UC3843BL-D08-T

UC3843BL-D08-T 管装

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*DESCRIPTION**

The 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 10Voff, ideally suited for off-line converters. The UC3843Bis tailored for lower voltage applications having UVLO thresholds of 8.4Von and 7.6Voff.

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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