AIC3843
FEATURES
Low Start-Up Current (300µA Typical) Internal Precision Reference. 500KHz Current-Mode Operation. Pulse-by-Pulse Current Limiting. Automatic Feed-Forward pensation. Optimized for Off-line and DC/DC Converters. Under-voltage Lockout with Hysteresis. Double Pulse Suppression. High Current Totem Pole Output.
DESCRIPTION
The AIC3843 control IC provides the features that are necessary to implement off-line or DC/DC Converter fixed-frequency current-mode schemes with a minimum number of external ponents. This integrated circuits features an under-voltage lockout (UVLO) with approximately 300µA start-up current, a precision reference trimmed for accuracy at the error amplifier input, high gain error amplifier, current sensing parator, logic to insure latched operation, and a totem-pole output stage designed to source or sink high peak current. The output stage, suitable for driving the Nchannel MOSFETs, is low in the off state.
APPLICATIONS
AC/DC Off-line Converter. DC/DC Off-line...
