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 …

Part #: 3845B. Download. File Size: 343Kbytes. Page: 21 Pages. Description: HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS. Manufacturer: Texas Instruments.

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−dc converter applications offering the designer a cost−effective solution with minimal external components.

TI’s TL3845B is a 30-V, 0.2A high Performance 500KHz current mode PWM with 8.4V/7.6V UVLO, 50% duty cycle, 0C to 70C. Find parameters, ordering and quality information.

TI’s UC3845 is a Single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 50% duty cycle, 0C to 70C. Find parameters, ordering and quality information.

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.

View UC3844B, 3845B, 2844B, 2845B by onsemi datasheet for technical specifications, dimensions and more at DigiKey.

The part number 3845B usually refers to a variant of the UC3845, which is a high-performance current mode controller integrated circuit (IC) used for switch mode power supplies. General characteristics of the UC3845B IC typically include:

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 for driving a Power MOSFET. The UC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off).