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 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 |
|