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參數(shù)資料
| 型號(hào)： | AAT1146 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | Fast Transient 400mA Step-Down Converter |
| 中文描述： | 快速瞬態(tài)400mA的降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 784K |
| 代理商： | AAT1146 |
AAT1146
Fast Transient 400mA Step-Down Converter
1146.2006.04.1.3
13
The maximum output capacitor RMS ripple current
is given by:
Dissipation due to the RMS current in the ceramic
output capacitor ESR is typically minimal, resulting in
less than a few degrees rise in hot-spot temperature.
Adjustable Output Resistor Selection
For applications requiring an adjustable output volt-
age, the 0.6V version can be externally pro-
grammed. Resistors R1 and R2 of Figure 5 program
the output to regulate at a voltage higher than 0.6V.
To limit the bias current required for the external
feedback resistor string while maintaining good
noise immunity, the minimum suggested value for
R2 is 59k
Ω
. Although a larger value will further
reduce quiescent current, it will also increase the
impedance of the feedback node, making it more
sensitive to external noise and interference. Table 2
summarizes the resistor values for various output
voltages with R2 set to either 59k
Ω
for good noise
immunity or 221k
Ω
for reduced no load input current.
R1 = V
·
R2 = 0.6V
·
59k
Ω
= 88.5k
Ω
REF
V
OUT
1.5V
1
2
3
V
OUT
· (V
IN(MAX)
- V
OUT
)
L
·
F
·
V
IN(MAX)
RMS(MAX)
I
=
·
·
Figure 2: AAT1146 Evaluation Board
Top Side.
Figure 3: Exploded View of Evaluation
Board Top Side Layout.
Figure 4: AAT1146 Evaluation Board
Bottom Side.
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| AAT1146IJS-0.6-T1 | Fast Transient 400mA Step-Down Converter |
| AAT1146IJS-1.875-T1 | Fast Transient 400mA Step-Down Converter |
| AAT1150 | GT 2C 2#4 SKT RECP |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1146_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Fast Transient 400mA Step-Down Converter |
| AAT1146AIGV-0.6-T1 | 制造商:Skyworks Solutions Inc 功能描述:Voltage Regulators - Switching Regulators Fast Transient 400mA Buck Converter |
| AAT1146IGV-0.6-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Fast Transient 400mA Step-Down Converter |
| AAT1146IJS-0.6-T1 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Fast Transient 400mA DC/DC Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| AAT1146IJS-1.0-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Fast Transient 400mA Step-Down Converter |
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