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LM2991T The Texas Instruments LM2991T is a negative adjustable low-dropout voltage regulator. It offers up to 1A of output current and features an enable control pin.
Mfr Part #:

LM2991T

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LM2991T is a negative adjustable low-dropout voltage regulator. It offers up to 1A of output current and features an enable control pin.
✓ Total Stock: 4,153 pcs
$ Price Range: $0.28

LM2991T Available from 4 distributors

✓ Authorised
✓ Non-Authorised
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

LM2991T Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Accuracy
Control Features
Current
Mounting Type
Noise
Number of Regulators
Operating Temperature
Output Configuration
Output Type
PSRR
Protection Features
Supplier Device Package
Thermal Resistance
Voltage
Voltage Dropout (Max)
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LM2991T Description

Short technical summary and product information.

The LM2991T from Texas Instruments is a linear, negative, adjustable low-dropout voltage regulator designed for various power management applications. It provides an output current capability of up to 1A and features an adjustable output voltage range from -3V to -24V.

 

Key electrical characteristics include a typical dropout voltage of 600mV at a 1A load and a low quiescent current of 0.7mA. The regulator includes protection features such as over-temperature and short-circuit protection, enhancing its reliability in demanding environments. It also incorporates an ON/OFF pin for remote shutdown capability, compatible with TTL and CMOS logic levels.

 

This device is supplied in a TO-220-5 package, suitable for through-hole mounting. The operating temperature range is -40°C to 125°C, making it suitable for a wide array of industrial and automotive applications where stable negative voltage regulation is required. Its design focuses on low dropout voltage and low quiescent current for efficient power delivery.

LM2991T Quick Information

Product Type: Voltage Regulator - Linear
Canonical Name: LM2991T Negative Adjustable Low-Dropout Voltage Regulator
Subcategory: Linear

LM2991T Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LM2991T Estimated Pricing

Qty Low High
1+ $0.28 $0.28

Estimated market price range - modelled values for guidance only, not live distributor offers.

LM2991T Features

  • Negative adjustable low-dropout regulator
  • Up to 1A output current capability
  • Adjustable output voltage from -3V to -24V
  • Enable pin for remote shutdown
  • TO-220-5 package for through-hole mounting

LM2991T Applications

  • Provides stable negative voltage regulation
  • Suitable for industrial applications
  • Used in systems requiring remote shutdown
  • Power supply circuits requiring low dropout

LM2991T FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range for the LM2991T?

-26V to 0.3V.

What is the package type of the LM2991T?

TO-220-5, through-hole mounting.

What is the operating temperature range?

-40°C to 125°C.

What is the output voltage range of the LM2991T?

Adjustable from -3V to -24V, typically -2V to -25V.

What is the dropout voltage at 1A load?

Typically 600mV, maximum 1V.

What protection features are included?

Over-temperature and short-circuit protection.

What is the quiescent current of the LM2991T?

Typically 0.7mA.

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