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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsA4490EESTR-T
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A4490EESTR-T - Allegro MicroSystems

Manufacturer Part Number
A4490EESTR-T
Manufacturer
Allegro MicroSystems
Allelco Part Number
32D-A4490EESTR-T
ECAD Model
Parts Description
IC REG BUCK ADJ TRPL 20QFN
Package
20-WFQFN Exposed Pad
Data sheet
A4490.pdf
RoHs Status
ROHS3 Compliant
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Specifications

A4490EESTR-T Tech Specifications
Allegro MicroSystems - A4490EESTR-T technical specifications, attributes, parameters and parts with similar specifications to Allegro MicroSystems - A4490EESTR-T

Product Attribute Attribute Value  
Manufacturer Allegro MicroSystems  
Voltage - Output (Min/Fixed) 0.8V  
Voltage - Output (Max) 30.6V  
Voltage - Input (Min) 4.5V  
Voltage - Input (Max) 34V  
Topology Buck  
Synchronous Rectifier No  
Supplier Device Package 20-QFN-EP (4x4)  
Series -  
Package / Case 20-WFQFN Exposed Pad  
Product Attribute Attribute Value  
Package Tape & Reel (TR)  
Output Type Adjustable  
Output Configuration Positive  
Operating Temperature -40°C ~ 85°C (TA)  
Number of Outputs 3  
Mounting Type Surface Mount  
Function Step-Down  
Frequency - Switching 550kHz  
Current - Output -  
Base Product Number A4490  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

A4490EESTR-T

Manufacturer

Allegro Microsystems

Introduction

A high-efficiency step-down DC-DC switching regulator

Product Features and Performance

Adjustable output voltage from 0.8V to 30.6V

Input voltage range from 4.5V to 34V

Three output channels for multi-output voltage requirements

Buck topology for efficient down-converting

Functioning without a synchronous rectifier

Supports 550kHz switching frequency

Product Advantages

Highly efficient power conversion

Wide input voltage range catering to various applications

Flexible output voltage adjustment for diverse uses

Surface mount technology compatible for modern circuit boards

Multi-output capability reducing component count

Key Technical Parameters

Topology: Buck

Adjustable output voltage range: 0.8V to 30.6V

Input voltage range: 4.5V to 34V

Switching frequency: 550kHz

Operating temperature range: -40°C to 85°C

Quality and Safety Features

Built for operating in extreme temperature conditions

Robust surface mount package for secure PCB mounting

Compatibility

Surface Mount compatible with 20-WFQFN Exposed Pad

20-QFN-EP (4x4) device packaging suitable for various PCB designs

Application Areas

Consumer electronics

Industrial power systems

Automotive industry

Communication equipment

Computing devices

Product Lifecycle

Product status: Active

Not indicated as nearing discontinuation

Potential future availability of replacements or upgrades not explicitly stated

Several Key Reasons to Choose This Product

Wide input voltage range allows for use in variable power environments

Adjustable output voltage provides design flexibility

The ability to supply multiple voltages with three outputs simplifies power design

High efficiency reduces thermal issues and maximizes battery life

Surface mounting technology aligns with modern electronic production standards

Operates effectively across a broad temperature range, enhancing reliability in demanding conditions

Parts with Similar Specifications

The three parts on the right have similar specifications to Allegro MicroSystems A4490EESTR-T

Product Attribute A4490EESTR-T A4447SLJTR-T A4492EESTR-T A4491EESTR-T
Part Number A4490EESTR-T A4447SLJTR-T A4492EESTR-T A4491EESTR-T
Manufacturer Allegro MicroSystems Allegro MicroSystems Allegro MicroSystems Allegro MicroSystems
Voltage - Output (Max) 30.6V 24V 30.6V 20.7V
Voltage - Output (Min/Fixed) 0.8V 0.8V 0.8V 0.8V
Synchronous Rectifier No No No No
Package / Case 20-WFQFN Exposed Pad 8-SOIC (0.154", 3.90mm Width) Exposed Pad 20-WFQFN Exposed Pad 20-WFQFN Exposed Pad
Output Configuration Positive Positive Positive Positive
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Series - - - -
Base Product Number A4490 A4447 A4492 A4491
Current - Output - 2A - -
Function Step-Down Step-Down Step-Down Step-Down
Supplier Device Package 20-QFN-EP (4x4) 8-SOIC-EP 20-QFN-EP (4x4) 20-QFN-EP (4x4)
Package Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR)
Voltage - Input (Min) 4.5V 8V 4.5V 4.5V
Operating Temperature -40°C ~ 85°C (TA) -20°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA)
Topology Buck Buck Buck Buck
Voltage - Input (Max) 34V 50V 34V 23V
Output Type Adjustable Adjustable Adjustable Adjustable
Frequency - Switching 550kHz - 550kHz 550kHz
Number of Outputs 3 1 3 3

A4490EESTR-T Datasheet PDF

Download A4490EESTR-T pdf datasheets and Allegro MicroSystems documentation for A4490EESTR-T - Allegro MicroSystems.

PCN Packaging
Tape Change 27/Jan/2023.pdf
HTML Datasheet
A4490.pdf

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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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A4490EESTR-T Image

A4490EESTR-T

Allegro MicroSystems
32D-A4490EESTR-T

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