NCP1203 - PWM Current-Mode Controller
Pin No.
Pin Name Function 1 Adj Adjust the skipping peak current 2 FB Sets the peak current setpoint 3 CS Current sense input 4 GND The IC ground 5 Drv Driving pulses 6 VCC 7 NC Supplies the IC * 8 HV Ensure a clean and lossless startup sequence Pin Description Thi
NCP1203 PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Circuit Protection Housed in SOIC 8 or PDIP 8 package, the NCP1203 represents a major leap toward ultra compact Switchmode Power Supplies and represents an excellent candidate to replace the UC384X devices.
Due to its proprietary SMARTMOS™ Very High Voltage Technology, the circuit allows the implementation of complete off line AC DC adapters, battery charger and
NCP1203 Features
* a high
* voltage startup FET which ensures a clean and loss
* less startup sequence. Its current
* mode control naturally provides good audio
* susceptibility and inherent pulse
* by
* pulse control. When the current setpoint falls below a given value, e.g. the ou
