LM2991TAlternatives & Equivalent Parts
About LM2991T
LM2991T is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Transistor Outline, Vertical package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | LM2991TSource | LM2991T/NOPB | LM2991T/LF03 |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Transistor Outline, Vertical | Other | Transistor Outline, Vertical |
| Pin Count | 3 | 3 | 3 |
| Temperature Range | — | — | — |
| Price | $2.5935 | $2.5935 | $2.5935 |
| Electrical Parameters | |||
| Pbfree Code | Yes | Yes | Yes |
| Date Of Intro | 1994-06-01 | — | — |
| YTEOL | 0 | 15 | 15 |
| Adjustability | ADJUSTABLE | ADJUSTABLE | ADJUSTABLE |
| Dropout Voltage1-Max | 1 V | 1 V | 1 V |
| Dropout Voltage1-Nom | 0.6 V | 0.6 V | 0.6 V |
| Input Voltage-Max | 0.3 V | 0.3 V | 0.3 V |
| Input Voltage-Min | 26 V | 26 V | 26 V |
| JESD-30 Code | R-PSFM-T5 | R-PSFM-T5 | R-XZFM-T5 |
| JESD-609 Code | e0 | e3 | e3 |
| Line Regulation-Max (%/V) | 0.04 | 0.04 | 0.04 |
| Load Regulation-Max(%) | 0.4% | 0.4% | 0.4% |
| Number of Functions | 1 | 1 | 1 |
| Number of Outputs | 1 | 1 | 1 |
| Operating Temperature TJ-Max | 125 °C | 125 °C | 125 °C |
| Operating Temperature TJ-Min | -40 °C | -40 °C | -40 °C |
| Output Current1-Max | 1 A | 1 A | 1 A |
| Output Voltage1-Max | 24 V | 24 V | 24 V |
| Output Voltage1-Min | 3 V | 3 V | 3 V |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | UNSPECIFIED |
| Package Equivalence Code | SIP5,.1,67TB | SIP5,.1,67TB | ZIP5,.15,.17,67TB |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | FLANGE MOUNT | FLANGE MOUNT | FLANGE MOUNT |
| Packing Method | TUBE | TUBE | TUBE |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified |
| Regulator Type | ADJUSTABLE NEGATIVE SINGLE OUTPUT LDO REGULATOR | ADJUSTABLE NEGATIVE SINGLE OUTPUT LDO REGULATOR | ADJUSTABLE NEGATIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | NO | NO | NO |
| Technology | BIPOLAR | BIPOLAR | BIPOLAR |
| Terminal Finish | TIN LEAD | Matte Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE |
| Terminal Pitch | 1.7 mm | 1.7 mm | 1.702 mm |
| Terminal Position | SINGLE | SINGLE | ZIG-ZAG |
| Voltage Tolerance-Max | 5% | 5% | 5% |
| ## LM2991T/LF03 Alternates Showing results | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar, PSFM5
Adjustable Negative LDO Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar
Why Look for Alternatives?
Finding alternatives for LM2991T is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating LM2991T replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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Request Alternatives for LM2991TFAQ
What is equivalent to LM2991T?
Known equivalents for LM2991T include LM2991T/NOPB, LM2991T/LF03. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of LM2991T?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify LM2991T alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.