UC3842BDG, шим контроллер связь по току 14-soic
Описание
Описание UC3842BDG
The UC3842BDG is a high-performance fixed frequency current-mode Pulse Width Modulation (PWM) Controller specifically designed for off-line and DC to DC converter applications offering the designer a cost-effective solution with minimal external components. This integrated circuit features a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, programmable output deadtime and a latch for single pulse metering.
• Trimmed oscillator for precise frequency control
• Automatic feed forward compensation
• Internally trimmed reference with undervoltage lockout
• High current totem pole output
• Undervoltage lockout with hysteresis
• Low startup and operating current
| Тип преобразователя | flyback |
| Наличие изоляции выхода | есть |
| Наличие внутреннего коммутатора | нет |
| Максимальная частота преобразователя, кГц | 500 |
| Максимальная скважность преобразователя, % | 96 |
| Защита от сбоев | cur.lim. |
| Особенности управления | frequency control |
| Рабочая температура,°С | 0…+70 |
| Корпус | soic-14(0.154 inch) |
| Вес, г | 0.25 |