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LP3965ES-ADJ Linear Voltage Regulator Equivalent & Substitute Parts
Part Overview
The LP3965ES-ADJ is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This Surface Mount device delivers 1.5A output current in a TO-263 (DDPAK-5) package and supports input voltages up to 7V with adjustable output ranging from 1.216V to 5.1V. The part is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term production requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 7V |
| Voltage - Output (Min/Fixed) | 1.216V |
| Voltage - Output (Max) | 5.1V |
| Current - Output | 1.5A |
| Voltage Dropout (Max) | 0.55V @ 1.5A |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution for the LP3965ES-ADJ is determined by strict equivalence across the following critical parameters:
- Output configuration (Positive)
- Output type (Adjustable)
- Voltage specifications (Input Max: 7V; Output range: 1.216V to 5.1V)
- Current rating (1.5A output)
- Package type (TO-263 DDPAK-5)
- Mounting technology (Surface Mount)
- Protection features (Over Current, Over Temperature, Short Circuit)
- Operating temperature range (-40°C ~ 125°C)
- Regulatory compliance (ROHS3, REACH Unaffected)
The LP3965ES-ADJ/NOPB is identified as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and packaging format.
Parameter Comparison
| Parameter | LP3965ES-ADJ | LP3965ES-ADJ/NOPB |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Output Configuration | Positive | Positive |
| Output Type | Adjustable | Adjustable |
| Voltage - Input (Max) | 7V | 7V |
| Voltage - Output (Min/Fixed) | 1.216V | 1.216V |
| Voltage - Output (Max) | 5.1V | 5.1V |
| Current - Output | 1.5A | 1.5A |
| Voltage Dropout (Max) | 0.55V @ 1.5A | 0.55V @ 1.5A |
| 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 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Last Time Buy | Active |
| Packaging Format | Not specified | Tube |
Engineering Selection Recommendations
The LP3965ES-ADJ/NOPB is the direct substitute for LP3965ES-ADJ. Both parts are manufactured by Texas Instruments and share identical electrical and mechanical specifications. The LP3965ES-ADJ/NOPB maintains Active product status, ensuring continued availability and support compared to the Last Time Buy status of the original part. Both variants comply with ROHS3 and REACH requirements. The LP3965ES-ADJ/NOPB is supplied in Tube packaging, whereas the original part packaging format is not specified. For new designs or production continuity, the LP3965ES-ADJ/NOPB is the appropriate selection.
Frequently Asked Questions (FAQ)
Q: Are LP3965ES-ADJ and LP3965ES-ADJ/NOPB electrically identical?
A: Yes. Both parts deliver identical electrical performance across all specified parameters including output voltage range (1.216V to 5.1V), output current (1.5A), dropout voltage (0.55V @ 1.5A), and protection features.
Q: What is the difference between these two part numbers?
A: The primary differences are product status and packaging. LP3965ES-ADJ is Last Time Buy, while LP3965ES-ADJ/NOPB is Active. The substitute part is supplied in Tube packaging format.
Q: Can LP3965ES-ADJ/NOPB be used as a direct replacement on existing PCBs?
A: Yes. Both parts use identical TO-263 (DDPAK-5) package configuration and Surface Mount technology, enabling direct PCB compatibility without layout modifications.
Q: Are both parts compliant with current regulatory standards?
A: Yes. Both LP3965ES-ADJ and LP3965ES-ADJ/NOPB are ROHS3 Compliant and REACH Unaffected.
Q: Which part should be specified for new production?
A: LP3965ES-ADJ/NOPB should be specified for new production due to its Active product status and confirmed availability.
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