HomedatasheetUC2844BD1

UC2844BD1 Datasheet

Current Mode PWM Controllers
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Description

The UC2844BD1 family ofcontrolICsprovidesthenecessary features to implement off-line or DC to DC fixed frequencycurrent mode control schemes with a minimal external parts count. Internally implemented circuits includea trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockoutfeaturingstart-upcurrent less than0.5mA,a precision reference trimmed for accuracy at the error ampinput, logicto insurelatchedoperation,a PWM comparatorwhich alsoprovidescurrent limit control,and a totempole output stage designed to source or sink high peakcurrent.Theoutputstage, suitable for driving N-Channel MOSFETs, is low in the offstate. UC2844BD1 Features • Trimmed oscillator for precise fre-• Quency control oscillator frequency guaranteed• At 250khz .current mode operation to 500khz automatic feed forward compensa. tion latching pwm for cycle-by-cycle• Current limiting internally trimmed reference with• Undervoltage lockout .high current totempoleoutput undervoltage lockout with hyster. esis lowstart-upandoperatingcurrent
Features

Parameters

[{"Name":"Switching Frequency","Value":"500 kHz "},{"Name":"Rise Time","Value":"50 ns"},{"Name":"Fall Time","Value":"50 ns"},{"Name":"Operating Supply Voltage","Value":"30 V "},{"Name":"Number of Outputs ","Value":"1"},{"Name":"Maximum Operating Temperature","Value":"+ 150 C "},{"Name":"Mounting Style ","Value":"SMD/SMT"},{"Name":"Package / Case ","Value":"SO-8 "}]

Manufacturer information

RECTRON SEMICONDUCTOR
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