S-8337AAAA-P8T1G Datasheet, PDF (16/51 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8337/8338 Series
Rev.4.0_01
When substituting equation (11) for equation (15):
( ) _{Vp − p =}
IPK − IOUT
2IPK
2
•
tOFF
CL
+


IPK
+ IOUT
2


• RESR
…………………………………………………..…(16)
Therefore to reduce the ripple voltage, it is important that the capacitor connected to the output pin
has a large capacity and a small ESR.
16