UC3842AN PWM Controller, 500 kHz 8-Pin, PDIP

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UC3842AN PWM Controller, 500 kHz 8-Pin, PDIP The UC3842/UC3843/UC3844/UC3845 are fixed frequency current-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components ,These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator and a high current totempole output for driving a Power MOSFET The UC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off), The UC3843 and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844 and UC3845 can operate with 50% duty cycle. Specifications: Attribute Value Maximum Switching Frequency 500 kHz Output Current 1 A Number of Outputs 1 Control Method Current Fall Time 50ns Mounting Type Through Hole Rise Time 50ns Package Type PDIP Topology Boost, Buck, Flyback, Forward Pin Count 8 Maximum Duty Cycle 100% Dimensions 9.81 x 6.35 x 4.57mm Length 9.81mm PWM Controller Type Current Mode Width 6.35mm Height 4.57mm Minimum Operating Temperature 0 °C Maximum Operating Temperature +70 °C Package Includes: 1x UC3842 Documents: UC3842AN Datasheet Related Products: Integrated Circuits (ICs)