參數(shù)資料
型號(hào)： R1161D331D
廠商： Ricoh Co., Ltd.
英文描述： 3-MODE 300mA LDO REGULATOR
中文描述： 3模式300mA的LDO穩(wěn)壓器
文件頁(yè)數(shù)： 33/44頁(yè)
文件大?。?/td> 431K
代理商： R1161D331D
R1161x
33
TECHNICAL NOTES
C1
V
DD
OUT
CE
GND
R1161xxxxx
SERIES
ECO
C2
When using these ICs, consider the following points:
1.Mounting on PCB
Make V
DD
and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
Connect a capacitor C1 with as much as 1.0μF capacitor between V
DD
and GND pin as close as possible.
Set external components, especially the output capacitor as close as possible to the ICs and make wiring as
short as possible.
2.Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, be sure to use a 1.0
P
F more capacitor C2 with good frequency characteristics and ESR
(Equivalent Series Resistance).
Output Voltage
V
OUT
<1.0V
1.0V
V
OUT
Recommended Value of C2
1.0
P
F or more Tantalum Capacitor
1.0
P
F or more Ceramic Capacitor
(Note: When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase
compensation, the operation might be unstable. Because of this, test these ICs with as same external
components as ones to be used on the PCB.)
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.
相關(guān)PDF資料
PDF描述
R1161N081A 3-MODE 300mA LDO REGULATOR
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R1161N081D 3-MODE 300mA LDO REGULATOR
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