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E-UC3843BN

PWM Controller, 25V-12V supply, 250 kHz, 13.5V/200mA out, DIP-8

STMICROELECTRONICS E-UC3843BN
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Manufacturer Part No:
E-UC3843BN
Order Code:
9882847
Technical Datasheet:
E-UC3843BN   Datasheet
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Product Overview

The E-UC3843BN is a high performance current mode PWM controller in 8 pin DIP package. This PWM controller provides necessary features to implement offline or DC to DC fixed frequency current mode control schemes with minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise duty cycle control, undervoltage lockout featuring start up current less than 0.5mA, precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, PWM comparator provides current limit control and totem pole output stage designed to source or sink high peak current. The output stage is suitable for driving N channel MOSFETs in offstate. The E-UC3843BN can operate to duty cycles approaching 100%.
  • Oscillator frequency guaranteed at 250KHz
  • Current mode operation to 500KHz
  • Automatic feed forward compensation
  • Latching PWM for cycle by cycle current limiting
  • Internally trimmed reference with undervoltage lockout
  • High current totem pole output
  • Undervoltage lockout with hystersis
  • Low start up and operating current
  • Operating junction temperature range from -40°C to 150°C

Applications

Power Management

Product Information

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15V

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13.5V

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200mA

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12V

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25V

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DIP

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8Pins

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250kHz

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0°C

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70°C

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-

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-

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-
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Technical Docs (2)

CAD Downloads

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CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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