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NCP1240BD065R2G Datasheet(PDF) 3 Page - ON Semiconductor |
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NCP1240BD065R2G Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 45 page NCP1240 www.onsemi.com 3 SIMPLIFIED INTERNAL BLOCK SCHEMATIC Figure 2. Simplified Internal Block Schematic freq folback jittering Skip_CMP SkipB 4uMho Ramp_OTA CSref Soft Start timer Reset Q Set Qb Clamp FB CS DRV GND VCC PWM_CMP Vfb(reg) MAX_ton PWM V to I Iopc = 0.5u*(Vhv−125) Off_mode_CMP1 ICstart FBbuffer VCC UVLO_CMP LATCH VccOVP OTP OTP_CMP OVP_CMP HV Brown_Out VccOVP_CMP Vdd Set Q Reset Qb Latch Brown_Out RESET OVP AC_Off UVLO VCC Vcc_Int IC stopB Vhv DC sample SG & X2 & Vcc Vdd reg Vdd Vcc regulator PowerOnReset_CMP control current source TSD RESET ON_CMP STOP_CMP VccON VccMIN GoToOffMode timer 500ms Set Q Reset Qb Off_mode_CMP2 FM input OSC 65kHz PFM input Square output Saw output ton_max output 3.0V Vdd Fault timer TSD Fault Ilimit_CMP LEB 120ns CSstop_CMP TSD Latch RESET Ilimit MAX_ton Autorecovery timer Brown_Out Reset Q Set Qb IC stop Transient timer up/down Fault Itran_CMP Itran 4 events timer Reset Q Set Qb 50 us Filter 350 us Filter 10 us Filter Dual HV Start−up SoftStart_CMP Enable SS_end |
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