What is LM2991SX/NOPB?
LM2991SX/NOPB is a PMIC - Voltage Regulators - Linear component from Texas Instruments. This product page summarizes the core sourcing details buyers need before checking price, availability, documentation, or samples.
Supply original LM2991SX/NOPB, PMIC - Voltage Regulators - Linear, by Texas Instruments
IC REG LIN NEG ADJ 1A DDPAK
RoHS
Pictures are for reference only. Please contact us for the latest pictures.
Key specifications
Serise
-
Min Quantity
1
Category
Integrated Circuits (ICs)Sub Categroy
PMIC - Voltage Regulators - LinearDescription
IC REG LIN NEG ADJ 1A DDPAK
key Attributes
-
Why request a quote
Use the RFQ step to confirm the commercial and documentation details buyers usually need before placing an order.
Confirm stock and lead-time expectations
Check CoC or traceability support
Align inspection and fulfillment details
Trust signals
Globally recognized certifications
Visible certifications work best when they are paired with clear operational promises around traceability, handling, and inspection.
ISO 9001
Quality management processes for more consistent sourcing and handling.
AS9120B
Aerospace-focused distribution controls for traceability and reliability.
ISO 14001
Environmental management discipline across warehouse and operating workflows.
ESD Control
Electrostatic handling standards to help protect sensitive components.
Authenticity Verification
CoC Available on Request
Pre-Shipment Inspection
Responsive RFQ Support
Why buyers trust this sourcing flow
Our quality workflow is designed to reduce counterfeit risk and support confident procurement. Components are reviewed through documented handling and inspection steps so buyers can evaluate sourcing with stronger authenticity controls.
Structured product content
Review The Product The Way Buyers Actually Evaluate It
Jump between overview, specs, and related sourcing content without scanning one long uninterrupted page.
Product overview
Overview
Description:
The LM2991SX/NOPB is a negative adjustable linear voltage regulator IC from Texas Instruments. It has a single output of 1A and is available in a DDPAK/TO-263-5 package.
The device is designed to provide a regulated output voltage from an input voltage of up to 40V. It features a wide input voltage range, low dropout voltage, and low quiescent current.
Features:
• Wide input voltage range: up to 40V
• Low dropout voltage
• Low quiescent current
• Output voltage adjustable from -1.2V to -37V
• Output current of 1A
•
Thermal shutdown protection
• Short-circuit protection
• Over-voltage protection
• Reverse-battery protectionApplications:
The LM2991SX/NOPB is suitable for a wide range of applications, including:
• Battery-powered systems
• Automotive systems
• Industrial systems
• Portable electronics
• Power supplies
• Voltage regulation
The LM2991SX/NOPB is a negative adjustable linear voltage regulator IC from Texas Instruments. It has a single output of 1A and is available in a DDPAK/TO-263-5 package.
The device is designed to provide a regulated output voltage from an input voltage of up to 40V. It features a wide input voltage range, low dropout voltage, and low quiescent current.
Features:
• Wide input voltage range: up to 40V
• Low dropout voltage
• Low quiescent current
• Output voltage adjustable from -1.2V to -37V
• Output current of 1A
•
Thermal shutdown protection
• Short-circuit protection
• Over-voltage protection
• Reverse-battery protectionApplications:
The LM2991SX/NOPB is suitable for a wide range of applications, including:
• Battery-powered systems
• Automotive systems
• Industrial systems
• Portable electronics
• Power supplies
• Voltage regulation
Full technical breakdown
Detailed Specifications
Review grouped attributes and parameters without scanning one oversized table.
Fast scan
Popular Specs Surfaced First
Export Classifications & Environmental
JESD-609 Code
e3
Export Classifications & Environmental
RoHS Status
ROHS3 Compliant
Export Classifications & Environmental
REACH SVHC
No SVHC
Export Classifications & Environmental
HTSUS
8542.39.0001
Export Classifications & Environmental
Moisture Sensitivity Level (MSL)
3 (168 Hours)
Export Classifications & Environmental
ECCN Code
EAR99
JESD-609 Code
e3
RoHS Status
ROHS3 Compliant
REACH SVHC
No SVHC
HTSUS
8542.39.0001
Moisture Sensitivity Level (MSL)
3 (168 Hours)
ECCN Code
EAR99
Part Status
Active
Lifecycle Status
ACTIVE (Last Updated: 4 days ago)
REACH Status
REACH Unaffected
ECCN
EAR99
Length
10.16mm
Lead Free
Contains Lead
Mounting Type
Surface Mount
Factory Lead Time
6 Weeks
Packaging
Tape & Reel (TR)
Categories
Integrated Circuits (ICs)
Terminal Form
GULL WING
Operating Temperature
-40°C~125°C
Manufacturer
Texas
Peak Reflow Temperature (Cel)
245
Packing Method
TR
Subcategory
Other Regulators
Sub-Categories
PMIC - Voltage Regulators - Linear
Output Type
Adjustable
Weight
113.398093g
Number Of Functions
1
Contact Plating
Tin
Radiation Hardening
No
Mount
Surface Mount
Pbfree Code
yes
Technology
BIPOLAR
Terminal Position
SINGLE
Max Output Current
1A
Number Of Outputs
1
Number Of Pins
5
Number Of Terminations
5
Pin Count
4
Height
4.83mm
Quiescent Current
5mA
Thickness
4.58mm
Width
8.42mm
Package / Case
TO-263-6, D2Pak (5 Leads + Tab), TO-263BA
Load Regulation-Max(%)
0.4%
Current - Quiescent (Iq)
0.7mA
Line Regulation-Max (%/V)
0.04
Min Input Voltage
-26V
Voltage - Output (Min/Fixed)
-3V
Output Voltage
-24V
Current - Supply (Max)
5mA
Base Part Number
LM2991
Manufacturer'S Part No.
LM2991SX/NOPB
Max Output Voltage
-24V
Min Output Voltage
-3V
Reference Voltage
-1.186V
Control Features
Enable
Protection Features
Over Temperature, Short Circuit
Number Of Regulators
1
Output Configuration
Negative
PSRR
60dB (1kHz)
Dropout Voltage1-Nom
0.6V
Dropout Voltage
600mV
Voltage Dropout (Max)
1V @ 1A
Common questions
Product FAQ
Quick answers for buyers reviewing LM2991SX/NOPB, stock, documentation, and sourcing steps.
What package and description are listed for LM2991SX/NOPB?
LM2991SX/NOPB is listed with package reference TO-263-6. The current product description is IC REG LIN NEG ADJ 1A DDPAK, and buyers should confirm package, footprint, and electrical details against the datasheet or quotation notes before approval.
Is LM2991SX/NOPB available in stock?
This page currently shows 44012 units in stock and 44012 units available for LM2991SX/NOPB. Because electronic component availability can change quickly, submit an RFQ to confirm live stock, lead time, and final pricing.
Can I request a quote or sample for LM2991SX/NOPB?
Yes. Use the Quick Quote or Request Sample action on this page to send the quantity and sourcing requirements for LM2991SX/NOPB by Texas Instruments. The TrustCompo team can review price, availability, and documentation support.
Is a datasheet available for LM2991SX/NOPB?
A dedicated datasheet link is not currently listed for LM2991SX/NOPB by Texas Instruments. Contact us with the part number and required parameters so the team can help confirm documentation during quotation.
How should buyers verify LM2991SX/NOPB before ordering?
Buyers should confirm the manufacturer, package, quantity, target price, RoHS or compliance needs, and any Certificate of Conformance or traceability requirements for LM2991SX/NOPB before approving the order.
PMIC - Voltage Regulators - Linear
Recommended Products
Explore more parts from the same subcategory to compare fit, stock, and sourcing options.
LM337BD2TG
183 purchased
TO-263-3
RoHS
Datasheet
IC REG LINEAR NEG ADJ 1.5A D2PAK
Reference price
$1.33Add to RFQ list
ADP172ACBZ-1.0-R7
136 purchased
WLCSP
RoHS
Datasheet
IC REG LINEAR 1V 300MA 4WLCSP
Reference price
$0.47Add to RFQ list
ADP222ACPZ-1825-R7
210 purchased
CSP
RoHS
Datasheet
IC REG LINEAR 1.8V/2.5V 8LFCSP
Reference price
$0.69Add to RFQ list
LP2951-33DRG4
195 purchased
8SOIC
RoHS
IC REG LIN POS ADJ 100MA 8SOIC
Reference price
$0.22Add to RFQ list
ADP170AUJZ-1.2-R7
223 purchased
SOT-23-5
RoHS
Datasheet
IC REG LINEAR 1.2V 300MA TSOT5
Reference price
$0.45Add to RFQ list
More sourcing insights
Articles
Jul 3, 2026
How to Read a PCN Without Stopping Your Line: TI and Renesas Case Studies
PCNproduct change notificationelectronics procurementTI
A practical PCN guide for procurement, SQE, IQC, and engineering teams, using real TI and Renesas case studies to show which product change notifications need tracking, validation, or escalation.
Jul 1, 2026
Hall Sensor Selection Guide 2026: A Buyer's Framework for Switch, Latch, Linear, and Current-Sense Designs
Hall sensormagnetic sensorcurrent sensorautomotive electronics
A practical Hall sensor selection guide for buyers and engineers covering switch, latch, linear, and current-sense devices, with representative part numbers, verification boundaries, and sourcing actions.
Jun 29, 2026
Wolfspeed SiC supply continuity 2026: a buyer's framework for second-source qualification
wolfspeedsicsupply-continuitysecond-source
How Wolfspeed's 2026 SiC supply story changes procurement decisions — what to lock-buy, where to qualify a second source, and the MPN-level continuity boundaries that actually matter.