LM2575HVS-ADJ ,SIMPLE SWITCHER 1A Step-Down Voltage RegulatorFeaturesn 3.3V, 5V, 12V, 15V, and adjustable output versionsThe LM2575 series of regulators are mon ..
LM2575HVS-ADJ/NOPB ,SIMPLE SWITCHER 1A Step-Down Voltage Regulator 5-DDPAK/TO-263 -40 to 125FEATURES DESCRIPTIONThe LM2575 series of regulators are monolithic23• 3.3V, 5V, 12V, 15V, and Adjus ..
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LM2575HVSX-3.3/NOPB ,SIMPLE SWITCHER 1A Step-Down Voltage Regulator 5-DDPAK/TO-263 -40 to 125FEATURES DESCRIPTIONThe LM2575 series of regulators are monolithic23• 3.3V, 5V, 12V, 15V, and Adjus ..
LM2575HVSX-5.0 ,SIMPLE SWITCHER 1A Step-Down Voltage RegulatorLM1575/LM2575/LM2575HV Series SIMPLE SWITCHER 1A Step-Down Voltage RegulatorAugust 2004LM1575/LM257 ..
LM2575HVSX-5.0 ,SIMPLE SWITCHER 1A Step-Down Voltage Regulatorfeatures include a guaranteed ±4% tolerance on out-n On-card switching regulatorsput voltage within ..
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LM2575HVM-12-LM2575HVM-15-LM2575HVM-5.0-LM2575HVM-ADJ-LM2575HVMX-5.0-LM2575HVMX-ADJ-LM2575HVN-12-LM2575HVN-15-LM2575HVN-5.0-LM2575HVN-ADJ-LM2575HVS-12-LM2575HVS-3.3-LM2575HVS-5.0-LM2575HVS-ADJ-LM2575HVSX-3.3-LM2575HVSX-5.0-LM2575HVSX-ADJ-LM2575HVT-1.5-LM2575HVT-12-LM
SIMPLE SWITCHER 1A Step-Down Voltage Regulator
LM1575/LM2575/LM2575HV
SIMPLE SWITCHER® 1A Step-Down Voltage Regulator
General DescriptionThe LM2575 seriesof regulators are monolithic integrated
circuits that provideallthe active functionsfora step-down
(buck) switching regulator, capableof drivinga1A load with
excellent line and load regulation. These devices are avail-
ablein fixed output voltagesof 3.3V, 5V, 12V, 15V, andan
adjustable output version.
Requiringa minimum numberof external components, these
regulators are simpleto use and include internal frequency
compensation anda fixed-frequency oscillator.
The LM2575 series offersa high-efficiency replacementfor
popular three-terminal linear regulators.It substantiallyre-
duces the sizeof the heat sink, andin many casesno heat
sinkis required. standard seriesof inductors optimizedfor use with the
LM2575 are available from several different manufacturers.
This feature greatly simplifies the designof switch-mode
power supplies.
Other features includea guaranteed ±4% toleranceon out-
put voltage within specified input voltages and output load
conditions, and ±10%on the oscillator frequency. External
shutdownis included, featuring50µA (typical) standby cur-
rent. The output switch includes cycle-by-cycle current limit-
ing,as wellas thermal shutdownfor full protection under
fault conditions.
Features 3.3V, 5V, 12V, 15V, and adjustable output versions Adjustable version output voltage range,
1.23Vto 37V (57Vfor HV version) ±4% max over
line and load conditions Guaranteed1A output current Wide input voltage range, 40Vupto 60Vfor HV version Requires only4 external components52 kHz fixed frequency internal oscillator TTL shutdown capability, low power standby mode High efficiency Uses readily available standard inductors Thermal shutdown and current limit protectionP+ Product Enhancement tested
Applications Simple high-efficiency step-down (buck) regulator Efficient pre-regulatorfor linear regulators On-card switching regulators Positiveto negative converter (Buck-Boost)
Typical Application (Fixed Output Voltage
Versions)
Note:Pin numbersareforthe TO-220 package.
August 2004
LM1575/LM2575/LM2575HV
Series
SIMPLE
SWITCHER
Step-Down
oltage
Regulator
