SC251EVB SEMTECH [Semtech Corporation], SC251EVB Datasheet - Page 11

• Manufacturer Part Number: SC251EVB
• Description: Step-down DC-DC Converter with Bias LDO for WCDMA Amplifi ers
• Manufacturer: SEMTECH [Semtech Corporation]

output voltage ripple component that is dependent upon
this ESR, as can be seen in the following equation:
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 coeffi cients make them
impractical for this application. The following tables
lists the manufacturers of recommended capacitor and
inductor options.
Applications Information (Cont.)
POWER MANAGEMENT
© 2006 Semtech Corp.
BI Technologies
HM66304R7
Coilcraft
D01608C-472ML
TDK
VLCF4018T- 4R7N1R0-2
Murata
GRM219R
61A475KE34B
TDK
C1608JF0J475Z
Murata
GRM219R 60J106K
E19B
TDK
C2012JB0J106K
Manufacturer/Part #
Manufacturer/Part #
Table 2: Recommended Capacitors
Table 1: Recommended Inductors
Δ
V
Value
Value
4.7
4.7
4.7
OUT
μH
μF
4.7
4.7
10
10
(
ESR
)
0.072
0.101
DCR
=
0.09
Voltage
Ω
Rated
VDC
Δ
6.3
6.3
6.3
6.3
I
( L
ripple
Saturation
Current
1.32
1.07
1.5
)
A
Characteristic
×
Temperature
ESR
X5R
X5R
X5R
X5R
Tolerance
(
COUT
±%
20
20
30
)
Case Size
4.7 × 4.7 × 3.0
6.6 × 4.5 × 3.0
4.3 × 4.0 × 1.8
Dimensions
0603
0603
0603
0805
(LxWxH)
mm
11
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