Name: LM2991SX
Brand: Texas Instruments
SKU: LM2991SX
Price: 3.0985 USD
Availability: InStock
Rating: 5 (171 reviews)

LM2991SX

For Reference Only

Part Number	LM2991SX
Manufacturer	Texas Instruments
Description	IC REG LINEAR NEG ADJ 1A DDPAK
Datasheet	LM2991SX Specifications
Package	TO-263-6, D2Pak (5 Leads + Tab), TO-263BA
ECAD
In Stock	3,936 piece(s)
Unit Price	$ 3.0985 *
Lead Time	To be Confirmed
Estimated Delivery Time	May 3 - May 8 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # LM2991SX (PMIC - Voltage Regulators - Linear) is manufactured by Texas Instruments and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

For LM2991SX specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add LM2991SX with quantity into BOM. Heisener.com does NOT require any registration to request a quote of LM2991SX.

LM2991SX Specifications

Manufacturer	Texas Instruments
Category	Integrated Circuits (ICs) - PMIC - Voltage Regulators - Linear
Package	TO-263-6, D2Pak (5 Leads + Tab), TO-263BA
ECAD
Series	-
Output Configuration	Negative
Output Type	Adjustable
Number of Regulators	1
Voltage - Input (Max)	-26V
Voltage - Output (Min/Fixed)	-3V
Voltage - Output (Max)	-24V
Voltage Dropout (Max)	1V @ 1A
Current - Output	1A
Current - Quiescent (Iq)	-
Current - Supply (Max)	0.7mA ~ 5mA
PSRR	60dB (1kHz)
Control Features	Enable
Protection Features	Over Temperature, Short Circuit
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-263-6, D2Pak (5 Leads + Tab), TO-263BA
Supplier Device Package	DDPAK/TO-263-5

LM2991SX Reviews

Bel*****Sur

April 1, 2023

★ ★ ★ ★ ★

So far all the items still work. I'm using these for some home made solar panels and they're doing great.

Con*****Oneal

March 31, 2023

★ ★ ★ ★ ★

Packing good, very happy with goods, Very fast delivery, good service. Thanks

Claud*****ndall

March 8, 2023

★ ★ ★ ★ ★

It's so nice to have all these babies. I was using so many for projects, I decided to buy these. They'll definitely last me a while!

Nico*****arma

March 6, 2023

★ ★ ★ ★ ★

A convenient and small package. I have used 2 of the 10 units so far and they work fine.

Write a Review

★★★★★

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LM2991SX Packaging

LM2991SX FAQ

1. How to order LM2991SX on Heisener?

Currently, Heisener only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
2. How does Heisener guarantee that LM2991SX is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the LM2991SX. All suppliers must pass our qualification reviews before they can publish their products including LM2991SX on Heisener; we pay more attention to the channels and quality of LM2991SX products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the LM2991SX price and inventory displayed accurate?

The price and inventory of LM2991SX fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.
5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of LM2991SX?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LM2991SX we delivered, we will accept the replacement or return of the LM2991SX only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of LM2991SX.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations
7.How to contact us to get technical supports, such as LM2991SX pin diagram, LM2991SX datasheet?

If you need any after-sales service, please do not hesitate to contact us.

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LM2991SX Guarantees

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantees

We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

Global Supply Chains - Reliable and Authorized Distributor Resources

Part Number	Manufacturer	Description	Stock
LM2991SX D# V36:1790_07271140	Texas Instruments	LDO Regulator Neg -3V to -24V 1A Automotive 6-Pin(5+Tab) DDPAK T/R RoHS: Not Compliant	0
LM2991S D# V99:2348_07271138	Texas Instruments	LDO Regulator Neg -3V to -24V 1A Automotive 6-Pin(5+Tab) DDPAK Tube RoHS: Not Compliant	0
LM2991S/NOPB D# V99:2348_07271139	Texas Instruments	LDO Regulator Neg -3V to -24V 1A Automotive 6-Pin(5+Tab) DDPAK Tube	0
LM2991SX/NOPB D# V36:1790_07271141	Texas Instruments	LDO Regulator Neg -3V to -24V 1A Automotive 6-Pin(5+Tab) DDPAK T/R	0

Part Number

Manufacturer

Description

Stock

LM2991S

D# LM2991S

Texas Instruments

LDO Regulator Neg -3V to -24V 1A 6-Pin(5+Tab) TO-263 Rail - Rail/Tube (Alt: LM2991S)

RoHS: Not Compliant

Part Number	Manufacturer	Description	Stock
LM2991S	National Semiconductor Corporation		235
LM2991S/NOPB	National Semiconductor Corporation		15
LM2991SX	National Semiconductor Corporation		955

Part Number	Manufacturer	Description	Stock
LM2991SX/NOPB	Texas Instruments	- Tape and Reel	7440
LM2991S/NOPB	Texas Instruments	IC, REG, LDO, -3 ~ -24V, 1A, TO263	186
LM2991SX	Texas Instruments	- Tape and Reel	7440
LM2991S	Texas Instruments	IC, REG, LDO, -3 ~ -24V, 1A, TO263	186

Part Number

Manufacturer

Description

Stock

LM2991SX/NOPB

Texas Instruments

Adjustable -26V -3V ~ -24V 1V @ 1A TO-263-5 Dropout Regulators(LDO) RoHS

545

LM2991S/NOPB

Texas Instruments

Adjustable -26V -3V ~ -24V 1V @ 1A TO-263-5 Dropout Regulators(LDO) RoHS

751

Part Number

Manufacturer

Description

Stock

LM2991SX

National Semiconductor Corporation

RoHS: Compliant

LM2991S

National Semiconductor Corporation

RoHS: Not Compliant

Part Number

Manufacturer

Description

Stock

LM2991SX/NOPB

National Semiconductor Corporation

RoHS (ship within 1day) - D/C 2010

LM2991SX

National Semiconductor Corporation

N/A (ship within 1day) - D/C 2002+

103

Part Number	Manufacturer	Description	Stock
LM2991S/NOPB D# LM2991S/NOPB-ND	Texas Instruments	IC REG LINEAR NEG ADJ 1A DDPAK	1344
LM2991SX/NOPB D# LM2991SX/NOPBTR-ND	Texas Instruments	IC REG LINEAR NEG ADJ 1A DDPAK	4488
LM2991SX D# 2156-LM2991SX-ND	Rochester Electronics LLC	IC REG LINEAR NEG ADJ 1A DDPAK	21
LM2991S D# LM2991S-ND	Texas Instruments	IC REG LINEAR NEG ADJ 1A DDPAK	0

Part Number

Manufacturer

Description

Stock

LM2991S

D# LM2991S

National Semiconductor Corporation

Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct

4089

LM2991SX

D# LM2991SX

National Semiconductor Corporation

2792

Part Number

Manufacturer

Description

Stock

LM2991S

National Semiconductor Corporation

In stock shipping within 2days

5081

LM2991SX

National Semiconductor Corporation

In stock shipping within 2days

5081

Part Number

Manufacturer

Description

Stock

LM2991S/NOPB

D# 3122093

Texas Instruments

IC, REG, LDO, -3 ~ -24V, 1A, TO263

RoHS: Compliant

Min Qty: 1

Container: Each

577

LM2991SX/NOPB

D# 3122094

Texas Instruments

ADJUSTABLE LDO VOLTAGE REGULATOR, -2V TO

RoHS: Compliant

Min Qty: 1

Container: Cut Tape

111

Part Number

Manufacturer

Description

Stock

LM2991S

National Semiconductor Corporation

Stock

169

Part Number

Manufacturer

Description

Stock

LM2991S

NEW AND ORGINAL. ISRAEL W.HOUSE

Part Number	Manufacturer	Description	Stock
LM2991S	National Semiconductor Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	29012
LM2991SXND	DIGIKEY	OEM/CM QUOTES ONLY \| NO BROKERS	81
LM2991SXNOPB	TEXAS INSTRUMENTS	OEM/CM QUOTES ONLY \| NO BROKERS	4060
LM2991SXTRND	National Semiconductor Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	197
LM2991SX	National Semiconductor Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	3480

Part Number	Manufacturer	Description	Stock
LM2991SXNOPB	Texas Instruments	OEM/CM ONLY	666
LM2991SX	Texas Instruments	OEM/CM ONLY	110
LM2991S	Texas Instruments	OEM/CM ONLY	634

Part Number

Manufacturer

Description

Stock

LM2991SX

National Semiconductor Corporation

in stock - can ship the same day

LM2991S

National Semiconductor Corporation

in stock - can ship the same day

Part Number	Manufacturer	Description	Stock
LM2991SX/NOPB	Texas Instruments	OEM/CM Immediate delivery	2500
LM2991S	National Semiconductor Corporation	OEM/CM Immediate delivery	276
LM2991S/NOPB	National Semiconductor Corporation	OEM/CM Immediate delivery	263
LM2991SX	National Semiconductor Corporation	OEM/CM Immediate delivery	8000

Part Number	Manufacturer	Description	Stock
LM2991S D# 926-LM2991S	Texas Instruments	LDO Voltage Regulators Neg LDO Adj Reg RoHS: Not Compliant	110
LM2991S/NOPB D# 926-LM2991S/NOPB	Texas Instruments	LDO Voltage Regulators NEG LDO ADJ REG RoHS: Compliant	1084
LM2991SX/NOPB D# 926-LM2991SX/NOPB	Texas Instruments	LDO Voltage Regulators NEG LDO ADJ REG RoHS: Compliant	872

Part Number

Manufacturer

Description

Stock

LM2991S/NOPB

D# 41K4638

Texas Instruments

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

RoHS: Compliant

Min Qty: 225

Container: Bulk

LM2991SX/NOPB

D# 31AH1982

Texas Instruments

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

RoHS: Compliant

Min Qty: 1

Container: Cut Tape

111

Part Number	Manufacturer	Description	Stock
LM2991SX/NOPB D# NS-LM2991SX/NOPB	Texas Instruments	OEM/CM ONLY	4194
LM2991S D# NS-LM2991S	Texas Instruments	OEM/CM ONLY	7418
LM2991S/NOPB D# NS-LM2991S/NOPB	Texas Instruments	OEM/CM ONLY	2468
LM2991SX D# NS-LM2991SX	National Semiconductor Corporation	OEM/CM ONLY	6685

Part Number	Manufacturer	Description	Stock
LM2991S/NOPB	National Semiconductor Corporation	3 V-24 V ADJUSTABLE NEGATIVE LDO REGULATOR, 1 V DROPOUT, PSSO5	29
LM2991SX	National Semiconductor Corporation	3 V-24V ADJUSTABLE NEGATIVE LDO REGULATOR, 1V DROPOUT, PSSO5	522
LM2991SXTR-ND	National Semiconductor Corporation		104
LM2991S	National Semiconductor Corporation	Voltage Regulator, Adjustable, -2 TO -25V, Bi-Polar, 5 Pin, Plastic, SIP	906
LM2991SX/NOPB	National Semiconductor Corporation	2 V-25 V ADJUSTABLE NEGATIVE LDO REGULATOR, 1 V DROPOUT, PSSO5	14

Part Number

Manufacturer

Description

Stock

LM2991S

D# LM2991S

National Semiconductor Corporation

Semiconductor

LM2991SX

D# LM2991SX

National Semiconductor Corporation

Semiconductor

1799

Part Number

Manufacturer

Description

Stock

LM2991S/NOPB

D# 5338170

Texas Instruments

Texas Instruments LM2991S/NOPB, LDO Regulator, 1A Adjustable, -24 -3 V 5-Pin, D2PAK, EA

Min Qty: 1

Container: Bulk

143

LM2991SX/NOPB

D# 2088562

Texas Instruments

Texas Instruments LM2991SX/NOPB, LDO Voltage Regulator, 1A Adjustable, (- 3 V to - 24 V) V, 5% 3-Pin, D2PAK, RL

Min Qty: 500

Container: Reel

485

Part Number	Manufacturer	Description	Stock
LM2991S/NOPB	National Semiconductor Corporation	LM2991 Negative Low Dropout Adjustable Regulator RoHS: Compliant	7
LM2991SX/NOPB	National Semiconductor Corporation	LM2991 Negative Low Dropout Adjustable Regulator RoHS: Compliant	61
LM2991SX	National Semiconductor Corporation	LM2991 Negative Low Dropout Adjustable Regulator RoHS: Not Compliant	21
LM2991S	Texas Instruments	LM2991 Negative Low Dropout Adjustable Regulator RoHS: Not Compliant	90

Part Number	Manufacturer	Description	Stock
LM2991S	National Semiconductor Corporation	OEM/CM ONLY	10910
LM2991SXND	OEM Automatic Ltd	OEM/CM ONLY	86
LM2991SX	National Semiconductor Corporation	OEM/CM ONLY	11642
LM2991SX/NOPB	National Semiconductor Corporation	OEM/CM ONLY	2355
LM2991SXTRND	National Semiconductor Corporation	OEM/CM ONLY	186

Part Number	Manufacturer	Description	Stock
LM2991SX/NOPB	Texas Instruments	IN stock Immediate delivery	2515
LM2991S	National Semiconductor Corporation	IN stock Immediate delivery	271
LM2991S/NOPB	National Semiconductor Corporation	IN stock Immediate delivery	258
LM2991SX	National Semiconductor Corporation	IN stock Immediate delivery	8015

Part Number

Manufacturer

Description

Stock

LM2991S

Texas Instruments

LM2991S/NOPB

Texas Instruments

Part Number

Manufacturer

Description

Stock

LM2991S

D# 2028024818

National Semiconductor Corporation

LM2991S NSC Transistor

331

Part Number

Manufacturer

Description

Stock

LM2991SX/NOPB

Texas Instruments

1-A, negative, adjustable low-dropout voltage regulator with enable

LM2991S/NOPB

Texas Instruments

1-A, negative, adjustable low-dropout voltage regulator with enable

Part Number	Manufacturer	Description	Stock
LM2991SX	STMicroelectronics	shipping today	16
LM2991S	National Semiconductor Corporation	shipping today	7626
LM2991S/NOPB	STMicroelectronics	shipping today	3496
LM2991SX/NOPB	Texas Instruments	shipping today	996

Part Number

Manufacturer

Description

Stock

LM2991S

D# 53483567

Texas Instruments

LDO Regulator Neg -3V to -24V 1A Automotive 6-Pin(5+Tab) DDPAK Tube

RoHS: Not Compliant

Part Number	Manufacturer	Description	Stock
LM2991S	National Semiconductor Corporation	RFQ	14383
LM2991SX	mfr	RFQ	1613
LM2991S/NOPB	Texas Instruments	RFQ	3220

Part Number

Manufacturer

Description

Stock

LM2991SX

Texas Instruments

IC REG LDO NEG ADJ 1A DDPAK

1338

LM2991S

Texas Instruments

IC REG LDO NEG ADJ 1A DDPAK

1757

Part Number

Manufacturer

Description

Stock

LM2991SX/NOPB

D# 3122094

Texas Instruments

ADJUSTABLE LDO VOLTAGE REGULATOR, -2V TO

RoHS: Compliant

Min Qty: 1

Container: Cut Tape

111

LM2991S/NOPB

D# 3122093

Texas Instruments

IC, REG, LDO, -3 ~ -24V, 1A, TO263

RoHS: Compliant

Min Qty: 1

Container: Each

626

Quick Inquiry

LM2991SX

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