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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsLT3957IUHE
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LT3957IUHE - Analog Devices Inc.

Manufacturer Part Number
LT3957IUHE
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-LT3957IUHE
ECAD Model
Parts Description
IC REG MULTI CONFG ADJ 5A 36QFN
Detailed Description
Package
36-WFQFN, 28 Leads, Exposed Pad
Data sheet
LT3957IUHE.pdf
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Specifications

LT3957IUHE Tech Specifications
Analog Devices Inc. - LT3957IUHE technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LT3957IUHE

Product Attribute Attribute Value  
Manufacturer Analog Devices, Inc.  
Voltage - Output (Min/Fixed) 1.6V  
Voltage - Output (Max) 40V (Switch)  
Voltage - Input (Min) 3V  
Voltage - Input (Max) 40V  
Topology Boost, Cuk, Flyback, SEPIC  
Synchronous Rectifier No  
Supplier Device Package 36-QFN (5x6)  
Series -  
Package / Case 36-WFQFN, 28 Leads, Exposed Pad  
Product Attribute Attribute Value  
Package Tube  
Output Type Adjustable  
Output Configuration Positive or Negative  
Operating Temperature -40°C ~ 125°C (TJ)  
Number of Outputs 1  
Mounting Type Surface Mount  
Function Step-Up, Step-Up/Step-Down  
Frequency - Switching 100kHz ~ 1MHz  
Current - Output 5A (Switch)  

Parts Introduction

Manufacturer Part Number

LT3957IUHE

Manufacturer

analog-devices

Introduction

The LT3957IUHE is a high-efficiency, synchronous step-up/step-down DC/DC converter that can operate from input voltages as low as 3V and as high as 40V. It can deliver up to 5A of continuous output current with very few external components.

Product Features and Performance

Wide input voltage range: 3V to 40V

High switching frequency: 100kHz to 1MHz

Adjustable output voltage from 1.6V to 40V

5A maximum output current

Synchronous rectification for high efficiency

Continuous mode operation with low output ripple

Internal compensation for stable operation

Thermal shutdown and current limit protection

Tiny 36-pin 5mm x 6mm QFN package

Product Advantages

Broad input voltage range allows operation from various power sources

High switching frequency enables use of small external components

Adjustable output voltage provides flexibility for different applications

Synchronous rectification delivers high efficiency

Comprehensive protection features ensure safe and reliable operation

Key Reasons to Choose This Product

Unparalleled performance and efficiency in a compact package

Versatile design suitable for a wide range of power supply applications

Robust protection features ensure long-term reliability

Analog Devices' reputation for high-quality, innovative power management solutions

Quality and Safety Features

Thermal shutdown protection

Current limit protection

Comprehensive safety features for reliable operation

Compatibility

The LT3957IUHE is a direct replacement for the obsolete LT3957 device. There are no immediate alternative models available, but customers can contact the sales team for more information on equivalent or alternative solutions.

Application Areas

Automotive electronics

Industrial equipment

Telecom infrastructure

Portable devices

Home appliances

Product Lifecycle

The LT3957IUHE is an obsolete product, and Analog Devices no longer manufactures it. Customers should contact our website's sales team for more information on equivalent or alternative solutions that may be available.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LT3957IUHE

Product Attribute LT3957IUHE LT3958IUHE#PBF LT3957EUHE#PBF LT3959EFE#PBF
Part Number LT3957IUHE LT3958IUHE#PBF LT3957EUHE#PBF LT3959EFE#PBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Synchronous Rectifier No No No No
Package / Case 36-WFQFN, 28 Leads, Exposed Pad 36-WFQFN, 28 Leads, Exposed Pad 36-WFQFN, 28 Leads, Exposed Pad 38-TFSOP (0.173', 4.40mm Width) Exposed Pad
Voltage - Output (Max) 40V (Switch) 84V (Switch) 40V (Switch) 40V (Switch)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Frequency - Switching 100kHz ~ 1MHz 100kHz ~ 1MHz 100kHz ~ 1MHz 100kHz ~ 1MHz
Voltage - Input (Max) 40V 80V 40V 40V
Package Tube Tube Tube Tube
Output Configuration Positive or Negative Positive or Negative Positive or Negative Positive or Negative
Current - Output 5A (Switch) 3.3A (Switch) 5A (Switch) 6A (Switch)
Function Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down
Number of Outputs 1 1 1 1
Topology Boost, Cuk, Flyback, SEPIC Boost, Cuk, Flyback, SEPIC Boost, Cuk, Flyback, SEPIC Boost, Cuk, SEPIC
Supplier Device Package 36-QFN (5x6) 36-QFN (5x6) 36-QFN (5x6) 38-TSSOP-EP
Output Type Adjustable Adjustable Adjustable Adjustable
Series - - - -
Voltage - Input (Min) 3V 5V 3V 1.6V
Voltage - Output (Min/Fixed) 1.6V 1.6V 1.6V 0.8V

LT3957IUHE Datasheet PDF

Download LT3957IUHE pdf datasheets and Analog Devices Inc. documentation for LT3957IUHE - Analog Devices Inc..

PCN Obsolescence/ EOL
Mult Devices OBS 30/Apr/2018.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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LT3957IUHE Image

LT3957IUHE

Analog Devices Inc.
32D-LT3957IUHE

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