LP3852ES-5.0 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP3852ES-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output at 1.5A in a TO-263 (DDPAK-5) surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The device provides regulated 5V output with integrated protection features including over-current, over-temperature, and short-circuit protection, suitable for applications requiring stable low-voltage power delivery in compact form factors.

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 Type	TO-263 (DDPAK-5)
Operating Temperature Range	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable

Substitute Part Grouping Explanation

Substitute parts for the LP3852ES-5.0 are categorized based on strict electrical and mechanical parameter alignment:

Direct Manufacturer Equivalent: LP3852ES-5.0/NOPB shares identical electrical specifications with the main part, including 0.38V dropout voltage at 1.5A and 3 mA quiescent current. The primary distinction is product status (Active vs. Obsolete) and RoHS compliance level (ROHS3 Compliant vs. RoHS non-compliant).

Parametric Equivalents: LP3855ES-5.0/NOPB and LP3872ES-5.0/NOPB maintain core functional parameters (5V output, 1.5A current, TO-263 package, -40°C to 125°C operating range) but exhibit variations in dropout voltage and quiescent current specifications. LP3855ES-5.0/NOPB matches the 0.38V dropout specification, while LP3872ES-5.0/NOPB specifies 0.55V dropout and 5 mA quiescent current.

Manufacturer-Recommended Alternatives: MIC29151-5.0WU and MIC29151-5.0WU-TR from Microchip Technology provide functional equivalence with identical 5V output and 1.5A current rating in the same TO-263-5 package. These parts differ in maximum input voltage (26V vs. 7V) and include additional protection features (Reverse Polarity, Transient Voltage protection).

All substitute candidates maintain identical output configuration (Positive Fixed), number of regulators (1), package form factor (TO-263/DDPAK-5), and operating temperature range (-40°C to 125°C).

Parameter Comparison

Parameter	LP3852ES-5.0	LP3852ES-5.0/NOPB	LP3855ES-5.0/NOPB	LP3872ES-5.0/NOPB	MIC29151-5.0WU	MIC29151-5.0WU-TR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Microchip Technology	Microchip Technology
Output Voltage	5V	5V	5V	5V	5V	5V
Output Current	1.5A	1.5A	1.5A	1.5A	1.5A	1.5A
Input Voltage (Max)	7V	7V	7V	7V	26V	26V
Voltage Dropout (Max)	0.38V @ 1.5A	0.38V @ 1.5A	0.38V @ 1.5A	0.55V @ 1.5A	0.6V @ 1.5A	0.6V @ 1.5A
Quiescent Current	3 mA	3 mA	3 mA	5 mA	—	—
Package Type	TO-263 (DDPAK-5)	TO-263 (DDPAK-5)	TO-263 (DDPAK-5)	TO-263 (DDPAK-5)	TO-263-5	TO-263-5
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 125°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Option	—	Tube	Tube	Tube	Tube	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

For Direct Replacement: LP3852ES-5.0/NOPB is the primary substitute, offering identical electrical performance with the advantage of Active product status and ROHS3 compliance. This part is suitable for applications where the original LP3852ES-5.0 specifications are required and RoHS compliance is mandated.

For Parametric Equivalence with Tighter Specifications: LP3855ES-5.0/NOPB maintains the 0.38V dropout voltage specification matching the original part while providing Active status and ROHS3 compliance. This selection is appropriate when dropout voltage performance is critical to circuit operation.

For Alternative Texas Instruments Source: LP3872ES-5.0/NOPB provides Active status and ROHS3 compliance but specifies higher dropout voltage (0.55V) and quiescent current (5 mA). Selection of this part requires verification that the increased dropout voltage and quiescent current do not degrade system performance.

For Cross-Manufacturer Substitution: MIC29151-5.0WU and MIC29151-5.0WU-TR from Microchip Technology offer Active status, ROHS3 compliance, and extended input voltage rating (26V maximum). These parts include additional protection features (Reverse Polarity, Transient Voltage protection) and are available in alternative packaging formats. Selection requires confirmation that the higher input voltage rating and additional protection features are compatible with circuit design requirements.

Frequently Asked Questions (FAQ)

Q: Can LP3852ES-5.0/NOPB be used as a direct replacement for LP3852ES-5.0?

A: Yes. LP3852ES-5.0/NOPB is electrically and mechanically identical to the original part. The primary differences are product status (Active vs. Obsolete) and RoHS compliance classification (ROHS3 Compliant vs. RoHS non-compliant). Both parts share identical output voltage (5V), output current (1.5A), dropout voltage (0.38V @ 1.5A), and TO-263 package configuration.

Q: What is the difference between LP3855ES-5.0/NOPB and LP3872ES-5.0/NOPB?

A: Both parts maintain 5V output and 1.5A current in the TO-263 package. LP3855ES-5.0/NOPB specifies 0.38V dropout voltage and 3 mA quiescent current, matching the original LP3852ES-5.0 specifications. LP3872ES-5.0/NOPB specifies 0.55V dropout voltage and 5 mA quiescent current. Selection depends on whether the higher dropout voltage and quiescent current are acceptable for the application.

Q: Why do MIC29151-5.0WU and MIC29151-5.0WU-TR have a higher maximum input voltage (26V vs. 7V)?

A: The MIC29151 series from Microchip Technology is designed for broader input voltage applications. The higher input voltage rating (26V) does not affect operation in circuits designed for 7V maximum input. These parts are suitable for applications requiring extended input voltage range and include additional protection features not present in the LP3852 series.

Q: What is the difference between MIC29151-5.0WU and MIC29151-5.0WU-TR?

A: Both parts are electrically identical. The difference is packaging format: MIC29151-5.0WU is supplied in Tube packaging, while MIC29151-5.0WU-TR is supplied in Cut Tape (CT) and Digi-Reel® format. Selection depends on assembly process requirements and volume considerations.

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

A: Yes. All substitute parts are available in TO-263 (DDPAK-5) or TO-263-5 package configuration, ensuring mechanical compatibility with the original LP3852ES-5.0 footprint and pin assignment.

Q: Which substitute part should be selected for new designs?

A: For new designs requiring RoHS compliance and Active product status, LP3852ES-5.0/NOPB is the recommended selection. For applications requiring extended input voltage range or additional protection features, MIC29151-5.0WU or MIC29151-5.0WU-TR from Microchip Technology are suitable alternatives. Selection should be based on specific circuit requirements regarding input voltage range, dropout voltage performance, and required protection features.

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