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參數(shù)資料
| 型號： | RP150K017B |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | LOW NOISE Dual 300mA LDO |
| 中文描述： | 低噪聲雙300mA的LDO |
| 文件頁數(shù)： | 6/28頁 |
| 文件大?。?/td> | 761K |
| 代理商： | RP150K017B |
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RP150K
TECHNICAL NOTES
6
When using these ICs, consider the following points:
PCB Layout
Make V
DD
and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
Connect a capacitor with a capacitance value as much as 1.0
μ
F or more as C1 between V
DD
and GND pin,
and as close as possible to the pins.
Set the output capacitors C2 and C3 for phase compensation, as close as possible to the ICs, and make
wiring as short as possible.
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied.
For this purpose, connect capacitors with a capacitance value as much as 1.0
μ
F or more as C2 and C3 with
good frequency characteristics and ESR (Equivalent Series Resistance) between V
OUT
and GND pin, and as
close as possible to the pins.
If you use a tantalum type capacitor and ESR value of the capacitor is large, output might be unstable.
Evaluate your circuit with considering frequency characteristics.
Depending on the capacitor size, manufacturer, and part number, the bias characteristics and temperature
characteristics are different. Evaluate the circuit with actual using capacitors.
TYPICAL APPLICATIONS
IN
(External Components)
Output Capacitor; Ceramic Type C1, C2, C3
1.0
μ
F
Kyocera
TDK
Murata
CM05X5R105KD6AB
C1005JB0J105K
GRM155B31A105KE15
V
OUT2
V
OUT1
CE2
RP150
SERIES
CE1
GND
V
DD
OUT2
C3
C1
OUT1
C2
1
2
3
8
7
6
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