Texas Instruments LP3891EMR
LP3891EMR variants from Texas Instruments
LP3891EMR Overview
What changes between part numbers, and what to check before you lock the BOM — Integrated Circuits (ICs).
Key Features
- Footprint / package: 8-PowerSOIC (0.154", 3.90mm Width)Single package option across listed variants; still confirm reel vs tube suffix if you auto-insert.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 2 distinct suffix patternsExamples: 1.8/NOPB, 1.2/NOPB. Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Integrated Circuits (ICs) — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 2 LP3891EMR part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| LP3891EMR-1.8/NOPB | Package: 8-PowerSOIC (0.154", 3.90mm Width) | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 125°C | Output Type: Fixed | Voltage Input Max: 5.5V | Supplier Device Package: 8-SO PowerPad | 8-PowerSOIC (0.154", 3.90mm Width) | Texas Instruments | Active | Compliant | In Stock | |
| LP3891EMR-1.2/NOPB | 1.2V LDO Regulator, 800mA, 1.5% Acc, 115mV Dropout, SOIC | - | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on LP3891EMR map to package, grade, and reel options.
How to Choose the Right LP3891EMR Integrated Circuits (ICs)
Match the footprint first
Packages here: 8-PowerSOIC (0.154", 3.90mm Width). Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For LP3891EMR, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "LP3891EMR" — include the full suffix (e.g. 1.8/NOPB, 1.2/NOPB). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for LP3891EMR product family
Identity
Variant Parameters
Source LP3891EMR with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 2 ordering variants from Texas Instruments. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the LP3891EMR product family.