Buck Switching Regulator IC Positive Adjustable 0.97V 1 Output 5A 20-WFQFN Exposed Pad, 18 Leads
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LT8640AJUDCM#TRPBF

DigiKey Part Number
505-LT8640AJUDCM#TRPBFTR-ND - Tape & Reel (TR)
505-LT8640AJUDCM#TRPBFCT-ND - Cut Tape (CT)
505-LT8640AJUDCM#TRPBFDKR-ND - Digi-Reel®
Manufacturer
Manufacturer Product Number
LT8640AJUDCM#TRPBF
Description
IC REG BUCK ADJ 5A 20QFN
Manufacturer Standard Lead Time
13 Weeks
Customer Reference
Detailed Description
Buck Switching Regulator IC Positive Adjustable 0.97V 1 Output 5A 20-WFQFN Exposed Pad, 18 Leads
Datasheet
 Datasheet
EDA/CAD Models
LT8640AJUDCM#TRPBF Models
Product Attributes
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Category
Voltage - Input (Max)
42V
Mfr
Voltage - Output (Min/Fixed)
Series
Voltage - Output (Max)
41.58V
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
Current - Output
Part Status
Active
Frequency - Switching
200kHz ~ 3MHz
Function
Step-Down
Synchronous Rectifier
Yes
Output Configuration
Positive
Operating Temperature
-40°C ~ 150°C (TJ)
Topology
Mounting Type
Surface Mount, Wettable Flank
Output Type
Package / Case
Number of Outputs
1
Supplier Device Package
20-QFN (3x4)
Voltage - Input (Min)
2.9V
Base Product Number
Associated Products
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
In-Stock: 0
2,133 expected in stock on 02-Dec-2026
367 expected in stock on 03-Dec-2026
Request Stock Notification
All prices are in USD
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1$8.12000$8.12
10$6.28100$62.81
25$5.82240$145.56
100$5.31830$531.83
250$5.18672$1,296.68
* All Digi-Reel orders will add a $7.00 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
2,500$4.68800$11,720.00
Tariff Status: Tariff may apply if shipping to the United States. Tariff costs are calculated and will be displayed in the shopping cart.