Descripción
KKA7552. Circuito integrado controlador PWM DIL8. THD capsula DIL8
KA7552
Features
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
Description
The KA7552A/KA7553A are switching power control ICfor wide operating frequency range.
The internal circuits include pulse by pulse current limiting, protection, on/offcontrol 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
