Name: LM3940IS-3.3
Brand: Texas Instruments
SKU: LM3940IS-3-3
Price: 2.8231 USD
Availability: InStock
Rating: 5 (111 reviews)

LM3940IS-3.3

For Reference Only

Part Number	LM3940IS-3.3
Manufacturer	Texas Instruments
Description	IC REG LIN 3.3V 1A DDPAK/TO263-3
Datasheet	LM3940IS-3.3 Specifications
Package	TO-263-4, D2Pak (3 Leads + Tab), TO-263AA
ECAD
In Stock	762,744 piece(s)
Unit Price	$ 2.8231 *
Lead Time	Can Ship Immediately
Estimated Delivery Time	Apr 27 - May 2 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # LM3940IS-3.3 (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 LM3940IS-3.3 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add LM3940IS-3.3 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of LM3940IS-3.3.

LM3940IS-3.3 Specifications

Manufacturer	Texas Instruments
Category	Integrated Circuits (ICs) - PMIC - Voltage Regulators - Linear
Package	TO-263-4, D2Pak (3 Leads + Tab), TO-263AA
ECAD
Series	-
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	7.5V
Voltage - Output (Min/Fixed)	3.3V
Voltage - Output (Max)	-
Voltage Dropout (Max)	0.2V @ 100mA
Current - Output	1A
Current - Quiescent (Iq)	-
Current - Supply (Max)	15mA
PSRR	-
Control Features	-
Protection Features	Over Temperature, Short Circuit
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-263-4, D2Pak (3 Leads + Tab), TO-263AA
Supplier Device Package	DDPAK/TO-263-3

LM3940IS-3.3 Reviews

Pip*****Carey

April 1, 2023

★ ★ ★ ★ ★

Good seller, incredible reliable.Item as described. Very professional

Aya*****Kim

March 22, 2023

★ ★ ★ ★ ★

These function just as well. You do need to spend some time modifying the harness, but no big deal.

Frank*****adhwa

March 20, 2023

★ ★ ★ ★ ★

I'm so sure that you're beating your competitor on delivery!

Noo*****rock

March 17, 2023

★ ★ ★ ★ ★

On time and as described, fast delivery. Would definitely buy again. Thx.

Dahl*****ullock

March 10, 2023

★ ★ ★ ★ ★

Absolutely awesome, quick delivery, perfect product exactly as described!

Alexza*****dwards

March 7, 2023

★ ★ ★ ★ ★

I was able to make my list of needed parts and use suggested relative selection. The five stars represent the fact they show inventory quantity. So far i'm happy.

Romin*****livan

March 2, 2023

★ ★ ★ ★ ★

I've made a few purchases from Heisener and always get a friendly technician helped me with locate what I was looking for. That kind of attitude is greatly appreciated.

Este*****Dhawan

February 19, 2023

★ ★ ★ ★ ★

This product works great what more can I say.

Write a Review

★★★★★

Not Rated

Thanks for Your Review!

LM3940IS-3.3 Packaging

LM3940IS-3.3 FAQ

1. How to order LM3940IS-3.3 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 LM3940IS-3.3 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the LM3940IS-3.3. All suppliers must pass our qualification reviews before they can publish their products including LM3940IS-3.3 on Heisener; we pay more attention to the channels and quality of LM3940IS-3.3 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the LM3940IS-3.3 price and inventory displayed accurate?

The price and inventory of LM3940IS-3.3 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 LM3940IS-3.3?

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 LM3940IS-3.3 we delivered, we will accept the replacement or return of the LM3940IS-3.3 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 LM3940IS-3.3.

(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 LM3940IS-3.3 pin diagram, LM3940IS-3.3 datasheet?

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

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LM3940IS-3.3 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
LM3940IS-3.3/NOPB D# V99:2348_07275602	Texas Instruments	LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK Tube	0
LM3940IS-3.3 D# V36:1790_07275601	Texas Instruments	LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK Tube RoHS: Not Compliant	0
LM3940ISX-3.3/NOPB D# V72:2272_07275604	Texas Instruments	LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK T/R	0

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3/NOPB

D# LM3940IS-3.3/NOPB

Texas Instruments

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) TO-263 Rail - Rail/Tube (Alt: LM3940IS-3.3/NOPB)

RoHS: Compliant

LM3940IS-3.3

D# LM3940IS-3.3

Texas Instruments

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) TO-263 Rail - Rail/Tube (Alt: LM3940IS-3.3)

RoHS: Not Compliant

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3/NOPB	National Semiconductor Corporation		246
LM3940IS-3.3	National Semiconductor Corporation		325
LM3940IS-3.3P/NOPB	National Semiconductor Corporation		20
LM3940IS33NOPB	National Semiconductor Corporation		39
LM3940IS-3.3P+	National Semiconductor Corporation		140
LM3940ISX-3.3/NOPB	National Semiconductor Corporation		562

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3	Texas Instruments	IC, V REG, LINEAR, 3.3V	3732
LM3940IS-3.3/NOPB	Texas Instruments	IC, V REG, LINEAR, 3.3V	3732
LM3940ISX-3.3/NOPB	Texas Instruments	LDO VOLT REG, 1A, 3.3V, TO-263-3	2500

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

Texas Instruments

Fixed 7.5V 3.3V 1V @ 1A TO-263-3 Dropout Regulators(LDO) RoHS

Part Number

Manufacturer

Description

Stock

LM3940IS33

National Semiconductor Corporation

RoHS: Not Compliant

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3/NOPB	National Semiconductor Corporation	RoHS (ship within 1day) - D/C 2010	103
LM3940ISX-3.3/NOPB	National Semiconductor Corporation	RoHS (ship within 1day) - D/C 2005+	1925
LM3940IS-3.3	Texas Instruments	ship within 1day - D/C	34

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3/NOPB D# LM3940ISX-3.3/NOPBTR-ND	Texas Instruments	IC REG LIN 3.3V 1A DDPAK/TO263-3	2326
LM3940IS-3.3 D# LM3940IS-3.3-ND	Texas Instruments	IC REG LIN 3.3V 1A DDPAK/TO263-3	480
LM3940IS-3.3/NOPB D# LM3940IS-3.3/NOPB-ND	Texas Instruments	IC REG LIN 3.3V 1A DDPAK/TO263-3	1601

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3

D# LM3940IS-3.3

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

1098

LM3940IS-3.3/NOPB

D# LM3940IS-3.3/NOPB

National Semiconductor Corporation

2276

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3/NOPB	TINS	In stock shipping within 2days	1507
LM3940IS-3.3/NOPB	National Semiconductor Corporation	In stock shipping within 2days	150
LM3940IS-3.3	National Semiconductor Corporation	In stock shipping within 2days	35525

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3/NOPB D# 3007562	Texas Instruments	LDO, FIXED, 3.3V, 1A, TO-263-3 RoHS: Compliant Min Qty: 1 Container: Cut Tape	129
LM3940IS-3.3/NOPB D# 3122101	Texas Instruments	IC, V REG, LINEAR, 3.3V RoHS: Compliant Min Qty: 1 Container: Each	233
LM3940IS-3.3/NOPB . D# 1469105	Texas Instruments	IC, V REG, LINEAR, 3.3V RoHS: Compliant Min Qty: 1 Container: Each	0

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3NOPB

NEW AND ORGINAL. ISRAEL W.HOUSE

LM3940ISX-3.3/NOPB

National Semiconductor Corporation

NEW AND ORGINAL. ISRAEL W.HOUSE

955

Part Number	Manufacturer	Description	Stock
LM3940IS33PT		OEM/CM QUOTES ONLY \| NO BROKERS	6
LM3940IS33NOB	National Semiconductor Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	522
LM3940IS33P		OEM/CM QUOTES ONLY \| NO BROKERS	162
LM3940IS33	Sipex Corp	OEM/CM QUOTES ONLY \| NO BROKERS	16435
LM3940IS33NOPB	TEXAS INSTRUMENTS	OEM/CM QUOTES ONLY \| NO BROKERS	1592
LM3940IS33PNOPB	National Semiconductor Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	23

Part Number	Manufacturer	Description	Stock
LM3940IS33NO	Texas Instruments	OEM/CM ONLY	110
LM3940IS33NOP	Texas Instruments	OEM/CM ONLY	708
LM3940IS33TR	Texas Instruments	OEM/CM ONLY	1397
LM3940IS33	Texas Instruments	OEM/CM ONLY	590
LM3940IS33LM3940IS33NOPB	Texas Instruments	OEM/CM ONLY	157
LM3940IS33NOPB	Texas Instruments	OEM/CM ONLY	459
LM3940IS33LM3940ISX3	Texas Instruments	OEM/CM ONLY	542
LM3940IS33ROHS	Texas Instruments	OEM/CM ONLY	462

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3/NOPB	National Semiconductor Corporation	In stock	562
LM3940IS-3.3	National Semiconductor Corporation	In stock	355
LM3940IS-3.3/NOPB	Texas Instruments	In stock	11
LM3940IS-3.3P/NOPB	National Semiconductor Corporation	In Stock	20

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3NOPB

National Semiconductor Corporation

in stock - can ship the same day

LM3940IS-3.3

National Semiconductor Corporation

in stock - can ship the same day

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3

National Semiconductor Corporation

OEM/CM Immediate delivery

852

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3/NOPB D# 926-LM3940ISX3.3NOPB	Texas Instruments	LDO Voltage Regulators 1A LDO REG RoHS: Compliant	41
LM3940IS-3.3 D# 926-LM3940IS-33	Texas Instruments	LDO Voltage Regulators RoHS: Not Compliant	45
LM3940IS-3.3/NOPB D# 926-LM3940IS-3.3NOPB	Texas Instruments	LDO Voltage Regulators 1A LDO REG RoHS: Compliant	603

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

D# 29AH6337

Texas Instruments

LDO, FIXED, 3.3V, 1A, TO-263-3, Output Type:Fixed, Input Voltage Min:4.5V, Input Voltage Max:5.5V, Fixed Output Voltage Nom.:3.3V, Adjustable Output Voltage Min:-, Adjustable Output Voltage Max:-, Output Current:1A, Dropout Voltage RoHS Compliant: Yes

RoHS: Compliant

Min Qty: 1

Container: Cut Tape

129

LM3940IS-3.3/NOPB

D# 41K5124

Texas Instruments

LDO VOLTAGE REGULATOR, 3.3V, 1A, TO-263, Output Type:Fixed, Input Voltage Min:0V, Input Voltage Max:7.5V, Fixed Output Voltage Nom.:3.3V, Adjustable Output Voltage Min:-, Adjustable Output Voltage Max:-, Output Current:1A RoHS Compliant: Yes

RoHS: Compliant

Min Qty: 1

Container: Bulk

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3 D# NS-LM3940IS-3.3	Texas Instruments	OEM/CM ONLY	1614
LM3940IS-3.3/NOPB D# NS-LM3940IS-3.3/NOPB	Texas Instruments	OEM/CM ONLY	2348
LM3940IS-3.3+ D# NS-LM3940IS-3.3+	National Semiconductor Corporation	OEM/CM ONLY	5067
LM3940IS3.3 D# NS-LM3940IS3.3	National Semiconductor Corporation	OEM/CM ONLY	1136
LM3940ISX-3.3/NOPB D# NS-LM3940ISX-3.3/NOPB	Texas Instruments	OEM/CM ONLY	6021

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3	National Semiconductor Corporation	Voltage Regulator, +3.3V, Bi-Polar, 3 Pin, Plastic, SIP	219
LM3940IS-3.3/NOPB	National Semiconductor Corporation	3.3 V FIXED POSITIVE LDO REGULATOR, 1 V DROPOUT, PSSO3	17
LM3940IS-3.3P+	National Semiconductor Corporation		18
LM3940ISX-3.3/NOPB	National Semiconductor Corporation	3.3V FIXED POSITIVE LDO REGULATOR, 1V DROPOUT, PSSO3	443

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3

D# LM3940IS-3dot3

National Semiconductor Corporation

Semiconductor

210

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3/NOPB

D# 1977283

Texas Instruments

Texas Instruments LM3940IS-3.3/NOPB, LDO Voltage Regulator, 1A Adjustable, 3.3 V, 2.5% 3-Pin, D2PAK, TU

Min Qty: 45

Container: Tube

145

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

National Semiconductor Corporation

LM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion

RoHS: Compliant

18945

LM3940IS-3.3/NOPB

National Semiconductor Corporation

LM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion

RoHS: Compliant

4034

Part Number	Manufacturer	Description	Stock
LM3940IS3.3NOPB	National Semiconductor Corporation	OEM/CM ONLY	1487
LM3940IS33P	National Semiconductor Corporation	OEM/CM ONLY	607
LM3940IS33	National Semiconductor Corporation	OEM/CM ONLY	34281
LM3940IS3.3/NOB	National Semiconductor Corporation	OEM/CM ONLY	466

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3

National Semiconductor Corporation

IN stock Immediate delivery

847

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

Texas Instruments

1-A, low-dropout voltage regulator for 5-V to 3.3-V conversion

LM3940IS-3.3/NOPB

Texas Instruments

1-A, low-dropout voltage regulator for 5-V to 3.3-V conversion

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3	National Semiconductor Corporation	shipping today	12496
LM3940IS-3.3V	National Semiconductor Corporation	shipping today	803
LM3940ISX-3.3/NOPB	Texas Instruments	shipping today	6

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

D# 52710759

Texas Instruments

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK T/R

LM3940IS-3.3/NOPB

D# 53705262

Texas Instruments

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK Tube

Part Number	Manufacturer	Description	Stock
LM3940IS33P	National Semiconductor/Texas Instruments	RFQ	553
LM3940IS-3.3	mfr	RFQ	10410
LM3940IS-3.3+	Texas Instruments	RFQ	4055
LM3940IS-3.3/NOPB	Texas Instruments	RFQ	2151

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

Texas Instruments

IC REG LDO 3.3V 1A DDPAK

3358

LM3940IS-3.3

Texas Instruments

IC REG LDO 3.3V 1A DDPAK

870

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3/NOPB D# 3007562	Texas Instruments	LDO, FIXED, 3.3V, 1A, TO-263-3 RoHS: Compliant Min Qty: 1 Container: Cut Tape	129
LM3940IS-3.3/NOPB D# 3122101	Texas Instruments	IC, V REG, LINEAR, 3.3V RoHS: Compliant Min Qty: 1 Container: Each	543
LM3940IS-3.3/NOPB . D# 1469105	Texas Instruments	IC, V REG, LINEAR, 3.3V RoHS: Compliant Min Qty: 1 Container: Each	1

Quick Inquiry

LM3940IS-3.3

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