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LM2991S - TI
Manufacturer:
TI
ManyChip's Part#:
MC10655993
Category:
Voltage Regulator
Package:
TO-263-5
Datasheet:
Datasheet 3D Model
Description:
TEXAS INSTRUMENTS LM2991S LDO Voltage Regulator, Adjustable, -26V to 300mV in, 600mV drop, -3V to -24V/1A out, TO-263-5
Stock Locations:
Availability:
688 pcs In Stock
MOQ:
1 pcs
Unit Price:
$ 3.82

Updated at 16/12/2025 10:30:15(UTC+8)

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Description

DESCRIPTION
The LM2991 is a low dropout adjustable negative regulator with a output voltage range between −3V to −24V. The LM2991 provides up to 1A 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 1A load current is typically 0.6V and an ensured worst-case maximum of 1V over the entire operating temperature range. The quiescent current is typically 1 mA with a 1A load current and an input-output voltage differential greater than 3V. 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 ≤ 3V).
1FEATURES
2• Output Voltage Adjustable from −3V to −24V, Typically −2V to −25V
• Output Current in Excess of 1A
• Dropout Voltage Typically 0.6V at 1A 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
APPLICATIONS
• Post Switcher Regulator
• Local, On-Card, Regulation
• Battery Operated Equipment

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LM2991S Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	5 Pin
Case/Package	TO-263-5
Supply Voltage (DC)	300mV (max)
Current Rating	1.00 A
Number of Outputs	1 Output
Output Voltage	-2.00 V, -24.0 V (max), -3.00 V (min)
Output Current	1 A
Supply Current	0.7mA ~ 5mA
Number of Positions	5 Position
Quiescent Current	0.7 mA
voltage rating	600 mV
Number of Regulated Outputs	1 Output
Input Voltage (Max)	0.3 V
Input Voltage (Min)	26 V
Output Current (Max)	1 A
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Input Voltage	0.3 V
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Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	Non-Compliant
Lead-Free Status	Contains Lead
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

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