LP3852ESX-5.0 Equivalent & Substitute Parts

Part Overview

The LP3852ESX-5.0 is a linear voltage regulator IC from Texas Instruments, delivering a fixed 5V output at 1.5A in a TO-263 (DDPAK-5) surface mount package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The device provides positive fixed output regulation 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)	5V
Output Current	1.5A
Input Voltage (Max)	7V
Voltage Dropout (Max)	0.38V @ 1.5A
Quiescent Current	3 mA
Package	TO-263 (DDPAK-5)
Mounting Type	Surface Mount
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit

Substitute Part Grouping Explanation

Substitution eligibility for the LP3852ESX-5.0 is determined by the following critical parameters:

Output Voltage: Must be fixed at 5V
Output Current: Must be rated for 1.5A minimum
Package Type: Must be TO-263 (DDPAK-5) surface mount
Output Configuration: Must be positive fixed output
Operating Temperature Range: Must support -40°C to 125°C
Protection Features: Must include over-current, over-temperature, and short-circuit protection

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications) and manufacturer-recommended alternatives (functionally compatible with minor parameter variations).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage @ 1.5A	Quiescent Current	Package	Product Status	RoHS Compliance
LP3852ESX-5.0	Texas Instruments	5V	1.5A	7V	0.38V	3 mA	TO-263 (DDPAK-5)	Obsolete	Non-compliant
LP3852ESX-5.0/NOPB	Texas Instruments	5V	1.5A	7V	0.38V	3 mA	TO-263 (DDPAK-5)	Active	ROHS3 Compliant
LP3855ESX-5.0/NOPB	Texas Instruments	5V	1.5A	7V	0.38V	3 mA	TO-263 (DDPAK-5)	Active	ROHS3 Compliant
LP3872ESX-5.0/NOPB	National Semiconductor	5V	1.5A	7V	0.55V	5 mA	TO-263 (DDPAK-5)	Active	Not specified
LP3962ESX-5.0/NOPB	Texas Instruments	5V	1.5A	7V	0.55V	9 mA	TO-263 (DDPAK-5)	Active	ROHS3 Compliant
MIC29151-5.0WU	Microchip Technology	5V	1.5A	26V	0.6V	Not specified	TO-263 (DDPAK-5)	Active	ROHS3 Compliant
MIC29151-5.0WU-TR	Microchip Technology	5V	1.5A	26V	0.6V	Not specified	TO-263 (DDPAK-5)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1 - Direct Parametric Equivalents:

LP3852ESX-5.0/NOPB and LP3855ESX-5.0/NOPB are direct parametric equivalents with identical electrical specifications to the original LP3852ESX-5.0. Both are active products with ROHS3 compliance, making them the preferred substitutes for new designs and production continuity.

Tier 2 - Functional Equivalents with Minor Variations:

LP3872ESX-5.0/NOPB and LP3962ESX-5.0/NOPB maintain the same output voltage, current rating, and package configuration. These parts exhibit higher dropout voltage (0.55V) and increased quiescent current compared to the original specification. Both are active products suitable for applications where these parameter variations are acceptable.

Tier 3 - Alternative Manufacturer Solution:

MIC29151-5.0WU and MIC29151-5.0WU-TR from Microchip Technology provide the same output voltage and current rating in the identical TO-263 package. These parts support a higher maximum input voltage (26V) and include additional protection features (reverse polarity and transient voltage protection). Both are active products with ROHS3 compliance. The primary difference is packaging format: MIC29151-5.0WU is supplied in tube packaging, while MIC29151-5.0WU-TR is supplied in cut tape and digi-reel format.

Frequently Asked Questions (FAQ)

Q: Can LP3852ESX-5.0/NOPB be used as a direct replacement for LP3852ESX-5.0?

A: Yes. LP3852ESX-5.0/NOPB is a parametric equivalent with identical electrical specifications. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 compliant vs. non-compliant). This is the recommended substitute for design continuity.

Q: What is the difference between LP3852ESX-5.0/NOPB and LP3855ESX-5.0/NOPB?

A: Both parts are parametric equivalents with identical electrical specifications and package configuration. The difference lies in the base product number (LP3852 vs. LP3855). Both are active, ROHS3-compliant alternatives suitable for the same applications.

Q: Can I use LP3872ESX-5.0/NOPB or LP3962ESX-5.0/NOPB as substitutes?

A: These parts are functionally compatible but exhibit higher dropout voltage (0.55V vs. 0.38V) and increased quiescent current. They are suitable substitutes only if your application can tolerate these parameter variations. Both maintain the same 5V output, 1.5A current rating, and TO-263 package.

Q: What are the advantages of using MIC29151-5.0WU or MIC29151-5.0WU-TR?

A: Microchip's MIC29151 series supports a higher maximum input voltage (26V vs. 7V) and includes additional protection features such as reverse polarity and transient voltage protection. These parts are suitable for applications requiring extended input voltage range or enhanced protection. The choice between MIC29151-5.0WU (tube) and MIC29151-5.0WU-TR (tape & reel) depends on packaging and handling requirements.

Q: Are all substitute parts available in the same TO-263 package?

A: Yes. All substitute parts listed are supplied in the TO-263 (DDPAK-5) surface mount package, ensuring mechanical and electrical compatibility with the original LP3852ESX-5.0 footprint.

Q: Which substitute offers the best RoHS compliance status?

A: LP3852ESX-5.0/NOPB, LP3855ESX-5.0/NOPB, LP3962ESX-5.0/NOPB, MIC29151-5.0WU, and MIC29151-5.0WU-TR are all ROHS3 compliant. The original LP3852ESX-5.0 is RoHS non-compliant.

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