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MAX1776EUA from MAXIM  , MAXIM - Dallas Semiconductor 12pcs,24V, 600mA Internal Switch, 100% Duty Cycle, Step-Down Converter
Partno Mfg Dc Qty Available
MAX1776EUA MAXIM   N/a 12
MAX1776EUA from MAX, MAXIM - Dallas Semiconductor 54pcs , 8,24V, 600mA Internal Switch, 100% Duty Cycle, Step-Down Converter
MAX1776EUA from MAXIM, MAXIM - Dallas Semiconductor 160pcs , D,24V, 600mA Internal Switch, 100% Duty Cycle, Step-Down Converter

FeaturesThe MAX1776 high-efficiency step-down converter pro- Fixed 5V or Adjustable Outputvides an adjustable output voltage from 1.25V to V fromIN 4.5V to 24V Input Voltage Rangesupply voltages as high as 24V. An internal current-limit-ed 0.4Ω MOSFET delivers load currents up to 600mA. Up to 600mA Output CurrentOperation to 100% duty cycle minimizes dropout volt- Internal 0.4Ω P-Channel MOSFETage (240mV at 600mA). Efficiency Over 95%The MAX1776 has a low 15µA quiescent current toimprove light-load efficiency and conserve battery life. 15µA Quiescent Supply CurrentThe device draws only 3µA while in shutdown. 3µA Shutdown CurrentHigh switching frequencies (up to 200kHz) allow theuse of tiny surface-mount inductors and output capaci- 100% Maximum Duty Cycle for Low Dropouttors. The MAX1776 is available in an 8-pin µMAX pack- Current-Limited Architectureage, which uses half the space of an 8-pin SO. Forincreased output drive capability, use the MAX1626/ Thermal ShutdownMAX1627 step-down controllers, which drive an exter- Small 8-µMAX Packagenal P-channel MOSFET to deliver up to 20W.Applications Ordering InformationNotebook ComputersPART TEMP RANGE PIN-PACKAGEDistributed Power SystemsMAX1776EUA -40°C to +85°C 8 µMAXKeep-Alive SuppliesHand-Held DevicesTypical Operating Circuit Pin ConfigurationTOP VIEWVINSHDN INILIM LX V FB 1 8 OUTOUTGND 2 7 SHDNMAX1776MAX1776EUAILIM 3 6 ILIM2ILIM2 OUTLX 4 5 INµ MAXFB GNDµ MAX____ Maxim Integrated Products 1For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at .24V, 600mA Internal Switch, 100% Duty Cycle,Step-Down ConverterABSOLUTE MAXIMUM RATINGSIN, SHDN, ILIM, ILIM2 to GND ......-0.3V to 25V Continuous Power Dissipation (T = +70°C)ALX to GND.-2V to (V + 0.3V) 8-Pin µMAX (derate 4.1mW/°C above +70°C) ....330mWINOUT, FB to GND ...-0.3V to 6V Operating Temperature Range -40°C to +85°CPeak Input Current ... 2A Junction Temperature+150°CMaximum DC Input Current. 500mA Storage Temperature Range ..-65°C to +150°CLead Temperature (soldering, 10s) ......+300°CStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.ELECTRICAL CHARACTERISTICS(Circuit of Figure 1, V = +12V, SHDN = IN, T = 0°C to +85°C, unless otherwise noted.)IN APARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITSInput Voltage Range V 4.5 24 VINInput Supply Current I No load 15 28 µAINInput Supply Current in Dropout I No load 50 70 µAIN(DROP)Input Shutdown Current SHDN = GND 3 7 µAV rising 3.6 4.0 4.4INInput Undervoltage LockoutV VUVLOThresholdV falling 3.5 3.9 4.3INOutput Voltage (Preset Mode) V FB = GND 4.80 5.00 5.20 VOUTFeedback Set VoltageV 1.212 1.25 1.288 VFB(Adjustable Mode)OUT Bias Current V = 5.5V 1.65 3.5 6.25 µAOUTOUT Pin Maximum Voltage 5.5 VFB Bias Current I V = 1.3V -25 +25 nAFB FBFB Dual Mode™ Threshold Low 50 100 150 mVLX Switch Minimum Off-Time t 0.22 0.42 0.62 µsOFF(MIN)LX Switch Maximum On-Time t V = 1.3V 8 10 12 µsON(MAX) FBILIM = ILIM2 = GND 1.6 3.2ILIM = GND, ILIM2 = IN 0.8 1.6V = 6VINILIM = IN, ILIM2 = GND 0.4 0.8ILIM = ILIM2 = IN 0.4 0.8LX Switch On-Resistance R ΩLXILIM = ILIM2 = GND 1.9 3.8ILIM = GND, ILIM2 = IN 1.0 1.9V = 4.5VINILIM = IN, ILIM2 = GND 0.5 0.95ILIM = ILIM2 = IN 0.5 0.95ILIM = ILIM2 = GND 120 150 180ILIM = GND, ILIM2 = IN 240 300 360LX Current Limit I mALX(PEAK)ILIM = IN, ILIM2 = GND 480 600 720ILIM = ILIM2 = IN 960 1200 1440LX Zero-Crossing Threshold -75 +75 mVZero-Crossing Timeout LX does not rise above the threshold 30 µsT = +25°C1V = 24V, AINLX Switch Leakage Current µALX = GNDT = 0°C to +85°C10ADual Mode is a trademark of Maxim Integrated Products, Inc.2 _______MAX1776MAX177624V, 600mA Internal Switch, 100% Duty Cycle,Step-Down Converter

MAX1776EUA ,24V, 600mA Internal Switch, 100% Duty Cycle, Step-Down ConverterELECTRICAL CHARACTERISTICS(Circuit of Figure 1, V = +12V, SHDN = IN, T = 0°C to +85°C, unless other ..
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