The UC3844B, UC3845B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and dc−dc converter applications offering the designer a cost−effective solution with minimal external components.

NORMALLY 8DIP/8SOP PIN NO. ( ) IS 14SOP PINNO. The UC3842/UC3843/UC3844/UC3845 are fixed frequencycurrent-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components.

The UC284xB family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count.

The UC3844B, UC3845B series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components.

Description: HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER. 58 Results. Part #: KA3844BD. Datasheet: 91Kb/12P. Manufacturer: Fairchild Semiconductor.

The 3844B is a current-mode PWM controller IC designed for efficient DC-DC and off-line switching power supplies. It features low startup current, adjustable duty cycle, and built-in protections for stable operation.

The KA3842B/KA3843B/KA3844B/KA3845B are fixed frequency current-mode PWM controller. They are specially designed for Off - Line and DC-to-DC converter applications with minimum …

LOW START-UP AND OPERATING CURRENT DESCRIPTION The UC384xB family of control ICs provdesi the nec- essary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally imple- mented circuits include a trimmed oscillator for pre- cise DUTY CYCLE CONTROL under voltage lock- out featuring start-up current el ss than 0.5mA ...

These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier. current sensing comparator, and a high current totempole output Ideally suited for driving a power MOSFET. Protection circuity Includes built in under-voltage lockout and current limiting.

3844b是高性能单端输出式电流控制型脉宽调制器芯片。 引脚功能：1脚COMP-内部误差放大器的输出端，与2脚接有反馈网络，决定放大器的增益和频响。