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The SAP2845 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 0.5mA, 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.


Main feature
Optimized for off-line and DC to DC convertsLow start up current(<0.5mA)Automatic feed forward compensationPulse-by-Pulse current limitingEnhanced load response characteristicsUnder-voltage lockout with hysteresisDouble pulse SuppressionHigh current totem pole outputInternally trimmed bandgap reference500kHz operation


Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SAP2845SA SOP-8-225-1.27 SAP2845 Halogen free Tube
SAP2845SATR SOP-8-225-1.27 SAP2845 Halogen free Tape&Reel
Block Diagram

SAP2845 英文.png

Documents
title Types of Size (KB) date Download the latest English version
SAP2845 0 1970-01-01 SAP2845 Brief Datasheet