onsemi KA3843B

KA3843 Series 12 to 30 V 500 kHz Through Hole SMPS Controller - DIP-8

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

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

IC, PWM CONTROLLER, 3843, DIP8; Input Voltage:15V; Output Voltage:5V; Output Current:200mA; Frequency:500kHz; Power Dissipation Pd:1.2W; Supply Voltage Range:12V to 25V; Digital IC Case Style:DIP; No. of Pins:8; Operating Temperature Range:0°C to +70°C; SVHC:No SVHC (20-Jun-2011); Base Number:3843; Controller Type:PWM; IC Generic Number:3843; IC Temperature Range:Commercial; Logic Function Number:3842; Operating Temperature Max:70°C; Operating Temperature Min:0°C; Output Current Max:1A; Output Type:Voltage; Package / Case:DIP; Power Dissipation Pd:1.2W; Power Supply IC Type:PWM controller; Supply Voltage Max:25V; Supply Voltage Min:12V; Termination Type:Through Hole

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