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      DC Switching Regulators

      DC Switching Regulators
      ModelDescriptionBrandLeadingConditionPriceAction
      DC Switching Regulators
      MIC4575-5.0WU
      General DescriptionThe MIC4575 is a series of easy to use fixed and adjustable BiCMOS step-down (buck) switch-mode voltage regulators. The 200kHz MIC4575 duplicates the pinout and function of the 52kHz LM2575. The higher switching frequency may allow up to a 2:1 reduction in output filter inductor size.The MIC4575 is available in 3.3V, and 5V fixed output versions or a 1.23V to 20V adjustable output version. Both versions are capable of driving a 1A load with excellent line and load regulation.Features• Fixed 200kHz operation• 3.3V, 5V, and adjustable output versions• Voltage over specified line and load conditions:• Fixed version: ±3% max. output voltage• Adjustable version: ±2% max. feedback voltage• Guaranteed 1A switch current• Wide 4V to 24V input voltage range• Wide 1.23V to 20V output voltage range• Requires minimum external components• < 200µA typical shutdown mode• 75% efficiency (adjustable version > 75% typical)• Standard inductors and capacitors are25% of typical LM2575 values• Thermal shutdown• Overcurrent protection• 100% electrical thermal limit burn-inApplications• Simple high-efficiency step-down (buck) regulator• Efficient pre-regulator for linear regulators• On-card switching regulators• Positive-to-negative converter (inverting buck-boost)• Battery charger• Negative boost converter• Step-down 6V to 3.3V for Intel Pentium® and similar microprocessors
      		OTHERIn StockNew Sealed Under Guarantee
      MIC2171BT
      General DescriptionThe MIC2171 is a complete 100kHz SMPS current-mode controller with an internal 65V 2.5A power switch.Although primarily intended for voltage step-up applications, the floating switch architecture of the MIC2171 makes it practical for step-down, inverting, and Cuk configurations as well as isolated topologies.Operating from 3V to 40V, the MIC2171 draws only 7mA of quiescent current, making it attractive for battery operated supplies.The MIC2171 is available in a 5-pin TO-220 or TO-263 for –40°C to +85°C operation.Features• 2.5A, 65V internal switch rating• 3V to 40V input voltage range• Current-mode operation, 2.5A peak• Internal cycle-by-cycle current limit• Thermal shutdown• Twice the frequency of the LM2577• Low external parts count• Operates in most switching topologies• 7mA quiescent current (operating)• Fits LT1171/LM2577 TO-220 and TO-263 socketsApplications• Laptop/palmtop computers• Battery operated equipment• Hand-held instruments• Off-line converter up to 50W(requires external power switch)• Pre-driver for higher power capability
      		OTHERIn StockNew Sealed Under Guarantee
      LM2575BT
      The LM2575BT series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3V, 5V, 12V, or 15V fixed output. Adjustable versions have an output voltage range from 1.23V to 37V. Both versions are capable of driving a 1A load with excellent line and load regulation.These regulators are simple to use because they require a minimum number of external components and include internal frequency compensation and a fixed-frequency oscillator.The LM2575BT series offers a high efficiency replacement for popular three-terminal adjustable linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.A standard series of inductors available from several different manufacturers are ideal for use with the LM2575BT series. This feature greatly simplifies the design of switch-mode power supplies.The feedback voltage is guaranteed to ±2% tolerance for adjustable versions, and the output voltage is guaranteed to ±3% for fixed versions, within specified input voltages and output load conditions. The oscillator frequency is guaranteed to ±10%. External shutdown is included, featuring less than 200µA standby current. The output switch includes cycle-by-cycle current limiting and thermal shutdown for full protection under fault conditions.
      		OTHERIn StockNew Sealed Under Guarantee
      LM2576-5.0BT
      General DescriptionThe LM2576 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3V, 5V, or 12V fixed output. Adjustable versions have an output voltage range from 1.23V to 37V. Both versions are capable of driving a 3A load with excellent line and load regulation.Features• 3.3V, 5V, 12V, and adjustable output versions• Voltage over specified line and load conditions:Fixed version: ±3% max. output voltageAdjustable version: ±2% max. feedback voltage• Guaranteed 3A output current• Wide input voltage range:4V to 40V• Wide output voltage range1.23V to 37V• Requires only 4 external components• 52kHz fixed frequency internal oscillator• Low power standby mode IQ typically < 200µA• 80% efficiency (adjustable version typically > 80%)• Uses readily available standard inductors• Thermal shutdown and current limit protection• 100% electrical thermal limit burn-inApplications• Simple high-efficiency step-down (buck) regulator• Efficient pre-regulator for linear regulators• On-card switching regulators• Positive to negative converter (inverting Buck-Boost)• Isolated Flyback Converter using minimum number ofexternal components• Negative Boost Converter
      		OTHERIn StockNew Sealed Under Guarantee
      TC115331EMTTR
      		OTHERIn StockNew Sealed Under Guarantee
      0.467262s