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參數(shù)資料
| 型號： | R1124NXX1X |
| 英文描述： | Power Management ICs |
| 中文描述： | 電源管理IC |
| 文件頁數(shù)： | 5/6頁 |
| 文件大小： | 62K |
| 代理商： | R1124NXX1X |
Rev. 1.00
- 5 -
I
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 C
OUT
with good frequency characteristics and ESR (Equivalent Series Resistance).
We use Ceramic Capacitors for evaluation of these ICs.
(Note: When the additional ceramic capacitors are connected to the output pin with an 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.)
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 between V
DD
and GND pin, and as close as possible to the pins.
Set external components, especially the output capacitor, as close as possible to the ICs, and make wiring as short as possible.
I
TEST CIRCUITS
Fig.1 Standard test Circuit
Fig.2 Supply Current Test Circuit
Fig.3 Ripple Rejection, Line Transient Response Test
Circuit
Fig.4 Load Transient Response Test Circuit
R1124Nxx1B
Series
R1124Nxx1B
Series
R1124Nxx1B
Series
R1124Nxx1B
Series
1.0
μ
F
1.0
μ
F
1.0
μ
F
1.0
μ
F
1.0
μ
F
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