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LT3751EUFD-TR Datasheet(PDF) 9 Page - Linear Technology |
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LT3751EUFD-TR Datasheet(HTML) 9 Page - Linear Technology |
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9 / 28 page  LT3751 9 3751f BLOCK DIAGRAM + FB CSN CSP LVGATE HVGATE CLAMP 3751 BD START-UP ONE SHOT CHARGE VCC OTLO MASTER LATCH S Q R Q ENABLE GATE DRIVER ON OFF DONE FAULT 100k 10μF 100k S Q R Q VCC 12V INTERNAL UVLO 3.8V VCC – + – + – + – + – + 55V 55V UVLO1 OVLO1 UVLO2 OVLO2 55V 55V RUVLO1 191k RUVLO2 191k ROVLO1 240k ROVLO2 240k 1.22V REFERENCE UVLO/OVLO COMPARATORS RBG 1.33k GND RBG TO VOUT COMPARATOR VOUT COMPARATOR DCM ONE SHOT DCM COMPARATOR 26kHz ONE SHOT CLOCK S R Q Q COUNTER 26kHz ONE SHOT CLOCK SWITCH LATCH 0.98V REFERENCE DIFF. AMP COMPARATOR WITH INTERNAL 60V CLAMPS 1.22V REFERENCE GATE DRIVE CIRCUITRY 60V RVOUT 60V RDCM – + – + – + RESET CLK COUNT +– +– TIMING AND PEAK CURRENT CONTROL 26kHz ONE SHOT CLOCK MODE CONTROL DIE TEMP 160ºC 1.22V REFERENCE • • 60V RVOUT 40.2k RDCM 18.2k M1 VCC RSENSE 12mΩ ERROR AMP A1 11mV TO 106mV MODULATION 106mV 162mV RVTRANS RVTRANS 40.2k 10μF 47μF ×2 D1 T1 1:10 + VOUT 450V COUT RFBH 3.65M RFBL 10k VTRANS 12V VTRANS VCC TO CHARGE 1-SHOT VCC VCC VDRAIN 10nF AUXILIARY MAIN FAULT LATCH |
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