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LT1309 Datasheet(PDF) 2 Page - Linear Technology |
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LT1309 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 8 page  2 LT1309 A G A U A R BSOLUTEXI TI S VCC Voltage............................................................... 7V VSW Voltage ............................................................ 20V VSENSE Voltage ....................................................... 20V VON/OFF Voltage......................................................... 7V VSEL Voltage ............................................................. 7V ILIM Voltage .............................................................. 7V Maximum Power Dissipation ............................ 500mW Operating Temperature Range ..................... 0 °C to 70°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C PACKAGE/ORDER I FOR ATIO ORDER PART NUMBER S8 PART MARKING ELECTRICAL C C HARA TERISTICS T A = 25°C, VCC = 5V, VON/OFF = 3V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IQ Quiescent Current VSENSE = 12V 650 900 µA Quiescent Current, Shutdown VON/OFF = 0.2V 9 15 µA Input Voltage Range 2 6 V Output Sense Voltage q 11.5 12 12.6 V Output Referred Comparator Hysteresis 35 mV fOSC Oscillator Frequency Current Limit Not Asserted 400 500 700 kHz DC Maximum Duty Cycle q 80 85 92 % tON Switch ON Time 1.7 µs Reference Line Regulation 2V < VIN < 6V 0.06 0.15 %/V VCESAT Switch Saturation Voltage ISW = 0.5A 230 350 mV Switch Leakage Current VSW = 12V, Switch Off 0.1 10 µA Switch Current Limit VIN = 5V, Soft Start Floating 400 600 900 mA VIN = 3V, Soft Start Floating 450 650 950 mA Soft Start Current Soft Start Grounded 80 120 µA ON/OFF Input Voltage Low 0.8 V ON/OFF Input Voltage High 1.6 V ON/OFF Bias Current VON/OFF = 5V 16.0 24.0 µA VON/OFF = 3V 8.0 14.0 µA VON/OFF = 0V 0.1 1.0 µA Sense Pin Input Current 50.0 90 µA VON/OFF = 0.2V 0.1 1 µA VPP VALID Threshold VSENSE Rising (High to Low Transition) VSENSE – 200mV VPP VALID Output Voltage Low ISINK = 100µA 0.13 0.3 V VPP VALID Output Voltage High ISOURCE = 2.5µA 4 4.5 V LT1309CS8 1309 TJMAX = 150°C, θJA = 150°C/W Consult factory for Industrial and Military grade parts. The q denotes specifications which apply over the full operating temperature range. 1 2 3 4 8 7 6 5 TOP VIEW ON/OFF SENSE VPP VALID GND SOFT START VCC PGND VSW S8 PACKAGE 8-LEAD PLASTIC SO |
Similar Part No. - LT1309_15 |
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Similar Description - LT1309_15 |
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