參數(shù)資料
型號： AAT1126IGV-0.6-T1
廠商： Advanced Analogic Technologies, Inc.
英文描述： 600mA, 1MHz Step-Down Converter
中文描述： 600毫安，1MHz的降壓轉(zhuǎn)換器
文件頁數(shù)： 11/20頁
文件大?。?/td> 570K
代理商： AAT1126IGV-0.6-T1
AAT1126
600mA, 1MHz Step-Down Converter
1126.2006.05.1.1
11
The maximum input capacitor RMS current is:
The input capacitor RMS ripple current varies with
the input and output voltage and will always be less
than or equal to half of the total DC load current.
for V
IN
= 2 x V
O
The term
age ripple and input capacitor RMS current equations
and is a maximum when V
O
is twice V
IN
. This is why
the input voltage ripple and the input capacitor RMS
current ripple are a maximum at 50% duty cycle.
appears in both the input volt-
The input capacitor provides a low impedance loop
for the edges of pulsed current drawn by the
AAT1126. Low ESR/ESL X7R and X5R ceramic
capacitors are ideal for this function. To minimize
stray inductance, the capacitor should be placed
as closely as possible to the IC. This keeps the
high frequency content of the input current local-
ized, minimizing EMI and input voltage ripple.
The proper placement of the input capacitor (C2) can
be seen in the evaluation board layout in Figure 2.
· 1
-
IN
O
V
O
V
IN
I
O
2
RMS(MAX)
I
=
· 1
-
= D
· (1 - D) = 0.5
2
=
V
IN
V
O
V
IN
O
1
2
I
RMS
= I
O
· · 1
-
V
IN
O
V
O
V
IN
Figure 2: AAT1126 Evaluation Board
Top Side.
Figure 3: Exploded View of Evaluation
Board Top Side Layout.
Figure 4: AAT1126 Evaluation Board
Bottom Side.
相關PDF資料
PDF描述
AAT1141 Fast Transient 600mA Step-Down Converter
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AAT1143IJS-0.6-T1 Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:5; Connector Shell Size:24; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight
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