Description
The UTC UC3842B/3843B are specifically designed for off-line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components.
The UC3842B has UVLO thresholds 16V (on) and 10V(off), ideally suited for off-line converters.
Features
- S.
- 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.
UC3843B Datasheet
