LM2597HVMX-5.0/NOPB ,SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features 8-SOIC -40 to 125features added.• Shutdown/Soft-StartRequiring a minimum number of external• Out of Regulation Error ..
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LM2597HVMX-5.0/NOPB
SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features 8-SOIC -40 to 125
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LM2597, LM2597HVSNVS119D –MARCH 1998–REVISED MAY 2016
LM2597, LM2597HV SIMPLE SWITCHER® Power Converter 150-kHz 0.5-A Step-Down
Voltage Regulator With Features Features 3.3-V, 5-V, 12-V, and Adjustable Output Versions Adjustable Version Output Voltage Range: 1.2V37V (57Vfor HV Version) ±4% Maximum Over
Line and Load Conditions Specified 0.5-A Output Current Availablein 8-Pin Surface-Mount and 8-Pin PDIP
Packages Input Voltage Range Upto60V 150-kHz Fixed-Frequency Internal Oscillator Shutdown/Soft-Start Outof Regulation Error Flag Error Output Delay Bias Supply Pin (VBS)for Internal Circuitry
Improves Efficiencyat High Input Voltages Low Power Standby Mode,IQ, Typically 85 μA High Efficiency Uses Readily Available Standard Inductors Thermal Shutdown and Current-Limit Protection
Applications Simple High-Efficiency Step-Down (Buck)
Regulator Efficient Preregulator for Linear Regulators On-Card Switching Regulators Positive-to-Negative Converter
DescriptionThe LM2597xx seriesof regulators are monolithic
integrated circuits that provideall the active functions
fora step-down (buck) switching regulator, capableof
drivinga 0.5-A load with excellent line and load
regulation. These devices are availablein fixed output
voltagesof 3.3V,5V,12V, and an adjustable output
version, and are packagedin an 8-pin PDIP and an
8-pin surface-mount package.
This seriesof switching regulatorsis similarto the
LM2594 series, with additional supervisory and
performance features added.
Requiring a minimum number of external
components, these regulators are simpleto use and
include internal frequency compensation, improved
line and load specifications, fixed-frequency oscillator,
Shutdown/Soft-start, error flag delay, and error flag
output.
The LM2597xx series operates at a switching
frequency of 150-kHz, thus allowing smaller-sized
filter components than what would be required with
lower-frequency switching regulators. Becauseofits
high efficiency, the copper traces on the printed-
circuit board are normally the only heat sinking
required.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application
