LM2991T Texas Instruments Integrated Circuit (Transistor Outline, Vertical) In Stock

Output Voltage Adjustable from −3 V to −24 V, Typically −2 V to −25 V • Output Current in Excess of 1 A • Dropout Voltage Typically 0.6 V at 1-A Load • Low Quiescent Current • Internal Short Circuit Current Limit • Internal Thermal Shutdown With Hysteresis • TTL, CMOS Compatible ON/OFF Switch • Functional Complement to the LM2941 Series

OBSOLETEIntegrated CircuitVerified May 2026
Package / Visual Reference
LM2991TTransistor Outline, Vertical
Quick Facts
Manufacturer
Texas Instruments
Package
Transistor Outline, Vertical
Pin Count
3
Lifecycle
OBSOLETE
Category
Integrated Circuit
Price
From $2.5935(MOQ 1)
Lead Time
3–7 business days
Shipping
DHL Express · Worldwide

Specifications

Pbfree CodeYes
Date Of Intro1994-06-01
YTEOL0
AdjustabilityADJUSTABLE
Dropout Voltage1-Max1V
Dropout Voltage1-Nom0.6V
Input Voltage-Max0.3V
Input Voltage-Min26V
JESD-30 CodeR-PSFM-T5
JESD-609 Codee0
Line Regulation-Max (%/V)0.04
Load Regulation-Max(%)0.4%
Number of Functions1
Number of Outputs1
Operating Temperature TJ-Max125°C
Operating Temperature TJ-Min-40 °C
Output Current1-Max1A
Output Voltage1-Max24V
Output Voltage1-Min3V
Package Body MaterialPLASTIC/EPOXY
Package Equivalence CodeSIP5,.1,67TB
Package ShapeRECTANGULAR
Package StyleFLANGE MOUNT
Packing MethodTUBE
Qualification StatusNot Qualified
Regulator TypeADJUSTABLE NEGATIVE SINGLE OUTPUT LDO REGULATOR
Surface MountNO
TechnologyBIPOLAR
Terminal FinishTIN LEAD
Terminal FormTHROUGH-HOLE
Terminal Pitch1.7mm
Terminal PositionSINGLE
Voltage Tolerance-Max5%
PackageTransistor Outline, Vertical

Compliance & Regulatory

Moisture Sensitivity LevelMSL 1
ECCNEAR99
HTS Code8542.39.00.60

Datasheet

LM2991T Datasheet Download

Official datasheet from Texas Instruments

Alternate & Equivalent Parts

Compatible alternatives and drop-in replacements for LM2991T:

LM2991T/NOPBNational Semiconductor Corporation Adjustable Negative LDO

Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar, PSFM5

View Part →
LM2991T/LF03Texas Instruments

Adjustable Negative LDO Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar

View Part →

Frequently Asked Questions

What is the price of LM2991T?

LM2991T is priced from $2.5935 USD depending on quantity. Submit an RFQ on FindMyChip for the best current pricing from authorized China distributors.

Is LM2991T in stock?

LM2991T is currently available at FindMyChip. We maintain stock from authorized distributors and ship worldwide with typical 3-7 business day lead time.

Where can I buy LM2991T?

You can buy LM2991T from FindMyChip, a B2B electronic component platform sourcing from China distributors. We offer competitive pricing and low MOQ for LM2991T from Texas Instruments.

What is the datasheet for LM2991T?

The official LM2991T datasheet from Texas Instruments contains full specifications including pin configuration, electrical characteristics, and application notes. Download it directly from the datasheet section above.

What package does LM2991T come in?

LM2991T is available in Transistor Outline, Vertical packaging. See the package diagram and pinout above for detailed dimensional information.

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About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

AvailabilityIn Stock
Reference Price (USD)
From $2.5935
Buy from 1pc · Factory-direct pricing
Qty.Unit PriceExt. Price
1+$3.5840$3.58
2+$2.6880$5.38
27+$2.6000$70.20
68+$2.5935$176.36
pcs
Unit price: $3.5840 · Total: $3.58

In Stock · 24h Response · Worldwide Shipping

Lead Time3-7 business days
MOQFrom 1 piece
ShippingDHL / FedEx / UPS
OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.

RP
Rajesh Patel
Procurement Manager, VoltEdge Energy, India