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型號： UC2842DR

類別： 集成電路

封裝： SOIC

描述： DESCRIPTION The UC1842/3/4/5 family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N Channel MOSFETs, is low in the off state. FEATURES ? Optimized For Off-line And DC To DC Converters ? Low Start Up Current (<1mA) ? Automatic Feed Forward Compensation ? Pulse-by-pulse Current Limiting ? Enhanced Load Response Characteristics ? Under-voltage Lockout With Hysteresis ? Double Pulse Suppression ? High Current Totem Pole Output ? Internally Trimmed Bandgap Reference ? 500khz Operation ? Low ROError Amp

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