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LT3506 Datasheet(PDF) 3 Page - Linear Technology |
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LT3506 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 30 page  LT3510 3 3510fe ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. PARAMETER CONDITIONS MIN TYP MAX UNITS Feedback Voltage Line Regulation VVIN1/2 = 3V to 25V l –1 0 1 % Feedback Voltage Offset Ch 1 to Ch 2 VVC1/2 = 1V l –16 0 16 mV Feedback Bias Current Ch 1/Ch 2 VFB1/2 = 0.8V, VVC1/2 = 1V l –200 75 200 nA Error Amplifier gm Ch 1/Ch 2 VVC1/2 = 1V, IVC1/2 = ±5μA l 150 275 450 μmho Error Amplifier Gain Ch 1/Ch 2 1000 V/V Error Amplifier to Switch Gain Ch 1/Ch 2 2.2 A/V Error Amplifier Source Current Ch 1/Ch 2 VFB1/2 = 0.6V, VVC1/2 = 1V 10 15 25 μA Error Amplifier Sink Current Ch 1/Ch 2 VFB1/2 = 1V, VVC1/2 = 1V 15 20 30 μA Error Amplifier High Clamp Ch 1/Ch 2 VFB1/2 = 0.7V 1.75 2.0 2.25 V Error Amplifier Switching Threshold Ch 1/Ch 2 VOUT1/2 = 5V, RT/SYNC = 133k 0.5 0.7 1.0 V Soft-Start Source Current Ch 1/Ch 2 VFB1/2 = 0.6V, VSS1/2 = 0.4V l 2 3 4.2 μA Soft-Start VOH Ch 1/Ch 2 VFB1/2 = 0.9V 1.9 2 2.4 V Soft-Start Sink Current Ch 1/Ch 2 VFB1/2 = 0.6V, VSS1/2 = 1V 200 600 1000 μA Soft-Start VOL Ch 1/Ch 2 VFB1/2 = 0V 50 80 125 mV Soft-Start to Feedback Offset Ch 1/Ch 2 VVC1/2 = 1V, VSS1/2 = 0.4V l –16 0 16 mV Soft-Start Sink Current Ch 1/Ch 2 POR VSS1/2 = 0.4V (Note 4), VVC = 1V 0.5 1.5 2 mA Soft-Start POR Threshold Ch 1/Ch 2 VFB1/2 = 0V (Note 4) 55 80 105 mV Soft-Start Switching Threshold Ch 1/Ch 2 VFB1/2 = 0V 30 50 70 mV Power Good Leakage Ch 1/Ch 2 VFB1/2 = 0.9V, VPG1/2 = 25V, VVIN1/2 = 25V, VOUT = 5V 0 1 μA Power Good Threshold Ch 1/Ch 2 VFB1/2 Rising, PG1/2 = 20k to 5V l 87 90 93 % Power Good Hysteresis Ch 1/Ch 2 VFB1/2 Falling, PG1/2 = 20k to 5V 20 30 50 mV Power Good Sink Current Ch 1/Ch 2 VFB1/2 = 0.65V, VPG1/2 = 0.4V 400 800 1200 μA Power Good Shutdown Sink Current Ch 1/Ch 2 VVIN1/2 = 2V, VFB1/2 = 0V, VPG1/2 = 0.4V 10 50 100 μA RT/SYNC Reference Voltage VFB1/2 = 0.9V, IRT/SYNC = –40μA 0.93 0.975 1 V Switching Frequency RT/SYNC = 133k, VFB1/2 = 0.6V, VBST1/2 = VSW + 3V RT/SYNC = 15.4k, VFB1/2 = 0.6V, VBST1/2 = VSW + 3V 200 1.2 250 1.5 300 1.8 kHz MHz Switching Phase Angle Ch A to Ch B RT/SYNC = 133k, VFB1/2 = 0.6V, VBST1/2 = VSW + 3V 120 180 210 Deg Minimum Boost for 100% Duty Cycle Ch 1/Ch 2 VFB1/2 = 0.7V, IRT/SYNC = –35μA (Note 5), VOUT = 0V 1.7 2 V SYNC Frequency Range VBST1/2 = VSW + 3V 250 1500 kHz SYNC Switching Phase Angle Ch A to Ch B SYNC = 250kHz, VBST1/2 = VSW + 3V 120 180 210 Deg IND + VOUT Current Ch 1/Ch 2 VVOUT1/2 = 0V, VFB1/2 = 0.9V VVOUT1/2 = 5V 40 70 0 100 1 μA μA IND to VOUT Maximum Current Ch 1/Ch 2 VVOUT1/2 = 0.5V (Note 6), VFB1/2 = 0.7V, VBST1/2 = 20V VVOUT1/2 = 5V (Note 6), RT/SYNC = 133k, VBST1/2 = 20V 2.25 2.5 2.8 2.8 4 4 A A Switch Leakage Current Ch 1/Ch 2 VSW1/2 = 0V, VVIN1/2 = 25V l 050 μA Switch Saturation Voltage Ch 1/Ch 2 ISW1/2 = 2A, VBST1/2 = 20V, VFB1/2 = 0.7V l 250 400 mV Boost Current Ch 1/Ch 2 ISW1/2 = 2A, VBST1/2 = 20V, VFB1/2 = 0.7V 25 50 100 mA Minimum Boost Voltage Ch 1/Ch 2 ISW1/2 = 2A, VBST1/2 = 20V, VFB1/2 = 0.7V (Note 7) 1.4 2.5 V Note 2: The LT3510EFE is guaranteed to meet performance specifications from 0°C to 125°C junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. VVIN1/2 = 15V, VBST1/2 = open, VRT/SYNC = 2V, VVOUT1/2 = open, unless otherwise specified. |
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