NCP1342 Series

Quasi-Resonant Flyback Controller with Valley Lock-Out Switching

Catalog

Quasi-Resonant Flyback Controller with Valley Lock-Out Switching

Part	Control Features	Output Isolation	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching	Fault Protection	Package / Case	Package / Case	Package / Case [x]	Package / Case [y]	Voltage - Breakdown	Mounting Type	Voltage - Start Up	Supplier Device Package	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Topology
ON Semiconductor NCP1342AMDADGD1R2G	Frequency Control Soft Start	Isolated	-40 °C	125 ¯C	500 kHz	Current Limiting Over Load Over Power Over Temperature Over Voltage Short Circuit	10-SOP	9 PC Pad	0.154 in	3.9 mm	700 V	Surface Mount	17 V	9-SOIC	28 V	9 V	Flyback
ON Semiconductor NCP1342ANACCED1R2G	Frequency Control Soft Start	Isolated	-40 °C	125 ¯C	500 kHz	Current Limiting Over Load Over Power Over Temperature Over Voltage Short Circuit	10-SOP	9 PC Pad	0.154 in	3.9 mm	700 V	Surface Mount	17 V	9-SOIC	28 V	9 V	Flyback
ON Semiconductor NCP1342DADBDD1R2G	EN Frequency Control Soft Start Sync	Isolated	-40 °C	125 ¯C	500 kHz	Current Limiting Over Load Over Power Over Temperature Over Voltage Short Circuit	10-SOP	9 PC Pad	0.154 in	3.9 mm		Surface Mount	17 V	9-SOIC	28 V	9 V	Flyback
ON Semiconductor NCP1342AMDCDHD1R2G	Frequency Control Soft Start	Isolated	-40 °C	125 ¯C	500 kHz	Current Limiting Over Load Over Power Over Temperature Over Voltage Short Circuit	10-SOP	9 PC Pad	0.154 in	3.9 mm	700 V	Surface Mount	17 V	9-SOIC	28 V	9 V	Flyback
ON Semiconductor NCP1342ENACEFD1R2G	Frequency Control Soft Start	Isolated	-40 °C	125 ¯C	500 kHz	Current Limiting Over Load Over Power Over Temperature Over Voltage Short Circuit	10-SOP	9 PC Pad	0.154 in	3.9 mm	700 V	Surface Mount	17 V	9-SOIC	28 V	9 V	Flyback
ON Semiconductor NCP1342ANDCDAD1R2G	Frequency Control Soft Start	Isolated	-40 °C	125 ¯C	500 kHz	Current Limiting Over Load Over Power Over Temperature Over Voltage Short Circuit	10-SOP	9 PC Pad	0.154 in	3.9 mm	700 V	Surface Mount	17 V	9-SOIC	28 V	9 V	Flyback
ON Semiconductor NCP1342ANDAAD1R2G	EN Frequency Control Soft Start Sync	Isolated	-40 °C	125 ¯C	500 kHz	Current Limiting Over Load Over Power Over Temperature Over Voltage Short Circuit	10-SOP	9 PC Pad	0.154 in	3.9 mm		Surface Mount	17 V	9-SOIC	28 V	9 V	Flyback
ON Semiconductor NCP1342BMDCDD1R2G	Frequency Control Soft Start	Isolated	-40 °C	125 ¯C	500 kHz	Current Limiting Over Load Over Power Over Temperature Over Voltage Short Circuit	10-SOP	9 PC Pad	0.154 in	3.9 mm	700 V	Surface Mount	17 V	9-SOIC	28 V	9 V	Flyback

Catalog

Quasi-Resonant Flyback Controller with Valley Lock-Out Switching

Key Features

• Minimum Peak Current Modulation for Rapid Frequency Foldback (RFF)

• QR Frequency Jittering

• Quiet-Skip Technology

• Integrated HV Startup with Brownout Protection

• Valley Switching Operation with Valley Lockout

• Integrated X2 Capacitor Discharge Capability

• NTC Compatible Fault Pin

• High Drive Capability: -500 mA / +800 mA

• Latch input for OVP and OTP implementation