RP152x

NO.EA-200-160707

11

THEORY OF OPERATION

Start-up Sequence Circuit

The RP152xxxxC is equipped with a start-up sequence circuit. VR2 stands-up in 100 µs delay after VR1 stands

up simultaneously with CE. Moreover, to disabling is depending upon the setting output voltage and the

external capacitors. VR1 reduces the output voltage by the Nch driver of about 50

Ω, and VR2 reduces the

output voltage by the Nch driver of about 10

Ω.

RP152xxxxC Start-up Sequence Circuit

CE1&CE2

100 µs delay

50

Ω Discharge

10

Ω Discharge