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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching ControllersLT3781IG
LT3781IG Image
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See specifications for product details.

LT3781IG - Analog Devices Inc.

Manufacturer Part Number
LT3781IG
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-LT3781IG
ECAD Model
Parts Description
IC REG CTRLR FWRD CONV 20SSOP
Detailed Description
Package
20-SSOP (0.209', 5.30mm Width)
Data sheet
Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
In stock: 1740

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Quantity

Specifications

LT3781IG Tech Specifications
Analog Devices Inc. - LT3781IG technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LT3781IG

Product Attribute Attribute Value  
Manufacturer Analog Devices, Inc.  
Voltage - Supply (Vcc/Vdd) 9V ~ 18V  
Topology Forward Converter  
Synchronous Rectifier No  
Supplier Device Package 20-SSOP  
Series -  
Serial Interfaces -  
Package / Case 20-SSOP (0.209', 5.30mm Width)  
Package Tube  
Output Type Transistor Driver  
Output Phases 1  
Product Attribute Attribute Value  
Output Configuration Positive, Isolation Capable  
Operating Temperature -40°C ~ 85°C (TA)  
Number of Outputs 1  
Mounting Type Surface Mount  
Function Step-Up/Step-Down  
Frequency - Switching 700kHz  
Duty Cycle (Max) -  
Control Features Enable, Soft Start  
Clock Sync Yes  
Base Product Number LT3781  

Parts Introduction

Manufacturer Part Number

LT3781IG

Manufacturer

Analog Devices

Introduction

The LT3781IG is a versatile power management integrated circuit (PMIC) designed for DC-DC switching control, capable of step-up and step-down functions.

Product Features and Performance

Versatile step-up/step-down functionality

Supports positive output configuration with isolation capability

Utilizes forward converter topology

Single output with one-phase operation

Operates on a supply voltage ranging from 9V to 18V

Features a 700kHz switching frequency

Incorporates clock synchronization

Equipped with Enable and Soft Start control features

Designed for surface mount technology

Product Advantages

Flexibility in handling both step-up and step-down voltage conversions

Ability to achieve isolated output configurations

High-efficiency design due to optimized topology

Simplified system design with integrated clock synchronization

Enhanced operational reliability with soft start functionality

Key Technical Parameters

Voltage Supply (Vcc/Vdd): 9V ~ 18V

Frequency Switching: 700kHz

Output Type: Transistor Driver

Topology: Forward Converter

Number of Outputs: 1

Output Phases: 1

Quality and Safety Features

Operating Temperature range of -40°C to 85°C ensures reliability in harsh conditions

Compatibility

Surface Mount 20-SSOP package compatible with standard PCB manufacturing processes

Application Areas

Power supply modules

Battery-operated devices

Embedded systems

Renewable energy systems

Product Lifecycle

Status: Active

Not indicated as nearing discontinuation, implying stability in availability

Several Key Reasons to Choose This Product

Versatile application due to step-up/step-down capability

Enables design of isolated power supplies with ease

High-frequency operation allows for smaller component size

Robust operation across a wide temperature range

Analog Devices' reputation for reliability and quality

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LT3781IG

Product Attribute LT3781IG LT3782AEFE LT3781IG LT3782EFE#PBF
Part Number LT3781IG LT3782AEFE LT3781IG LT3782EFE#PBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Linear Technology Analog Devices Inc.
Serial Interfaces - - - -
Supplier Device Package 20-SSOP 28-TSSOP-EP 20-SSOP 28-TSSOP-EP
Output Type Transistor Driver Transistor Driver Transistor Driver Transistor Driver
Synchronous Rectifier No Yes No Yes
Package Tube Tube Bulk Tube
Frequency - Switching 700kHz 154kHz ~ 465kHz Up to 700kHz 154kHz ~ 465kHz
Duty Cycle (Max) - 94% 50% 94%
Package / Case 20-SSOP (0.209', 5.30mm Width) 28-TSSOP (0.173", 4.40mm Width) Exposed Pad 20-SSOP (0.209", 5.30mm Width) 28-TSSOP (0.173', 4.40mm Width) Exposed Pad
Output Phases 1 2 1 2
Voltage - Supply (Vcc/Vdd) 9V ~ 18V 6V ~ 40V 9V ~ 18V 6V ~ 40V
Base Product Number LT3781 LT3782 - LT3782
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 125°C -40°C ~ 85°C (TA) -40°C ~ 125°C (TJ)
Output Configuration Positive, Isolation Capable Positive Positive, Isolation Capable Positive
Clock Sync Yes Yes Yes Yes
Number of Outputs 1 2 1 2
Topology Forward Converter Boost Forward Converter Boost
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Series - - - -
Control Features Enable, Soft Start Enable, Frequency Control, Reset, Soft Start Enable, Soft Start Enable, Reset, Soft Start
Function Step-Up/Step-Down Step-Up Step-Up/Step-Down Step-Up

LT3781IG Datasheet PDF

Download LT3781IG pdf datasheets and Analog Devices Inc. documentation for LT3781IG - Analog Devices Inc..

Datasheets
Cylindrical Battery Holders.pdf
PCN Design/Specification
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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LT3781IG Image

LT3781IG

Analog Devices Inc.
32D-LT3781IG

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