KA3842 - SMD

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SCIx1132
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The 3842A(AM)/43A(AM)/44A(AM)/45A(AM) are fixed frequency current mode PWM controllers. They are specially designed for OFF−Line and DC to DC converter applications with minimal external components. Internally implemented circuits include a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Protection circuitry includes built undervoltage lockout and current limiting. The 3842A(AM) and 3844A(AM) have UVLO thresholds of 16 V (on) and 10 V (off). The corresponding thresholds for the 3843A(AM)/45A(AM) are 8.4V (on) and 7.6V (off). The MIK3842A(AM) and MIK3843A(AM) can operate within 100% duty cycle. The 3844A(AM) and UC3845A(AM) can operate within 50% duty cycle. The 384XA(AM) has Start-Up Current 0.17mA (typ).

More Information
Brand Generic
GTIN 1,
IC type N/A
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