LM2594N-5.0/NOPB by Texas Instruments | APACDC to DC Converter | Avnet ASIA

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信息

LM2594N-5.0/NOPB

Texas Instruments

Conv DC-DC Single Inv/Step Down 4.5V to 40V 8-Pin PDIP Rail

制造商料号#: LM2594N-5.0/NOPB

替代型号#: LM2594N-5.0/NOPB


legend 通过RoHS认证

描述

文档

替代/替换

信息

The LM2594/LM2594HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version, and are packaged in a 8-lead PDIP and a 8-lead surface mount SOIC package.

Requiring a minimum number of external components, these regulators are simple to use and feature internal frequency compensation, a fixed-frequency oscillator, and improved line and load regulation specifications.

The LM2594/LM2594HV 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. Because of its high efficiency, the copper traces on the printed circuit board are normally the only heat sinking needed.

A standard series of inductors (both through hole and surface mount types) are available from several different manufacturers optimized for use with the LM2594/LM2594HV series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include an ensured ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 85 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.

The LM2594HV is for applications requiring an input voltage up to 60V.

 

技术参数

  • 3.3V, 5V, 12V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range, 1.2V to 37V (57V for the HV Version)±4% Max Over Line and Load Conditions
  • Available in 8-pin Surface Mount SOIC and PDIP-8 Package
  • Ensured 0.5A Output Current
  • Input Voltage Range up to 60V
  • Requires only 4 External Components
  • 150 kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability
  • Low Power Standby Mode, IQ typically 85 μA
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current Limit Protection
  • 技术特性

    描述
    寻找类似物料
    Product Dimensions
    9.27 x 6.35 x 3.3 mm
    Output Voltage
    5 V
    Maximum Input Voltage
    40 V
    Efficiency
    82 %
    Max Processing Temp
    260
    Mounting
    Through Hole
    Supplier Package
    PDIP
    Operating Supply Voltage
    4.5 to 40 V
    Switching Frequency
    173 kHz
    Number of Outputs
    1
    Maximum Output Current
    0.5 A
    Operating Temperature
    -40 to 125 °C
    Pin Count
    8
    Type
    Inverting|Step Down
    MSL Level
    1
    Lead Finish
    Matte Tin
    Output Type
    Fixed
    Switching Regulator
    Yes
    Minimum Input Voltage
    4.5 V

    ECCN / UNSPSC

    描述
    ECCN:
    EAR99
    计划交货期 B:
    8542390000"
    UNSPSC:
    32101600
    UNSPSC VERSION:
    V15.1101

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