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ML4425IH Datasheet(PDF) 4 Page - Micro Linear Corporation |
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ML4425IH Datasheet(HTML) 4 Page - Micro Linear Corporation |
4 / 16 page 4 ML4425 ELECTRICAL CHARACTERISTICS Unless otherwise specified,VDD = 12V ± 10%, RSENSE = 1W, CVCO = 10nF, CIOS = 100pF, RREF = 137kW, TA = Operating Temperature Range (Notes 1, 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS REFERENCE VREF Total Variation Line, Temp 6.5 6.9 7.5 V PWM OSCILLATOR Total Variation CT = 1nF 28 kHz Ramp Peak 3.9 V Ramp Valley 1.7 V Ramp Charging Current ? µA SPEED CONTROL LOOP SPEED SET Input Voltage Range 0 VREF V SPEED FB Input Voltage Range 0 VREF V SPEED COMP Output Current ±5 ±20 µA SPEED SET Error Amp Transconductance VSPEED SET = xV, VSPEED FB = yV 144 µ START-UP CAT Charging Current C Suffix 0.68 0.98 µA I Suffix 0.5 1.1 µA CAT Threshold Voltage 1.4 1.7 V CRT Charging Current C Suffix 0.68 0.98 µA I Suffix 0.5 1.1 µA CRT Threshold Voltage 1.4 1.7 V VOLTAGE CONTROLLED OSCILLATOR Frequency Range RVCO = 5V, SPEED FB = 6V 1.5 1.85 2.2 kHz Frequency vs. SPEED FB RVCO = 5V, 0.5V £ SPEED FB £ 7V 300 Hz/V CURRENT LIMIT ISENSE Gain V(ILIMIT) £ 2.5V 4.5 5.0 5.5 V/V One Shot OFF-Time CIOS = 100pF C Suffix 9 18 µs I Suffix 9 20 µs ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. VDD .......................................................................... 14V Logic Inputs (, SPEED FB, BRAKE) .......... GND - 0.3 to 7V All Other Inputs and Outputs .. GND -0.3V to VDD + 0.3V Output Current (LA, LB, LC, HA, HB, HC) ............ ±50mA Junction Temperature .............................................. 150ºC Storage Temperature Range ...................... –65ºC to 150ºC Lead Temperature (Soldering 10 sec.) ..................... 260ºC Thermal Resistance ( qJA) 28-Pin Narrow PDIP ......................................... 48ºC/W 28-Pin SOIC ..................................................... 75ºC/W 32-Pin TQFP ..................................................... 80ºC/W OPERATING CONDITIONS Temperature Range ML4425CX................................................. 0ºC to 70ºC ML4425IX ............................................... –40ºC to 85ºC VDD ......................................................... 10.8V to 13.2V |
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