TL3843BDR is out of stock and can be placed on backorder.
Available Substitutes:

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onsemi
In Stock: 7,500
Unit Price: $0.79000
Datasheet

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onsemi
In Stock: 2,063
Unit Price: $1.30000
Datasheet

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onsemi
In Stock: 0
Unit Price: $1.29000
Datasheet
Boost, Flyback, Forward Regulator Positive Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 14-SOIC
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

TL3843BDR

DigiKey Part Number
296-31947-2-ND - Tape & Reel (TR)
296-31947-1-ND - Cut Tape (CT)
296-31947-6-ND - Digi-Reel®
Manufacturer
Manufacturer Part Number
TL3843BDR
Description
IC REG CTRLR MULT TOP 14SOIC
Manufacturer Standard Lead Time
6 Weeks
Customer Reference
Detailed Description
Boost, Flyback, Forward Regulator Positive Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 14-SOIC
Datasheet
 Datasheet
EDA/CAD Models
TL3843BDR Models
Product Attributes
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Category
Frequency - Switching
Up to 500kHz
Manufacturer
Texas Instruments
Duty Cycle (Max)
96%
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
Synchronous Rectifier
No
Part Status
Active
Clock Sync
No
Output Type
Transistor Driver
Control Features
Frequency Control
Function
Step-Up, Step-Up/Step-Down
Operating Temperature
0°C ~ 70°C (TA)
Output Configuration
Positive
Mounting Type
Surface Mount
Topology
Boost, Flyback, Forward
Package / Case
14-SOIC (0.154", 3.90mm Width)
Number of Outputs
1
Supplier Device Package
14-SOIC
Output Phases
1
Base Product Number
Voltage - Supply (Vcc/Vdd)
7.6V ~ 30V
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (3)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
UC3843BDR2Gonsemi7,500UC3843BDR2GOSTR-ND$0.79000Similar
NCV3843BVDR2Gonsemi2,063488-NCV3843BVDR2GTR-ND$1.30000Similar
UC3843BVDR2Gonsemi0UC3843BVDR2GOSTR-ND$1.29000Similar
In-Stock: 0
2,500 estimated in stock on 30-Nov-2026
Request Stock Notification
All prices are in USD
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1$0.83000$0.83
10$0.59100$5.91
25$0.53160$13.29
100$0.46630$46.63
250$0.43524$108.81
500$0.41646$208.23
1,000$0.40102$401.02
* All Digi-Reel orders will add a $7.00 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
2,500$0.38472$961.80
5,000$0.37489$1,874.45
7,500$0.36997$2,774.78
12,500$0.36452$4,556.50
17,500$0.36133$6,323.27
25,000$0.35827$8,956.75
Tariff Status: Tariff may apply if shipping to the United States. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.