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LM2594: Buck Regulator, Switching, 0.5 A

Overview
Specifications
Applications
Datasheet: 150 KHz 0.5A Step-Down Switching Regulator
Rev. 0 (555.0kB)
»Показать химический состав
»Уведомление об обновлениях схем (3)
Product Overview
Описание продукта
The LM2594 series of Buck Switching Regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation.

Requiring a minimum number of external components, these Buck Switching Regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator.

The LM2594 series operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 8-lead PDIP package and 8-lead SOIC surface mount package.

A standard series of inductors are available from several different manufacturers optimized for use with the LM2594 series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a guaranteed +/-4% tolerance on output voltage under specified input voltage and output load conditions, and +/-15% on the oscillator frequency. External shutdown is included, featuring typically 80 µA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions. See LM2596 for 3.0A and LM2595 for 1.0A.
Отличительные черты   Benefits
     
  • Adjustable output voltage range, 1.2V to 37V +/-4% max over line and load
 
  • Flexible to configure for different output voltages and applications
  • Available in TO-220 and D2PAK packages
 
  • Different mounting options
  • Guaranteed 0.5A output load current
 
  • High power density designs
  • Input voltage range up to 40V
 
  • Can be used with several input voltage supplies (+12V, +24V, +36V)
  • Excellent line and load regulation specifications
 
  • Provides a stable power supply
  • 150 kHz fixed frequency internal oscillator
 
  • No external component required to set frequency
  • TTL shutdown capability
 
  • Easy to implement low power modes
  • Low power standby mode, Iq typically 80 µA
 
  • Power saving mode
  • Uses readily available standard inductors
 
  • Quick and easy implementation
  • Thermal shutdown and current limit
 
  • Additional protection against faults
Применения   End Products
  • Simple high-efficiency step-down (buck) regulator
  • On-card switching regulators
  • Positive to negative converter
 
  • LCD-TV SMPS
Технические информацие
Спецификацие (1) Демонстрационные платы - справочники (8)
Типы корпусов (2)  
Информация по демонстрационной плате
Продукт Состояние Compliance Короткое описание Поступок
LM2594APDBCKGEVB Active
Pb-free
Step-Down Switching Regulator Evaluation Board
LM2594ASCBCKGEVB Active
Pb-free
Step-Down Switching Regulator Evaluation Board
Avnet (2015-07-09) : 2
Digikey (2015-07-09) : 2
Avnet (2015-07-09) : 4
Digikey (2015-07-09) : 2
Наличие и образцы
Продукт
Состояние
Compliance
Описание
Корпус
MSL*
Контейнер
Бюджетная цена единицы
Тип
Размеры
Тип
Кол.
LM2594DADJG Last Shipments 
Pb-free
Halide free
Buck Regulator, Switching, 0.5 A SOIC-8 751-07 1 Tube 98  
LM2594DADJR2G Active
Pb-free
Halide free
Buck Regulator, Switching, 0.5 A SOIC-8 751-07 1 Tape and Reel 2500 $1.2
LM2594PADJG Last Shipments 
Pb-free
Halide free
Buck Regulator, Switching, 0.5 A PDIP-8 626-05 NA Tube 50  
* Уровень чувствительности компонента к влажности
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : 4 to 8
Digikey   (2015-07-09) : >1K
FutureElectronics   (2015-07-09) : >10K
Mouser   (2015-07-09) : >1K
PandS   (2015-07-09) : >1K
Market Leadtime (weeks) : Contact Factory
Datasheet: 150 KHz 0.5A Step-Down Switching Regulator
Rev. 0 (555.0kB)
»Показать химический состав
»Уведомление об обновлениях схем (3)
Product Overview

Product Compliance Status Description Topology Control Mode VCC Min (V) VCC Max (V) VO Typ (V) IO Typ (A) Efficiency (%) fSW Typ (kHz) Package Type
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 0.5 A   Step-Down   Voltage Mode   4.5   40   1.23 to 37   0.5   85   150   SOIC-8 
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