KA7553A Datasheet PDF - ON Semiconductor

●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.

●Features

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● Built-in Drive Circuits for Direct Connection POWER MOSFET (lO = ±1.5A)

● Wide Operating Frequency Range (5KHz - 600KHz)

● Pulse By Pulse Over Current Limiting

● Over Load Protection

● On/Off Control By External Trigger

● Internal UVLO

● Low Standby Current (Typ. 90uA)

● Soft Start Circuit