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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsLT1959IR
Linear Technology
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LT1959IR - Linear Technology

Manufacturer Part Number
LT1959IR
Manufacturer
Linear Technology
Allelco Part Number
32D-LT1959IR
ECAD Model
Parts Description
IC REG BUCK ADJ 4.5A 7DDPAK
Detailed Description
Package
TO-263-8, D²Pak (7 Leads + Tab), TO-263CA
Data sheet
LT1959IR.pdf
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Specifications

LT1959IR Tech Specifications
Linear Technology - LT1959IR technical specifications, attributes, parameters and parts with similar specifications to Linear Technology - LT1959IR

Product Attribute Attribute Value  
Manufacturer Linear Technology  
Voltage - Output (Min/Fixed) 1.21V  
Voltage - Output (Max) 14.88V  
Voltage - Input (Min) 4V  
Voltage - Input (Max) 16V  
Topology Buck, SEPIC  
Synchronous Rectifier No  
Supplier Device Package 7-DDPAK  
Series -  
Package / Case TO-263-8, D²Pak (7 Leads + Tab), TO-263CA  
Product Attribute Attribute Value  
Package Bulk  
Output Type Adjustable  
Output Configuration Positive  
Operating Temperature -40°C ~ 125°C (TJ)  
Number of Outputs 1  
Mounting Type Surface Mount  
Function Step-Down, Step-Up/Step-Down  
Frequency - Switching 500kHz  
Current - Output 4.5A (Switch)  

Parts Introduction

Manufacturer Part Number

LT1959IR

Manufacturer

Linear Technology

Introduction

The LT1959IR is a high-efficiency, high-power, synchronous step-down (buck) or step-up/step-down (SEPIC) DC/DC converter with an adjustable output voltage.

Product Features and Performance

Wide input voltage range: 4V to 16V

Adjustable output voltage: 1.21V to 14.88V

High-efficiency synchronous rectification

500kHz switching frequency

5A output current capability

Thermal shutdown and current limit protection

Compact 7-lead DDPAK/TO-263 package

Product Advantages

High efficiency and power density

Wide input and output voltage range

Robust protection features

Compact size for space-constrained applications

Key Technical Parameters

Input Voltage Range: 4V to 16V

Output Voltage Range: 1.21V to 14.88V

Output Current: 4.5A

Switching Frequency: 500kHz

Topology: Buck, SEPIC

Rectifier Type: Synchronous

Quality and Safety Features

RoHS non-compliant

Thermal shutdown and current limit protection

Compatibility

Surface mount package (TO-263-8, DPak)

Application Areas

Portable devices

Industrial equipment

Automotive electronics

Telecom and networking equipment

Product Lifecycle

This product is still in active production and available for purchase.

Several Key Reasons to Choose This Product

Wide input and output voltage range for flexible design

High-efficiency synchronous rectification for improved power conversion

Compact size and surface-mount package for space-constrained applications

Robust protection features for reliable operation

Long-term availability and support from Linear Technology

Parts with Similar Specifications

The three parts on the right have similar specifications to Linear Technology LT1959IR

Product Attribute LT1959IR LT1956IFE-5#PBF LT1959IR#TRPBF LT1961EMS8E#TRPBF
Part Number LT1959IR LT1956IFE-5#PBF LT1959IR#TRPBF LT1961EMS8E#TRPBF
Manufacturer Linear Technology Linear Technology Analog Devices Inc. Analog Devices Inc.
Output Type Adjustable Fixed Adjustable Adjustable
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) 0°C ~ 125°C (TJ)
Function Step-Down, Step-Up/Step-Down Step-Down Step-Down Step-Up, Step-Up/Step-Down
Series - - - -
Voltage - Output (Min/Fixed) 1.21V 5V 1.21V 1.2V
Package / Case TO-263-8, D²Pak (7 Leads + Tab), TO-263CA 16-TSSOP (0.173", 4.40mm Width) Exposed Pad TO-263-8, D²Pak (7 Leads + Tab), TO-263CA 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
Current - Output 4.5A (Switch) 1.5A (Switch) 4.5A (Switch) 1.5A (Switch)
Voltage - Input (Min) 4V 5.5V 4.3V 3V
Frequency - Switching 500kHz 500kHz 500kHz 1.25MHz
Output Configuration Positive Positive Positive Positive
Voltage - Output (Max) 14.88V - 12.9V 35V (Switch)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Synchronous Rectifier No No No No
Number of Outputs 1 1 1 1
Package Bulk Bulk Tape & Reel (TR) Tape & Reel (TR)
Voltage - Input (Max) 16V 60V 15V 25V
Topology Buck, SEPIC Buck Buck, SEPIC Boost, Flyback, SEPIC
Supplier Device Package 7-DDPAK 16-TSSOP-EP 7-DDPAK 8-MSOP-EP

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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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Linear Technology

LT1959IR

Linear Technology
32D-LT1959IR

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