LM2991S/NOPB Part Information

Details for LM2991S/NOPB by Texas Instruments

Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators

Part Description

The LM2991 is a low dropout adjustable negative regulator with a output voltage range between −3 V to −24 V. The LM2991 provides up to 1 A of load current and features a ON /OFF pin for remote shutdown capability. The LM2991 uses new circuit design techniques to provide a low dropout voltage, low quiescent current and low temperature coefficient precision reference. The dropout voltage at 1-A load current is typically 0.6 V and an ensured worst-case maximum of 1 V over the entire operating temperature range. The quiescent current is typically 1 mA with a 1-A load current and an input-output voltage differential greater than 3 V. A unique circuit design of the internal bias supply limits the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (VOUT − VIN ≤ 3 V). The LM2991 is short-circuit proof, and thermal shutdown includes hysteresis to enhance the reliability of the device when inadvertently overloaded for extended periods. The LM2991 is available in 5lead TO-220 and DDPAK/TO-263 packages and is rated for operation over the automotive temperature range of −40°C to +125°C. Mil-Aero versions are also available.

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Part Features

  • Dropout Voltage Typically 0.6 V at 1-A Load
  • Functional Complement to the LM2941 Series
  • Internal Short Circuit Current Limit
  • Internal Thermal Shutdown With Hysteresis
  • Low Quiescent Current
  • Output Current in Excess of 1 A
  • Output Voltage Adjustable from u22123 V to u221224 V, Typically u22122 V to u221225 V
  • TTL, CMOS Compatible ON/OFF Switch

Part Specifications

Output Type Adjustable
Input Voltage Min -26V
Input Voltage Max 300mV
Fixed Output Voltage Nom. -
Adjustable Output Voltage Min -3V
Adjustable Output Voltage Max -24V
Output Current 1A
Dropout Voltage Vdo 600mV
LDO Regulator Case Style TO-263
No. of Pins 5Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (27-Jun-2018)
No. of Outputs 1Outputs
Operating Temperature Range -40°C to +125°C
Output Voltage -3V
Output Voltage Adjustable Range -2V to -25V
Output Voltage Max -24V
Output Voltage Min -3V
Primary Input Voltage -26V
Termination Type Surface Mount Device
Voltage Regulator Type Inverted Adjustable
RoHS Compliant

Alternative Part Descriptions

  • Voltage regulator,LM2991S -25V 1A | RS Components
  • ADJUSTABLE LDO VOLTAGE REGULATOR, -2V TO -25V 1A TO-263-5; Output Type:Adjustable; Input Voltage Min:-26V; Input Voltage Max:300mV; Fixed Output Voltage Nom.:-; Adjustable Output Voltage Min:-24V; Adjustable Output Voltage Max:-3V RoHS Compliant: Yes | Newark Electronics
  • IC: voltage regulator; LDO,adjustable; -24÷-3V; 1A; TO263-5; SMD | Transfer Multisort Elektronik
  • 1-A, negative, adjustable low-dropout voltage regulator with enable | Texas Instruments
  • LDO Voltage Regulator [Texas Instruments] LM2991S/NOPB LDO Voltage Regulator | Distrelec

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