HomedatasheetUC3845AD8

UC3845AD8 Datasheet

Current Mode PWM Controllers
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Description

The UC3845AD8 /3A/4A/5A family of control ICs is a pin for pin compati-ble improved version of the UC3842/3/4/5 family. Providing the nec-essary features to control current mode switched mode powersupplies, this family has the following improved features. Start up cur-rent is guaranteed to be less than 0.5mA. Oscillator discharge istrimmed to 8.3mA. During under voltage lockout, the output stagecan sink at least 10mA at less than 1.2V for VCC over 5V.The difference between members of this family are shown in the tablebelow. UC3845AD8 Features &bull; Optimized for Off-line and DC to DC Converters&bull; Low Start Up Current (<0.5mA)&bull; Trimmed Oscillator Discharge Current&bull; Automatic Feed Forward Compensation&bull; Pulse-by-Pulse Current Limiting&bull; Enhanced Load Response Characteristics
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":"+ 70 C "},{"Name":"Mounting Style","Value":"SMD/SMT"},{"Name":"Package / Case","Value":"SOIC-8"},{"Name":"Minimum Operating Temperature","Value":"0 C "},{"Name":"Output Current","Value":"1000 mA "},{"Name":"Output Voltage","Value":"4.90 V to 5.10 V "},{"Name":"Packaging","Value":"Tube "}]

Manufacturer information

DALLAS SEMICONDUCTOR
Warm Hint

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