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Home ›  LL27 > LM2597HVM-12-LM2597HVM-3.3-LM2597HVM-5.0-LM2597HVM-ADJ-LM2597HVMX-12-LM2597HVMX-ADJ-LM2597HVN-3.3-LM2597HVN-5.0-LM2597HVN-ADJ-LM2597M-1.2-LM2597M-12-LM2597M-3.3-LM2597M-5.0-LM2597M-ADJ-LM2597MX-12-LM2597MX-3.3-LM2597MX-5.0-LM2597MX-ADJ-LM2597N-12-LM2597N-3.3-LM2597N-,SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
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LM2597HVM-12 |LM2597HVM12NSN/a302avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597HVM-3.3 |LM2597HVM33NSN/a10600avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597HVM-5.0 |LM2597HVM50NSN/a8044avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597HVM-ADJ |LM2597HVMADJNSN/a6100avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597HVMX-12 |LM2597HVMX12NSN/a1837avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597HVMX-ADJ |LM2597HVMXADJNSN/a5000avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597HVN-3.3 |LM2597HVN33NSN/a13avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597HVN-5.0 |LM2597HVN50NSN/a215avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597HVN-ADJ |LM2597HVNADJNSCN/a1957avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597M-1.2 |LM2597M12NSN/a10avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597M-12 |LM2597M12NSN/a635avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597M-3.3 |LM2597M33NSCN/a2avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597M-3.3 |LM2597M33NSN/a1020avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597M-5.0 |LM2597M50NSN/a850avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597M-ADJ |LM2597MADJNSN/a2676avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597MX-12 |LM2597MX12NSN/a2252avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597MX-3.3 |LM2597MX33NSN/a10000avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597MX-5.0 |LM2597MX50NSN/a2000avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597MX-ADJ |LM2597MXADJNSN/a6552avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597N-12 |LM2597N12NSN/a1280avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597N-3.3 |LM2597N33NSN/a7avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597N-5.0 |LM2597N50NSN/a5avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2597N-ADJ |LM2597NADJNSN/a14avaiSIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator


LM2597HVM-3.3 ,SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Featuresfeatures include a two stagecurrent limit for the output switch and an over temperatureshutdown for ..
LM2597HVM-5.0 ,SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Featuresfeatures n Available in 8-pin surface mount and DIP-8 packageadded.n Input voltage range up to 60Vn ..
LM2597HVM-ADJ ,SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with FeaturesFeaturesstep-down (buck) switching regulator, capable of driving an 3.3V, 5V, 12V, and adjustable o ..
LM2597HVMX-12 ,SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with FeaturesElectrical CharacteristicsSpecifications with standard type face are for T = 25˚C, and those with b ..
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 ..
LM2597HVMX-ADJ ,SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with FeaturesFeaturesstep-down (buck) switching regulator, capable of driving an 3.3V, 5V, 12V, and adjustable o ..
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LM4883SQX ,Dual 2.1W Audio Amplifier Plus Stereo Headphone Function
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LM2597HVM-12-LM2597HVM-3.3-LM2597HVM-5.0-LM2597HVM-ADJ-LM2597HVMX-12-LM2597HVMX-ADJ-LM2597HVN-3.3-LM2597HVN-5.0-LM2597HVN-ADJ-LM2597M-1.2-LM2597M-12-LM2597M-3.3-LM2597M-5.0-LM2597M-ADJ-LM2597MX-12-LM2597MX-3.3-LM2597MX-5.0-LM2597MX-ADJ-LM2597N-12-LM2597N-3.3-LM2597N-
SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
LM2597/LM2597HV
SIMPLE SWITCHER® Power Converter 150 kHz 0.5A
Step-Down Voltage Regulator, with Features
General Description

The LM2597/LM2597HV seriesof regulators are monolithic
integrated circuits that provideallthe active functionsfora
step-down (buck) switching regulator, capableof drivinga
0.5A load with excellent line and load regulation. These
devices are availablein fixed output voltagesof 3.3V, 5V,
12V, andan adjustable output version, and are packagedin 8-lead DIP andan 8-lead surface mount package.
This seriesof switching regulatorsis similartothe LM2594
series, with additional supervisory and performance features
added.
Requiringa minimum numberof 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 LM2597/LM2597HV series operatesata switching fre-
quencyof 150 kHz thus allowing smaller sized filter compo-
nents than what wouldbe needed with lower frequency
switching regulators. Becauseofits high efficiency,the cop-
per tracesonthe printed circuit board are normally the only
heat sinking needed. standard seriesof inductors (both through hole and sur-
face mount types) are available from several different manu-
facturers optimizedfor use withthe LM2597/LM2597HV se-
ries. This feature greatly simplifies the design of
switch-mode power supplies.
Other features includea guaranteed ±4% toleranceon out-
put voltage underall conditionsof input voltage and output
load conditions, and ±15%on the oscillator frequency. Ex-
ternal shutdownis included, featuring typically 85μA
standby current. Self protection features includea two stage
current limitfor the output switch andan over temperature
shutdownfor complete protection under fault conditions.
The LM2597HVisfor usein applications requiring and input
voltageupto 60V.
Features
3.3V, 5V, 12V, and adjustable output versions Adjustable version output voltage range, 1.2Vto 37V
(57Vfor HV version)±4% max over line and load
conditions Guaranteed 0.5A output current Availablein 8-pin surface mount and DIP-8 package Input voltage rangeupto 60V 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 typically85μA High Efficiency Uses readily available standard inductors Thermal shutdown and current limit protection
Applications
Simple high-efficiency step-down (buck) regulator Efficient pre-regulatorfor linear regulators On-card switching regulators Positiveto Negative converter
Typical Application
(Fixed Output Voltage Versions)
DS012440-1
†Patent Number 5,382,918.
December 2000
LM2597/LM2597HV
SIMPLE
SWITCHER
Power
Converter
kHz
0.5A
Step-Down
oltage
Regulator
with
Features
ic,good price


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