LM2597MX-ADJ/NOPB by Texas Instruments | APACDC to DC Converters | Avnet ASIA
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LM2597MX-ADJ/NOPB

Texas Instruments

Conv DC-DC Single Inv/Step Down 4.5V to 40V 8-Pin SOIC N T/R

製造商產品編號: LM2597MX-ADJ/NOPB

替代料號: LM2597MX-ADJ/NOPB


通過RoHS認證

描述

文檔

替代/替換

資料

The LM2597/LM2597HV 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 an 8-lead PDIP and an 8-lead surface mount package.

This series of switching regulators is similar to the LM2594 series, with additional supervisory and performance features added.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, fixed-frequency oscillator, (Shutdown)\ and Soft-start, error flag delay and error flag output.

The LM2597/LM2597HV 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 LM2597/LM2597HV series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a specified ±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 current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

The LM2597HV is for use in applications requiring and input voltage up to 60V.

Patent Number 5,382,918.

技術參數

  • Adjustable Version Output Voltage Range, 1.2V to 37V ±4% Max Over Line and Load Conditions
  • Specified 0.5A Output Current
  • Available in 8-pin Surface Mount and PDIP-8 Package
  • Input Voltage Range Up to 60V
  • 150 kHz Fixed Frequency Internal Oscillator
  • (Shutdown)\ and Soft-start
  • Out of Regulation Error Flag
  • Error Output Delay
  • Bias Supply Pin (VBS) for Internal Circuitry Improves Efficiency at High Input Voltages
  • Low Power Standby Mode, IQ Typically 85 μA
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current Limit Protection

技術屬性

描述
尋找類似物料
Product Dimensions
4.9 x 3.9 x 1.45 mm
Lead Finish
Tin
Output Type
Adjustable
Switching Regulator
Yes
Output Voltage
1.2 to 37 V
Switching Frequency
150 kHz
MSL Level
1
Supplier Package
SOIC N
Pin Count
8
Operating Supply Voltage
4.5 to 40 V
Maximum Input Voltage
40 V
Operating Temperature
-40 to 125 °C
Efficiency
80 %
Minimum Input Voltage
4.5 V
Mounting
Surface Mount
Max Processing Temp
260
Type
Inverting|Step Down
Maximum Output Current
0.5 A
Number of Outputs
1

ECCN/UNSPSC

描述
ECCN:
EAR99
計劃交貨期 B:
8542390000
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