LM2591HVT-ADJ/NOPB

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LM2591HVT-ADJ/NOPB

SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator

Packaging

Package | PIN: NDH | 5
Temp: Q (-40 to 125)
Carrier: Partial Tube
Qty Price
1-9 $4.38
10-24 $3.94
25-99 $3.68
100-249 $3.30
250-499 $3.08
500-749 $2.68
750-999 $2.32
1000+ $2.00

Features

  • 3.3-V, 5-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.2 V
    to 57 V ±4% Maximum Over Line and Load
    Conditions
  • Specified 1-A Output Load Current
  • Available in 5-Pin Package
  • Input Voltage Range Up to 60 V
  • 150-kHz Fixed Frequency Internal Oscillator
  • ON and OFF Control
  • Low Power Standby Mode, IQ Typically 90 µA
  • High Efficiency
  • Thermal Shutdown and Current-Limit Protection

Texas Instruments  LM2591HVT-ADJ/NOPB

The LM2591HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, and an adjustable output version.

This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and control features of the latter.

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

The LM2591HV 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 5-pin package with several different lead bend options, and a 5-pin surface mount package.

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 90-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.