參數(shù)資料
型號(hào)： AAT1123
廠商： Advanced Analogic Technologies, Inc.
英文描述： 1MHz Step-Down Converter
中文描述： 1MHz的降壓轉(zhuǎn)換器
文件頁(yè)數(shù)： 8/20頁(yè)
文件大?。?/td> 575K
代理商： AAT1123
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.
AAT1123
1MHz Step-Down Converter
8
1123.2006.05.1.5
Functional Description
The AAT1123 is a high performance 600mA 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 out-
put. Typically, a 4.7μH inductor and a 22μF 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 heavy load.
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.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AAT1123_07 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz Step-Down Converter
AAT1123IJS-0.6-T1 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER
AAT1123IJS-1.2-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz Step-Down Converter
AAT1125IJS-0.6-T1 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 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(kāi)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
AAT1126 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:600mA, 1MHz Step-Down Converter
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