UC3845N PWM Controller, 500 kHz 8-Pin, PDIP
EGP 20
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UC3845N 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: Maximum Switching Frequency 500 kHz Output Current 1 A Control Method Current Number of Outputs 1 Mounting Type Through Hole Fall Time 50ns Rise Time 50ns Package Type PDIP Topology Boost, Buck, Flyback, Forward Pin Count 8 Dimensions 9.81 x 6.35 x 4.57mm Maximum Duty Cycle 50% PWM Controller Type Current Mode Length 9.81mm Width 6.35mm Height 4.57mm Minimum Operating Temperature 0 °C Maximum Operating Temperature +70 °C Package Includes: 1x UC3845 Documents: UC3845N Datasheet Related Products: Integrated Circuits (ICs)
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