LM2599S-ADJ/NOPB

text.skipToContent text.skipToNavigation

LM2599S-ADJ/NOPB

SIMPLE SWITCHER Power Converter 150 KHz 3A Step-Down Voltage Regulator with Features

Packaging

Package | PIN: KTW | 7
Temp: Q (-40 to 125)
Carrier: Partial Tube
Qty Price
1-9 $5.39
10-24 $4.85
25-99 $4.53
100-249 $4.06
250-499 $3.79
500-749 $3.30
750-999 $2.85
1000+ $2.46

Features

  • 3.3-V, 5-V, 12-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.2 V
    to 37 V ±4% Maximum Over Line and Load
    Conditions
  • 3-A Output Current
  • Available in 7-Pin TO-220 and TO-263 (Surface-
    Mount) Package
  • Input Voltage Range Up to 40 V
  • 150-kHz Fixed-Frequency Internal Oscillator
  • Shutdown and Soft-Start
  • Out-of-Regulation Error Flag
  • Error Output Delay
  • Low Power Standby Mode, IQ, Typically 80 µA
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current-Limit Protection

Texas Instruments  LM2599S-ADJ/NOPB

The LM2599 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.

The LM2598 is a member of the LM259x family, 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 LM2599 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 7-pin TO-220 package with several different lead bend options, and a 7-pin TO-263 surface-mount package.

A standard series of inductors (both through-hole and surface-mount types) are available from several different manufacturers optimized for use with the LM2599 series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a ±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 80-µA standby current. Self-protection features include a two stage current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions.