LT1959

PRODUCTION

4.5A, 500kHz Step-Down Switching Regulator

Data Sheet
Part Models
8
1ku List Price
Starting From $5.48
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Part Details

  • Operates with Input as Low as 4V
  • Output Range Down to 1.21V
  • Constant 500kHz Switching Frequency
  • Uses All Surface Mount Components
  • Inductor Size Reduced to 1.8µH
  • Saturating Switch Design: 0.07Ω
  • Shutdown Current: 20µA
  • Easily Synchronizable
  • Cycle-by-Cycle Current Limiting
  • 4.5A Switch
  • Current Mode Control
LT1959
4.5A, 500kHz Step-Down Switching Regulator
5V to 1.8V Down Converter Efficiency vs Load Current Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
Circuit Monitors 1
LTC2960
RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Oscillators 1
LTC6909
PRODUCTION 1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation
Power System Managers & Sequencers 1
LTC2974
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LT1959

LTpowerCAD

Design tools for the following parts are available in LTpowerCAD:

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
DC355A

LT1959CS8 | 4.5A Switch, 500kHz Step-Down Regulator, 5V to 15VIN, 1.8VOUT @ 4A

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Product Details

DC355A: Demo Board for the LT1959 4.5A, 500kHz Step-Down Switching Regulator.

eval board
schematic 2
DC356A

LT1959CR | 4.5A Switch, 500kHz Step-Down Regulator, 5V to 15VIN, 1.8VOUT @ 4A

Buy Now View Details

Product Details

DC356A: Demo Board for the LT1959 4.5A, 500kHz Step-Down Switching Regulator.
DC355A
LT1959CS8 | 4.5A Switch, 500kHz Step-Down Regulator, 5V to 15VIN, 1.8VOUT @ 4A
DC355A - Schematic
DC356A
LT1959CR | 4.5A Switch, 500kHz Step-Down Regulator, 5V to 15VIN, 1.8VOUT @ 4A
DC356A - Schematic

Reference Designs

View 1
View 1
View 2
LTC Parts List
DK-N2EVAL-3C25N Block Diagram
Altera Nios II Embedded Evaluation Kit, Cyclone III Edition Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
DK-START-3C25N Kit
DK-START-3C25N Kit
LTC Parts
DK-START-3C25N Block Diagram
Altera Cyclone III FPGA Starter Kit Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
Altera Nios II Embedded Evaluation Kit, Cyclone III Edition
View 1
View 2
LTC Parts List
DK-N2EVAL-3C25N Block Diagram
Altera Cyclone III FPGA Starter Kit
DK-START-3C25N Kit
LTC Parts
DK-START-3C25N Block Diagram

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