UC3843BN PWM Controller, 500 kHz 8-Pin, PDIP
EGP 20
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UC3843BN 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 Control Method Current Number of Outputs 1 Mounting Type Through Hole Fall Time 50ns Rise Time 50ns Package Type PDIP Topology Boost, Flyback, Forward Pin Count 8 Maximum Duty Cycle 100% Dimensions 10.92 x 6.6 x 3.32mm PWM Controller Type Current Mode Length 10.92mm Width 6.6mm Height 3.32mm Minimum Operating Temperature -40 °C Maximum Operating Temperature +150 °C Package Includes: 1x UC3843 Documents: UC3843BN Datasheet Related Products: Integrated Circuits (ICs)
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