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LT1071HVCT Datasheet(PDF) 11 Page - Linear Technology |
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LT1071HVCT Datasheet(HTML) 11 Page - Linear Technology |
11 / 12 page 11 LT1070/LT1071 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. TYPICAL APPLICATIONS (Note that maximum output currents are divided by 2 for the LT1071) T5 (TO-220) 0398 0.028 – 0.038 (0.711 – 0.965) 0.057 – 0.077 (1.448 – 1.956) 0.135 – 0.165 (3.429 – 4.191) 0.700 – 0.728 (17.78 – 18.491) 0.045 – 0.055 (1.143 – 1.397) 0.095 – 0.115 (2.413 – 2.921) 0.013 – 0.023 (0.330 – 0.584) 0.620 (15.75) TYP 0.155 – 0.195 (3.937 – 4.953) 0.152 – 0.202 (3.861 – 5.131) 0.260 – 0.320 (6.60 – 8.13) 0.165 – 0.180 (4.191 – 4.572) 0.147 – 0.155 (3.734 – 3.937) DIA 0.390 – 0.415 (9.906 – 10.541) 0.330 – 0.370 (8.382 – 9.398) 0.460 – 0.500 (11.684 – 12.700) 0.570 – 0.620 (14.478 – 15.748) 0.230 – 0.270 (5.842 – 6.858) K4(TO-3) 0695 72 ° 18 ° 0.495 – 0.525 (12.57 – 13.34) R 0.470 TP P.C.D. 0.167 – 0.177 (4.24 – 4.49) R 0.151 – 0.161 (3.84 – 4.09) DIA 2 PLC 0.655 – 0.675 (16.64 – 19.05) 1.177 – 1.197 (29.90 – 30.40) 0.038 – 0.043 (0.965 – 1.09) 0.060 – 0.135 (1.524 – 3.429) 0.320 – 0.350 (8.13 – 8.89) 0.420 – 0.480 (10.67 – 12.19) 0.760 – 0.775 (19.30 – 19.69) Flyback Converter 1070/71 TA08 *REQUIRED IF INPUT LEADS ≥ 2" a b VSNUB C2 0.15 µF R3 1.5k R1 3.74k R2 1.24k C4* 100 µF VIN 20V TO 30V VOUT 5V 6A VSW VC VIN LT1070 GND FB C3 0.47 µF C1 2000 µF D2 D1 R4 1N • • + + PRIMARY FLYBACK VOLTAGE = LT1070/LT1071 SWITCH VOLTAGE AREA “a” = AREA “b” TO MAINTAIN ZERO DC VOLTS ACROSS PRIMARY SECONDARY VOLTAGE AREA “c” = AREA “d” TO MAINTAIN ZERO DC VOLTS ACROSS SECONDARY PRIMARY CURRENT VOUT + VF N 0V VIN CLAMP TURN-ON SPIKE C4 200 µF L2 10 µH OPTIONAL FILTER c ∆I d VOUT + VF (N)(VIN) IPRI 0V 0 LT1070 SWITCH CURRENT SNUBBER DIODE CURRENT IPRI IPRI t = (IPRI)(LL) VSNUB SECONDARY CURRENT IPRI N 0 0 N = 1/3 PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted. T Package 5-Lead Plastic TO-220 (Standard) (LTC DWG # 05-08-1421) K Package 4-Lead TO-3 Metal Can (LTC DWG # 05-08-1311) |
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