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LX1672-03CLQ Datasheet(PDF) 4 Page - Microsemi Corporation |
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LX1672-03CLQ Datasheet(HTML) 4 Page - Microsemi Corporation |
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4 / 20 page  PRODUCTION DATA SHEET Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 4 Copyright © 2000 Rev. 1.0, 2005-08-10 LX1672 Multiple Output LoadSHARE™ PWM TM ® ELECTRICAL CHA RACTERISTICS Unless otherwise specified, the following specifications apply over the operating ambient temperature 0 °C ≤ T A ≤ 70°C except where otherwise noted and the following test conditions: VCC = 5V, VCCL = 5V, VCX = 12V, HOX = LOX = 3000pF Load. LX1672 Parameter Symbol Test Conditions Min Typ Max Units SWITCHING REGULATORS Input Voltage VCC 4.5 5.5 V Input Voltage VCCL, VCX 12 V Operation Current ICC Static and Dynamic 10 mA TA = 25°C 0.792 0.8 0.808 Reference Voltage VSS 0°C < TA < 70°C 0.784 0.816 V Line Regulation (Note 2) -1 1 % Load Regulation (Note 2) -1 1 % Minimum Pulse Width TSSOP Package 250 nS Minimum Pulse Width MLPQ Package 150 nS Maximum Duty Cycle LX1672-03 Load = 3000pF 85 % Maximum Duty Cycle LX1672-05 Load = 3000pF 75 % Maximum Duty Cycle LX1672-06 Load = 3000pF 70 % ERROR AMPLIFIERS Input Offset Voltage Vos Common Mode Input Voltage = 1V -6.0 6.0 mV DC Open Loop Gain 70 dB Unity Gain Bandwidth UGBW 16 MHz High Output Voltage VOH I Source = 2mA 3.5 3.8 V Low Output Voltage VOL I Sink = 10µA 200 400 mV Input Common Mode Range Input Offset Voltage < 20mV .1 3.5 V Input Bias Current IIN 0 and 3.5 V Common Mode Input Voltage 100 nA CURRENT SENSE Current Sense Bias Current ISET VCSX = VVSX – 0.3V , VVSX = 5V 45 50 55 μA Trip Threshold VTRIP Referenced to VSX , VVSX = 5V 260 300 340 mV Current Sense Delay TCSD 350 nS Current Sense Comparator Operating Current ICSX Current into VSX pins 2 5 mA OUTPUT DRIVERS – N-CHANNEL MOSFETS Low Side Driver Operating Current IVCCL Static 2.5 mA High Side Driver Operating Current IVCX Static 3 mA Drive Rise Time, Fall Time TRF CL = 3000pF 50 nS High Level Output Voltage VDH ISOURCE = 20mA, VCCL = 12V 10 11 V Low Level Output Voltage VDL ISINK = 20mA, VCCL = 12V 0.15 0.25 V OSCILLATOR PWM Switching Frequency LX1672-03 255 300 345 KHz PWM Switching Frequency LX1672-05 425 500 575 KHz PWM Switching Frequency FSW LX1672-06 510 600 690 KHz Ramp Amplitude VRAMP 1.25 VPP |
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