CONTROLLOER, PWM, 5KHZ-600KHZ, 8DIP; Output Voltage:16.5V; Output Current:100mA; Frequency:135kHz; Power Dissipation Pd:800mW; Supply Voltage Range:10V to 30V; Digital IC Case Style:DIP; No. of Pins:8; Operating Temperature Range:-25°C to +85°C; SVHC:No SVHC (18-Jun-2012)
The KA7552A/KA7553A are switching power control IC for wide operating frequency range. The internal circuits include pulse by pulse current limiting, protection, on/off control by external trigger, low standby current, soft start, and high current totempole output for driving a POWER MOSFET. Maximum duty of the KA7552A is 70% and the KA7553A is 46%. When duty is maximum, the input threshold voltage of pin2 & pin8 are not same in KA7552A and KA7553A.