UC3844BD1 is out of stock and can be placed on backorder.
Available Substitutes:

Direct


Microchip Technology
In Stock: 2,890
Unit Price: $7.51000
Datasheet

Direct


Texas Instruments
In Stock: 3,496
Unit Price: $0.97000
Datasheet

Direct


Texas Instruments
In Stock: 3,379
Unit Price: $0.97000
Datasheet

Direct


Texas Instruments
In Stock: 2,860
Unit Price: $1.18000
Datasheet

Direct


Texas Instruments
In Stock: 2,481
Unit Price: $0.86000
Datasheet

Direct


Texas Instruments
In Stock: 1,001
Unit Price: $1.12000
Datasheet

Direct


Texas Instruments
In Stock: 701
Unit Price: $1.75000
Datasheet

Direct


Texas Instruments
In Stock: 0
Unit Price: $1.05336
Datasheet

Upgrade


Texas Instruments
In Stock: 1,930
Unit Price: $1.72000
Datasheet

Upgrade


Texas Instruments
In Stock: 196
Unit Price: $1.61000
Datasheet

Similar


Texas Instruments
In Stock: 22,152
Unit Price: $1.12000
Datasheet

Similar


Texas Instruments
In Stock: 3,819
Unit Price: $19.35000
Datasheet

Similar


Texas Instruments
In Stock: 3,209
Unit Price: $0.54000
Datasheet

Similar


Texas Instruments
In Stock: 2,317
Unit Price: $5.73000
Datasheet
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

UC3844BD1

DigiKey Part Number
497-18661-ND
Manufacturer
Manufacturer Product Number
UC3844BD1
Description
IC REG CTRLR BST FLYBK ISO 8-SO
Manufacturer Standard Lead Time
52 Weeks
Customer Reference
Detailed Description
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Datasheet
 Datasheet
EDA/CAD Models
UC3844BD1 Models
Product Attributes
Filter Similar Products
Show Empty Attributes
Category
Frequency - Switching
Up to 500kHz
Manufacturer
STMicroelectronics
Duty Cycle (Max)
48%
Packaging
Tube
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 (TJ)
Output Configuration
Positive, Isolation Capable
Mounting Type
Surface Mount
Topology
Boost, Flyback
Package / Case
8-SOIC (0.154", 3.90mm Width)
Number of Outputs
1
Supplier Device Package
8-SOIC
Output Phases
1
Base Product Number
Voltage - Supply (Vcc/Vdd)
10V ~ 30V
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (16)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
UC3845ADM-TRMicrochip Technology2,890UC3845ADM-TRTR-ND$7.51000Direct
UC3844AD8TRTexas Instruments3,496296-39523-2-ND$0.97000Direct
UC3845AD8TRTexas Instruments3,379296-27153-2-ND$0.97000Direct
UC3845D8Texas Instruments2,8602156-UC3845D8-ND$1.18000Direct
UC3845D8TRTexas Instruments2,481296-38313-2-ND$0.86000Direct
In-Stock: 0
100 expected in stock on 11-Nov-2026
Request Stock Notification
All prices are in USD
Tube
QuantityUnit PriceExt Price
1$0.96000$0.96
10$0.68700$6.87
25$0.61920$15.48
100$0.54470$54.47
300$0.50317$150.95
500$0.48780$243.90
1,000$0.47019$470.19
2,500$0.45159$1,128.97
5,000$0.44038$2,201.90
Note: Due to DigiKey value-add services the packaging type may change when product is purchased at quantities beneath the standard package.
Tariff Status: Tariff may apply if shipping to the United States. Tariff costs are calculated and will be displayed in the shopping cart.