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參數(shù)資料
| 型號(hào)： | AAT1147 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter |
| 中文描述： | 高效率，低噪聲，快速瞬態(tài)400mA的降壓轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 16/19頁(yè) |
| 文件大?。?/td> | 620K |
| 代理商： | AAT1147 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)當(dāng)前第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)
Input Capacitor
Input Ripple V
PP
= 25mV
AAT1147 Losses
T
J(MAX)
= T
AMB
+
Θ
JA
· P
LOSS
= 85
°
C + (160
°
C/W) · 126mW = 105.1
°
C
P
TOTAL
+ (t
sw
· F
S
· I
O
+ I
Q
) · V
IN
I
O
2
· (R
DSON(H)
· V
O
+ R
DSON(L)
· [V
IN
-V
O
]
)
V
IN
=
=
+ (5ns · 1.4MHz · 0.4A + 70
μ
A) · 4.2V = 126mW
0.4
2
· (0.725
Ω
·
1.8V + 0.7
Ω
·
[4.2V - 1.8V])
4.2V
I
O
2
RMS
I
P = esr
·
I
RMS
2
= 5m
Ω
·
(0.2A)
2
= 0.2mW
=
= 0.2Arms
C
IN
=
=
= 3.11
μ
F; use 4.7
μ
F
1
- ESR
·
4
·
F
S
V
PP
I
O
1
- 5m
Ω
·
4
·
1.4MHz
0.4A
25mV
AAT1147
High Efficiency, Low Noise, Fast Transient
400mA Step-Down Converter
16
1147.2006.05.1.0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1147IJS-0.6-DB1 | 制造商:Skyworks Solutions Inc 功能描述:Evaluation Board for AAT1147 High Efficiency Step-Down Converter |
| AAT1147IJS-0.6-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter |
| AAT1149 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:3MHz Fast Transient 400mA Step-Down Converter |
| AAT1149_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:3MHz Fast Transient 400mA Step-Down Converter |
| AAT1149A | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:2.2MHz Fast Transient 400mA Step-Down Converter |
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