onsemi KA3844B

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDIP8

AC to DC Switching Converter SMPS Controller 500kHz Rail 8-Pin PDIP

KA3844 LIFETIME (Last Updated: 1day ago) Tube e3 dc ac converter 30V 10.15mm Up to 500kHz 1A

PWM Controller programmable frequency upto 500khz

Current Mode PWM Controller 1A 8-Pin PDIP W Rail

Fixed frequency current-mode PWM controller; DIP-8

IC, PWM CONTROLLER, 3844, DIP8;

Supervisory Circuits PWM Control IC

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 external components. 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. The KA3842B and KA3844B have UVLO thresholds of 16V (on) and 10V (off) The KA3843B and KA3845B are 8.5V (on) and 7.9V (off) The KA3842B and KA3843B can operate within 100% duty cycle. The KA3844B and KA3845B can operate with 50% duty cycle. Product Highlights: Low Start Up Current Maximum Duty Clamp UVLO With Hysteresis Operating Frequency Up To 500KHz