SC251 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC251' PDF : 19 Pages View PDF
POWER MANAGEMENT
Applications Information (Cont.)
output voltage ripple component that is dependent upon
this ESR, as can be seen in the following equation:
ΔV = ΔI × ESR OUT(ESR)
L (ripple)
(COUT )
Capacitors with X7R or X5R ceramic dielectric should
be used for their low ESR and superior temperature
and voltage characteristics. Y5V capacitors should not
be used as their temperature coefficients make them
impractical for this application. The following tables
lists the manufacturers of recommended capacitor and
inductor options.
Table 1: Recommended Inductors
Manufacturer/Part #
Value
μH
DCR
Ω
Saturation
Current
A
Tolerance
±%
Dimensions
(LxWxH)
mm
BI Technologies
HM66304R7
4.7 0.072
1.32
Coilcraft
D01608C-472ML
4.7
0.09
1.5
TDK
VLCF4018T- 4R7N1R0-2
4.7
0.101
1.07
20
4.7 × 4.7 × 3.0
20
6.6 × 4.5 × 3.0
30
4.3 × 4.0 × 1.8
Table 2: Recommended Capacitors
Manufacturer/Part #
Murata
GRM219R
61A475KE34B
TDK
C1608JF0J475Z
Murata
GRM219R 60J106K
E19B
Value
μF
Rated
Voltage
VDC
Temperature
Characteristic
4.7
6.3
X5R
4.7
6.3
X5R
10
6.3
X5R
Case Size
0603
0603
0603
TDK
C2012JB0J106K
10
6.3
X5R
0805
© 2006 Semtech Corp.
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SC251
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