UC3842BL-S08-R Datasheet PDF - UTC

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●DESCRIPTION

●The UTC UC3842B/3843Bare specifically designed for off-line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components. The UC3842Bhas UVLO thresholds 16V (on) and 10V(off), ideally suited for off-line converters. The UC3843Bis tailored for lower voltage applications having UVLO thresholds of 8.4V(on) and 7.6V(off).

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●FEATURES

● Trimmed oscillator for precise frequency control

● Oscillator frequency guaranteed at 250kHz

● Current mode operation to 500kHz

● Automatic feed forward compensation

● Latching PWM for cycle-by-cycle current limiting

● Internally trimmed reference with undervoltage lockout

● High current totem pole output

● Undervoltage lockout with hysteresis

● Low startup and operating current