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BA15DD0WT 数据表(PDF) 8 Page - Rohm

部件名 BA15DD0WT
功能描述  Standard Fixed Output LDO Regulators
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制造商  ROHM [Rohm]
网页  http://www.rohm.com
标志 ROHM - Rohm

BA15DD0WT 数据表(HTML) 8 Page - Rohm

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Technical Note
8/11
www.rohm.com
2011.03 - Rev.C
© 2011 ROHM Co., Ltd. All rights reserved.
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
Peripheral Circuit Considerations
Vcc Terminal
Please attach a capacitor (greater than 0.33µF) between the Vcc and GND.
The capacitance values will differ depending on the application, so please take this into account when configuring the terminal.
GND Terminal
Please be sure to keep the set ground and IC ground at the same potential level so that a potential difference does not
arise between them.
If a potential difference arises between the set ground and the IC ground, the preset voltage will not be outputted, causing
the system to become unstable. Therefore, please reduce the impedance by making the ground patterns as wide as
possible and by reducing the distance between the set ground and the IC ground as much as possible.
CTL Terminal
The CTL terminal is turned ON at 2.0V and higher and OFF at 0.8V and lower within the operating power supply voltage range.
The power supply and the CTL terminal may be started up and shut down in any order without problems.
Vo Terminal
Fig.32 Output Equivalent Circuit
Fig.33 ESR-Io Characteristics
Fig.34 ESR vs Io Characteristics
(BA□□CC0)
(B A□□DD0)
Please attach an anti-oscillation capacitor between Vcc and GND. The capacitance of the capacitor may significantly change
due to factors such as temperature changes, making it impossible to completely stop oscillations. Please use a tantalum
capacitor or aluminum electrolysis capacitor with favorable characteristics and small internal series resistance (ESR) even at
low temperatures. The output fluctuates regardless of whether the ESR is large or small. Please use the IC within the stable
operating region while referring to the ESR characteristics reference data shown in Figs.32 through 34. In applications where
there are sudden load fluctuations, the use of a capacitor with large capacitance is recommended.
OUT
22μF
IC
OUTPUT CURRENT:lo(mA)
200
400
800
1000
0.1
1
10
Stable operating region
100
0
600
Unstable operating region
Unstable operating region
10000
1
0.1
1
10
100
1
OUTPUT CURRENT:lo(mA)
Unstable operating region
Unstable operating region
Stable operating region
10
100
1000


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