PEDL5501-02
OKI Semiconductor
ML5501
Capacitor Selection
Input Capacitor
A 100 µF ceramic capacitor is recommended to improve transient behavior of the regulator and EMI
behavior of the total power supply circuit. Also a ceramic capacitor of 1uF placed close to the IC, is
recommended.
Output Capacitor
The major parameter necessary to define the output capacitor is the maximum allowed output voltage
ripple of the converter. This ripple is determined by two parameters of the capacitor, the capacitance
and the ESR.
All External Component List
Below table is all external component list on the ML5501 board:
Component
Description
C1
C2
C3
C4
C5
C6
C7
L
10μF 6.3V ceramic capacitor
1.8nF 6.3V ceramic capacitor
8.2nF 6.3V ceramic capacitor
22μF 25V ceramic capacitor
10μF 25V ceramic capacitor
100μF 16V ceramic capacitor
1uF 16V ceramic capacitor
10uH, DCR(max)=26m
D
Surface mount schottky power rectifier;If>2A,Vr>40V,Vf<0.5@If=2A
R2, R4, R6, R8 10K ± 1% resistor
R1
R3
R5
R7
140K ± 1% resistor
190K ± 1% resistor
110K ± 1% resistor
160K ± 1% resistor
Table 3: Components List
Rev 1.0
9 / 13
OKI [ OKI ELECTRONIC COMPONETS ]
