ncp1523b ON Semiconductor, ncp1523b Datasheet - Page 15

• Manufacturer Part Number: ncp1523b
• Description: 3 Mhz, 600 Ma, Highefficiency, Adjustable Output Voltage Stepdown Converter
• Manufacturer: ON Semiconductor

Output Capacitor Selection
desired output ripple voltage. Ceramic capacitors with low
ESR values will have the lowest output ripple voltage and
are strongly recommended. The output capacitor requires
either an X7R or X5R dielectric.
regulated by pulse frequency modulation. The output
voltage ripple is independent of the output capacitor value.
It is set by the threshold of PM comparator.
Selecting the proper output capacitor is based on the
The output ripple voltage in PWM mode is given by:
In PFM mode (at light load), the output voltage is
DV OUT + DI L
4
f SW
1
C OUT
) ESR
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NCP1523
15
Table 4. LIST OF OUTPUT CAPACITOR ROHS
Taiyo Yuden
Murata
TDK
GRM188R60J475KE
GRM21BR71C475KA
GRM188R60OJ106ME
JMK212BY475MG
JMK212BJ106MG
C2012X5R0J475KT
C1608X5R0J475KT
C2012X5R0J106KT
4.7 mF
4.7 mF
4.7 mF
10 mF
10 mF
10 mF