HomedatasheetUC3843N

UC3843N Datasheet

Current Mode PWM Controllers
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Description

The UC1842/UC3843N/4/5 family of control devices 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 1 mA, 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. UC3843N Features &bull; Low Start-Up Current (<1 mA)&bull; Automatic Feed Forward Compensation&bull; Pulse-by-Pulse Current Limiting&bull; Enhanced Load Response Characteristics&bull; Under-Voltage Lockout With Hysteresis&bull; Double Pulse Suppression&bull; High Current Totem Pole Output&bull; Internally Trimmed Bandgap Reference
Features

Parameters

[{"Name":"Switching Frequency","Value":"500 kHz "},{"Name":"Rise Time","Value":"50 ns "},{"Name":"Fall Time","Value":"50 ns "},{"Name":"Number of Outputs","Value":"1"},{"Name":"Maximum Operating Temperature","Value":"+ 70 C "},{"Name":"Mounting Style","Value":"Through Hole "},{"Name":"Package / Case","Value":"PDIP-8 "},{"Name":"Packaging","Value":"Tube "}]

Manufacturer information

SEIKO INSTRUMENTS
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