UC3845AD8 Datasheet

Current Mode PWM Controllers


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


[{"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

Warm Hint

What HQEW.NET can offer here?
1. www.hqew.net/product-data provides numerous and various electronic part data-sheet and technology document here., if it can't be shown, Please feel free to ask us for it.
2. www.hqew.net/news provides the latest information of the semiconductor industry or the electronics industry for you.
3. www.hqew.net provides verified suppliers and numerous electronic components for your demand and business.
Any questions you can contact us by email cs@hqew.net.
Request for Datasheet

  • Part No     :
  • Your Email:
  • Content     :

related datasheet
Browse Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9
Contact Us


One to One Customer Service