TEXAS INSTRUMENTS  UC3843AN  CURRENT MODE PWM CONTROLLER, 30V, PDIP-8

TEXAS INSTRUMENTS UC3843AN

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Product Overview


The UC3843AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
  • Optimized for off-line and DC to DC converters
  • Low start up current (<0.5mA)
  • Trimmed oscillator discharge current
  • Automatic feed forward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load response characteristics
  • Under-voltage lockout with hysteresis
  • Double pulse suppression
  • High current totem pole output
  • Internally trimmed bandgap reference
  • Low RO error amp
  • Green product and no Sb/Br

Applications

Power Management
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Product Information


  • Input Voltage 25V
  • Output Voltage 15V
  • Output Current 1A
  • Supply Voltage Min 12V
  • Supply Voltage Max 25V
  • Controller IC Case Style DIP
  • No. of Pins 8Pins
  • Frequency 450kHz
  • Operating Temperature Min 0°C
  • Operating Temperature Max 70°C
  • Packaging Each
  • Power Dissipation Pd 1 W
  • MSL -
  • Supply Voltage Range 12V to 25V
  • SVHC No SVHC (15-Jun-2015)
  • Digital IC Case Style DIP

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  • CAD CadSoft_EAGLE (2.57KB) EN
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    Customer Reviews


    TEXAS INSTRUMENTS - UC3843AN - CURRENT MODE PWM CONTROLLER, 30V, PDIP-8 5 5 1 1
    Excellent Working excellent according to the manufacture parameters. October 2, 2014
    • 2015-06-11T15:22:07.821-05:00
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