LM2574N-5 ,EASY SWITCHER 0.5 A STEP-DOWN VOLTAGE REGULATOROrder this document by LM2574/DEASY SWITCHER ** *0.5 A STEP–DOWN * VOLTAGE REGULATORThe LM257 ..
LM2574N-5.0 ,SIMPLE SWITCHER 0.5A Step-Down Voltage RegulatorLM2574/LM2574HV SIMPLE SWITCHER 0.5A Step-Down Voltage RegulatorJune 1999LM2574/LM2574HV™SIMPLE SWI ..
LM2574N-ADJ ,SIMPLE SWITCHER 0.5A Step-Down Voltage RegulatorElectrical CharacteristicsSpecifications with standard type face are for T = 25˚C, and those with b ..
LM2574YN , 52kHz Simple 0.5A Buck Regulator
LM2575 ,1.0A Step Down Switching voltage Regulator Adjustable & Fix Outputfeatures and the main protective andThe LM2575–ADJ Easy Switch step down convertercontrol function ..
LM2575-12 , EASY SWITCHERE™ 1.0 A STEP-DOWN VOLTAGE REGULATOR
LM4128DMF-2.5 , SOT-23 Precision Micropower Series Voltage Reference
LM4128DMF-2.5 , SOT-23 Precision Micropower Series Voltage Reference
LM4128DMF-3.0 , SOT-23 Precision Micropower Series Voltage Reference
LM4128DQ1MF2.5 , Precision Micropower Series Voltage Reference
LM4128DQ1MF3.0 , Precision Micropower Series Voltage Reference
LM4130AIM5-2.0 ,Precision Micropower Low Dropout Voltage ReferenceLM4130 Precision Micropower Low Dropout Voltage ReferenceNovember 1999LM4130Precision Micropower Lo ..
LM2574DW-ADJ-LM2574N-5
EASY SWITCHER 0.5 A STEP-DOWN VOLTAGE REGULATOR
ORDERING INFORMATION
Order this document by LM2574/D
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE- - -
The LM2574 series of regulators are monolithic integrated circuits ideally
suited for easy and convenient design of a step–down switching regulator
(buck converter). All circuits of this series are capable of driving a 0.5 A load
with excellent line and load regulation. These devices are available in fixed
output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.
These regulators were designed to minimize the number of external
components to simplify the power supply design. Standard series of
inductors optimized for use with the LM2574 are offered by several different
inductor manufacturers.
Since the LM2574 converter is a switch–mode power supply, its efficiency
is significantly higher in comparison with popular three–terminal linear
regulators, especially with higher input voltages. In most cases, the power
dissipated by the LM2574 regulator is so low, that the copper traces on the
printed circuit board are normally the only heatsink needed and no additional
heatsinking is required.
The LM2574 features include a guaranteed ±4% tolerance on output
voltage within specified input voltages and output load conditions, and ±10%
on the oscillator frequency (±2% over 0°C to +125°C). External shutdown is
included, featuring 60 μA (typical) standby current. The output switch
includes cycle–by–cycle current limiting, as well as thermal shutdown for full
protection under fault conditions.
Features 3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions Adjustable Version Output Voltage Range, 1.23 to 37 V ±4% max over
Line and Load Conditions Guaranteed 0.5 A Output Current Wide Input Voltage Range: 4.75 to 40 V Requires Only 4 External Components 52 kHz Fixed Frequency Internal Oscillator TTL Shutdown Capability, Low Power Standby Mode High Efficiency Uses Readily Available Standard Inductors Thermal Shutdown and Current Limit Protection
Applications Simple and High–Efficiency Step–Down (Buck) Regulators Efficient Pre–regulator for Linear Regulators On–Card Switching Regulators Positive to Negative Converters (Buck–Boost) Negative Step–Up Converters Power Supply for Battery Chargers
