1.5 MHZ, 600MA SYNCHRONOUS STEP-DOWN CONVERTER
FSP3100
Part #
L (uH)
Max DCR (mΩ)
Rated D.C. Current (A)
Size W×L×H (mm)
14
2.2
3.3
4.7
56.2
71.2
86.2
2.52
1.75
1.44
1.15
Sumida
CR43
4.5×4.0×3.5
108.7
1.5
2.2
3.3
4.7
Sumida
CDRH4D18
75
110
162
1.32
1.04
0.84
4.7×4.7×2.0
3.6×3.6×1.2
1.5
2.2
3.3
4.7
120
140
180
240
1.29
1.14
0.98
0.79
Toko
D312C
INPUT CAPACITOR SELECTION
The input capacitor reduces the surge current drawn from the input and switching noise from the device. The input
capacitor impedance at the switching frequency shall be less than input source impedance to prevent high
frequency switching current passing to the input. A low ESR input capacitor sized for minimum RMS current must be
used. Ceramic capacitors with X5R or X7R dielectrics are highly recommended because of their low ESR and small
temperature coefficients. A 4.7uF ceramic capacitor for most applications is sufficient.
OUTPUT CAPACITOR SELECTION
The output capacitor is requires to keep the output voltage ripple small and to ensure regulation loop stability. The
output capacitor must have low impedance at the switching frequency. Ceramic capacitors with X5R or X7R
dielectrics are recommended due to their low ESR and high ripple current. The output ripple VOUT is determined by:
VOUT × V − V
⎛
⎞
⎟
⎠
(
)
1
IN
OUT
∆VOUT
≤
× ESR +
⎜
V ×fOSC ×L
8×fOSC ×C3
IN
⎝
ORDERING INFORMATION
FSP3100XXXX
Temperature Grade:
D: -40~85℃
Package:
C: SOT23-5L
Output Voltage:
Blank: ADJ
12: 1.2V
Packing:
A: Tape & Reel
15: 1.5V
18: 1.8V
MARKING INFORMATION
AXXXX
Internal Code (if needed)
Date code:
X: Year (1=2001)
X: Week (A~Z,a~z; 0~52)
Output Voltage:
1: ADJ
2: 1.5V
3: 1.8V
4: 1.2V
Part Number: FSP3100
10/11
2007-1-29
FOSLINK [ FOSLINK SEMICONDUCTOR CO.,LTD ]
