UC2844 controller equivalent, current mode pwm controller.
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* Optimized For Off-line And DC To DC Converters Low Start Up Current (<1mA) Automatic Feed Forward Compen.
The corresponding thresholds for the UC1843 and UC1845 are 8.4V and 7.6V. The UC1842 and UC1843 can operate to duty cyc.
The UC1842/3/4/5 family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout f.
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