BL8080
GENERAL DISCRIPTION
The BL8080 is a PWM controller designed to drive high voltage
NPN transistors.
It integrates an oscillator, cycle-by-cycle current limit, thermal protection and over voltage protection, great reducing the number of external components and system level cost.
Compared to conventional controller, BL8080 has a significantly smaller startup current of less than 20uA, which allows large startup resistor that enabes further power saving.
The frequency can be adjusted from an external capcitor.
At light load condition the frequency of BL8080 can be varied according to the load, which improves the light load efficiency.
HIGH INTEGRATED PWM CONTROLLER
FEATURES
Low start ...