Request Quote
(Ships tomorrow)
LP3855ESX-ADJ Linear Voltage Regulator Equivalent & Substitute Parts
Part Overview
The LP3855ESX-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 operates across an input voltage range up to 7V with adjustable output from 1.23V to 6.6V. The part is currently classified as obsolete, making identification of functionally equivalent alternatives 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 | 1.5A |
| Voltage - Input (Max) | 7V |
| Voltage - Output (Min/Fixed) | 1.23V |
| Voltage - Output (Max) | 6.6V |
| Voltage Dropout (Max) | 0.435V @ 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 |
Substitute Part Grouping Explanation
Substitution for the LP3855ESX-ADJ is determined by strict equivalence across the following critical parameters:
- Output configuration (Positive)
- Output type (Adjustable)
- Output current rating (1.5A)
- Input voltage maximum (7V)
- Output voltage range (1.23V to 6.6V minimum, 6.6V maximum)
- Voltage dropout specification (0.435V @ 1.5A)
- Package type (TO-263 DDPAK-5)
- Mounting type (Surface Mount)
- Operating temperature range (-40°C ~ 125°C)
- Protection features (Over Current, Over Temperature, Short Circuit)
Parts meeting all these parameters are classified as parametric equivalents and direct substitutes.
Parameter Comparison
| Parameter | LP3855ESX-ADJ | LP3855ESX-ADJ/NOPB |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Active |
| Output Configuration | Positive | Positive |
| Output Type | Adjustable | Adjustable |
| Current - Output | 1.5A | 1.5A |
| Voltage - Input (Max) | 7V | 7V |
| Voltage - Output (Min/Fixed) | 1.23V | 1.23V |
| Voltage - Output (Max) | 6.6V | 6.6V |
| Voltage Dropout (Max) | 0.435V @ 1.5A | 0.435V @ 1.5A |
| Current - Quiescent (Iq) | 3 mA | 3 mA |
| PSRR | 73dB ~ 57dB (120Hz) | 73dB ~ 57dB (120Hz) |
| Control Features | Enable | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab) | TO-263-6, D2PAK (5 Leads + Tab) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) |
Engineering Selection Recommendations
The LP3855ESX-ADJ/NOPB is a direct parametric equivalent to the LP3855ESX-ADJ. Both parts share identical electrical specifications, output characteristics, and package configuration. The primary distinction is product status: the original LP3855ESX-ADJ is obsolete, while the LP3855ESX-ADJ/NOPB maintains active status from Texas Instruments.
An additional consideration is regulatory compliance. The LP3855ESX-ADJ/NOPB carries ROHS3 compliance certification, whereas the original part is RoHS non-compliant. For applications subject to RoHS requirements or environmental regulations, the LP3855ESX-ADJ/NOPB is the appropriate selection. Both parts maintain identical MSL ratings and REACH status.
Frequently Asked Questions (FAQ)
Q: Can LP3855ESX-ADJ/NOPB replace LP3855ESX-ADJ in existing designs?
A: Yes. The LP3855ESX-ADJ/NOPB is a direct parametric equivalent with identical electrical performance, output specifications, and TO-263 package configuration. No design modifications are required.
Q: What is the difference between LP3855ESX-ADJ and LP3855ESX-ADJ/NOPB?
A: Both parts are functionally identical. The primary differences are product status (obsolete vs. active) and RoHS compliance (non-compliant vs. ROHS3 compliant). The "/NOPB" suffix indicates the part is supplied in Tape & Reel packaging format.
Q: Are there any package or pinout differences?
A: No. Both parts use the TO-263-6 (D2PAK with 5 Leads + Tab) package with identical pinout and mechanical dimensions.
Q: Which part should be selected for new designs?
A: The LP3855ESX-ADJ/NOPB is the appropriate choice for new designs. It maintains active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.
Q: Are moisture sensitivity levels identical?
A: Yes. Both parts carry MSL 3 (168 Hours) rating, requiring identical handling and storage protocols.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts