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LTC3803ES6-3 Datasheet(PDF) 2 Page - Linear Technology |
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LTC3803ES6-3 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 16 page  2 LTC3803-3 38033fa ORDER PART NUMBER (Note 1) VCC to GND Low Impedance Source .......................... – 0.3V to 8V Current Fed ...................................... 25mA into VCC* NGATE Voltage ......................................... – 0.3V to VCC VFB, ITH/RUN Voltages ..............................–0.3V to 3.5V SENSE Voltage ........................................... – 0.3V to 1V NGATE Peak Output Current (<10 μs)........................ 1A Operating Temperature Range (Note 2) LTC3803E-3 ....................................... – 40 °C to 85°C LTC3803I-3 ...................................... – 40 °C to 125°C Junction Temperature (Note 3) ............................ 125 °C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C LTC3803ES6-3 LTC3803IS6-3 TJMAX = 125 °C, θJA = 230°C/W ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION S6 PART MARKING LTCJS LTCJT Consult LTC Marketing for parts specified with wider operating temperature ranges. ITH/RUN 1 GND 2 VFB 3 6 NGATE 5 VCC 4 SENSE TOP VIEW S6 PACKAGE 6-LEAD PLASTIC TSOT-23 *LTC3803-3 internal clamp circuit self regulates VCC voltage to 9.5V. The ● indicates specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 °C. VCC = 8V, unless otherwise noted. (Note 2) ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VTURNON VCC Turn On Voltage ● 7.6 8.7 9.2 V VTURNOFF VCC Turn Off Voltage LTC3803E-3 ● 4.6 5.7 7 V LTC3803I-3 ● 4.4 5.7 7 V VHYST VCC Hysteresis (VTURNON – VTURN0FF) ● 13 V VCLAMP1mA VCC Shunt Regulator Voltage ICC = 1mA, VITH/RUN = 0V ● 8.3 9.4 10.3 V VCLAMP25mA VCC Shunt Regulator Voltage ICC = 25mA, VITH/RUN = 0V ● 8.4 9.5 10.5 V VMARGIN VCLAMP1mA – VTURNON Margin ● 0.05 0.6 V ICC Input DC Supply Current (Note 4) Normal Operation VITH/RUN = 1.3V 240 350 μA Start-Up VCC = VTURNON – 100mV 40 90 μA VITHSHDN Shutdown Threshold (at ITH/RUN) VCC = VTURNON – 100mV LTC3803E-3 ● 0.15 0.28 0.45 V LTC3803I-3 ● 0.10 0.28 0.45 V IITHSTART Start-Up Current Source VITH/RUN = 0V 0.2 0.3 0.4 μA VFB Regulated Feedback Voltage (Note 5) 0 °C ≤ TA ≤ 85°C 0.788 0.800 0.812 V LTC3803E-3: –40 °C ≤ TA ≤ 85°C ● 0.780 0.800 0.812 V LTC3803I-3: –40 °C ≤ TA ≤ 125°C ● 0.780 0.800 0.820 V VIMAX Peak Current Sense Voltage RSL = 0 (Note 6) LTC3803E-3 ● 90 100 115 V LTC3803I-3 ● 85 100 115 V gm Error Amplifier Transconductance ITH/RUN Pin Load = ±5μA (Note 5) 200 333 500 μA/V ΔVO(LINE) Output Voltage Line Regulation VTURNOFF < VCC < VCLAMP (Note 5) 0.05 mV/V IFB VFB Input Current (Note 5) 10 50 nA fOSC Oscillator Frequency VITH/RUN = 1.3V 270 300 330 kHz Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ |
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