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LT3743EFETRPBF Datasheet(PDF) 11 Page - Linear Technology |
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LT3743EFETRPBF Datasheet(HTML) 11 Page - Linear Technology |
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11 / 28 page  LT3743 11 3743f BLOCK DIAGRAM PWM COMPARATOR HIGH SIDE DRIVER CBOOT HG SW LG 3k LOW SIDE DRIVER RQ S gm AMP gm = 450μA/V RO = 4M IOUT = 40μA OSCILLATOR 2V REFERENCE 5.5μA 90k 1.5V CURRENT MIRROR SYNC RT 16 CTRL_H 6 CTRL_L CTRL BUFFER VOLTAGE REGULATOR AMP OPEN-LED COMPARATOR 7 SS 8 VCL 13 VCH 14 CTRL_SEL 17 PWM 18 CTRL_T 4 VREF 3 EN/UVLO VIN 2 25 VCC_INT 27 VIN 28 23 24 26 SENSE+ 15 SYNCRONOUS CONTROLLER INTERNAL REGUALTOR AND UVLO 2nF 100nF 9nF 40μF 0.1μF 1mF 1mF 10A LED 2.2μH RS 5mΩ VOUT 10μF VIN SYNC 402k 133k 82.5k – + 11 SENSE– 12 FB 10 PWMGL 10k 1V 1.3V 2.5Ω 2.5Ω 40.2k 34k 9nF 34k 22 PWMGH 3743 F01 19 Figure 1. Block Diagram (QFN Package) |
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