CURRENT MODE PWM CONTROL CIRCUITS
DESCRIPTION
The UTC UC3842A/3843A provide the necessary functions to
implement off-line or DC to DC fixed frequency current mode ,
controlled switching circuits with minimal external components.
FEATURES
*Low Start Up Current ( Typical 0.12mA )
*Automatic Feed Forward Compensation
*Pulse-by-Pulse Current Limiting
*Under-voltage Lockout with Hysteresis
*Double Pulse Suppression
*High Current Totem Pole Output to Drive MOSFET Directly
*Internally Trimmed Band Gap Reference
*500kHz Operation |