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參數(shù)資料
| 型號： | AAT1143IJS-2.5-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:3; Connector Shell Size:28; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight |
| 中文描述： | 1MHz的400mA的降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大小： | 594K |
| 代理商： | AAT1143IJS-2.5-T1 |
Functional Block Diagram
EN
LX
Err
A.
Logic
DH
DL
PGND
VIN
OUT
AGND
Voltage
Reference
INPUT
See note
Note: For adjustable version, the internal feedback divider is omitted and the FB pin is tied directly
to the internal error amplifier.
AAT1143
1MHz 400mA Step-Down Converter
8
1143.2005.09.1.7
Functional Description
The AAT1143 is a high performance 400mA 1MHz
monolithic step-down converter. It has been
designed with the goal of minimizing external com-
ponent size and optimizing efficiency over the com-
plete load range. Apart from the small bypass input
capacitor, only a small L-C filter is required at the
output. Typically, a 4.7μH inductor and a 4.7μF
ceramic capacitor are recommended (see table of
values).
The fixed output version requires only three external
power components (C
IN
, C
OUT
, and L). The
adjustable version can be programmed with external
feedback to any voltage, ranging from 0.6V to the
input voltage. An additional feed-forward capacitor
can also be added to the external feedback to pro-
vide improved transient response (see Figure 1).
At dropout, the converter duty cycle increases to
100% and the output voltage tracks the input volt-
age minus the R
DSON
drop of the P-channel high-
side MOSFET.
The input voltage range is 2.7V to 5.5V. The con-
verter efficiency has been optimized for all load
conditions, ranging from no load to 400mA.
The internal error amplifier and compensation pro-
vides excellent transient response, load, and line
regulation. Soft start eliminates any output voltage
overshoot when the enable or the input voltage is
applied.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AAT1143IJS-3.3-T1 | Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:3; Connector Shell Size:28; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight |
| AAT1145 | 1.2A Step-Down Converter |
| AAT1145IDE-0.6-T1 | 1.2A Step-Down Converter |
| AAT1145IDE-1.8-T1 | 1.2A Step-Down Converter |
| AAT1146 | Fast Transient 400mA Step-Down Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1143IJS-3.3-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 400mA Step-Down Converter |
| AAT1145 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1.5A Step-Down Converter |
| AAT1145_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1.5A Step-Down Converter |
| AAT1145IDE-0.6-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT1145IDE-1.8-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1.5A Step-Down Converter |
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