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SAP2845
CURRENT MODE PWM CONTROLLER

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 converts

Low start up current(<0.5mA)

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


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

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