LM2991SX/NOPB The Texas Instruments LM2991SX/NOPB is a 1-A, negative, adjustable low-dropout voltage regulator. It offers an output voltage range from -3 V to -24 V.
Mfr Part #:

LM2991SX/NOPB

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LM2991SX/NOPB is a 1-A, negative, adjustable low-dropout voltage regulator. It offers an output voltage range from -3 V to -24 V.
✓ Total Stock: 3,526 pcs
$ Price Range: $1.57

LM2991SX/NOPB Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
3,500 pcs
3500 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
26 pcs
26 pcs On Request 1 On Request On Request On Request On Request On Request

LM2991SX/NOPB Specifications Quick View

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

LM2991SX/NOPB Description

Short technical summary and product information.

The LM2991SX/NOPB from Texas Instruments is a linear, negative, adjustable low-dropout voltage regulator designed for various power management applications. It can supply up to 1 A of load current and features an adjustable output voltage range from -3 V to -24 V, with a typical range of -2 V to -25 V.

 

Key electrical specifications include a wide input voltage range from -26 V to 0.3 V, a typical dropout voltage of 600 mV at a 1-A load, and a low quiescent current of 0.7 mA. The regulator also provides features such as internal short circuit current limit and thermal shutdown with hysteresis. It operates within an ambient temperature range of -40°C to 125°C.

 

This component is available in a Surface Mount DDPAK/TO-263-5 package, suitable for integration into compact electronic designs. The LM2991SX/NOPB includes an enable control feature for remote shutdown capability, making it a versatile choice for power supply circuits requiring precise negative voltage regulation.

LM2991SX/NOPB Quick Information

Product Type: Voltage Regulator - Linear
Canonical Name: LM2991SX/NOPB Adjustable Negative Low-Dropout Voltage Regulator
Subcategory: Linear

LM2991SX/NOPB Compliance

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

LM2991SX/NOPB Estimated Pricing

Qty Low High
1+ $1.57 $1.57

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

LM2991SX/NOPB Features

  • Adjustable negative output voltage.
  • 1A maximum output current.
  • Low dropout voltage at 1A.
  • Internal short circuit protection.
  • Enable pin for remote control.

LM2991SX/NOPB Applications

  • Powering sensitive analog circuits.
  • Generating negative supply rails.
  • Use in battery-powered devices.
  • Post-regulation for switching supplies.

LM2991SX/NOPB FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LM2991SX/NOPB?

The input voltage range is from -26 V to 0.3 V.

What is the output voltage range of the LM2991SX/NOPB?

The output voltage is adjustable from -3 V to -24 V, typically -2 V to -25 V.

What is the maximum output current of the LM2991SX/NOPB?

The maximum output current is 1 A.

What is the dropout voltage of the LM2991SX/NOPB?

The typical dropout voltage is 600 mV at a 1 A load.

What is the operating temperature range of the LM2991SX/NOPB?

The operating temperature range is -40°C to 125°C.

What package is the LM2991SX/NOPB available in?

It is available in a surface-mount DDPAK/TO-263-5 package (also called TO-263-6, D²Pak).

What is the quiescent current of the LM2991SX/NOPB?

The typical quiescent current is 0.7 mA.

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