LM2991SX/NOPB Part Information
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.
- 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
|Input Voltage Min||-26V|
|Input Voltage Max||300mV|
|Fixed Output Voltage Nom.||-|
|Adjustable Output Voltage Min||-3V|
|Adjustable Output Voltage Max||-25V|
|Dropout Voltage Vdo||600mV|
|LDO Regulator Case Style||TO-263|
|No. of Pins||5Pins|
|Operating Temperature Min||-40°C|
|Operating Temperature Max||125°C|
|Automotive Qualification Standard||-|
|RoHS Phthalates Compliant||Yes|
|MSL||MSL 3 - 168 hours|
|SVHC||No SVHC (27-Jun-2018)|
Alternative Part Descriptions
- ADJUSTABLE LDO VOLTAGE REGULATOR, -2V TO; Output Type:Adjustable; Input Voltage Min:-26V; Input Voltage Max:300mV; Fixed Output Voltage Nom.:-; Adjustable Output Voltage Min:-3V; Adjustable Output Voltage Max:-25V; Output Current:1A;RoHS Compliant: Yes | Newark Electronics
- 1-A, negative, adjustable low-dropout voltage regulator with enable | Texas Instruments
- LDO Voltage Regulator [Texas Instruments] LM2991SX/NOPB LDO Voltage Regulator | Distrelec
Frequently Asked Questions
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The LM2991SX/NOPB is listed under Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators.
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Is the LM2991SX/NOPB RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Farnell.
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