LP3852ET-5.0 Equivalent & Substitute Parts

Part Overview

The LP3852ET-5.0 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed positive 5V output at 1.5A in a TO-220-5 package with through-hole mounting. The device includes integrated protection features for over-current, over-temperature, and short-circuit conditions, along with an enable control feature.

The LP3852ET-5.0 is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Output Voltage (Fixed)	5V
Output Current	1.5A
Input Voltage (Max)	7V
Voltage Dropout (Max)	0.38V @ 1.5A
Package / Case	TO-220-5 Formed Leads
Mounting Type	Through Hole
Operating Temperature Range	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable

Substitute Part Grouping Explanation

Substitute parts for the LP3852ET-5.0 are identified based on strict electrical and mechanical parameter matching:

Critical Parameters for Substitution:

Output voltage: 5V fixed
Output current capability: 1.5A
Input voltage maximum: 7V
Voltage dropout: 0.38V @ 1.5A
Package type: TO-220-5 Formed Leads
Mounting: Through Hole
Protection features: Over Current, Over Temperature, Short Circuit
Control features: Enable function

The substitute parts listed maintain identical electrical specifications and mechanical compatibility, ensuring direct functional replacement in existing circuit designs.

Parameter Comparison

Parameter	LP3852ET-5.0	LP3852ET-5.0/NOPB	LP3855ET-5.0/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active
Output Voltage	5V	5V	5V
Output Current	1.5A	1.5A	1.5A
Input Voltage (Max)	7V	7V	7V
Voltage Dropout (Max)	0.38V @ 1.5A	0.38V @ 1.5A	0.38V @ 1.5A
Quiescent Current (Iq)	3 mA	3 mA	3 mA
PSRR	73dB ~ 57dB (120Hz)	73dB ~ 57dB (120Hz)	73dB ~ 57dB (120Hz)
Package / Case	TO-220-5 Formed Leads	TO-220-5 Formed Leads	TO-220-5 Formed Leads
Mounting Type	Through Hole	Through Hole	Through Hole
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit
Control Features	Enable	Enable	Enable
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Bulk	Tube	Tube

Engineering Selection Recommendations

LP3852ET-5.0/NOPB is the direct manufacturer equivalent with identical electrical and mechanical specifications. This part is currently in active production status and carries ROHS3 compliance certification, addressing regulatory requirements that the original obsolete part does not meet. The /NOPB suffix indicates lead-free plating, aligning with modern manufacturing standards.

LP3855ET-5.0/NOPB is a parametric equivalent offering identical electrical performance and mechanical compatibility. This part is also in active production with ROHS3 compliance. The LP3855 base product number represents a variant within the same regulator family, maintaining all critical functional parameters required for direct substitution.

Both substitute parts are available in tube packaging and carry REACH Unaffected status. Selection between LP3852ET-5.0/NOPB and LP3855ET-5.0/NOPB depends on component availability and supply chain preferences, as both deliver equivalent performance in the target application.

Frequently Asked Questions (FAQ)

Q: Can LP3852ET-5.0/NOPB directly replace the obsolete LP3852ET-5.0?

A: Yes. The LP3852ET-5.0/NOPB maintains identical electrical specifications, output voltage, current rating, dropout voltage, and protection features. The mechanical compatibility is preserved through the same TO-220-5 package with formed leads and through-hole mounting. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between LP3852ET-5.0/NOPB and LP3855ET-5.0/NOPB?

A: Both parts deliver identical electrical performance: 5V fixed output, 1.5A current capability, 0.38V dropout at rated current, and equivalent protection features. The difference lies in the base product number (LP3852 vs. LP3855), which represents variants within the Texas Instruments regulator family. Both are suitable for direct substitution based on parametric equivalence.

Q: Are the substitute parts compatible with existing PCB designs?

A: Yes. Both LP3852ET-5.0/NOPB and LP3855ET-5.0/NOPB use the TO-220-5 package with formed leads and through-hole mounting, matching the original part's mechanical footprint. No PCB redesign is required for component substitution.

Q: What does the /NOPB suffix indicate?

A: The /NOPB suffix designates lead-free plating on the component leads, complying with RoHS directives and modern soldering standards. This is a manufacturing specification that does not affect electrical performance or functional compatibility.

Q: Are both substitute parts currently available?

A: Both LP3852ET-5.0/NOPB and LP3855ET-5.0/NOPB are listed as active products with inventory availability. Specific stock levels and lead times should be verified with the component supplier.

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