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參數(shù)資料
| 型號： | RP151K002B |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | 300mA 2ch LDO with VD |
| 中文描述： | 300mA的LDO的2聲道與性病 |
| 文件頁數(shù)： | 6/32頁 |
| 文件大?。?/td> | 747K |
| 代理商： | RP151K002B |
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RP151K
VD
6
Topt=25°C
Symbol
V
DET
+
V
DET
V
HYS
Item
Conditions
Min.
90
Typ.
92
Max.
Unit
Detector Threshold
% of nominal V
OUT2
%
%
%
V
Released Voltage
% of nominal V
OUT2
94
96
Detector Threshold Hysteresis
% of nominal V
OUT2
2
V
OL
D
OUT
Output Voltage “L”
D
OUT
Output Leakage
Current
Reset Delay Time
I
L
=
0.25mA
0.02
0.1
I
DOUT
1
μ
A
t
D
C
CD
=
0.01
μ
F
10
ms
R
D
Delay Circuit Resistance
0.96
1.35
1.63
M
V
TCD
C
D
Pin Threshold Voltage
V
DD
=
3.6V
1.7
1.9
2.1
V
TECHNICAL NOTES
When using these ICs, consider the following points:
Phase Compensation
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.
C
D
external components, especially capacitor C4, as close as possible to the ICs and make wiring as short
as possible. (Refer to TYPICAL APPLICATION)
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.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RP151K005A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:300mA 2ch LDO with VD |
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| RP151K006A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:300mA 2ch LDO with VD |
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