Hot-selling and scarce UC1823AJ High Speed PWM Controller IC CDIP16 spot stock

Product Descriptions

The  UC3823A  and  UC3823B  and  the  UC3825A  andUC3825B   family  of  PWM  controllers  are   improvedversions of the standard  UC3823 and  UC3825 family.Performance enhancements have been made to severalof the circuit blocks . Error amplifier gain bandwidth productis 12 MHz,while input offset voltage is 2 mV. Current limitthreshold  is  assured  to  a  tolerance  of  5%.  Oscillatordischarge current is specified at 10 mA for accurate deadtime  control .  Frequency  accuracy  is  improved  to  6%.Startup supply current,typically 100 µA, is ideal for off-lineapplications . The output drivers are redesigned to activelysink current during UVLO at no expense to the startupcurrent specification . In addition each output is capable of2-A peak currents during transitions .

Product Features

Improved Versions of the UC3823/UC3825 PWMs

Compatible with Voltage-Mode or Current-Mode Control Methods

Practical Operation at Switching Frequencies to 1 MHz

50-ns Propagation Delay to Output

High-Current Dual Totem Pole Outputs (2-A Peak)

Trimmed Oscillator Discharge Current

Low 100-µA Startup Current

Pulse-by-Pulse Current Limiting Comparator

Latched Overcurrent Comparator With Full Cycle Restart

Product Photos

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