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参数资料
| 型号： | RP130Q181D5-TR-F |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | 1.85 V FIXED POSITIVE LDO REGULATOR, 0.68 V DROPOUT, PDSO4 |
| 封装： | LEAD FREE, SC-82AB, 4 PIN |
| 文件页数： | 30/31页 |
| 文件大小： | 408K |
| 代理商： | RP130Q181D5-TR-F |
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RP130x
8
TYPICAL APPLICATION
C1
RP130x
Series
VDD
VOUT
CE
GND
C2
VOUT
(External Components)
Ceramic Capacitor C2
0.47
F
MURATA
GRM155B30J474KE18B
TECHNICAL NOTES
When using these ICs, consider the following points:
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, use a capacitor C2 with 0.47
F or more.
If a tantalum capacitor is used, and its ESR (Equivalent Series Resistance) of C2 is large, the loop oscillation
may result. Because of this, select C2 carefully considering its frequency characteristics.
PCB Layout
Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
Connect a capacitor C1 with a capacitance value as much as 0.47
F or more between VDD and GND pin, and as
close as possible to the pins.
Set external components, especially the output capacitor C2, as close as possible to the ICs, and make wiring
as short as possible.
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