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LP3876ESX-ADJ Linear Voltage Regulator
Part Overview
The LP3876ESX-ADJ is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This device delivers 3A output current in a compact TO-263 (DDPAK-5) surface mount package. The part is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Current - Output | 3A |
| Voltage - Input (Max) | 7V |
| Voltage - Output (Min/Fixed) | 1.18V |
| Voltage - Output (Max) | 5.8V |
| Voltage Dropout (Max) | 1.2V @ 3A |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab) |
| Operating Temperature | -40°C ~ 125°C |
| Protection Features | Over Current, Over Temperature, Short Circuit |
Substitute Part Grouping Explanation
Substitution for the LP3876ESX-ADJ is determined by strict equivalence across the following critical parameters:
- Output current rating: 3A
- Adjustable output voltage range: 1.18V to 5.8V
- Maximum input voltage: 7V
- Dropout voltage: 1.2V @ 3A
- Package type: TO-263 (DDPAK-5)
- Protection features: Over Current, Over Temperature, Short Circuit
- Control features: Enable function
- Operating temperature range: -40°C ~ 125°C
The LP3876ESX-ADJ/NOPB is a parametric equivalent manufactured by Texas Instruments with identical electrical specifications and package configuration. The primary distinction is product status and compliance certification.
Parameter Comparison
| Parameter | LP3876ESX-ADJ | LP3876ESX-ADJ/NOPB |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Active |
| Output Configuration | Positive | Positive |
| Output Type | Adjustable | Adjustable |
| Current - Output | 3A | 3A |
| Voltage - Input (Max) | 7V | 7V |
| Voltage - Output (Min/Fixed) | 1.18V | 1.18V |
| Voltage - Output (Max) | 5.8V | 5.8V |
| Voltage Dropout (Max) | 1.2V @ 3A | 1.2V @ 3A |
| Current - Quiescent (Iq) | 5 mA | 5 mA |
| Current - Supply (Max) | 15 mA | 15 mA |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab) | TO-263-6, D2PAK (5 Leads + Tab) |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Protection Features | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit |
| Control Features | Enable | Enable |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The LP3876ESX-ADJ/NOPB is the direct parametric equivalent for the obsolete LP3876ESX-ADJ. Both parts share identical electrical performance and mechanical compatibility. The LP3876ESX-ADJ/NOPB is currently in active production status, ensuring availability for new designs and production replenishment.
The LP3876ESX-ADJ/NOPB carries ROHS3 compliance certification, whereas the original LP3876ESX-ADJ is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the LP3876ESX-ADJ/NOPB is the appropriate selection. Both parts maintain equivalent REACH and ECCN classifications.
Packaging format differs between the two parts: the LP3876ESX-ADJ is supplied as loose stock, while the LP3876ESX-ADJ/NOPB is available in Cut Tape (CT) and Digi-Reel® formats, which may influence procurement and assembly workflows.
Frequently Asked Questions (FAQ)
Q: Can the LP3876ESX-ADJ/NOPB be used as a direct replacement for the LP3876ESX-ADJ?
A: Yes. The LP3876ESX-ADJ/NOPB is a parametric equivalent with identical electrical specifications, output current rating, voltage ranges, dropout characteristics, and package configuration. Pin-for-pin compatibility is maintained.
Q: What is the significance of the "/NOPB" suffix?
A: The "/NOPB" designation indicates the part is supplied without plumbum (lead-free), reflecting RoHS3 compliance. This is a packaging and compliance designation that does not affect electrical performance or functional compatibility.
Q: Are there any thermal or performance differences between these parts?
A: No. Both parts maintain identical thermal characteristics, quiescent current, supply current, and protection features across the specified operating temperature range of -40°C to 125°C.
Q: What packaging options are available for the LP3876ESX-ADJ/NOPB?
A: The LP3876ESX-ADJ/NOPB is supplied in Cut Tape (CT) and Digi-Reel® formats. The original LP3876ESX-ADJ was supplied as loose stock. Both use the TO-263 (DDPAK-5) package.
Q: Is the LP3876ESX-ADJ/NOPB suitable for new designs?
A: Yes. The LP3876ESX-ADJ/NOPB is in active production status and is the recommended selection for new designs requiring a 3A adjustable linear voltage regulator in the TO-263 package.
Q: What are the moisture sensitivity requirements for storage and handling?
A: Both parts carry MSL 3 rating with a 168-hour floor life. Standard moisture control procedures for MSL 3 components apply to both the LP3876ESX-ADJ and LP3876ESX-ADJ/NOPB.
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