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AP1155ADU Datasheet(PDF) 4 Page - Asahi Kasei Microsystems

Part No. AP1155ADU
Description  15V Input / 1A Output Adjustable Voltage LDO Regulator
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Maker  AKM [Asahi Kasei Microsystems]
Homepage  http://www.akm.com
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AP1155ADU Datasheet(HTML) 4 Page - Asahi Kasei Microsystems

 
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[AP1155ADU]
Rev.0.0
- 4 -
2014/07
Function
Pin Number
Symbol
Internal Equivalent Circuit
Description
1
VCont
300k
500k
V
Cont
On/Off control Terminal
The On/Off voltages are as follows:
VCont ≥ 1.8V : VOut On state
VCont ≤ 0.35V : VOut Off state
Pull-down resistance (500k) is
built-in.
2
VIn
-
Input Terminal
Connect a capacitor of 1F or higher
between VIn terminal and GND.
3
GND
-
GND Terminal
4
VOut
V
In
V
Out
FB
Output Terminal
Connect resistance R1 between VOut
terminal and Fb terminal, and
resistance R2 between Fb terminal and
GND.
Output voltage VOut,TYP is determined
by the following equation:
2
2
1
Fb
TYP
Out,
R
R
R
V
V
Connect a ceramic capacitor with a
capacitance higher than the following
values between VOut terminal and GND.
VOut,TYP ≥ 2.4V : 1μF
VOut,TYP < 2.4V : 2.2μF
5
FB
Feedback Terminal
Connecting a capacitor between VOut
terminal and Fb terminal reduces
output noise.
This terminal features very high
impedance; please note that it is
susceptible to external noise, etc.


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