage (versus 0.85V), 4.5 µA quiescent current (versus 95 µA), and 75dB PSRR at 10Hz. Maximum input voltage is 18V. This part is active production and suitable for low-power, low-noise applications where the 200mA current capacity is sufficient.

Compliance and Certification:

All listed substitute parts are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is 1 (unlimited) for all parts except AP2210K-3.0TRG1 (MSL 3, 168 hours). All parts operate across -40°C to 125°C temperature range except REG102 series (-40°C to 85°C).

Frequently Asked Questions (FAQ)

Q: Can LP2985-30DBVR replace LP2992IM5-3.0/NOPB in all applications?

A: LP2985-30DBVR is functionally compatible for applications requiring 150mA or less output current. The 3V output voltage, SOT-23-5 package, and protection features are identical. However, the maximum output current is reduced from 250mA to 150mA. Applications designed for 250mA operation require verification that actual current draw does not exceed 150mA.

Q: What is the difference between LP2985-30DBVT and LP2985-30DBVR?

A: Both parts are electrically identical with 150mA output current, 3V output voltage, and SOT-23-5 packaging. The difference is packaging format: DBVT indicates Cut Tape (CT) packaging, while DBVR indicates Cut Tape (CT) & Digi-Reel® packaging. LP2985-30DBVT carries Last Time Buy status; LP2985-30DBVR is active production.

Q: Is TPS7A2430DBVR a suitable replacement for higher-noise applications?

A: TPS7A2430DBVR provides superior PSRR performance (75dB at 10Hz, 62dB at 1kHz) compared to LP2992IM5-3.0/NOPB (45dB at 1kHz). The lower quiescent current (4.5 µA versus 95 µA) and lower dropout voltage (0.25V versus 0.85V) make this part suitable for noise-sensitive applications. Output current is limited to 200mA.

Q: Can AP2210K-3.0TRG1 be used in place of LP2992IM5-3.0/NOPB?

A: AP2210K-3.0TRG1 is compatible for applications where 300mA output current capacity is acceptable. The 3V output voltage and SOT-23-5 package match the LP2992. However, maximum input voltage is 13.2V (versus 16V), and the part includes reverse polarity protection not present in the LP2992. Verify input voltage does not exceed 13.2V.

Q: What is the significance of Last Time Buy status for REG102NA-3/250?

A: Last Time Buy status indicates the manufacturer has discontinued production. REG102NA-3/250 remains available in inventory (2141 units) but will not be replenished. This part is suitable for immediate requirements but not recommended for long-term production designs. Active alternatives include TPS7A2430DBVR or AP2210K-3.0TRG1.

Q: How does LDS3985M30R differ from other 300mA alternatives?

A: LDS3985M30R features shutdown control (versus enable control on other parts) and operates with maximum input voltage of 6V (versus 13.2V for AP2210K-3.0TRG1). The 0.25V dropout voltage is superior to most alternatives. This part is suitable for low-voltage input applications (below 6V) requiring shutdown capability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is 1 (unlimited) for all parts except AP2210K-3.0TRG1, which has MSL 3 (168 hours). Verify moisture handling procedures for AP2210K-3.0TRG1 if required by manufacturing processes.

Q: What packaging options are available for LP2985 variants?

A: LP2985-30DBVR is supplied in Cut Tape (CT) & Digi-Reel® packaging (active production). LP2985-30DBVT is supplied in Cut Tape (CT) only (Last Time Buy status). LP2985A-30DBVR is supplied in Cut Tape (CT) & Digi-Reel® packaging (active production). LP2985A-30DBVT is supplied in Tape & Reel (TR) packaging (active production). Select packaging based on assembly requirements and inventory management.

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