LM2575-3.3WU is available for purchase but is not normally stocked.
Available Substitutes:

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Texas Instruments
In Stock: 0
Unit Price: $74.81000
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Unit Price: $56.86000
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Datasheet
Buck Switching Regulator IC Positive Fixed 3.3V 1 Output 1A TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

LM2575-3.3WU

DigiKey Part Number
LM2575-3.3WU-ND
Manufacturer
Manufacturer Product Number
LM2575-3.3WU
Description
IC REG BUCK 3.3V 1A TO263-5
Manufacturer Standard Lead Time
8 Weeks
Customer Reference
Detailed Description
Buck Switching Regulator IC Positive Fixed 3.3V 1 Output 1A TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Datasheet
 Datasheet
EDA/CAD Models
LM2575-3.3WU Models
Product Attributes
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Category
Voltage - Input (Max)
40V
Mfr
Voltage - Output (Min/Fixed)
Packaging
Tube
Current - Output
Part Status
Active
Frequency - Switching
52kHz
Function
Step-Down
Synchronous Rectifier
No
Output Configuration
Positive
Operating Temperature
-40°C ~ 125°C (TJ)
Topology
Mounting Type
Surface Mount
Output Type
Package / Case
Number of Outputs
1
Supplier Device Package
TO-263-5
Voltage - Input (Min)
4V
Base Product Number
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (6)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
LM2592HVS-3.3/NOPBTexas Instruments0LM2592HVS-3.3/NOPB-ND$74.81000Similar
LM2592HVSX-3.3/NOPBTexas Instruments0LM2592HVSX-3.3/NOPBCT-ND$63.39000Similar
LM2596S-3.3/NOPBTexas Instruments0LM2596S-3.3/NOPB-ND$56.86000Similar
LM2596SX-3.3/NOPBTexas Instruments0LM2596SX-3.3/NOPBCT-ND$48.95000Similar
TL2575-33IKTTRTexas Instruments0296-21828-1-ND$21.05000Similar
Available To Order
Check Lead Time
All prices are in HKD
Tube
QuantityUnit PriceExt Price
300$10.85080$3,255.24
Note: Due to DigiKey value-add services the packaging type may change when product is purchased at quantities beneath the standard package.