LP2953IMX/NOPB Equivalent & Substitute Parts

Part Overview

The LP2953IMX/NOPB is a linear voltage regulator IC from Texas Instruments, classified as a positive adjustable (fixed) output power management integrated circuit. This device delivers 250mA output current in a 16-SOIC surface mount package and is actively supported by the manufacturer. The LP2953IMX/NOPB is designed for applications requiring adjustable or fixed positive voltage regulation with integrated protection features. Equivalent substitute parts are identified based on matching electrical specifications, mechanical compatibility, and regulatory compliance to ensure direct functional replacement in circuit designs.

Key Parameters

Parameter	Value
Manufacturer Part Number	LP2953IMX/NOPB
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable (Fixed)
Current - Output	250mA
Voltage - Input (Max)	30V
Voltage - Output (Min/Fixed)	1.23V (5V)
Voltage - Output (Max)	29V
Voltage Dropout (Max)	0.8V @ 250mA
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 125°C
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LP2953IMX/NOPB are identified from the LP2952 series based on the following matching criteria:

Critical Parameters for Substitution:

Output current rating: 250mA
Input voltage range: Maximum 30V
Output voltage configuration: Positive adjustable (fixed)
Package type: 16-SOIC surface mount
Voltage dropout specification: 0.8V @ 250mA
Operating temperature range: -40°C ~ 125°C
Protection features: Over Current, Over Temperature, Reverse Polarity
Control features: Enable function
Regulatory compliance: ROHS3 Compliant

The LP2952 series variants (LP2952IMX/NOPB and LP2952AIMX/NOPB) maintain identical electrical performance specifications and mechanical compatibility with the LP2953IMX/NOPB, enabling direct substitution in circuit applications.

Parameter Comparison

Parameter	LP2953IMX/NOPB	LP2952IMX/NOPB	LP2952AIMX/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable (Fixed)	Adjustable (Fixed)	Adjustable (Fixed)
Current - Output	250mA	250mA	250mA
Voltage - Input (Max)	30V	30V	30V
Voltage - Output (Min/Fixed)	1.23V (5V)	1.23V (5V)	1.23V (5V)
Voltage - Output (Max)	29V	29V	29V
Voltage Dropout (Max)	0.8V @ 250mA	0.8V @ 250mA	0.8V @ 250mA
Current - Quiescent (Iq)	170 µA	170 µA	170 µA
Current - Supply (Max)	33 mA	33 mA	33 mA
Control Features	Enable	Enable	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All three parts—LP2953IMX/NOPB, LP2952IMX/NOPB, and LP2952AIMX/NOPB—are actively supported by Texas Instruments and carry identical electrical and mechanical specifications. Selection among these parts is based on availability and inventory status:

LP2953IMX/NOPB: 2961 pieces in stock
LP2952IMX/NOPB: 4156 pieces in stock
LP2952AIMX/NOPB: 5300 pieces in stock

All parts meet ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity classification. No technical differentiation exists between these devices; they are functionally and mechanically interchangeable for 250mA positive adjustable (fixed) voltage regulation applications operating within -40°C to 125°C temperature ranges and accepting input voltages up to 30V.

Frequently Asked Questions (FAQ)

Q: Can LP2952IMX/NOPB and LP2952AIMX/NOPB be used interchangeably with LP2953IMX/NOPB?

A: Yes. All three parts share identical electrical specifications, output current ratings (250mA), voltage ranges (input max 30V, output 1.23V to 29V), dropout voltage (0.8V @ 250mA), protection features, and 16-SOIC package dimensions. Direct substitution is supported without circuit modification.

Q: Are there any differences in temperature operating range between these parts?

A: No. All three parts operate across the same temperature range: -40°C to 125°C.

Q: Do all substitute parts have the same package footprint?

A: Yes. LP2953IMX/NOPB, LP2952IMX/NOPB, and LP2952AIMX/NOPB all use 16-SOIC (0.154", 3.90mm Width) surface mount packaging with identical pin configurations and PCB footprints.

Q: Are regulatory certifications identical across all three parts?

A: Yes. All parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity classification.

Q: What protection features are included in these regulators?

A: All three parts include over current protection, over temperature protection, and reverse polarity protection.

Q: Can these parts be used in applications requiring adjustable output voltage?

A: Yes. All three parts support adjustable (fixed) output configuration, allowing output voltage adjustment through external resistor networks or fixed voltage selection based on application requirements.

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