Part Details for LM2991SX by Texas Instruments
Results Overview of LM2991SX by Texas Instruments
- Distributor Offerings: (3 listings)
- Number of FFF Equivalents: (5 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (10 options)
- CAD Models: (Request Part)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
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LM2991SX Information
LM2991SX by Texas Instruments is a Linear Regulator IC.
Linear Regulator ICs are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Price & Stock for LM2991SX
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
LM2991SXTR-ND
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DigiKey | IC REG LINEAR NEG ADJ 1A TO263 Min Qty: 500 Container: Tape & Reel |
0 Tape & Reel |
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$2.6624 / $3.3230 | Buy Now |
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Chip Stock | 1-A, negative, adjustable low-dropout voltage regulator with enable 5-DDPAK/TO-263 -40 to 125 | 3499 |
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RFQ | |
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Win Source Electronics | IC REG LDO NEG ADJ 1A DDPAK | 17430 |
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$3.6935 / $5.5402 | Buy Now |
US Tariff Estimator: LM2991SX by Texas Instruments
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
Part Details for LM2991SX
LM2991SX Part Data Attributes
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LM2991SX
Texas Instruments
Buy Now
Datasheet
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Compare Parts:
LM2991SX
Texas Instruments
Adjustable Negative LDO Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar, PSSO5
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| Pbfree Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Part Package Code | D2PAK | |
| Package Description | To-263, 5 Pin | |
| Pin Count | 4 | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.60 | |
| Date Of Intro | 1994-06-01 | |
| Adjustability | Adjustable | |
| Dropout Voltage1-Max | 1 V | |
| Dropout Voltage1-Nom | 0.6 V | |
| Input Voltage-Max | 0.3 V | |
| Input Voltage-Min | 26 V | |
| JESD-30 Code | R-PSSO-G5 | |
| JESD-609 Code | e0 | |
| Length | 10.16 Mm | |
| Line Regulation-Max (%/V) | 0.04 | |
| Load Regulation-Max(%) | 0.4% | |
| Moisture Sensitivity Level | 3 | |
| Number of Functions | 1 | |
| Number of Outputs | 1 | |
| Number of Terminals | 5 | |
| Operating Temperature TJ-Max | 125 °C | |
| Operating Temperature TJ-Min | -40 °C | |
| Output Current1-Max | 1 A | |
| Output Voltage1-Max | 24 V | |
| Output Voltage1-Min | 3 V | |
| Package Body Material | Plastic/Epoxy | |
| Package Code | TO-263 | |
| Package Equivalence Code | SMSIP5H,.6,67TB | |
| Package Shape | Rectangular | |
| Package Style | Small Outline | |
| Packing Method | Tr, 13 Inch | |
| Peak Reflow Temperature (Cel) | 235 | |
| Qualification Status | Not Qualified | |
| Regulator Type | Adjustable Negative Single Output Ldo Regulator | |
| Seated Height-Max | 4.8 Mm | |
| Surface Mount | Yes | |
| Technology | Bipolar | |
| Terminal Finish | Tin/Lead (Sn/Pb) | |
| Terminal Form | Gull Wing | |
| Terminal Pitch | 1.7 Mm | |
| Terminal Position | Single | |
| Time@Peak Reflow Temperature-Max (s) | 20 | |
| Voltage Tolerance-Max | 5% | |
| Width | 8.64 Mm |
Alternate Parts for LM2991SX
This table gives cross-reference parts and alternative options found for LM2991SX. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM2991SX, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| LM2991SX/NOPB | Texas Instruments | $1.6912 | Adjustable Negative LDO Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar, PSSO5 | LM2991SX vs LM2991SX/NOPB |
| LM2991S/NOPB | National Semiconductor Corporation | Check for Price | Adjustable Negative LDO Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar, PSSO5 | LM2991SX vs LM2991S/NOPB |
| LM2991S | Texas Instruments | Check for Price | Adjustable Negative LDO Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar, PSSO5 | LM2991SX vs LM2991S |
| LM2991S | National Semiconductor Corporation | Check for Price | Adjustable Negative LDO Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar, PSSO5 | LM2991SX vs LM2991S |
| LM2991SX/NOPB | National Semiconductor Corporation | Check for Price | Adjustable Negative LDO Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar, PSSO5 | LM2991SX vs LM2991SX/NOPB |
LM2991SX Frequently Asked Questions (FAQ)
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The maximum input voltage that can be applied to the LM2991SX is 40V, but it's recommended to keep it below 35V for reliable operation.
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To ensure stability, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, keep the input and output capacitors close to the IC and use a good quality PCB layout.
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The minimum input voltage required for the LM2991SX to operate is 7.5V, but it's recommended to keep it above 8V for reliable operation.
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The LM2991SX is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage as the temperature increases to ensure reliable operation.
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The output voltage of the LM2991SX can be calculated using the formula: Vout = 1.24 x (1 + R2/R1), where R1 and R2 are the resistors in the feedback network.