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参数资料
| 型号： | LSP3100C18D |
| 厂商： | LITE-ON SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | SOT-23, 5 PIN |
| 文件页数： | 2/12页 |
| 文件大小： | 368K |
| 代理商： | LSP3100C18D |
Liteon Semiconductor Corporation
LSP3100
1.5MHZ, 800mA Synchronous Step-Down Converter
Rev1.3
10/12
Part #
L (H)
Max DCR (m)
Rated D.C. Current (A)
Size W×L×H (mm)
Sumida
CR43
14
2.2
3.3
4.7
56.2
71.2
86.2
108.7
2.52
1.75
1.44
1.15
4.5×4.0×3.5
Sumida
CDRH4D18
1.5
2.2
3.3
4.7
75
110
162
1.32
1.04
0.84
4.7×4.7×2.0
Toko
D312C
1.5
2.2
3.3
4.7
120
140
180
240
1.29
1.14
0.98
0.79
3.6×3.6×1.2
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 4.7F 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:
()
OUT
IN
OUT
IN
OSC
VV
V
1
VESR
Vf
L
8 f
C3
×
≤
×
+
××
ORDERING INFORMATION
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