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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsLTC3521IUF#PBF
LTC3521IUF#PBF Image
Image may be representation.
See specifications for product details.

LTC3521IUF#PBF - Analog Devices Inc.

Manufacturer Part Number
LTC3521IUF#PBF
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-LTC3521IUF#PBF
ECAD Model
Parts Description
IC REG BUCK BST ADJ TRPL 24QFN
Detailed Description
Package
24-WFQFN Exposed Pad
Data sheet
Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
In stock: 7420

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Specifications

LTC3521IUF#PBF Tech Specifications
Analog Devices Inc. - LTC3521IUF#PBF technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LTC3521IUF#PBF

Product Attribute Attribute Value  
Manufacturer Analog Devices, Inc.  
Voltage - Output (Min/Fixed) 0.6V  
Voltage - Output (Max) 5.5V  
Voltage - Input (Min) 1.8V  
Voltage - Input (Max) 5.5V  
Topology Buck, Buck-Boost  
Synchronous Rectifier Yes  
Supplier Device Package 24-QFN (4x4)  
Series -  
Package / Case 24-WFQFN Exposed Pad  
Product Attribute Attribute Value  
Package Tube  
Output Type Adjustable  
Output Configuration Positive  
Operating Temperature -40°C ~ 125°C (TJ)  
Number of Outputs 3  
Mounting Type Surface Mount  
Function Step-Down, Step-Up/Step-Down  
Frequency - Switching 1.1MHz  
Current - Output 600mA, 1A  
Base Product Number LTC3521  

Parts Introduction

Manufacturer Part Number

LTC3521IUF#PBF

Manufacturer

analog-devices

Introduction

The LTC3521IUF#PBF is a versatile power management integrated circuit (PMIC) designed for flexible voltage regulation in compact, energy-sensitive applications.

Product Features and Performance

Combines step-down and step-up/step-down functions

Adjustable output spanning from 0.6V to 5.5V

Capable of delivering up to 600mA and 1A for its outputs

High efficiency operation with switching frequency of 1.1MHz

Synchronous rectification for improved efficiency

Operates across a broad input voltage range from 1.8V to 5.5V

Integrated with three output channels

Product Advantages

Flexibility in powering diverse components from a single IC

High efficiency reduces thermal footprint and extends battery life

Compact 24-QFN package saves space on PCB

Capable of handling wide temperature ranges for rugged applications

Key Technical Parameters

Voltage Input (Min): 1.8V

Voltage Input (Max): 5.5V

Voltage Output (Min/Fixed): 0.6V

Voltage Output (Max): 5.5V

Current Output: 600mA, 1A

Frequency Switching: 1.1MHz

Operating Temperature: -40°C ~ 125°C (TJ)

Quality and Safety Features

Built to endure extreme temperature conditions

Synchronous rectification technique enhances power efficiency and safety

Compatibility

Versatile compatibility due to its adjustable output voltage range

Suitable for both step-down and buck-boost applications

Application Areas

Portable devices and battery-powered equipment

Wearables and IoT devices

Energy-efficient and compact electronic applications

Product Lifecycle

Currently active product status

No current indication of discontinuation, ensuring long-term availability

Several Key Reasons to Choose This Product

High flexibility in application due to adjustable voltage outputs

Improves energy efficiency, extending device operational life

Supports both step-down and buck-boost operations, simplifying design

High operating temperature range suits various environments

Compact and space-saving design ideal for constrained applications

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LTC3521IUF#PBF

Product Attribute LTC3521IUF#PBF LTC3522EUD#TRPBF LTC3521IFE#PBF LTC3521IFE#TRPBF
Part Number LTC3521IUF#PBF LTC3522EUD#TRPBF LTC3521IFE#PBF LTC3521IFE#TRPBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Number of Outputs 3 2 3 3
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Synchronous Rectifier Yes Yes Yes Yes
Current - Output 600mA, 1A 200mA, 400mA 600mA, 1A 600mA, 1A
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 85°C (TA) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Topology Buck, Buck-Boost Buck, Buck-Boost Buck, Buck-Boost Buck, Buck-Boost
Voltage - Input (Min) 1.8V 2.4V 1.8V 1.8V
Frequency - Switching 1.1MHz 1.07MHz 1.1MHz 1.1MHz
Function Step-Down, Step-Up/Step-Down Step-Down, Step-Up/Step-Down Step-Down, Step-Up/Step-Down Step-Down, Step-Up/Step-Down
Supplier Device Package 24-QFN (4x4) 16-QFN (3x3) 20-TSSOP-EP 20-TSSOP-EP
Voltage - Input (Max) 5.5V 5.5V 5.5V 5.5V
Voltage - Output (Min/Fixed) 0.6V 0.6V 0.6V 0.6V
Series - - - -
Output Type Adjustable Adjustable Adjustable Adjustable
Voltage - Output (Max) 5.5V 5.5V 5.5V 5.5V
Base Product Number LTC3521 LTC3522 LTC3521 LTC3521
Package Tube Tape & Reel (TR) Tube Tape & Reel (TR)
Package / Case 24-WFQFN Exposed Pad 16-WFQFN Exposed Pad 20-TSSOP (0.173', 4.40mm Width) Exposed Pad 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
Output Configuration Positive Positive Positive Positive

LTC3521IUF#PBF Datasheet PDF

Download LTC3521IUF#PBF pdf datasheets and Analog Devices Inc. documentation for LTC3521IUF#PBF - Analog Devices Inc..

Datasheets
Cylindrical Battery Holders.pdf

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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LTC3521IUF#PBF

Analog Devices Inc.
32D-LTC3521IUF#PBF

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