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參數(shù)資料
| 型號(hào)： | AAT1151IKS-1.0-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 850kHz 700mA Synchronous Buck DC/DC Converter |
| 中文描述： | 850kHz 700mA的同步降壓DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 396K |
| 代理商： | AAT1151IKS-1.0-T1 |
AAT1151
850kHz 700mASynchronous Buck DC/DC Converter
1151.2005.11.1.4
13
Design Example
Specifications
I
OUT
I
RIPPLE
V
OUT
V
IN
F
S
T
AMB
0.7A
40% of Full Load at Max V
IN
1.5V
2.7V to 4.2V (3.6V nominal)
850kHz
85°C
Maximum Input Capacitor Ripple:
Inductor Selection:
Select Sumida inductor CDRH3D16 3.3μH 63m
1.8mm height.
Output Capacitor Ripple Current:
1
2
3
1
1.5V · (4.2V - 1.5V)
3.3
H · 850kHz · 4.2V
2
3
RMS
I
IN
L F V
=
·
· ·
·
· = 99mArms
·
V
OUT
· (V
IN
- V
OUT
)
=
Pesr = esr · I
RMS2
= 5m
· 99
2
mA = 50
μ
W
V
V
1.5
V
1.5V
I =
1 - =
1- = 340mA
L
F
V
IN
3.3
H
850kHz
4.2V
I
PK
= I
OUT
+
I = 0.7A + 0.17A = 0.87A
2
P = I
O
2
DCR = (0.7)
2
63m
= 31mW
V
V
1.5
V
1.5V
L =I
1 - V
1 -4.2V
μ
H
O
k
F
IN
0.7A
0.4
850kHz
1
0.35Arms, V
IN
= 2
×
V
O
O
RMS
I
O
IN
IN
V
V
I
V
V
=
· ·
-
=
P = esr
·
I
RMS
2
= 5m
·
0.35
2
A = 0.6mW
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1151IKS-2.5-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IKS-3.3-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT1151IVN-1.0-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IVN-1.8-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IVN-2.5-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
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