參數(shù)資料
型號(hào)： AAT3215IGV-27-T1
廠商： Advanced Analogic Technologies, Inc.
英文描述： 150mA CMOS High Performance LDO
中文描述： 150mA的LDO穩(wěn)壓器的CMOS高性能
文件頁數(shù)： 13/16頁
文件大?。?/td> 283K
代理商： AAT3215IGV-27-T1
AAT3215
150mA CMOS High Performance LDO
3215.2002.03.0.91
13
Applications Information
Figure 1: Common LDO Regulator Layout with C
BYP
Ripple feedback loop
LDO
Regulator
C
BYP
C
OUT
R
TRACE
R
TRACE
R
TRACE
R
TRACE
C
IN
R
LOAD
V
IN
EN
GND
V
OUT
BYP
I
LOAD
I
RIPPLE
I
IN
V
IN
GND
DC INPUT
I
GND
C
BYP
GND
LOOP
I
LOAD
return + noise and ripple
I
BYP
+ noise
Figure 2 shows the preferred method for the bypass
and output capacitor connections. For low output
noise and highest possible power supply ripple
rejection performance, it is critical to connect the
bypass and output capacitor directly to the LDO reg-
ulator ground pin. This method will eliminate any
load noise or ripple current feedback through the
LDO regulator.
Figure 2: Recommended LDO Regulator Layout
LDO
Regulator
C
BYP
C
OUT
R
TRACE
R
TRACE
R
TRACE
R
TRACE
C
IN
R
LOAD
V
IN
EN
GND
V
OUT
BYP
V
IN
GND
I
IN
I
LOAD
I
GND
I
RIPPLE
DC INPUT
I
LOAD
return + noise and ripple
I
BYP
only
Evaluation Board Layout
The AAT3215 evaluation layout follows the recom-
mend printed circuit board layout procedures and
can be used as an example for good application
layouts.
Note: Board layout shown is not to scale.
Figure 3: Evaluation board
component side layout
Figure 4: Evaluation board
solder side layout
Figure 5: Evaluation board
top side silk screen layout /
assembly drawing
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