LT1521IST-3.3#PBF is out of stock and can be placed on backorder.
Available Substitutes:

Parametric Equivalent


Analog Devices Inc.
In Stock: 0
Unit Price: $9.06000
Datasheet

Similar


Microchip Technology
In Stock: 0
Unit Price: $1.38000
Datasheet

Similar


Microchip Technology
In Stock: 0
Unit Price: $1.38000
Datasheet

Similar


Microchip Technology
In Stock: 0
Unit Price: $1.78000
Datasheet

Similar


Microchip Technology
In Stock: 0
Unit Price: $1.78000
Datasheet

Similar


STMicroelectronics
In Stock: 0
Unit Price: $0.32000
Datasheet

Similar


STMicroelectronics
In Stock: 0
Unit Price: $0.34000
Datasheet
Linear Voltage Regulator IC Positive Fixed 1 Output 300mA SOT-223-3
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
Linear Voltage Regulator IC Positive Fixed 1 Output 300mA SOT-223-3
What is a Voltage Regulator Another Teaching Moment | Digi-Key Electronics

LT1521IST-3.3#PBF

DigiKey Part Number
LT1521IST-3.3#PBF-ND
Manufacturer
Manufacturer Product Number
LT1521IST-3.3#PBF
Description
IC REG LIN 3.3V 300MA SOT-223-3
Manufacturer Standard Lead Time
13 Weeks
Customer Reference
Detailed Description
Linear Voltage Regulator IC Positive Fixed 1 Output 300mA SOT-223-3
Datasheet
 Datasheet
EDA/CAD Models
LT1521IST-3.3#PBF Models
Product Attributes
Filter Similar Products
Show Empty Attributes
Category
Current - Quiescent (Iq)
25 µA
Mfr
Current - Supply (Max)
12 mA
Packaging
Tube
PSRR
58dB (120Hz)
Part Status
Active
Control Features
Enable
Output Configuration
Protection Features
Over Current, Over Temperature, Reverse Polarity
Output Type
Operating Temperature
-40°C ~ 125°C
Number of Regulators
1
Mounting Type
Surface Mount
Voltage - Input (Max)
20V
Package / Case
TO-261-4, TO-261AA
Voltage - Output (Min/Fixed)
3.3V
Supplier Device Package
SOT-223-3
Voltage Dropout (Max)
0.75V @ 300mA
Base Product Number
Current - Output
Associated Products
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (7)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
LT1521IST-3.3#TRPBFAnalog Devices Inc.0LT1521IST-3.3#TRPBFTR-ND$9.06000Parametric Equivalent
MIC5200-3.3YSMicrochip Technology0576-1247-ND$1.38000Similar
MIC5200-3.3YS-TRMicrochip Technology0MIC5200-3.3YS-TR-ND$1.38000Similar
MIC5201-3.3YSMicrochip Technology0MIC5201-3.3YS-ND$1.78000Similar
MIC5201-3.3YS-TRMicrochip Technology0576-1251-2-ND$1.78000Similar
In-Stock: 0
78 estimated in stock on 31-Dec-2026
Request Stock Notification
All prices are in USD
Tube
QuantityUnit PriceExt Price
1$9.06000$9.06
10$6.11600$61.16
78$4.61321$359.83
156$4.25981$664.53
312$4.01250$1,251.90
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. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.